Spatially explicit analysis of metal transfer to biota: influence of soil contamination and landscape.
Spatially explicit analysis of metal transfer to biota: influence of soil contamination and landscape.
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DOI：
10.1371/journal.pone.0020682
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Scheifler R
中科院分区：
文献类型：
--
作者：
Fritsch C;Cœurdassier M;Giraudoux P;Raoul F;Douay F;Rieffel D;de Vaufleury A;Scheifler R
生态毒理学的一个新领域，被称为“景观生态毒理学”的概念和发展，在20世纪90年代被提出，然而，到目前为止，很少有研究已经在这个新兴的领域。事实上，人们对发展这一领域有着浓厚的兴趣，既为了更新生态毒理学中使用的概念和工具，也为了应对风险评估等实际问题。本研究的目的是调查的空间异质性的金属生物富集在动物中，以确定空间显着的因素，如景观以及土壤中的总金属浓度和可提取的金属浓度的作用。在冶炼厂影响的地区，我们研究了积累的微量金属（TM：镉，铅和锌）在无脊椎动物（格罗夫蜗牛Cepaea SP和玻璃蜗牛Oxychilus draparnaudi）和脊椎动物（银行田鼠Glareolus和大白牙鼩 Crocidura russula）。总的和CaCl 2提取浓度的TM测量土壤中的木本补丁，动物被捕获。TM浓度在动物中表现出高度的空间异质性。他们增加了土壤污染和更好地解释总的，而不是CaCl 2-可提取的TM浓度，除了在Cepaea SP。TM水平的动物和他们的变化沿着污染梯度调制的景观，这种影响是物种和金属的具体。中值土壤金属浓度（通用克里格预测）计算缓冲区的大小不断增加，并与生物累积。动物和土壤中TM浓度显示出最强相关性的空间尺度在金属、物种和景观之间存在差异。景观影响的潜在机制（社区功能、行为等）讨论了目前的研究结果强调，需要进一步发展景观生态毒理学和多尺度的方法，这将提高我们对污染物转移和生态系统的影响的理解。
Concepts and developments for a new field in ecotoxicology, referred to as “landscape ecotoxicology,” were proposed in the 1990s; however, to date, few studies have been developed in this emergent field. In fact, there is a strong interest in developing this area, both for renewing the concepts and tools used in ecotoxicology as well as for responding to practical issues, such as risk assessment. The aim of this study was to investigate the spatial heterogeneity of metal bioaccumulation in animals in order to identify the role of spatially explicit factors, such as landscape as well as total and extractable metal concentrations in soils. Over a smelter-impacted area, we studied the accumulation of trace metals (TMs: Cd, Pb and Zn) in invertebrates (the grove snail Cepaea sp and the glass snail Oxychilus draparnaudi) and vertebrates (the bank vole Myodes glareolus and the greater white-toothed shrew Crocidura russula). Total and CaCl2-extractable concentrations of TMs were measured in soils from woody patches where the animals were captured. TM concentrations in animals exhibited a high spatial heterogeneity. They increased with soil pollution and were better explained by total rather than CaCl2-extractable TM concentrations, except in Cepaea sp. TM levels in animals and their variations along the pollution gradient were modulated by the landscape, and this influence was species and metal specific. Median soil metal concentrations (predicted by universal kriging) were calculated in buffers of increasing size and were related to bioaccumulation. The spatial scale at which TM concentrations in animals and soils showed the strongest correlations varied between metals, species and landscapes. The potential underlying mechanisms of landscape influence (community functioning, behaviour, etc.) are discussed. Present results highlight the need for the further development of landscape ecotoxicology and multi-scale approaches, which would enhance our understanding of pollutant transfer and effects in ecosystems.
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影响因子：
5.2
作者：
de la Peña, NM;Butet, A;Burel, F
通讯作者：
Burel, F
影响因子：
9.1
作者：
Burel, F;Butet, A;de la Peña, NM
通讯作者：
de la Peña, NM
影响因子：
3
作者：
BERGER, B;DALLINGER, R
通讯作者：
DALLINGER, R
影响因子：
2.9
作者：
Douay, Francis;Pruvot, Christelle;Waterlot, Christophe
通讯作者：
Waterlot, Christophe
影响因子：
5
作者：
Cairns, J;Niederlehner, BR
通讯作者：
Niederlehner, BR