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Title
Cascading impacts of anthropogenically driven habitat loss: deforestation, flooding, and possible lead poisoning in howler monkeys (Alouatta pigra)
Author(s)
Serio-Silva, J. C.;Olguin, E. J.;Garcia-Feria, L.;Tapia-Fierro, K.;Chapman, C. A.
Published
2015
Publisher
Primates
Published Version DOI
https://doi.org/10.1007/s10329-014-0445-z
Abstract
To construct informed conservation plans, researchers must go beyond understanding readily apparent threats such as habitat loss and bush-meat hunting. They must predict subtle and cascading effects of anthropogenic environmental modifications. This study considered a potential cascading effect of deforestation on the howler monkeys (Alouatta pigra) of Balancan, Mexico. Deforestation intensifies flooding. Thus, we predicted that increased flooding of the Usumacinta River, which creates large bodies of water that slowly evaporate, would produce increased lead content in the soils and plants, resulting in lead exposure in the howler monkeys. The average lead levels were 18.18 +/- 6.76 ppm in the soils and 5.85 +/- 4.37 ppm in the plants. However, the average lead content of the hair of 13 captured howler monkeys was 24.12 +/- 5.84 ppm. The lead levels in the animals were correlated with 2 of 15 blood traits (lactate dehydrogenase and total bilirubin) previously documented to be associated with exposure to lead. Our research illustrates the urgent need to set reference values indicating when adverse impacts of high environmental lead levels occur, whether anthropogenic or natural, and the need to evaluate possible cascading effects of deforestation on primates.
Keywords
Climate change;Lead exposure;Plumbism;Ecotoxicology;Conservation;public-health problem;environmental lead;blood lead;reference values;adult monkeys;exposure;level;conservation;toxicity;mexico;Zoology
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PUB15719