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News articles on ecology

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

Rats decimating Aleutian Islands' ecology

(02/25/2008) Rats are disrupting fragile ecosystems on the Aleutian Islands Archipelago, reports a new study published in the Proceedings of the National Academy of Sciences.


Deep-sea krill discovered in Antarctica

(02/25/2008) Antarctic krill have been found living at depths up to 3000 meters near the Antarctic Peninsula, a finding that changes scientists' understanding of a fundamental part of the ocean food chain. Previously researchers believed that krill lived only in the upper ocean.


Restoring soil carbon can reverse global warming, desertification and biodiversity loss

(02/21/2008) Restoring the ability of soil to store carbon by promoting native grasses and vegetation can help reverse global warming, desertification and biodiversity loss, says an Australian researcher.


How will global warming affect marine food chains?

(02/17/2008) Rising temperatures and acidity of the world's oceans due to human emissions of carbon dioxide is putting marine food webs at risk warned a researcher speaking at a press briefing at the annual meeting of the American Association for the Advancement of Science in Boston.


Warming could bring sharks to Antarctica with devastating ecological consequences

(02/15/2008) Global warming could make the waters around Antarctica hospitable to sharks for the first time in 40 million years. Their return could have devastating ecological consequences report researchers from the University of Rhode Island.


Jack rabbits vanish from Yellowstone, ecologists puzzled

(02/14/2008) Scientists are puzzled over the apparent disappearance of jack rabbits from Grand Teton and Yellowstone National Parks, but say the local extinction may be having region-wide impacts on a variety of other prey species and their predators, according to a new study by the Bronx Zoo-based Wildlife conservation Society.


Global warming to increase insect attacks on plants

(02/11/2008) Global warming will increase attacks on plant leaves by insects, reports a study published in Proceedings of the National Academy of Sciences.


Global warming puts penguins at risk of extinction

(02/11/2008) Climate change could put the long-term survival of sub-Antarctic King Penguins at risk by reducing the availability of prey, reports a new study published in Proceedings of the National Academy of Sciences.


Overfishing may hurt Amazon forest trees

(02/05/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.


U.S. biofuels policy drives deforestation in Indonesia, the Amazon

(01/17/2008) U.S. incentives for biofuel production are promoting deforestation in southeast Asia and the Amazon by driving up crop prices and displacing energy feedstock production, say researchers.


Climate change causes shift in American bird ranges

(01/16/2008) Breeding ranges of North American birds have shifted northward coinciding with a period of increasing global temperatures, report researchers writing in the April issue of conservation Biology.


Cellulosic ethanol production could fight Gulf Dead Zone, help fisheries

(01/16/2008) Feedstocks for cellulosic ethanol production could help fight the massive "dead zone" that forms each year in the Gulf of Mexico as a result of current farming practices, says a University of Alabama in Huntsville biologist.


Global warming will diminish fish catch in the Bering sea

(01/16/2008) One half of the fish caught in the U.S. annually--and almost a third worldwide--come from the Bering Sea. Yet, this vast resource is increasingly threatened by climate change. A recent study, published in Marine Ecology Progress Series, showed that global warming will greatly affect the Bering Sea's phytoplankton, the cornerstone of the sea's rich ecosystem.


Disappearance of elephants, giraffes causes ecological chain reaction

(01/10/2008) The disappearance of elephants, giraffes and other grazing animals from the eastern African savanna could send ecological ripple effects all the way to the savanna's ants and the acacia trees they inhabit, warns a new study published in the journal Science.


Beetle droppings help forests recover from fire

(12/04/2007) Armed with a pair of tweezers and a handful of beetle droppings, University of Alberta forestry graduate Tyler Cobb has discovered why the bug-sized dung is so important to areas ravaged by fire.


Earthquake triggers decline in a frog species

(12/03/2007) In 1999 a 7.3 earthquake struck Nantou County at the center of quake-prone Taiwan. The earthquake caused considerable damage: over 2,000 people died and just under 45,000 houses were destroyed. It was Taiwan's strongest quake in a hundred years. The quake also devastated a subpopulation of riparian frogs, Rana swinhoana, which had been under scientific study for three years prior. This devastation allowed scientists the opportunity to study the population changes in a species affected suddenly and irretrievably by natural disaster.


Large-scale agriculture 'compromises' forest's ability to recover

(11/19/2007) As deforestation of tropical forests continues unhindered, one of the future hopes for these damaged ecosystems is regeneration in secondary forests. Some areas that were once slash-and-burned for cattle ranching or subsistence agriculture have been abandoned, allowing scientists to study the possibility of recovery in the rainforest. If anyone has a clear idea of the potential of secondary forests it is Robin L. Chazdon. Dr. Chazdon, a full professor of Ecology and Evolutionary Biology at the University of Connecticut, has been studying the regeneration of secondary forest for over twenty-five years. She has published over 50 papers on tropical ecology, currently she serves as an active member of the Biotropica editorial board and is a member of the Bosques Project, which measures secondary forest recovery in Northern Costa Rica.


Law enforcement key to saving Borneo's rainforests

(11/13/2007) In an interview with mongabay.com, Dr. Rhett Harrison, a Smithsonian Tropical Research Institute (STRI) associate researcher and Secretary for the Asia-Pacific Chapter of ATBC, says that law enforcement could be the key to safeguarding biodiversity contained in Borneo's lowland parks. Harrison says there may be opportunities for conservationists to work with oil palm to developers to ensure that existing forests are not converted for plantations and that palm oil can be produced in a sustainable manner. He also adds that carbon offsets may eventually offer a means to fund conservation and sustainable development efforts in areas that still have standing forest.


Global warming is killing trees in California parks

(09/12/2007) A new study ties a 22 percent increase in mortality among trees in the California Sierra Nevadas to a temperature-driven increase in drought.


Brazil's threatened Atlantic forest may be more resilient than thought

(09/06/2007) The Atlantic forest of Brazil, one of the world's most threatened biodiversity hotspots, may have served as a critical refuge for biodiversity during the ice ages. The findings suggest that despite being reduced to just 8 percent of its original extent due to agriculture and urban expansion, the Atlantic forest may be capable of recovery. In other words, the Atlantic forest may be more resilient to change than previously believed.


Tree resprouting offers hope in former pastures of Brazil's cerrado

(09/06/2007) Deforested landscapes in the Brazilian cerrado show hopeful signs of recovery even after long periods of intensive use, reports a study published in the journal Biotropica. Analyzing the natural reestablishment of native trees in former pastureland located in the dry woodlands of the Brazilian cerrado, a team of researchers found that while species richness was lower in older pasture, density and composition of regenerating trees did not change with pasture age.


Climate change claims a snail

(08/12/2007) The Aldabra banded snail (Rachistia aldabrae), a rare and poorly known species found only on Aldabra atoll in the Indian Ocean, has apparently gone extinct due to declining rainfall in its niche habitat. While some may question lamenting the loss of a lowly algae-feeding gastropod on some unheard of chain of tropical islands, its unheralded passing is nevertheless important for the simple reason that Rachistia aldabrae may be a pioneer. As climate change increasingly brings local and regional shifts in precipitation and temperature, other species are expected to follow in its path.


Global warming to stunt growth of rainforest trees

(08/12/2007) Global warming could reduce the growth rates of rainforest trees by 50 percent, reported research presented last week at the annual meeting of the Ecological Society of America in San Jose, California by Ken Feeley of Harvard University's Arnold Arboretum in Boston.


Lowland rainforest less diverse than previously thought

(08/09/2007) While rainforests are the world's libraries of biodiversity, species richness may be more evenly distributed in some forests than in others, reports an extensive new study by an international team of entomologists and botanists. The work, published in the current issue of the journal Nature, has important implications for forest management and conservation strategies.


Nectar feeding bats are powered by pure sugar

(08/06/2007) Nectar-feeding bats are particularly vulnerable to environmental change due to their high-energy dietary requirements, reports a new study published in the British Ecological Society's journal Functional Ecology.


Fish cultivate gardens of algae

(07/24/2007) Damselfish cultivate "gardens" of algae, according to a study published last October in the journal Biology Letters.


Antioxidant use helped some birds after Chernobyl nuclear accident

(07/11/2007) Brightly colored birds were more adversely affected by high levels of radiation around the Chernobyl nuclear plant, reports a study published online in the British Ecological Society's Journal of Applied Ecology.


conservation biology needs to be accessible to the masses

(05/31/2007) Since its earliest days, when private collectors amassed great stores of specimens collected from the farthest reaches of the Earth, natural history studies often have been a pursuit of the economically well-off and of intellectually elitist scientists. One of the most important spinoffs of these natural history studies has been conservation Biology. Unfortunately, the culture of exclusivity appears to have also infected conservation Biology. Technical jargon, restricted access to data, and poor communication among researchers, amateur enthusiasts and political decision-makers have colluded to keep it a clubby affair that may be hurting goals of sustainable use of resources, long term management policies, and species and habitat conservation.


Sex differences fuel evolution

(05/10/2007) Some Caribbean lizards' strong sexual dimorphism allows them to colonize much larger niches and habitats than they might otherwise occupy, allowing males and females to avoid competing with each other for resources and setting the stage for the population as a whole to thrive. The finding, reported this week in the journal Nature, suggests sex differences may have fueled the evolutionary flourishing of the Earth's wildly diverse fauna in a way not previously appreciated by scientists.


Tropical plants may be more adaptable to climate change

(05/07/2007) Tropical plants may be more adaptable to environmental change by extracting nitrogen from a variety of sources, reports a study published in the May 7 early online edition of The Proceedings of the National Academy of Sciences.


Coral reef fish return home after drifting the seas

(05/03/2007) Most coral reef fish larvae return to their 'home' reefs after spending weeks to months maturing in the open ocean, reports a new study published in the journal Science. The findings improve the understanding of coral reef ecosystems and have implications for marine conservation efforts.


Climate change could dramatically change forests in Central America

(05/02/2007) Drought could cause dramatic shifts in rainforest plant communities in Central America, reports a new study published in the May 3 issue of Nature. The research shows that many rainforest plants are ill-equipped to deal with extended dry periods, putting them at elevated risk from changes in climate projected for the region.


Animals on islands more abundant than mainland

(04/30/2007) A comprehensive survey of lizards on islands around the world has confirmed what island biologists and seafaring explorers have long observed: Animals on islands are much more abundant than their counterparts on the mainland.


Deep sea fish growing slower due to global warming

(04/23/2007) Changes in ocean temperature have altered the growth rates of commercially harvested fish over the past century, according to a new study published in this week's early online edition of the Proceedings of the National Academy of Sciences (PNAS).


Higher temperatures slow tropical tree growth

(04/23/2007) Climate change may be reducing growth rates of tropical rainforest trees, a development that could have widespread impacts for biodiversity, forest productivity, and even climate change itself, according to new research published in Ecology Letters.


Neon green gecko key to preventing Mauritian plant extinction

(04/17/2007) A vibrantly colored gecko plays a key role in a highly threatened ecological community in Mauritius reports new research published in American Naturalist. Studying plant-animal interactions in Mauritius, an Indian Ocean island famous for its extinct dodo bird, researchers found that a rare plant, Trochetia blackburniana, benefits from its proximity to Pandanus plants because they house high densities of geckos responsible for pollination. The findings, which unusually identify a lizard as a key pollinator, are significant because they provide "valuable management insights for ongoing conservation efforts to save the highly endangered flora of Mauritius.


Cane toads to invade 2 million square kilometers of Australia

(04/03/2007) Cane toads are dramatically expanding their range in Australia and may eventually double their current extent to occupy over 2 million square kilometers, according to new projections by a team of scientists writing in Proceedings of The Royal Society B: Biological Sciences. The researchers report that the invasive amphibians increasingly occupying zones outside their native conditions, putting native Australian species at ever greater risk.


Overfishing of sharks causing shellfish decline

(03/29/2007) Overfishing of large sharks is reducing the abundance of shellfish reports a study published in the March 30 issue of the journal Science. A team of Canadian and American biologists has found that population declines in large predatory shark species -- including bull, great white, dusky, and hammerhead sharks -- due to overfishing has led to a boom in their ray, skate, and small shark prey species along the Atlantic Coast of the United States. Now these smaller species are depleting commercially important shellfish.


Logging reduces abundance of rare mammals in Borneo

(03/27/2007) Selective logging profoundly reduces the abundance of rare forest species according to surveys of logged and unlogged rainforests on the island of Borneo, one of the most biodiverse parts of southeast Asia. The results, published in a trio of papers, have implications for biodiversity and forest conservation efforts in one of the world's most threatened ecosystems.


Controversial rainforest clearing approved in Uganda

(03/26/2007) Uganda's prime minister Apolo Nsibambi has approved a plan to clear thousands of hectares of protected rainforest for a sugarcane plantation, reported the New Vision newspaper, a government-owned publication.


Salamanders dying due to common pesticide

(03/25/2007) Atrazine, one of the most widely used pesticides in the United States, may be killing salamanders, according to American biologists writing in the journal Environmental Health Perspectives.


Too many nutrients reduce biodiversity

(03/25/2007) researchers. The research is consistent with findings in other parts of the world that suggest high nutrient abundance can increase the productivity of a few species, but limited overall species richness.


Fish extinctions alter critical nutrients in water, study shows

(03/03/2007) Ecosystems are such intricate webs of connections that few studies have been able to explore exactly what happens when a species dies out. Now, a Cornell study using computer simulations has teased out how the disappearance of a freshwater fish can affect the availability of certain nutrients that other species rely on.


Antarctic Peninsula warming affects penguins, krill

(02/15/2007) While much of Antarctica has cooled over the past decade, a warming trend in the Antarctic Peninsula may indicate what the future holds for the rest of the icy continent's wildlife. Researchers at Ohio State University say that higher temperatures have already forced penguin populations to migrate south and may have reduced the availability of krill that serve as the based of the Antarctic food chain.


Amazon deforestation damaging critical ecosystem services

(02/08/2007) Human disturbance of the Amazon rainforest is more extensive than previously thought say a team of scientists writing in the current edition of the journal Frontiers in Ecology. Reviewing recent research on the Amazon ecosystem, they note that human activities are affecting the health of the forest and impacting the ecological goods and services the Amazon provides mankind.


Just how bad is the biodiversity extinction crisis?

(02/06/2007) In recent years, scientists have warned of a looming biodiversity extinction crisis, one that will rival or exceed the five historic mass extinctions that occurred millions of years ago. Unlike these past extinctions, which were variously the result of catastrophic climate change, extraterrestrial collisions, atmospheric poisoning, and hyperactive volcanism, the current extinction event is one of our own making, fueled mainly by habitat destruction and, to a lesser extent, over-exploitation of certain species. While few scientists doubt species extinction is occurring, the degree to which it will occur in the future has long been subject of debate in conservation literature. Looking solely at species loss resulting from tropical deforestation, some researchers have forecast extinction rates as high as 75 percent. Now a new paper, published in Biotropica, argues that the most dire of these projections may be overstated. Using models that show lower rates of forest loss based on slowing population growth and other factors, Joseph Wright from the Smithsonian Tropical Research Institute in Panama and Helene Muller-Landau from the University of Minnesota say that species loss may be more moderate than the commonly cited figures. While some scientists have criticized their work as "overly optimistic," prominent biologists say that their research has ignited an important discussion and raises fundamental questions about future conservation priorities and research efforts. This could ultimately result in more effective strategies for conserving biological diversity, they say.


Pesticides threaten cloud forests in Costa Rica - new study

(01/22/2007) Pesticides from coffee and banana cultivation are accumulating in Costa Rica's biodiverse cloud forests according to research published earlier this month in Environmental Science & Technology. The findings have implications for conservation efforts in both the Central American country and in other parts of the world.


Lavender and symbiotic fungi key to Cypress reforestation in Morocco

(01/20/2007) Cypress reforestation efforts are unsuccessful without dual cultivation with lavender or mycorrhizal fungi, according to researchers studying replanting programs in Morocco.


Leaf study could produce better global warming models

(01/18/2007) A new study on rotting leaves could produce more accurate climate models say researchers writing in the January 19 issue of the journal Science.


Are Brazil nuts really sustainable?

(12/20/2006) A lot of rainforest conservation initiatives embrace sustainably harvested non-timber forest products (NTFPs) like seeds and nuts as a means to provide income to locals without harming the forest. Operating on the premise that such products are eco-friendly, hundreds of outfits ranging from Whole Foods to the Body Shop to Ben & Jerry's Homemade Ice Cream tout their use of sustainably harvested Brazil nuts and related products. But really, how sustainable are these products?



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