Influence of land use on metal concentrations in playa sediments and amphibians in the Southern High Plains

被引：22

作者：

Venne, Louise S.

Cobb, George P.

Coimbatore, Gopal

Smith, Loren M.

McMurry, Scott T.

机构：

[1] Texas Tech Univ, Dept Environm Toxicol, Inst Environm & Human Hlth, Lubbock, TX 79409 USA

[2] Texas Tech Univ, Wildlife & Fisheries Management Inst, Lubbock, TX 79409 USA

来源：

ENVIRONMENTAL POLLUTION | 2006年 / 144卷 / 01期

基金：

美国国家科学基金会;

关键词：

great plains toad; land use; metal; metamorph; spadefoot toad;

D O I：

10.1016/j.envpol.2006.01.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Southern High Plains (SHP) is a semi-arid region in which playa wetlands are the focal points of biodiversity. Playas are highly influenced by surrounding land use. Most of the SHP is in agricultural production (primarily cotton) with a history of arsenic-containing herbicide use. Metals influence reproduction and development in amphibians. We analyzed metal residues in playa sediment and whole body tissue of Spea spp. and Bufo cognatus metamorphs from two land uses: cropland and native grassland. Cd and Ni concentrations in B. cognatus tissues differed between land uses. Metal concentrations in Spea spp. tissues did not differ between land uses. Ba was higher in Spea spp. than B. cognatus collected from the same grassland playas, indicating differential habitat use. No correlations between sediment and tissue concentrations were found. Land use appeared to have little influence on metal concentrations and levels were below those known to cause effects in amphibians. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：112 / 118

页数：7

共 54 条

[1]

Anderson AM, 1999, WILDLIFE SOC B, V27, P759

[2]

[Anonymous], 2002, Agency for toxic substances and disease registry

[3]

[Anonymous], 1996, 3050B METH DIG SED S

[4] Biosensors of inorganic lead exposure and effect in an adult amphibian [J].