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Tag: "zones" at biology news

Ongoing collapse of coral reef shark populations

...egulated through an extensive series of management zones in which different areas are open to different levels of fishing. In their study, the researchers determined the status of two species of reef shark—the whitetip and grey reef sharks—by employing a unique combination of fisheries-independent abundanc...

Researchers to study why dead zone returned to Lake Erie

... grant will fund a 5-year study examining why dead zones have returned to Lake Erie, and researchers hope the findings will allow them to detect the cause and stop the spread before the fishery and tourism industries suffer. "This is a very serious problem," said University of Michigan's Donald Scavia, p...

Long-lived deep-sea fishes imperiled by technology, overfishing

... Niño, the Pacific Decadal Oscillation and hypoxia zones all can influence shallow-water fishes' breeding and mortality rates, but deep-sea environments are usually stable. The deep sea is almost completely dark, very near freezing and has very little food ?reasons for the fishes' slow growth and low produ...

Gene that makes people 'early to bed and early to rise' demystified

...fly to Europe, we set our watch ahead several time zones and our watch is back on track," Ptácek added. "We don't understand the [internal] human clock well enough to advance or delay it that way. But with all that we've learned from the fruit fly, mouse and now human about the gears and how they are worki...

Are we killing the world's oceans?

...e destroying the world's coral reefs? Why are dead zones in the oceans on the rise? Can aquaculture be environmentally sustainable? And how are we all to blame for the collapse of coastal fisheries? Most importantly, what can governments, industry and individuals do about it? Members of the news media ...

New sucker-footed bat discovered in Madagascar

...-leaf Ravenala that are often pioneering plants in zones where the original forests have been cleared and burned. "For now, we do not have to worry as much about the future of Myzopoda," said Steven M. Goodman, Field Museum field biologist and lead author of the study. "We can put conservation effort...

How trees manage water in arid environments

...inually available from rain or snow, the tree root zones don't freeze, and there is enough sunlight for photosynthesis. The trees slow down during the pre-monsoon dry season in May and June when water is scarce, and then quickly respond to the sudden availability of water at the onset of the monsoon in Jul...

Tracking sperm whales and jumbo squid

...spermaceti whale obtains his whole food in unknown zones below the surface; and only by inference is it that any one can tell of what, precisely, that food consists." The sperm whale remains a challenging research subject for scientists today, Davis noted. "Adult sperm whales can stay underwater for mor...

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

...cosystems that lie within other countries?economic zones or in international waters. This poses additional problems, because while a state has the right to exploit its own resources, international environmental law decrees that it cannot damage the environment beyond its boundaries. While studies of pro...

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