Influences of habitat and land cover on fish distributions along a tributary to Lake Ontario, New York

被引:8
|
作者
Singkran, Nuanchan [1 ]
Meixler, Marcia S. [1 ]
机构
[1] Cornell Univ, Dept Nat Resources, Ithaca, NY 14853 USA
关键词
lentic-lotic; land use; freshwater; aquatic ecosystem; nonmetric multidimensional scaling; cluster analysis; stepwise regression;
D O I
10.1007/s10980-008-9212-0
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Influences of habitat and land cover on fish distributions were determined along a lentic-lotic gradient along a tributary to Lake Ontario, New York. Nonmetric multidimensional scaling, cluster analysis, and specific characterization methods were used to classify the fish species into five groups based on their similar patterns of distribution, species-specific habitat relationship, and relative abundance observed along the gradient. A stepwise regression approach was used to select the best habitat and land cover variables to explain variations in the distribution pattern of each fish group. Distribution patterns of the five fish groups were significantly explained by either a set of the selected habitat or land cover predictor variables or a combination of both. Of the 10 habitat variables, water depth, current velocity, aquatic plants, algae, woody debris, sand, and rock-bedrock were selected to explain the variations in distribution patterns of one or more fish groups. Of the 16 land cover types, evergreen wetlands, evergreen plantations, successional shrubs, shrub swamps, roads, and urban areas were selected to explain the variations in distribution patterns of at least one fish group.
引用
收藏
页码:539 / 551
页数:13
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