ANALYSIS OF MACROINVERTEBRATE ASSEMBLAGES IN RELATION TO ENVIRONMENTAL GRADIENTS IN ROCKY MOUNTAIN STREAMS
ANALYSIS OF MACROINVERTEBRATE ASSEMBLAGES IN RELATION TO ENVIRONMENTAL GRADIENTS IN ROCKY MOUNTAIN STREAMS
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落基山溪流中大型无脊椎动物群落与环境梯度的关系分析
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
B. Hill
中科院分区：
文献类型：
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作者：
M. Griffith;P. Kaufmann;A. Herlihy;B. Hill
使用冗余分析（RDA）和典型对应分析（CCA），我们评估的化学和物理特性和大型无脊椎动物组合在流站点采样的区域环境监测和评估计划（R-EMAP）在南落基山脉生态区的矿物带在科罗拉多之间的关系。我们对比的分析结果，其中社区结构总结为社区指标和分析的基础上属的丰度。我们的目标是确定指标或分类群诊断的主要环境压力在这些流。当使用RDA分析社区指标数据时，三个轴是显著的，占96%的指标-环境关系。第一个RDA轴与溶解镉，沉积物锌，总悬浮固体，变量表明它与采矿影响。第二和第三RDA轴与水温、平均基质嵌入度、岸边平均郁闭度、平均植被覆盖度和平均植被覆盖度相关。
Using redundancy analysis (RDA) and canonical correspondence analysis (CCA), we assessed relationships among chemical and physical characteristics and macroinvertebrate assemblages at stream sites sampled by the Regional Environmental Monitoring and Assessment Program (R-EMAP) in the mineral belt of the Southern Rockies Ecoregion in Colorado. We contrasted results of analyses where community structure was summarized as community metrics and analyses based on genera abundances. Our objective was to identify metrics or taxa diagnostic of major environmental stressors in these streams. When RDA was used to analyze the community metrics data, three axes were significant, accounting for 96% of the metric–environment relation. The first RDA axis was correlated with dissolved cadmium, sediment zinc, and total suspended solids, variables that indicate it was related to mining effects. The second and third RDA axes were correlated with water temperature, mean substrate embeddedness, mean canopy density at the bank...