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Tag: "ecosystems" at biology news

Prey not hard-wired to fear predators

... conservationists and public agencies by restoring ecosystems to bring native carnivores back to where they once thrived.” said Dr. Berger. Berger’s study, which looked at 19 areas including the Russian Far East, Greenland, Canada, and the U.S., demonstrated that caribou, elk, and moose are all affected by ...

Scientists close in on missing carbon sink

... The scientists also found that intact tropical ecosystems are a more important carbon sink than previously t.... The models had generally indicated that tropical ecosystems were a net source of 1.8 billion tons of carbon, largely because trees and other plants release carb...

Antarctic icebergs -- Hotspots of ocean life

... preserve it as a unique snapshot of these iceberg ecosystems at this point in history.” Using SDSC-developed technologies, Helly collected the data using the SIOExplorer-in-a-Box digital library system ( http://SIOExplorer.ucsd.edu ) and then stored the information in collections at SDSC for access and ana...

Ecology in an era of globalization

...ation, production systems, and invasive species on ecosystems and people throughout North, Central, and South America. Scientists from throughout the Americas gathered last year in Merida Mexico and held a conference on this very topic. The following are highlights from the meeting, including more extensive wo...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...d other animals that inhabit islands because their ecosystems are much more sensitive than those on the mainland...says Buckley. ?00 million people depend on island ecosystems for their food and livelihoods.? The study suggests that islands are particularly sensitive to the...

Climate change impacts stream life

...sity study has found. Rivers and streams are key ecosystems for many aquatic species and form important links with surrounding habitats, yet little emphasis has been given so far to the ecological effects of climate change on these running-waters. Now a twenty-five year study at Llyn Brianne in central W...

Alien plants attack using 'resource conservation' as weapon, researchers say

...erious and least understood threats to the world's ecosystems is the problem of invasive species-exotic plants, ...n and native plants, the researchers studied three ecosystems in Hawaii-a forested area with limited light, volcanic soils with low nutrients and a desert. They c...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...tific and legal methods to protect these sensitive ecosystems and minimize the potential environmental impact of...disrupting the food chain and potentially damaging ecosystems that lie within other countries?economic zones or in international waters. This poses additional pro...

MIT's ocean model captures diversity of underwater forests

...n a way that is consistent with the way real-world ecosystems evolve according to the principles of natural sele... "The guiding principle of our model is that its ecosystems are allowed to self-organize as in the natural world," said Follows, a principal research scientist ...

Fish extinctions alter critical nutrients in water, study shows

...ore than half of all the recycled nutrients in the ecosystems studied, the computer simulations found. "The lo...ight play in replacing the lost nutrients. In both ecosystems studied, when surviving species successfully picked up the slack in nutrient recycling left by an ex...

Tundra disappearing at rapid rate

...e boundary, or treeline, between forest and tundra ecosystems is a prominent landscape feature in both Arctic and mountain environments. As global temperatures continue to increase, the treeline is expected to advance but the new research shows that this shift will not always occur gradually but can surge ahead...

Tropical forests -- Earth's air conditioner

...plains. "It just makes no sense to destroy natural ecosystems in the name of saving natural ecosystems."...

Tracking sperm whales and jumbo squid

... that jumbo squid and sperm whales play in oceanic ecosystems and fisheries, many aspects of their lifestyle—including feeding and hunting—are as mysterious today as they were when Melville made the following observation in Moby-Dick: "For though other species of whales find their food above water, and may be s...

Woman's Day and For Womens of Science

...e is known about the behavior of mercury in marine ecosystems and methylmercury in marine fish, the ingestion of...nomic analyses don't consider mercury's impacts on ecosystems and wildlife. The concentration of methylmercury in fish in freshwater and coastal ecosystems can ...

Mercury contamination of fish warrants worldwide public warning

...e is known about the behavior of mercury in marine ecosystems and methylmercury in marine fish, the ingestion of...nomic analyses don't consider mercury's impacts on ecosystems and wildlife. The concentration of methylmercury in fish in freshwater and coastal ecosystems can ...

Scientists uncover link between ocean's chemical processes and microscopic floating plants

...ter. "The consequences for marine organisms, their ecosystems and climate-relevant gases are unknown." During the study, concentrations of dimethyl sulfide (DMS) and chloroiodomethane, produced by phytoplankton in ocean water, were measured. "In the atmosphere, DMS is rapidly oxidized to sulfur dioxide, whi...

Massive coral death attributed to earthquake

...nagement that encourages sustainable uses of these ecosystems and the protection of critical habitats and species to help this process." ...

Fighting to keep Darwin in the classroom

...volution, we'll cover the gamut, from molecules to ecosystems and from 'intelligent design' to natural selection. We aim to make a big difference in evolutionary education." Amelia McNamara, Vice President, Publishing, Life Sciences and Biomedicine at Springer, said, "Springer stands behind evolutionary the...

ESA launches new project to protect biodiversity

...se of biodiversity's components will not only save ecosystems and species, but it may also save the foods and medicines of tomorrow. "The United Nations Convention on Biodiversity (UNCBD) agreed on a set of headline indicators to assess the progress made towards this target. DIVERSITY will make a contributio...

Scientists find method to pick noncompetitive animals, improve production

...ies. "This is important because the most stable ecosystems are those that have multiple species that cohabitate. Natural selection is nature's way of keeping the ecosystem in balance." Muir previously proved that animals living in groups and bred to be more passive sustain fewer injuries and are more prod...

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