A calcium‐based invasion risk assessment for zebra and quagga mussels (Dreissena spp)
A calcium‐based invasion risk assessment for zebra and quagga mussels (Dreissena spp)
复制标题
基于钙的斑马和斑驴贻贝 (Dreissena spp) 入侵风险评估
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Suzanne M. Pierson
中科院分区：
文献类型：
--
作者：
T. R. Whittier;P. Ringold;A. Herlihy;Suzanne M. Pierson
我们使用了钙浓度数据从3000多个溪流和河流的网站在美国接壤的分类生态区相对于他们的风险Dreissena物种入侵。我们将基于钙浓度的风险定义为：非常低（28 mg L-1）。分别占陆地面积9.4%和11.3%的生态区被列为极低风险和低风险。这些地区包括新英格兰、东南部大部分地区和太平洋西北部的西部。高风险生态区占土地面积的58.9%。钙浓度变化很大的生态区占陆地面积的19.8%，没有一个被归类为中度风险。大多数Dreissena事件（不包括五大湖）位于高风险生态区，大多数例外发生在高度可变的生态区。在低风险生态区，贻贝发生在从高钙地区流出的大河中。我们的地图为allo提供了指导。
We used calcium concentration data from over 3000 stream and river sites across the contiguous United States to classify ecoregions relative to their risk for Dreissena species invasion. We defined risk based on calcium concentrations as: very low ( 28 mg L−1). Ecoregions comprising 9.4% and 11.3% of land area were classified as very low risk and low risk, respectively. These areas included New England, most of the southeast, and western portions of the Pacific Northwest. High-risk ecoregions comprised 58.9% of land area. Ecoregions with highly variable calcium concentrations comprised 19.8% of land area; none could be classified as moderate risk. The majority of Dreissena occurrences (excluding the Great Lakes) were located in high-risk ecoregions, and most exceptions occurred in highly variable ecoregions. In low-risk ecoregions, mussels occurred in large rivers flowing from high-calcium regions. Our map provides guidance for the allo...