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Plos One : Pesticide Acute Toxicity is a Better Correlate of U.S. Grassland Bird Declines Than Agricultural Intensification, Volume 8

By Clarke, Rohan H.

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Book Id: WPLBN0003964585
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : Pesticide Acute Toxicity is a Better Correlate of U.S. Grassland Bird Declines Than Agricultural Intensification, Volume 8  
Author: Clarke, Rohan H.
Volume: Volume 8
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection
Historic
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Publisher: Plos

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Clarke, R. H. (n.d.). Plos One : Pesticide Acute Toxicity is a Better Correlate of U.S. Grassland Bird Declines Than Agricultural Intensification, Volume 8. Retrieved from http://netlibrary.net/


Description
Description : Common agricultural birds are in decline, both in Europe and in North America. Evidence from Europe suggests that agricultural intensification and, for some species, the indirect effects of pesticides mediated through a loss of insect food resource is in part responsible. On a state-by-state basis for the conterminous Unites States (U.S.), we looked at several agronomic variables to predict the number of grassland species increasing or declining according to breeding bird surveys conducted between 1980 and 2003. Best predictors of species declines were the lethal risk from insecticide use modeled from pesticide impact studies, followed by the loss of cropped pasture. Loss of permanent pasture or simple measures of agricultural intensification such as the proportion of land under crop or the proportion of farmland treated with herbicides did not explain bird declines as well. Because the proportion of farmland treated with insecticides, and more particularly the lethal risk to birds from the use of current insecticides feature so prominently in the best models, this suggests that, in the U.S. at least, pesticide toxicity to birds should be considered as an important factor in grassland bird declines.

 

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