Longitudinal Variation in the Ohio River Fish Community
Longitudinal Variation in the Ohio River Fish Community
复制标题
俄亥俄河鱼类群落的纵向变化
DOI：
10.1080/02755947.2013.785990
复制
发表时间：
2013
影响因子：
1.1
通讯作者：
D. Dixon
中科院分区：
文献类型：
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作者：
G. Seegert;Joe T. Vondruska;E. Perry;D. Dixon
摘要俄亥俄州河鱼类群落采样三次（6月，8月和10月），在2005年附近的17个发电厂，包括几乎整个长度的俄亥俄州河（河公里82- 1527）电捕鱼。在每个工厂的六个500米的区域进行了电捕鱼。使用广义加法模型，我们检查了这个数据集的306电捕鱼样本，以确定如何丰富的31个类群的长度变化的河流。我们还寻找了几个社区健康指标（捕捞率，物种丰富度，生物完整性指数和修正的幸福指数）的趋势。在31个类群的检查，但三个纵向差异的河流。根据31个分类群和5个群落措施的模式，我们将每个分类群或措施分配到七个类中的一个。最大的类包括10个类群，从上游到下游的丰度稳步下降。所有的社区措施遵循类似的模式，除了每一个措施增加附近的do...
Abstract The Ohio River fish community was sampled three times (June, August, and October) in 2005 by electrofishing near 17 power plants encompassing nearly the entire length of the Ohio River (river kilometer 82–1,527). Six 500-m zones were electrofished at each plant. Using a generalized additive model, we examined this data set of 306 electrofishing samples to determine how the abundance of 31 taxa varied over the length of the river. We also looked for trends in several measures of community health (catch rate, species richness, index of biotic integrity, and modified index of well-being). Of the 31 taxa examined, all but three showed longitudinal differences over the course of the river. Based on the patterns for the 31 taxa and 5 community measures, we assigned each taxon or measure to one of seven classes. The largest class included 10 taxa that declined steadily in abundance from upriver to downriver. All community measures followed a similar pattern except that each measure increased near the do...