Weekly Newsletter | | Other topics

News articles on oceans

---

Mongabay.com news articles on oceans in blog format. Updated regularly.

Coastal seagrass disappearing as quickly as coral reefs and rainforests

(06/30/2009) Findings from the first comprehensive global survey of coastal seagrass ecosystems are nothing to cheer about. Fifty-eight percent of seagrass meadows are declining, according to an international team of scientists who compiled data from 215 studies and 1,800 observations of seagrass habitat beginning in 1879. Since that year, 29 percent of seagrass ecosystems have vanished entirely.


Over 30 percent of open ocean sharks and rays face extinction

(06/25/2009) The first global study of open ocean (pelagic) sharks and rays found that 32 percent of the species are threatened with extinction largely due to overfishing and bycatch, making pelagic sharks and rays more threatened than birds (12 percent), mammals (20 percent), and even amphibians (31 percent), which are considered to be undergoing an extinction crisis. The situation worsens when only sharks taken in high-seas fisheries are considered: 52 percent of these species are threatened.


What is the crop productivity and environmental impact of too much or too little fertilizer?

(06/18/2009) While the use of synthetic fertilizer has greatly increased agricultural production globally—helping to feed a global population that is not slowing down—it has brought with it high environmental costs. Fertilizer runoff has polluted many coastal regions creating ‘dead zones’ where the ocean is starved of oxygen by the influx of nitrogen. Synthetic fertilizers have also polluted the air with ammonia, and sent emissions of nitrous oxide into the atmosphere, contributing to global warming.


New report predicts dire consequences for every U.S. region from global warming

(06/17/2009) Government officials and scientists released a 196 page report detailing the impact of global warming on the U.S. yesterday. The study, commissioned in 2007 during the Bush Administration, found that every region of the U.S. faces large-scale consequences due to climate change, including higher temperatures, increased droughts, heavier rainfall, more severe weather, water shortages, rising sea levels, ecosystem stresses, loss of biodiversity, and economic impacts.


Will jellyfish take over the world?

(06/16/2009) It could be a plot of a (bad) science-fiction film: a man-made disaster creates spawns of millions upon millions of jellyfish which rapidly take over the ocean. Humans, starving for mahi-mahi and Chilean seabass, turn to jellyfish, which becomes the new tuna (after the tuna fishery has collapsed, of course). Fish sticks become jelly-sticks, and fish-and-chips becomes jelly-and-chips. The sci-fi film could end with the ominous image of a jellyfish evolving terrestrial limbs and pulling itself onto land—readying itself for a new conquest.


UN calls for global ban on plastic bags to save oceans

(06/09/2009) The UN’s top environmental official called for a global ban on plastic bags yesterday. "Single use plastic bags which choke marine life, should be banned or phased out rapidly everywhere. There is simply zero justification for manufacturing them anymore, anywhere," said Achim Steiner, executive director of the U.N. Environment Program.


10 ways you can help protect oceans

(06/08/2009) Monday June 8th, 2009 is World Ocean Day, which the United Nations launched to raise awareness about oceans and coastal ecosystems. Roughly 80 percent of life on Earth depends on oceans and coasts, while more than a third of the humanity lives in coastal areas or on small islands. Oceans provide mankind with more than $21 trillion annually in goods and services, including food, energy, transportation, and recreation. But oceans and coastal ecosystems are increasingly under threat from pollution, unsustainable fishing practices, destruction of habitats, and the effects of increased carbon dioxide emissions (warmer temperatures and ocean acidification). In recognition of the importance of maintaining healthy marine ecosystems, The Nature Conservancy is offering a set of ten tips to help to protect these resources for future generations.


Marine scientist calls for abstaining from seafood to save oceans

(06/08/2009) In April marine scientist Jennifer Jacquet made the case on her blog Guilty Planet that people should abstain from eating seafood to help save life in the ocean. With fish populations collapsing worldwide and scientists sounding warnings that ocean ecosystems—as edible resources—have only decades left, it is perhaps surprising that Jacquet’s call to abstain from consuming seafood is a lone voice in the wilderness, but thus far few have called for seafood lovers to abstain.


Polluted, degraded ecosystems can recover in less than a lifetime

(05/31/2009) Restoration efforts can return polluted or degraded landscapes to previous states in less than a lifetime, according to study Yale School of Forestry and Environmental Studies. The study rebuts a common assumption that ecosystem recovery takes centuries, even millennia.


Permian mass extinction caused by giant volcanic eruption

(05/28/2009) Two hundred and sixty million years ago the Earth experienced its worst mass extinction: 95 percent of marine life and 70 percent of terrestrial life vanished. Long a subject of dispute, researchers from the University of Leeds believe they have confirmed the reason behind the so-called Permian extinction.


Sushi restaurant, Nobu, warns patrons not to eat bluefin tuna, but serves it anyway

(05/27/2009) Last year, Nobu was caught red-handed serving critically-endangered bluefin tuna to patrons, even after servers claimed its tuna was not bluefin. Now after heavy criticism, the trendy restaurant, owned by Robert DeNiro and popular with celebrities, has finally taken action.


Starfish may benefit from global warming

(05/25/2009) Climate change is expected to cause widespread disruptions to ecosystems and their resident species. Some creatures will go extinct, others will expand their ranges and thrive. A new study identifies starfish as one of the likely winners from rising ocean temperatures and carbon dioxide concentrations.


85 percent of oyster reefs gone, threatening coastal environments and a favored delicacy

(05/21/2009) The first global report on the state of shellfish was released today at the International Marine Conservation Congress in Washington, DC. Painting a dire picture for shellfish worldwide, the report found that 85 percent of oyster reefs have vanished.


Six nations pledge to protect the Coral Triangle

(05/19/2009) Last Friday, six nations signed a pledge launching the Coral Triangle Initiative on Coral Reefs, Fisheries and Food Security (CTI-CFF). Indonesia, the Philippines, Timor Leste, Papua New Guinea, Solomon Islands, and Malaysia each agreed to protect the Coral Triangle, a region spanning 1.6 billion acres, half the size of the US.


Scientists find world’s largest leatherback sea turtle population in Gabon

(05/17/2009) Scientists have found the world’s largest population of nesting leatherback sea turtles. On the beaches of Gabon in West Africa land and air surveys estimated the small country’s leatherback population to be between 15,730 and 41,373 individual females. The findings are published in Biological Conservation. Leatherback sea turtles are currently considered critically endangered by the IUCN, however these new numbers may cause marine biologists to reconsider that ranking.


Tropical storms may create seeds for reef restoration

(05/16/2009) Tropical reefs are easy to destroy and difficult to fix. It is estimated that global warming, unsustainable fishing, and pollution have already destroyed 20% of the world’s coral reefs. Recently, Virginia Garrison and Greg Ward of the United States Geological Survey (USGS) demonstrated how coral fragments that have broken loose during storms can be used to rebuild reefs. They reported their results in the October issue of Biological Conservation.


Blue whales return to migration pattern used before commercial whaling

(05/13/2009) The blue whale may be returning to a migration route that it abandoned during commercial whaling. Researchers have discovered whales migrating from California to the coastlines of British Columbia and the Gulf of Alaska for the first time since 1965. Fifteen different cases of whales have been recorded in the north Pacific; four of the whales were individuals who had been viewed off the coast of California, as well.


Turkey ignores bluefin tuna quotas, further imperiling critically-endangered species

(05/12/2009) A few weeks into the bluefin tuna fishing season and Turkey has decided to go it alone. Breaking international agreements, the Turkish government has announced that it will ignore agreed-upon bluefin tuna quotas. The news is not good for the survival of the critically-endangered fish species, since Turkey operates the largest Mediterranean fleet for bluefin tuna.


Fish operated on at ZSL London Zoo: Photo

(05/11/2009) A female prickly leatherjacket triggerfish Chaetodermis penicilligerus underwent an operation to remove a benign tumor from her tail at the Zoological Society of London (ZSL) Zoo.


Secret movements of the basking shark uncovered

(05/07/2009) Researchers with the Massachusetts Mariner Fisheries have uncovered the secret life of the world’s second largest fish, known for its cavernous mouth. The basking shark, which measures over 10 meters and weighs as much as seven tons, has long baffled scientists by disappearing from view half of every year. A new study from Current Biology found that the basking shark spends this time deep in the Atlantic’s tropical waters.


Coral reef loss in Caribbean leads to ongoing fish declines

(04/30/2009) Analyzing 48 surveys of Caribbean fish populations over fifty years, from 1955-2007, a new meta-study has found that fish populations in the famously clear waters began to drop in the mid-90s, leading to a consistent decline that hasn’t stopped. The study published in Current Biology discovered a region-wide decline of about 3-6 percent per year in three out of six trophic groups of fish, i.e. groupings of species categorized by their place on the food chain. The declines didn’t show major differences between species targeted by fishermen and those that are not, implying that overfishing isn’t the only cause of the decline in the Caribbean.


New protections for coral reefs and dwindling fish species in Belize

(04/27/2009) Coral reefs in Belize, considered to be some of the most pristine in the west, have secured additional protections. Rene Montero, the Minister of Agriculture and Fisheries, signed a set of new laws this month to protect Belize’s coral reefs and the fish that inhabit them. The additional laws protect increasingly overfished species, ban spearfishing in marine reserves, and create no-take zones, according to a press release from the Wildlife Conservation Society (WCS).


River systems worldwide are losing water due to global warming

(04/22/2009) Many rivers around the world are losing water due to global climate change, according to a new study from the American Meteorological Society's Journal of Climate. Large populations depend on some of the rivers for everything from agriculture to clean drinking resources, including the Yellow River, the Ganges, the Niger, and the Colorado, which have all shown significant declines.


Extremophiles discovered below Antarctic glacier are remnants of marine life

(04/16/2009) Living in isolation for millions of years, cut off from sunlight and oxygen, surviving by breathing iron beneath an Antarctic glacier—such are the conditions of newly-discovered microbes living under Taylor Glacier in Antarctica’s desert-waste, the McMurdo Dry Valleys.


Study confirms that sonar can cause deafness in dolphins

(04/08/2009) A new study in Biology Lettersconfirms what marine biologists have long suspected: loud sonar can cause temporary deafness in dolphins, possibly explaining some mass strandings. The study, using a captive dolphin in a controlled experiment, found that sonar at high prolonged levels could even lead to slight behavioral changes.


Whale sharks threatened by interbreeding

(04/08/2009) The world's largest living fish, the whale shark, is threatened by interbreeding, according to a new study in PLoS ONE. Comparing the DNA of 68 individual whale sharks from eleven locations across the globe, geneticists found that the whale sharks had little genetic variation between the populations.


Marine Protected Areas too small for whales and dolphins

(04/07/2009) Current Marine Protected Areas (MPAs) are too small to adequately serve whales and dolphins according to the Whale and Dolphin Conservation Society (WDCS). The international organization is calling for a global network of MPAs to save the ocean's most beloved inhabitants. "A worldwide effort must be made urgently to identify and define whale and dolphin critical habitats and hot spots,” said WDCS Research Fellow, Erich Hoyt.


Revolutionary new theory overturns modern meteorology with claim that forests move rain

(04/01/2009) Two Russian scientists, Victor Gorshkov and Anastassia Makarieva of the St. Petersburg Nuclear Physics, have published a revolutionary theory that turns modern meteorology on its head, positing that forests—and their capacity for condensation—are actually the main driver of winds rather than temperature. While this model has widespread implications for numerous sciences, none of them are larger than the importance of conserving forests, which are shown to be crucial to 'pumping' precipitation from one place to another. The theory explains, among other mysteries, why deforestation around coastal regions tends to lead to drying in the interior.


Crabs feel pain, and remember it too

(03/30/2009) Research from Queen's University Belfast has raised new issues about the culinary arts. Long-thought by cooks and diners to be insensible to pain, a new study published in the journal Animal Behvaiour shows that crabs not only feel pain but remember it well-enough after the sensation has passed to affect their future decisions. According to Dr. Bob Elwood, who headed up the research, the study should bring about changes in how crustaceans like crabs are treated by the fishing and food industries.


Harbor seals return to New York

(03/26/2009) More than a hundred years passed, and the Hudson River and Atlantic Ocean estuary was cleaned up—enough to support the comeback of the harbor seal. In spring of 2006, kayakers and recreational boaters who frequent the waters around the Verrazano Bridge, took note of what appeared to be marine mammals that had not been there before. Were there harbor seals, again in this urban estuary? The boaters notified the Kingsborough Community College for Maritime Studies and the New York Aquarium, who teamed up to investigate, and thus, began the first annual harbor seal survey.


New technology allows researchers to study mass migrations of fish

(03/26/2009) Employing a new technology, MIT engineers have studied the origins of a mass gathering of hundreds of millions of fish and their subsequent migration. This is the first time a mass migration of animals has been studied from beginning to end, according to their paper published in Science.Until now biologists have depended on theory rather than data from the field, employing computer simulations and experiments in the lab.


Twenty years on, some birds still haven't recovered from Exxon Valdez oil spill

(03/24/2009) Twenty years ago today—at 12:04 AM on March 24th, 1989—the Exxon Valdez tanker struck Bligh reef in Prince William Sound causing 10.8 million gallons of crude oil to spill into the sea. The spill decimated the ecosystem and wildlife for 11,000 square miles and became one of the world's most infamous oil spills. Twenty years later, researchers say that several bird species have yet to recover from the spill.


Ebay bidders to decide new shrimp's name

(03/24/2009) A new way to raise conservation funds has captured attention worldwide. The Australian Marine Conservation Society (AMCS) has auctioned the naming rights of a newly discovered species of shimp Ebay. "The shrimp is in the group or genus of shrimps known as Lebbeus, but is awaiting the addition of a unique species name," said Anna McCallum, a Melbourne scientist who discovered the new species in deep waters off the Southwest coast of Australia.


Ocean fertilization will not help reduce CO2 levels, suggests experiment

(03/24/2009) A controversial 'ocean fertilization' experiment suggests seeding the seas with iron to boost carbon-absorbing phytoplantkon will not sequester much carbon dioxide from the atmosphere. Some — including researchers and private companies — had hoped iron fertilization might be an easy fix for climate change.


Plastic garbage accounts for one-third of leatherback sea turtle mortalities

(03/17/2009) A new study in Marine Pollution Bulletin has confirmed that the world's largest sea turtle is succumbing in startling numbers to an environmental issue that receives little attention: plastic trash in the oceans.


Tuna industry launches new organization to save tuna from itself

(03/16/2009) Yesterday saw the launch of the International Seafood Sustainability Foundation (ISSF). Composed of scientists, environmental organizations, and the tuna industry, ISSF will focus on ensuring that tuna populations are preserved from overfishing.


Shortsighted recommendations to eat more fish ignore large-scale environmental impact

(03/16/2009) Recommendations by international health agencies, doctors, nutritionists, and the media to consume more fish for better health ignore the fact that fish stock are collapsing worldwide, reports a new study published in the Canadian Medical Association Journal. “Even at current levels of fish consumption, fisheries globally have reached a state of severe crisis. Already, the demand from affluent and developing economies, particularly newly affluent China, cannot be met by the world’s fisheries,” states the new report.


Rise in sea levels due to global warming could imperil New York City

(03/16/2009) A new study shows that sea levels along the United States' northeastern coast will rise nearly twice as fast during this century than previous predictions. By 2100 the waters around New York city could rise as much as 18 inches, leaving Manhattan particularly vulnerable to flooding from hurricanes and winter storm surges.


Shells thinning due to ocean acidification

(03/13/2009) By soaking up excess CO2 from the atmosphere oceans are undergoing a rise in acidity which is having ramifications across their ecosystems, most frequently highlighted in the plight of coral reefs around the world. However, a new study in Nature Geoscience shows that the acidification is affecting another type of marine life. Foraminifera, a tiny amoeba-like entity numbering in the billions, have experienced a 30 to 35 percent drop in their shell-weight due to the high acidity of the oceans.


Seven new species of deep sea coral discovered

(03/09/2009) In the depths of the Papahānaumokuākea Marine National Monument, which surrounds ten Hawaiian islands, scientists discovered seven new species of bamboo coral. Supported by the National Ocean and Atmospheric Administration (NOAA), the discoveries are even more surprising in that six of the seven species may represent entirely new genus of coral.


Infant blue whale filmed underwater

(03/06/2009) Off the waters of Costa Rica in January 2008 scientists and photographers with National Geographic filmed an infant blue whale swimming near its mother. They believe this is the first time a baby blue whale has been filmed underwater.


400-million-year-old fish at risk from harbor project

(02/26/2009) A harbor project in Tanzania may put a population of coelacanth at risk, reports Nature News.


Illegal fishing estimated at $10-24B per year

(02/26/2009) Global losses from illegal and unreported fishing are estimated at $10-23.5 billion per year, according to a new study published in PLoS One. Analyzing fishing data from 54 countries, David J. Agnew of Imperial College London and colleagues estimate the "Illegal, Unreported and Unregulated" (IUU) fish catch at 11 to 26 million tons per each year. The authors found a strong link between governance and illegal fishing — illicit practices were most widespread in developing countries with poor monitoring and law enforcement. Estimated catches in West Africa were 40 percent higher than reported catches.


Iceland reaffirms whaling targets for 2009

(02/19/2009) Iceland's interim government will allow whaling to continue through 2009 but left in question whether it would be permitted in the future, reports Reuters.


Climate change doubles coastal erosion in Alaska over 5-year period

(02/18/2009) Coastal erosion along a 64-kilometer (40-mile) stretch of Alaska's Beaufort Sea doubled between 2002 and 2007, report researchers, who link the development to "declining sea ice extent, increasing summertime sea-surface temperature, rising sea level, and increases in storm power and corresponding wave action."


Climate change to have a big impact on marine fisheries

(02/18/2009) Climate change will have a big impact on marine fisheries, report scientists writing in the journal Fish and Fisheries.


Photos: 13,000 species found in Arctic, Antarctic Oceans

(02/16/2009) A marine census has documented more than 13,000 species in the Arctic and Antarctic Oceans, including several hundred that may be new to science. Conducted over a two-year period under often perilous conditions — including monster waves and dangerous polar bears — the series of 18 surveys turned up a wealth of information on the diversity, distribution and abundance of marine life. The research will also help establish a baseline for measure changes in polar ecosystems.


Fishermen - not whales as claimed by Japan - are the cause of fisheries depletion

(02/12/2009) Fishermen calling for a resumption of whaling to restore commercial fish stocks are taking the wrong approach, argue researchers writing in the journal Science. Analyzing data on fish catch and whale abundance off the coast of northwestern Africa and the Caribbean, Leah R. Gerber and colleagues show that fishermen remove far more fish than whales consume, undermining the agreement by whaling nations that whales are driving depletion of fisheries.


Obama blocks offshore oil drilling for now

(02/11/2009) The Obama administration has shelved a plan by the Bush Administration to open U.S. coastal waters to oil and gas drilling. The proposal, put forth on the last business day of the Bush Administration, had been vehemently opposed by environmental groups.


As sea ice retreats, swathe of Arctic closed to fishing

(02/06/2009) The North Pacific Fishery Management Council (NPFMC) voted unanimously to close off more than 150,000 square nautical miles of the Arctic sea to commercial fishing. The decision, welcomed by an array of environmentalists and industry groups, is a preventative measure to protect fisheries that have become more accessible as a result of declining sea ice in the Arctic. It is the first time that the federal government has closed a fishery due to climate change instead of over-fishing, says supporters of the ban.



Page 1 | Page 2 | Page 3 | Page 4 | Page 5 | Page 6 | Page 7 | Page 8 | Page 9 | Page 10

home | archives | news | XML / RSS feeds


XML / RSS / Syndication options

mongabay.com features more than 250 RSS feeds to meet your specific area of interest

All mongabay.com news
Only rainforest news
Only Brazil news
Only Biodiversity news
Only Climate Change news
Only Madagascar news

more XML feeds