ecosystems 2 2

Tag: "ecosystems" at biology news

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...vers fear. It will make drastic changes in fragile ecosystems throughout the world, especially in the Antarctic....of the world. "We're already seeing the marine ecosystems respond dramatically to increases in temperatures along the Antarctic Peninsula," explained Berry Ly...

Gene chips forecast ecological impacts of climate change

... the ocean in carbon dioxide sequestration, marine ecosystems will experience temperature changes combined with changes in ocean pH –?ocean acidification. As a consequence of the elevated levels of the greenhouse gas, carbon dioxide, the predictions for ocean acidification are more problematic than tempera...

Prehistoric mystery organism verified as giant fungus

...e," Hotton said. The relatively simple Devonian ecosystems certainly seemed to contain nothing to prevent them from growing slowly for a long time. Plant-eating animals had not yet evolved, Boyce said. But even if Prototaxites hadn’t been eaten by the dinosaurs and elephants that came much later, they probab...

Dinosaur extinction didn't cause the rise of present-day mammals, claim researchers

...d were prevented from diversifying and evolving in ecosystems dominated by dinosaurs. The tree of life shows that after the MEE, certain mammals did experience a rapid period of diversification and evolution. However, most of these groups have since either died out completely, such as Andrewsarchus (an aggr...

MIT's ocean model precisely mimics microbes' life cycles

...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 ...

Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply

...that the loss of sharks is cascading through ocean ecosystems and inflicting collateral damage on food fisheries such as scallops," says Ellen Pikitch, a professor at the University of Miami Rosenstiel School of Marine and Atmospheric Science and executive director of the Pew Institute for Ocean Science. "Thes...

Microbes compete with animals for food by making it stink

...be an important and common interaction within many ecosystems -- and one that scientists often overlook, according to the authors of a paper published this week in the journal Ecology. "There is the notion that these spoiled resources are not that important," said Mark Hay, a Georgia Institute of Technology p...

By 2048 all current fish, seafood species projected to collapse

...ciety. "Species have been disappearing from ocean ecosystems and this trend has recently been accelerating," sa...d global fisheries catch data from 64 large marine ecosystems to test for the effects of large-scale species loss on fisheries-related services. They used the fis...

Seagrass ecosystems at a 'global crisis'

... scientific understanding of the value of seagrass ecosystems into public awareness, and thus effective seagrass...ne of the many keys to maintaining healthy coastal ecosystems and their biodiversity." Seagrasses ?a unique group of flowering plants that have adapted to exis...

NASA satellite data helps assess the health of Florida's coral reef

... that the impact of climate and man on these vital ecosystems can be minimized. ...

Genome info from 'plant destroyers' could save trees, beans and chocolate

...e that has devastated the nursery industry and oak ecosystems in California, Oregon and Washington.More than 1 million native oak and tanoak trees have been lost to the disease. In addition to soybean and oak, Phytophthora species cause disease in avocado, coconut, papaya, pineapple, potato, strawberry and wat...

Ocean sampling yields environmental sources of coral symbionts

...ioses is known. For both our understanding of reef ecosystems and their conservation, it is critical to recognize where these symbionts reside in the ocean environment. In the new work, the researchers succeeded in identifying Symbiodinium in the water column as well as on ocean-bottom substrates. Most impo...

Life in the extreme

... few hundred meters high supporting characteristic ecosystems with particular faunal communities, living directly or indirectly on methane, some of which appear to represent completely new species to science. ...

First Biodiversity Census of coral reef ecosystems in the NW Hawaiian Islands

...information and foster understanding of coral reef ecosystems globally. The cruise will take place on the NOAA ship Oscar Elton Sette and depart from Honolulu's Snug Harbor on Friday, October 6th. According to NOAA's Dr. Russell Brainard, chief scientist for the expedition, this pioneering effort is unprecede...

Squid-inspired design could mean better handling of underwater vehicles

... vehicles enable scientific researchers to explore ecosystems around the globe, from undersea volcanoes near Hawaii to the frigid depths beneath pack ice in the North and South poles. However, while the torpedo shape of some underwater vehicles ensures rapid deployment and high cruising speeds with minimal ene...

Extraordinary life found around deep-sea gas seeps

...loring cold water seeps and other 'chemosynthetic' ecosystems around New Zealand's east coast onboard NIWA's deepwater research vessel Tangaroa. Cold seeps are areas of the seafloor where methane gas or hydrogen sulphide escapes from large stores deep below. Like hydrothermal vents, cold seeps support unique...

Otherworldly bacteria discovered two miles down

...ly produced sulfur and hydrogen and one of the few ecosystems found on Earth that does not depend on energy from the Sun in any way. The discovery, appearing in the October 20 issue of Science, raises the possibility that similar bacteria could live beneath the surface of other worlds, such as Mars or Jupiter's...

Cougar predation key to ecosystem health

...onsider the importance of predatory species in how ecosystems function. The findings are consisten...ost side by side, have a similar climate and their ecosystems should be quite similar," Ripple said. "But instead they are very different, and we hypothesize that...

Gut reaction: Researchers define the colon's genome

...x community in one fell swoop, examining how whole ecosystems of genomes respond to environmental perturbations--and, in the case of humans, how microbial ecosystems contribute to health and disease. "This study is an important first step toward identifying microb...

African wetland managers armed with new technology

...water makes wetlands the most biologically diverse ecosystems on Earth, more productive even than tropical rainforests. Unlike rainforests, they are scattered across the world, providing regional flood and erosion prevention, water purification and nutrient recycling. For much of the 20th Century, wetlands we...

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