New PDF release: American PHOTO - September October 2010

By American Photo Magazine

American picture September October 2010 - Shoot to delight; a glance throughout the lens of the world's top activities photographers and more...

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Extra resources for American PHOTO - September October 2010

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Some of the species threatened by overfishing besides Atlantic cod are: swordfish, black sea bass, red snappers, and some sharks. The populations are threatened by loss of habitat, pollution, and fishing practices that are not sustainable—that is, they allow fishers to take so many fish that the remaining population is unable to reproduce fast enough to make up for the ones taken. Though the prospects for many of the endangered fish have seemed bleak, there is at least one case in which government–enforced fishing restrictions have successfully corrected the problem.

They have no filters, like human lungs, to protect them from pollution and disease. In the mid1990s, an alarming number of malformed frogs began to appear—frogs with missing limbs, extra limbs, or oddly shaped limbs. A few years later studies showed that frogs exposed to very tiny amounts of the pesticide Atrazine were experiencing severe sexual abnormalities. Other studies suggest that air pollution and global warming may be contributing to the decline in the frog population. Scientists are particularly interested in frogs’ plight, believing that if the world is too contaminated (full of poisons and harsh chemicals) to sustain the lives of frogs, it is probably not a healthy place for human beings either.

This toad does not adapt well to dry and warm conditions, so these droughts severely reduced its population. Since then, the number of Houston toads has been further reduced as pine forests have been cleared to create farms and communities. The runoff of pesticides and herbicides used on farms and in residential areas also threatens to destroy what remains of the toad’s habitat. Conservation efforts for the Houston toad include protecting its remaining habitat and reintroducing it into areas in its former range.

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American PHOTO - September October 2010 by American Photo Magazine


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