Posts Tagged ‘Habitat Loss’

Madagascar: A Biodiversity “Hot Spot” for Amphibians

Thursday, July 30th, 2009

map high-lighting the island of Madagascar

Ecologists and biologist who study the world’s flora and fauna have been reporting a species decline amongst amphibians for over a decade or more. This decline has been attributed to a combination of habitat loss and diseases (a fungus pandemic, a virus). A 2007 paper (Becker, et al) made a case for “habitat splitting” wherein certain Brazilian, Amazon frog species that are born in water, but then occupy land ecosystems as adults, are “cut off” from making this transition, due to human road building and development.

And yet, despite this trend, there remain biological (or biodiversity) “hot spots” around the globe in which a great many amphibian species are found to be thriving in the same ecosystem. In some cases, such hot spots offer potentially hundreds of new species for discovery and analysis. One such hot spot is the island of Madagascar. It is an “Eden” for amphibians.

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Invasive Species, Habitat Loss Threaten to Extinguish Life in Oceania

Wednesday, July 29th, 2009

It is estimated that man has been in Oceania for up to 125,000 years. The land was there before man. And for a long time a balance has been found between man and nature. Perhaps that balance was achieved because man and nature were not separate entities, but one and the same. However, in the recent past, that balance has been disturbed by population and consumption. Man became an invader rather than an aboriginal. And with that, habit loss for other species has been a concern. And now life isn’t what it used to be in Oceania.

It is such an invasion, not just by humans, but species of both flora and fauna that threatens aboriginal life in Oceania. A new study, which was published in the international journal Conservation Biology expresses the need for governments to act quickly in order to halt the loss of biodiversity and the extinction of species.

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Only 121 Breeding Tigers Left in Nepal, First Nationwide Assessment Finds

Tuesday, July 28th, 2009
bengal tiger photo photo: Paul Mannix via flickr It's well known that global tiger populations are in serious decline, with habitat loss and poaching driving the big cats quickly towards extinction. In fact, recently in India another reserve was found to actually have no tigers in it. Now, Nepal has completed its first nationwide assessment of tigers and the results are decidedly mixed. He...

Hope for Hudson River Fish

Wednesday, June 25th, 2008

Last month I wrote about a recent study documenting declining fish populations in the Hudson River, especially American shad. I'm happy to report Gov. Paterson already has earmarked funding to seek ways of remedying conditions likely contributing to the shad's decline, including over-fishing, habitat loss and increased populations of predatory species. The state Department of Environmental Conservation will head up this initiative.

American shad
American Shad / NOAA via Wikimedia Commons

The most important action the Department can take is to establish regulations requiring Hudson River power plants to replace obsolete "once through" cooling technology with commercially viable systems that reduce water withdrawal by more than 90 percent. For more than 30 years, Scenic Hudson, Riverkeeper and the Natural Resources Defense Council have waged a David vs. Goliath battle with the power companies to persuade them to install "closed cycle" cooling systems that recycle river water, rather than continuously flushing their plants with new water. ...