文章基本信息

标题：Associating spatial patterns of zooplankton abundance with water temperature, depth, planktivorous fish and chlorophyll
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作者：Ari Voutilainen ; Juha Jurvelius ; Juha Lilja 等
期刊名称：Boreal Environment Research
印刷版ISSN：1239-6095
出版年度：2016
卷号：21
期号：1-2
页码：101-114
语种：English
出版社：Finnish Limnological Society
摘要：The spatial distribution of zooplankton was studied in a boreal lake system. Distribution patterns were associated with water temperature and depth, abundance of fish, and chlorophyll-a concentration. Principal coordinates of neighbor matrices (PCNM) were used to model spatial structures (vectors between study locations) which were in turn used in regression models to explain plankton distribution. Data were also analyzed using detrended correspondence analysis (DCA). Models based on PCNM highlighted differences between sites, whereas DCA emphasized differences between the epi-, meta- and hypolimnion. Bottom-up regulation was the primary force in determining zooplankton and fish abundance. Signs of top-down regulation were also found. The main forces driving spatial heterogeneity of zooplankton in lakes differed among thermal strata and among zooplankton size categories and species. The study stressed the need for gathering data with more than one method simultaneously and emphasized the benefits of combining results from two or more statistical techniques.