ECOSYSTEM MANAGEMENT

Ecosystems management is an approach to natural resource management that focuses on sustaining ecosystems to meet both ecological and human needs in the future. Ecosystem management is adaptive to changing needs and new information. It promotes shared vision of a desired future by integrating social, environmental and economic perspectives to managing geographically defined natural ecological systems.
Ecosystems promote human well being through the various services they provide.
One of the six priorities of the UNEP medium‑term strategy for 2010–2013 is that “countries utilize the ecosystem approach to enhance human well-being”. The UNEP Ecosystem Management Programme is centred on the functioning and resilience of the ecosystems and the services they provide. The programme aims to support countries and regions to:

1. increasingly integrate an ecosystem management approach into development and planning processes;
2. acquire the capacity to use ecosystem management tools; and
3. realign their environmental programmes and financing to tackle the degradation of selected priority ecosystem services.

The programme is guided by five major interlinked elements: human well-being, indirect and direct drivers of change, ecosystem functioning and ecosystem services. As ecosystem services are interlinked and cannot be treated in isolation, UNEP promotes a holistic perspective for dealing with bundles of interlinked services to reverse their decline through improved ecosystem functioning and increased resilience. The services fall under the following categories: regulating, provisioning, supporting and cultural services

The UNEP programme focuses on 11 of the 15 degraded ecosystem services mainly comprising:
Regulating services: climate, water, natural hazard and disease regulation, water purification and waste treatment, which are often strongly affected by the overuse of provisioning services;
Provisioning services: freshwater, energy (especially the emerging issues around biofuel production) and capture fisheries;
Cultural services: Recreation and ecotourism service;
Supporting services: nutrient cycling and primary production which underlie the delivery of all the other services but are not directly accessible to people.

Selection of Key Ecosystem Services

Fig. 1. Schematic representation of the ecosystem services selected by UNEP, as categorized in the Millennium Ecosystem Assessment (regulating, provisioning, supporting and cultural services).
UNEP provides specialized expertise from different disciplines. These include:

• Assessment and monitoring (e.g., indicators, research and access to knowledge);
• Risk management;
• Management tools e.g., conservation and protection, restoration, sustainable management, legislation, certification;
• Ecosystem economics e.g., payments for ecosystem services, incentives and financing mechanisms, valuation, equity and fairness principles;
• Governance e.g., international agreements, legislation, policies; and
• Capacity-building and technology support.

WATER LIFE & MYSTERY

What Monsters have really existed in the Sea? Are there any left?

The Webster's dictionary defines the word monster as "an animal of strange or terrifying shape" and "one unusually large for its kind." By this definition, the creatures that dwell in the deep ocean are true monsters. Miles beneath the surface, where sunlight can no longer penetrate, exists an eerie world of cold darkness. This is the abyss. It is a world of strange and sometimes grotesque forms. Some of the animals here have evolved the ability to create their own light with a technique known as bioluminescence. They use their lights to attract prey and ward off predators. There are also creatures here of gigantic proportions. There are also animals here that get all of their nutrients from chemicals in the ocean through a process known as chemosynthesis. This is where the elusive giant squid hunts. It is also where the great sperm whale comes to feed on the giant squid. Here, within the waters of our own planet, lies an alien world of wonders.
Over the centuries, the oceans have given birth to many myths, legends, mysteries and events still not completely explained by mankind. Contrary to popular belief, the sailors of Columbus's day did not think they would sail right off the edge of the earth. They were, however, apprehensive about what they would find in their travels. Mistakes about marine life have ranged from inaccurate assumptions about the behavior of known species to fanciful depictions of animals that "might" exist.

Hercules battled with a hydra in ancient Greek mythology, and this imaginary animal has suffered from a rotten reputation ever since. Unfortunately, the hydra has a living relative, of sorts: the octopus. Even now, misconceptions persist about the octopus (also called the "devil fish"), and it has been doomed to play the villain in more than one B movie. Although this illustration only shows seven heads, the hydra was said to have nine, and two new ones would appear whenever one was chopped off.
Strange as it looks by today's standards, this picture of a dissected head of a giant white shark actually marked significant progress in marine biology. For years, fossilized shark teeth were believed to be tongues of serpents turned to stone by St. Paul, and hence were named glossopetrae, or "tongue stones". Niels Stensen correctly identified tongue stones as shark teeth.

Alexander Winchell suggested that , "the unexplored depths of the ocean conceal the forms of octopods that far surpass in magnitude any of the species known to science." Winchell was right on both counts.

In the 16th century, two naturalists, Rondelet and Pierre Belon, produced descriptions of animals they termed the Sea Monk, or monk-fish. Centuries later, a very talented naturalist, Japetus Steenstrup, gave a presentation in which he compared Rondelet's illustration (on the left) and Belon's illustration (on the right) to the likeness of a squid captured in 1853. He also took into consideration a 16th-century description of the Sea Monk by Conrad Gesner. Steenstrup made an amazing deduction: "Could we, given these bits of information of how the Monk was conceived at that time, come so near to it that we could recognize to which of nature's creatures it should most probably be assigned? The Sea Monk is firstly a cephalopod."

The Giant Squid
On a December day in 1848, the sailing ship Pekin was becalmed off the Cape of Good Hope near Southern Africa when a crew member spotted a strange creature in the water. Careful examination of the animal by use of a telescope revealed it to be snake-like, with a large head and shaggy mane.

Only two months before the HMS Daedulus had reported seeing a sea serpent in that very same region. Amid great excitement a small boat, it's crew prepared to capture the animal, was lowered into the water. The captain, Frederic Smith, watched from a distance, with concern for the safety of his men, as the small boat approached the creature. To the Captain's surprise the animal did not move at all as the boat drew near. He was even more surprised when the crew of the boat proceeded to tow the "creature" back to the Pekin.

The sea serpent turned out to be a twenty foot long piece of floating seaweed with a root shaped like a head and neck. Could the Daedulus sea serpent been of similar origin?

Judging distance, size and motion of an object in the sea is extremely difficult. Objects on land can be compared to nearby trees and boulders. In the water only the waves offer a clue to scale and the size of waves vary enormously depending on weather conditions.

The movement of the waves can also suggest motion where there is none. Arthur Adams, a ship's surgeon in the 1860's, spotted what appeared to be a mysterious creature moving through the water by using lateral undulations of it's body. His ship's course was altered to intercept the animal and capture it. When they approached the thing Adam's wrote:

"By this time, however, a closer and more critical inspection had taken place, and the supposed sea monster had turned himself into a long, dark root, gnarled and twisted, of a tree, secured to the moorings of a fishing net, with a strong tide passing it rapidly, and thus giving it an apparent life-like movement and serpentine aspect."

The Daedulus affair might also be explained by an abandoned native canoe painted like a snake. L. Sprague de Camp suggested the owners of the canoe may have harpooned a large sea animal, like a whale shark, and they were either spilled into the sea when the animal surfaced under the boat, or jumped in panic when they could not cut the line dragging the canoe.

The Oarfish
One unusual, real creature that might be mistaken for a sea monster is the oarfish. The oarfish, Regalecus glesne, is a strange eel-like animal that has been measured at up to 25 feet in length. Some reports have described specimens twice that size. The oarfish is bright silver in color and has a high, bright red crest of spikes running down the back of it's snake-like body. It's strange startling appearance has led it to be identified as a monster on at least one occasion: Two men were gathering seaweed on the coast of Bermuda in 1860 when they came across a serpent-like creature stranded in the rocks. They killed it and they animal was reported as a sea serpent until a naturalist eventually showed up and identified the creature for what it really was.

An unusual species of frilled shark, Chlamydoselachus anguineus, might also be taken for a sea serpent. Like the oarfish it is eel-shaped. It has a single dorsal fin placed well back along the body which can appear as a mane. The frilled shark has an ancient history and is almost a living fossil. It would truly be a likely candidate for a sea serpent if it was only a little larger. So far the largest known frilled shark was only six feet nose-to-tale. If there is a larger relative of this animal swimming in the seas it might well be identified as a sea serpent.

In 1880 Captain S. W. Hanna netted a long eel-like shark that measured some 25 feet. While not matching the description of Chlamydoselachus anguineus exactly, it probably is a close relative and suggests there may be some giant frilled sharks in the sea that could be taken for sea serpents.

One dangerous candidate as a sea monster is the salt water crocodile. These creatures, living in the India Ocean and the area around southeast Asia and Australia have been measured to lengths of 18 feet and weighing almost a ton. Unconfirmed reports indicate they may get as long as thirty feet. They are hungry, aggressive and often attack people.

The giant squid may account for some sea serpent sightings too. Giant squids probably qualify as sea monsters just as they are: Growing up to fifty feet long with ten arms and eyes over a foot in diameter. If the cone shaped squid head was sticking out of the water near or close to a visible arm the squid might look like a serpent head and tail from a distance. (A famous serpent sighting off of Greenland, by Hans Egede, in 1745 may be explained this way). Also a single tentacle with a club of suckers on the end might look like the head and neck of a Pleisosaur.

In 1875 the barque Pauline spotted a sperm whale with a snake-like creature wrapped around it's mid-section. The crew reported this sea serpent eventually dragged the whale down to it's death. More likely the "snake" was the arm of a large squid in battle with the whale.

Even mundane sea animals may be mistaken for sea monsters. Fish or dolphins traveling together in a line may appear as a series of undulating humps with dorsal fins. Even a mass of low flying birds skimming across the water at a distance have been mistaken for a single sea serpent.

The basking shark is one creature that is more likely to be mistaken for a sea monster after it is dead, rather than when it was alive. Basking sharks are the second largest fish in the sea and grow to lengths of 40 feet. Like the great blue whale they are harmless filter feeders with enormous mouths. The shark skims the surface of ocean eating tiny floating plankton. The water exits the shark's mouth through large gill slits on the side of the head.

Because the gills of the basking shark rot quickly after death the carcass can give the appearance of having a long, narrow neck (like a pleisosaur) without the head. Several basking shark remains have been misidentified as sea monsters.

Some sea monster reports may not involve just unusual creatures, but usual conditions. Right before a storm at sea, air of two different temperatures can form layers just above the surface of the sea. Perhaps seven or eight feet above the waves the different density of the two layers can cause light to bounce forming a mirage. In this case the mirage causes objects to be elongated, as if by a fun house mirror, vertically, but not horizontally. Seals, whales and dolphins breaking the surface under these conditions will appear as thin, tall, unknown creatures.

Norse men often spotted these creatures and took their appearance as an omen warning of an impending storm. Because of the strange atmospheric conditions, rather than anything supernatural, this warning was accurate.

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The Mermaids: fact or fantasy?
Stories of Mermaids have been told for centuries, be it in the form of folklores, legends or fairy tales. Images of this creature have plagued artists and writers in their efforts to bring to life the mystery, beauty, and yes, eroticism of the mermaid to their audiences. Some still claim, even today, that they exist: see FIRST-EVER PHOTOS OF A MERMAID! Image Of Half-Woman Half-Fish Dazzles Tourists In Hawaii!

The mermaid and merman legends begin with the worship of gods as have many mythologies. This information has been divided into three different categories to help save time in your browsing and to establish simple guidelines to see different periods in the mythology of mermaids. The earliest representations and descriptions of these now well-known creatures can be traced back as far as the eighth century BC.

The Three Stages of the Mermaids Mythology
1. Merfolk as Gods - a look at the birth of the mermaid mythology and how it began as pagan water deities and supernatural female water beings.

2. Merfolk and Christianity - the role of the mermaid mythology changed significantly with the growth of the Christian Church, this is a look at how and why the myth survived when so many other pagan deities didn't and what the new role of the mermaid was.

3. Merfolk and the Rise of Science - for a long time the mermaid was believed to have existed even by educated men, with the rise of science and the Enlightenment the tides turned back to try and disprove the existence of such a creature as the mermaid. This being done the role of mermaids changed yet again.

Merfolk as Gods
The Babylonians were known to worship a sea-god called Oannes, or Ea. Oannes was reputed to have risen from the Erythrean Sea and taught to man the arts and sciences. In the Louvre today can be seen an eighth century wall-scene depicting Oannes as a merman, with the fish-like tail and the upperbody of a man.

The Syrians and the Philistines were also known to have worshiped a Semitic mermaid moon-goddess. The Syrians called her Atargatis while the Philistines knew her as Derceto. It is not unusual or surprising that this moon-goddess was depicted as a mermaid as the tides ebbed and flowed with the moon then as it does now and this was incorporated into the god-like personifications that we find in their art and the ancient literature. Atargatis is one of the first recorded mermaids and the legend says that her child Semiramis was a normal human and because of this Atargatis was ashamed and killed her lover. Abandoning the infant she became wholly a fish.

However, not all ancient water gods or spiritual personifications took on the form of a mermaid or a merman all of the time. Water-nymphs for example can be mistaken for mermaids, they are beautiful in their appearance and are also musically talented, which mermaids are well known for, be it their singing or playing of a musical instrument. Sirens too are forever being mistaken for mermaids. Even the ancient writers and medieval Bestiary writers would get the two confused or mention only one when in fact both have to be mentioned to make sense of the literatures and archaeological evidence. This is discussed again below, where one can also see the result of a siren/mermaid illustration. The Siren and the Mermaid are two separate entities, one having the upper body of a young woman and the lower body of a bird, the other the upper body of a young woman and the lower body of a fish.

The Indians, amongst their many gods, worshiped one group of water-gods known as the Asparas, who were celestial flute-playing water-nymphs.

In Japanese and Chinese legends there were not only mermaids but also sea-dragons and the dragon-wives. The Japanese mermaid known as Ningyo was depicted as a fish with only a human head; where as the Polynesian mythology includes a creator named Vatea who was depicted as half-human form and half-porpoise.

Greek and Roman mythology is often placed together as the two are very similar and it is in the literature from these cultures that one finds the first literary description of the mermaid, and indeed the mermen. Homer mentions the Sirens during the voyage of Odysseus but he fails to give a physical description. The image seen here shows an old black and white film of Homer's tale depicting the sirens in mermaid form. Ovid on the other hand writes that the mermaids were born from the burning galleys of the Trojans where the timbers turned into flesh and blood and the 'green daughters of the sea'.

Poseidon and Neptune were often depicted as half-man and half-fish but the most popular motif of the ancient world that depicts mermen was the representations of the tritons, TRITON being the son of the powerful sea-god. A detail of the vase shown and other typical triton motifs can be seen from these periods in the Art Gallery. Besides the vase is the trident, known to have been carried by the sea-god and thought to be magical, the figure of Poseidon in the film Jason and the Argonauts, 1973 is shown with the trident. Specimens of tritons in classical times were said to be found at Tanagara and Rome, according to Pausanias, it is presumed by scholars today that they were fakes, just like those mermaid remains that one could find in the later nineteenth century freak shows, but more information on these later. The Nereids, who were the daughters of Nereus and the Oceanides, who were associated with Ocean and the Naiads who lived in the fresh waters of the ancient world, while being water creatures were depicted as humans and not merpeople.

The British Isles too had their fair share of merfolk mythology. The Cornish knew mermaids as Merrymaids; the Irish knew them as Merrows or Muirruhgach and some sources write that they lived on dry land below the sea and had enchanted caps that allowed them to pass through the water without drowning, while the women were very beautiful the men had red noses, were piggy eyed, with green hair and teeth and a penchant for brandy.

The neck are to be found in Scandanavia, along with the Havfrue (merman) and the Havmand (mermaid), the neck however were able to live in both salt- and fresh-water. The Norwegian mermaid known as Havfine were believed to have very unpredictable tempers. Some were known to be kind, others to be incredibly cruel; it was considered unlucky to view one of these havfine.

The German Mythologies of mermaids are plenty. There are the Meerfrau; the Nix and the Nixe who were the male and female fresh-water inhabitants and it was believed that they were treacherous to men. The nixe lured men to drown while the nix could be in the form of an old dwarfish character or as a golden-haired boy and in Iceland and Sweden could take the form of a centaur. The nix also loved music and could lure people to him with his harp, if he was in the form of a horse he would tempt people to mount him and then dash into the sea to drown them. While he sometimes desired a human soul he would often demand annual human sacrifices. There was also a more elvin kind of Nixies that would sometimes appear in the market, she could be identified by the corner of her apron being wet. If they paid a good price it would be an expensive year but if they paid a low price the prices for that year would remain cheap. In the Rhine were to be found the Lorelei from which the town took its name. The Germans also knew the Melusine as a double-tailed mermaid as did the British heraldry as well. There is a double-tailed mermaid to be found in the Art Gallery.

Russian mythology includes the daughters of the Water-King who live beneath the sea; the water-nymph that drowns swimmers known as the Rusalka and the male water-spirit known as the Vodyany who followed sailors and fishermen.

The Africans believed the tales of a fish-wife and river-witches. What we have seen here is the beginnings of the mermaid mythology that starts with the merman depictions of water-deities and other such pagan deities. The stories of mermaids as one may think of today, were formed after the rise of Christianity.

Merfolk and Christianity
There is a theory that during the suppression of pagan deities the mermaid and other minor supernatural beings were not seen as a threat to the growth and popularity of Christian beliefs. Some writers even go so far as to believe that the Church actually believed in the mermaid mythology, and for two particular reasons; the first is that the mermaid served as a moral emblem of sin, the femme fatale label we know so well was nurtured with this form of thinking; and the second was the quality of evidence from contemporary and ancient authors on the existence of mermaids added to this 'belief' the Church found in mermaids.

The symbol of the mermaid with her comb and mirror in hand seems to first be depicted during the Middle Ages. This came to represent to the Church vanity and female beauty which could cause the destruction of men. And so the mermaid mythology turned from that of near godlike status, including the fear that the sirens brought, to one of aesthetic values. The mermaid became a focus for misogynists and as thus rather than causing fear in the laity the mermaid became even more fascinating.

The Bestiaries of the early middle ages included the siren and not the mermaid. As the two creatures became confused in popular beliefs and cultures so too did the bestiary writers confuse the two, as can be seen in the above illustration of the siren, complete with a mermaids tail. Mermaids were well known in the bestiaries of Physiologus and his predecessors, where they compiled the zoological information of 'real' animals. Mermaid were believed to exist even by the most educated men.

In 1403 a mermaid was apparently found stranded in the mud after a storm in West Friesland. She was then taken, clothed and fed ordinary food. Some say that she lived for fifteen years in capture, trying to escape constantly; she was also taught to kneel before the crucifix and spin but she was never able to speak.

Raphael Holinshed, in his chronicles of 1587 wrote that in the reign of either John or Henry II, some fishers of Oreford in Suffolk, caught a man-shaped fish, who would not or could not speak, ate fish be it raw or cooked and finally escaped after two months, back to the sea. There are detailed accounts of recorded sightings that are mostly from the 1800's that can be read in the Sightings page.

In literature the mermaid began to be used as a description of women, rather than an identification of the creature herself. The mermaid had become a metaphor! Chaucer takes the mermaid and uses her as a scholarly metaphor for beautiful but dangerous song. Shakespeare is known to have used such a device in his Comedy of Errors.

Merfolk and the Rise of Science
With the growth of science, the fantastic became childish amongst the writers of the growing educated, especially during the eighteenth century, but began to flourish again with the Romantic movement at the turn of this century. It was also the time however for the scientifically-minded to do their utmost to dispel the myth of the mermaid, claiming that all the recorded sightings were simply men who'd been at sea too long and wanting to believe, and so when a seal, porpoise, dugong or manatee was spotted from the ship they'd swear they'd seen a mermaid.

It it from the nineteenth century that the reported sightings are so numerous. The sightings page shows where the sightings were and also the accompanying reports. Prominent, well-respected people writing in prominent papers conflict with the scientists apathy to the existence of such a fantastical creature.

Children's stories are filled with mermaids again, and this time they are written down and published. The mermaid figures in art once again allowing the artist to portray the division within human nature of the "animal" sexual nature and the intellectual thinking; represented by the tail of the mermaid and that human part of her that wishes to gain a soul. This is the first period the mention of the mermaid longing for a human soul is found in the history of the mermaid. The prime example being The Little Mermaid by Hans Andersen found in the Faerietales page, where the young mermaid gains a souls through her faithfulness. The mermaid is also seen as an elemental being and other water-beings are written about, such as The Water Babies by Charles Kingsley. The theme of mermaids longing for a mortal man is continued and broadened which can be seen especially in the plays of Peter Blackmore, Miranda and the sequel Mad About Men which were adapted to film and starred Glynis Johns.

It is also the time of frauds and there were many in America during the 1920's and 1930's, with the most famous one being the Feegee mermaid. Japanese freak shows too were notorious for their "mermaids", that merely consisted of the torso of a monkey and the tail of a fish stiched together and advertised as "mermaid corpses."

It is not until the twentieth century that the mermaid is tossed back and forth between those that believe, or want to believe, and those that stand behind their logic and scientific proof that a creature such as the mermaid simply cannot exist. A wonderful film of these two meeting is the film Splash, with Daryl Hannah and Tom Hanks. The mermaid becomes a symbol of fun and fantasy rather than an accepted part of cultural tradition and awe. She is seen as a figure of eroticism mixed with fear of the unknown, or the animal side of her nature. It is a great marketing tool for toys, cartoons, soft-porn, and women's swim wear. No matter how the mermaid is used or what role she plays she will always retain her mysterious air. Perhaps the next move is a more feminine one, bringing back the myth of the mermaid protecting women, or the soul of the woman drowned before her natural time of death....

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The Bermuda Triangle: fact or fiction?
A region of the Atlantic Ocean between Bermuda, Miami, Florida, and San Juan, Puerto Rico, where disappearances of ships and planes not only continue but continue to defy explanation. (See Map)

"It was Halloween, 1991. Radar controllers checked and rechecked what they had just seen. The scope was blank in a spot now. Everywhere else all seemed normal. Routine traffic was proceeding undisturbed, in their vectors, tracked and uninterrupted. But just moments earlier they had been tracking a Grumman Cougar jet. The pilot was John Verdi. He and trained co-pilot, Paul Lukaris, were on a flight toward Tallahassee
Moments before Verdi's voice had crackled over the receiver at the flight center: "Uh, this is November two four Whiskey Juliet (N24WJ). I am at, uh, two five three zero zero. Request ascent two niner zero. Over."
Permission was quickly granted. The turbo jet was then seen ascending from 25,300 feet to its cruising altitude of 29,000. All seemed normal.

They were still ascending. Verdi had not yet rogered reaching his new altitude. Radar continued to track the Cougar until, for some unknown reason, it simply faded away. Verdi and Lukaris answered no more calls to respond. They had sent no MAYDAY to indicate a problem. Read-outs of the radar observations confirmed the unusual: The Cougar had not been captured at all descending or falling to the sea. Frankly, it had just vanished while climbing; it simply faded away. One sweep they were there . . . the next?"
Gian J. Quasar, author of Into the Bermuda Triangle says: "Approaching the subject from the back door, so to speak, free of the hype and public forum, has yielded more startling information. For instance, no more than a few disappearances of airplanes have been reported in the last 2 decades, yet mystery has struck with skillful hands. Searches of the database of National Transportation Safety Board reveal some 75 aircraft have gone missing. Projecting Coast Guard statistics on missing boats is truly mind boggling, perhaps reaching over 2,000. Often when faced with what these reports contain, I have come away badly jolted. It has caused me to revise several well-known cases, and has made it possible to present accurate accounts of what has transpired in the last 20 years. These last, I must presume, are here to the public presented for the first time since I know of no other research done in this period."
The Theories
There have been numerous "theories" (more correctly hypotheses) concerning the Bermuda Triangle; Magnetic Variation, Vortex Kinesis, Methane Hydrates, Time & Being and The Hutchison Effect. See what Mr. Quasar has to say.
"Although the Bermuda Triangle looks like just a bucket of water when compared to all the oceans of the world, it does in fact cover approximately 1,500,000 square miles, roughly 500 thousand square leagues of sea." Click here to take a journey through the Bermuda Triangle.
History of the Devil's Triangle
"The region involved, a watery triangle bounded roughly by Florida, Bermuda, and Puerto Rico, measures less than a thousand miles on any one side." ...so George X. Sand introduced the Triangle to his readers in October 1952 in a short article for Fate magazine, entitled "Sea Mystery at our Back Door."

SUSTAINABLE TOURISM CRITERIA

A good ecotourism operation will strive to support the community and encourage travelers to be culturally sensitive by training and employing local people and by purchasing local supplies and services to further stimulate the economy. Increasingly, national governments such as Costa Rica and Australia are supporting the ecotourism trade for its benefit to both their country and their visitors. Tourist regions in many countries now rely on ecotourism as the primary source of revenue.







The education and good practices taught by ecotourism may also help foster sustainable development in a world increasingly faced by destructive practices such as clear-cutting forests and poor land-use policies that destroy habitats. Good ecotourism should ideally support criteria such as:






Conservation of biological and cultural diversity


Sustainable use of ecological resources


Support for local economies through increased local revenue, jobs for local populations, and use of local supplies and services


Community empowerment by sharing participation in management local ecotourism activities.


Increased environmental and cultural awareness


Minimal environmental tourist industry impact on local resources


Although the overall concept and intent of sustainable tourism is positive, the industry is not without its critics largely due to companies who abuse the concept of ecotourism to take advantage of the wealth generated by the interest in ecotourism. Some ecotourism operators have been accused of masking their environmentally destructive practices by marketing their businesses as ecotourism.






With time, the standards for good ecotourism will be established and both travelers and the industry will be aware of what constitutes an ecologically and culturally sensitive operation.

SUSTAINABLE TOURISM

Perhaps this is my favourite subject..Sustainable tourism encompasses the responsible use of natural resources for recreation. This includes eco-friendly boating, scuba-diving, fishing, and tourism.




Ecotourism is defined as leisure travel that provides tourists with an educational and adventurous experience visiting complex and fascinating ecosystems and their associated cultures and traditions. The concept of ecotourism began in the late 1980s and increased in popularity in 2002 during the United Nations "International Year of Ecotourism." According to environmental and other organizations, ecotourism should have a minimal impact on both the environment and the culture. Ecotourism should inform tourists about what's needed to sustain the environment they're visiting, and should also help local populations understand the importance and value of their home. Ecotourism can also help foster a sense of environmental stewardship by encouraging travelers to be mindful of wasting resources and polluting the environment. Ecotourism can also help local economies by generating revenue and jobs, which further encourages the local population to preserve its environment.

WATER RESOURCES

The ocean is one of Earth's most valuable natural resources. It provides food in the form of fish and shellfish—about 200 billion pounds are caught each year. It's used for transportation—both travel and shipping. It provides a treasured source of recreation for humans. It is mined for minerals (salt, sand, gravel, and some manganese, copper, nickel, iron and cobalt can be found in the deep sea) and drilled for crude oil.





The ocean plays a critical role in removing carbon from the atmosphere and providing oxygen. It regulates Earth's climate. The ocean is an increasingly important source of biomedical organisms with enormous potential for fighting disease. These are just a few examples of the importance of the ocean to life on land. Explore them in greater detail to understand why we must keep the ocean healthy for future generations....






Fishing Facts






The oceans have been fished for thousands of years and are an integral part of human society. Fish have been important to the world economy for all of these years, starting with the Viking trade of cod and then continuing with fisheries like those found in Lofoten, Europe, Italy, Portugal, Spain and India. Fisheries of today provide about 16% of the total world’s protein with higher percentages occurring in developing nations. Fisheries are still enormously important to the economy and well being of communities.


The word fisheries refers to all of the fishing activities in the ocean whether they are to obtain fish for the commercial fishing industry, for recreation, to obtain ornamental fish or fish oil. Fishing activities resulting in fish not used for consumption are called industrial fisheries. Fisheries are usually designated to certain ecoregions like the salmon fishery in Alaska, the Eastern Pacific tuna fishery or the Lofoten island cod fishery. Due to the relative abundance of fish on the continental shelf, fisheries are usually marine and not freshwater.






Although a world total of 86 million tons of fish were captured in 2000, China’s fisheries were the most productive, capturing a whopping one third of the total. Other countries producing the most fish were Peru, Japan, the United States, Chile, Indonesia, Russia, India, Thailand, Norway and Iceland- with Peru being the most and Iceland being the least. The number of fish caught varies with the years but appears to have leveled off at around 88 million tons per year possibly due to overfishing, economics and management practices.






Fish are caught in a variety of ways including one man casting nets, huge trawlers, seining, driftnetting, handlining, longlining, gillnetting and diving. Other than overfishing, fishing practices harmful to the environment are illegal and often used in developing countries where local fisherman have no other immediate choice.






The most common species making up the global fisheries are herring, cod, anchovy, flounder, tuna, shrimp, mullet, squid, crab, salmon, lobster, scallops and oyster. Mollusks and crustaceans are also widely sought. The fish that are caught are not always used for food. In fact, about 40% of fish are used for other purposes such as fishmeal to feed fish grown in captivity. For example cod is used for consumption but also to freeze for later use. Atlantic herring is used for canning, fishmeal and fish oil. The Atlantic menhaden is used for fishmeal and fish oil and Alaska Pollock is consumed but also used for fish paste to simulate crab. The Pacific cod has recently been used as a substitute for Atlantic cod which has been overfished.






The amount of fish available in the oceans is an ever-changing number due to the effects of both natural causes and human developments. It will be necessary to manage ocean fisheries in the coming years to make sure the number of fish caught never makes it to zero. A lack of fish greatly impacts the economy of communities dependent on the resource as can be seen in Japan, eastern Canada, New England, Indonesia and Alaska. The anchovy fisheries off the coast of western South America have already collapsed and with numbers dropping violently from 20 million tons to 4 million tons- they may never fully recover. Other collapses include the California sardine industry, the Alaskan king crab industry and the Canadian northern cod industry. In Massachusetts alone the cod, haddock and yellowtail flounder industries have collapsed causing an economic disaster for the area.






Due to the importance of fishing to the worldwide economy and the need for humans to understand human impacts on the environment, the academic division of fisheries science was developed. Fisheries science includes all aspects of marine biology in addition to economics and management skills and information. Marine conservation issues like overfishing, sustainable fisheries and management of fisheries are also examined through fisheries science.






In order for there to be plenty of fish in the years ahead, fisheries will have to develop sustainable fisheries and some will have to close. Due to the constant increase in the human population the oceans have been overfished with a resulting decline of fish crucial to the economy and communities of the world. The control of the world’s fisheries is a controversial subject, as they cannot produce enough to satisfy the demand, especially when there aren’t enough fish left to breed in healthy ecosystems. Scientists are often in the role of fisheries managers and must regulate the amount of fishing in the oceans, a position not popular with those who have to make a living fishing ever decreasing populations.






The two main questions facing fisheries management are:






1) What is the carrying capacity of the ocean? How many fish are there and how many of which type of fish should be caught to make fisheries sustainable?






2) How should fisheries resources be divided among people?






Fish populate the ocean in patches instead of being spread out throughout the enormous expanse. The photic zone is only 10-30 m or 30-100 ft deep near the coastline, a place where phytoplankton have enough solar energy to grow in abundance and fish have enough to eat. Most commercial fishing takes place in these coastal waters as well as estuaries and the slope of the continental shelf. High nutrient contents from upwelling, run-off, the regeneration of nutrients and other ecological processes supply fish in these areas with the necessary requirements for life. The blue color of the water near the coastlines is the result of chlorophyll contained in aquatic plant life.






Most fish are only found in very specific habitats. Shrimp are fished in river deltas that bring large amounts of freshwater into the ocean. The areas of highest productivity known as banks are actually where the continental shelf extends outward towards the ocean. These include the Georges Bank near Cape Cod, the Grand Banks near Newfoundland and Browns bank. Areas where the ocean is very shallow also contain many fish and include the middle and southern regions of the North Sea. Coastal upwelling areas can be found off of southwest Africa and off South America’s western coast. In the open ocean, tuna and other mobile species like yellowfin can be found in large amounts.






The question of how many fish there are in the ocean is a complicated one but can be simplified using populations of fish instead of individuals. The word “cohort” refers to the year the fish was born and is used to gather population statistics. Cohorts start off as eggs with an extremely high rate of mortality, which declines as the fish gets older. Juvenile fish close to the age where they can be fished are called recruits. Cohort mortality is tied in with the species of fish due to variances in natural mortality. The biomass of a particular cohort is greatest when fish are rapidly growing and decreases as the fish get older and start to die.






Scientists used theories and models to help determine the number and size of fish populations in the ocean. Production theory is the theory that production will be highest when the number of fish does not overwhelm the environment and there are not too few for genetic diversity of populations. The maximum sustainable yield is produced when the population is of intermediate size. Yield-per-recruit theory is the quest to determine the optimum age for harvesting fish. The theory of recruitment and stock allows scientists to make a guess about the optimum population size to encourage a larger population of recruits. All of the above theories must be flexible enough to allow natural fluctuations in the fish population to occur and still gather significant data. However, the theories are limited when taking into account the effect of humans on the environment and misinformation could result in overfishing or underfishing of the oceans resources.






Other factors that must be taken into account are the ecological requirements of individual fish species like predation and nutrition and why fish will often migrate to different areas. Water temperatures also influence the behavior of ecosystems causing an increase in metabolism and predation or a sort of hibernation. Even the amount of turbulence in the water can affect predator- prey relationships with more meetings between the two when waters are stirred up. Global warming could have a huge economic impact on the fisheries when fish stocks are forced to move to waters with more tolerable temperatures.






In many countries, commercial fishing has found more temporarily economical ways of catching fish including gill nets, purse seines, and drift nets. Although fish are trapped efficiently in one day using these fishing practices, the number of fish that are wasted this way has reached 27 million tons per year not to mention the crucial habitats destroyed that are essential for the regeneration of fish stocks. In addition, marine mammals and birds are also caught in these nets. The wasted fish and marine life is referred to as bycatch, an unfortunate side-effect of unsustainable fishing practices that can turn the ecosystem upside-down and leave huge amounts of dead matter in the water. Other human activities like trawling and dredging of the ocean floor have bulldozed over entire underwater habitats. The oyster habitat has been completely destroyed in many areas from the use of the oyster patent tong and sediment buildup draining from farm runoff.






Shipping






The word “shipping” refers to the activity of moving cargo with ships in between seaports. Wind-powered ships exist but more often ships are powered by steam turbine plants or diesel engines. Naval ships are usually responsible for transporting most of trade from one country to another and are called merchant navies. The various types of ships include container ships, tankers, crude oil ships, product ships, chemical ships, bulk carriers, cable layers, general cargo ships, offshore supply vessels, Dynamically Positioned ships, ferries, gas and car carriers, tugboats, barges and dredgers.










In theory, shipping can have a low impact on the environment. It is safe and profitible for economies around the world. However, serious problems occur with the shipping of oil, dumping of waste water into the ocean, chemical accidents at sea, and the inevitable air and water pollution occuring when modern day engines are used. Ships release air pollutants in the form of sulphur dioxide, nitrogen oxides, carbon dioxide, hydrocarbons and carbon monoxide. Chemicals dumped in the ocean from ships include chemicals from the ship itself, cleaning chemicals for machine parts, and cleaning supplies for living quarters. Large amounts of chemicals are often spilled into the ocean and sewage is not always treated properly or treated at all. Alien species riding in the ballast water of ships arrive in great numbers to crash native ecosystems and garbage is dumped over the side of many vessels. Dangerous industrial waste and harmful substances like halogenated hydrocarbons, water treatment chemicals, and antifouling paints are also dumped frequently. Ships and other watercraft with engines disturb the natural environment with loud noises, large waves, frequently striking and killing animals like manatees and dolphins.






Tourism






Tourism is the fastest growing division of the world economy and is responsible for more than 200 million jobs all over the world. In the US alone, tourism resulted in an economic gain of 478 billion dollars. With 700 million people traveling to another country in the year 2000, tourism is in the top five economic contributors to 83% of all countries and the most important economy for 38% of countries. The tourism industry is based on natural resources present in each country and usually negatively affect ecosystems because it is often left unmanaged. However, sustainable tourism can actually promote conservation of the environment.


















The negative effects of tourism originate from the development of coastal habitats and the annihilation of entire ecosystems like mangroves, coral reefs, wetlands and estuaries. Garbage and sewage generated by visitors can add to the already existing solid waste and garbage disposal issues present in many communities. Often visitors produce more waste than locals, and much of it ends up as untreated sewage dumped in the ocean. The ecosystem must cope with eutrophication, or the loss of oxygen in the water due to excessive algal bloom as well as disease epidemics. Sewage can be used as reclaimed water to treat lawns so that fertilizers and pesticides do not seep into the ocean.






Other problems with tourism include the overexploitation of local seafood, the destruction of local habitats through careless scuba diving or snorkeling and the dropping of anchors on underwater features. Ecotourism and cultural tourism are a new trend that favors low impact tourism and fosters a respect for local cultures and ecosystems.






Mining






Humans began to mine the ocean floor for diamonds, gold, silver, metal ores like manganese nodules and gravel mines in the 1950s when the company, Tidal Diamonds, was established by Sam Collins. Diamonds are found in greater number and quality in the ocean than on land but are much harder to mine. When diamonds are mined, the ocean floor is dredged to bring it up to the boat and sift through the sediment for valuable gems. The process is difficult sediment is not easy to bring up to the surface but will probably become a huge industry once technology evolves to solve the logistical problem.






Metal compounds, gravels, sands and gas hydrates are also mined in the ocean. Mining of manganese nodules containing nickel, copper and cobalt began in the 1960’s and soon after it was discovered that Papua New Guinea was one of the few places where nodules were located in shallow waters rather than deep waters. Although manganese nodules could be found in shallow waters in significant quantities, the expense of bringing the ore up to the surface proved to be expensive. Sands and gravels are often mined for in the United States and are used to protect beaches and reduce the effects of erosion.






Mining the ocean can be devastating to the natural ecosystems. Dredging of any kind pulls up the ocean floor resulting in widespread destruction of marine animal habitats as well as wiping out vast numbers of fishes and invertebrates. When the ocean floor is mined, a cloud of sediment rises up in the water interfering with photosynthetic processes of phytoplankton and other marine life in addition to introducing previously benign heavy metals into the food chain. As minerals found on land are exploited and used up, mining of the ocean floor will increase.






Climate Buffer






The ocean is an integral component of the world’s climate due to its capacity to collect, drive and mix water, heat and carbon dioxide. The ocean can hold and circulate more water, heat and carbon dioxide than the atmosphere although the components of the Earth’s climate are constantly exchanged. Because the ocean can store so much heat, seasons occur later than they would and air above the ocean is warmed. Heat energy stored in the ocean in one season will affect the climate almost an entire season later. The ocean and the atmosphere work together to form complex weather phenomena like the North Atlantic Oscillation and El Nino. The ocean could also buffer events like the greenhouse effect or global warming, holding the heat energy for long periods of time to be released at a later date. The many chemical cycles occurring between the ocean and the atmosphere also influence the climate by controlling the amount of radiation released into ecosystems and our environment.






The atmosphere directly above the ocean does not absorb much heat by itself, so in order for it to warm up, the temperature of the ocean has to rise first. The two other ways for the atmosphere to warm near the ocean are by reflection of light off of the surface of the ocean or by the evaporation of water from the ocean surface. The temperature of the ocean controls the climate in the lower part of the atmosphere; so for most areas of the Earth the ocean temperature is responsible for the air temperature.






The main forms of climate buffering by the ocean are by the transport of heat through ocean currents traveling across huge basins. Areas like the tropics end up being cooled and higher latitudes are warmed by this effect. Air temperatures worldwide are regulated by the circulation of heat by the oceans. The ocean stores heat in the upper two meters of the photic zone. This is possible because seawater has a very high density and specific heat and can store vast quantities of energy in the form of heat. The ocean can then buffer changes in temperature by storing heat and releasing heat. Evaporation cools ocean water which cools the atmosphere. It is most noticeable near the equator and the effect decreases closer to the poles.






Oxygen Production






Gases in the atmosphere like carbon, nitrogen, sulfur and oxygen are dissolved through the water cycle. The gases that are now crucial to all ecosystems and biological processes originally came from the inside layers of the earth during the period when the earth was first formed. The rate of flow for oxygen (as well as other gases) is controlled by biological processes, especially metabolism of organisms like prokaryotes and bacteria. Prokaryotes have been around since the beginning of the Earth, have evolved to be able to use chemical energy to create organic matter and are capable of both reducing and oxidizing inorganic compounds. Bacteria that can reduce inorganic compounds are anaerobic and those that oxidize inorganic compounds are aerobic. Aerobic bacteria release oxygen as a by-product of photosynthesis.






Approximately 2 billion years ago, aerobic bacteria began producing oxygen which gradually filled up all of the oxygen reservoirs in the environment. Once these “sinks” were filled, molecular oxygen began to build in the atmosphere, creating an environment favorable for other life to inhabit the Earth. Sinks included reduced iron ions and hydrogen sulfide gas. Evidence of this process can be found in the banded iron formations created when iron minerals were precipitated. The oxygen started to fill the atmosphere up and new bacteria evolved that could use oxygen to oxidize both inorganic and organic compounds. Bacteria that were accustomed to an oxygen-poor atmosphere only survived in anaerobic environments like sewage, swamps, and in the sediments of both marine and freshwater areas.






Phytoplankton account for possibly 90% of the world’s oxygen production because water covers about 70% of the Earth and phytoplankton are abundant in the photic zone of the surface layers. Some of the oxygen produced by phytoplankton is absorbed by the ocean, but most flows into the atmosphere where it becomes available for oxygen dependent life forms.

DUMPING GROUND

SEA AS DUMPING GROUND







Runoff and Pollution






Although the ocean covers two-thirds of the surface of the Earth, it is surprisingly vulnerable to human influences such as overfishing, pollution from run-off, and dumping of waste from human activity. This kind of pollution can have serious economic and health impacts by killing marine life and damaging habitats and ecosystems. Toxins from pesticides, fertilizers, and other chemicals used on farms contaminate nearby rivers that flow into the ocean, which can cause extensive loss of marine life in bays and estuaries leading to the creation of dead zones. The dumping of industrial, nuclear and other waste into oceans was legal until the early 1970s when it became regulated; however dumping still occurs illegally everywhere.






Ocean Dumping






Governments world-wide were urged by the 1972 Stockholm Conference to control the dumping of waste in their oceans by implementing new laws. The United Nations met in London after this recommendation to begin the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter which was implemented in 1975. The International Maritime Organization was given responsibility for this convention and a Protocol was finally adopted in 1996, a major step in the regulation of ocean dumping.






Waste in the Ocean






The most toxic waste material dumped into the ocean includes dredged material, industrial waste, sewage sludge, and radioactive waste. Dredging contributes about 80% of all waste dumped into the ocean adding up to several million tons of material dumped each year. Rivers, canals, and harbors are dredged to remove silt and sand build up or to establish new waterways. About 20-22% of dredged material is dumped into the ocean. The remainder is dumped into other waters or landfills and some is used for development. About 10% of all dredged material is polluted with heavy metals such as cadmium, mercury, and chromium; hydrocarbons such as heavy oils; nutrients including phosphorous and nitrogen; and organochlorines from pesticides. Waterways and therefore silt and sand accumulate these toxins from land runoff, shipping practices, industrial and community waste, and other sources. When these materials find their way into the ocean, marine organisms suffer toxic effects and seafood is often contaminated

ALIEN SPECIES

The introduction of non-native species to an ecosystem is one of the major causes of decreased biodiversity. Termed alien species, they are also known as exotic, introduced, non-indigenous, or invasive species. As the names imply, these species do not belong to ecosystems in which they are either intentionally or unintentionally placed. They tend to disrupt the ecosystem's balance by multiplying rapidly. These specise are often plants, fishes, mollusks, crustaceans, algae, bacteria or viruses.




Many alien species are tranferred into marine ecosystems through the ballast water transported during commercial shipping operations. Ship ballast water may transport up to 3,000 species around the world every day. Alien species are often introduced into freshwater ecosystems such as estuaries, rivers, lakes and streams by humans discarding animals or plants formerly held in captivity. In some cases, species used as bait can invade freshwater ecosystems. Well-known invasive species include the Northern Snakehead fish, the Zebra mussel, the Sea Lamprey and the Asiatic Clam, Corbicula fluminea.



Effects on Humans



The introduction of an alien species is often responsible for an increase in predation and competition, habitat reduction, a variety of diseases, extinction of native plants or animals and genetic change in populations. Certain strains of cholera have been transported in ballast water ending up in oyster beds and infecting finfish destined for the dinner table.



Alien Species Aboard



Alien species are often transported to non-native habitats in the ballast of ships. The organisms are taken in when ships attempt to balance their load by letting water into their holding tanks. When they reach their destination, the ballast water is released and with it any organisms picked up earlier. Mollusks and other organisms whose habitat includes marine substrate also attach to the surfaces ocean-going vessels at the point of departure and then fall into the water at the destination.



Unintentional introductions



Aquarium plants and animals, such as the invasive algae Caulerpa, as well as ornamental plants like the Purple loosestrife are released innocently into waterways by humans. They quickly overgrow eventually choking native plants and interfering with the water flow of lakes, rivers, estuaries, and streams. Unwanted exotic fish, such as the Red Lionfish, Pterois volitans, have invaded the waters of the Southeastern United States. The introduction of this nonnative species may cause problems becaues of its poisonous spines that divers or swimmers may be unaware of and it may also pose a risk to native species through predation or competition.



Intentional Introductions



Alien species like the Cane toad have been introduced intentionally to reduce the number of a native species in the area. Unfortunately, this plan can backfire when the animal multiples quickly and takes over the habitat and beyond. In Hawaii, for example, the Mongoose has eliminated many species of birds but it was originally introduced to keep the rat population down. The kudzu plant that blankets much of the southern United States was the result of a program sponsored by the government to control erosion.