Tropical insular fish assemblages are resilient to flood disturbance
作者: William E. SmithThomas J. Kwak
作者单位: 11 North Carolina Cooperative Fish and Wildlife Research Unit, Department of Biology, Campus Box 7617, North Carolina State University, Raleigh, North Carolina 27695 USA
22 U.S. Geological Survey, North Carolina Cooperative Fish and Wildlife Research Unit, Department of Biology, Campus Box 7617, North Carolina State University, Raleigh, North Carolina 27695 USA
刊名: Ecosphere, 2015, Vol.6 (12)
来源数据库: Ecological Society of America
DOI: 10.1890/ES15-00224.1
关键词: Agonostomus monticolaamphidromous fishesassemblageCaribbean islandcommunitydisturbanceEleotris pernigerfloodingGobiomorus dormitorSicydiumstochastic processestropical stream fishes
原始语种摘要: Periods of stable environmental conditions, favoring development of ecological communities regulated by density-dependent processes, are interrupted by random periods of disturbance that may restructure communities. Disturbance may affect populations via habitat alteration, mortality, or displacement. We quantified fish habitat conditions, density, and movement before and after a major flood disturbance in a Caribbean island tropical river using habitat surveys, fish sampling and population estimates, radio telemetry, and passively monitored PIT tags. Native stream fish populations showed evidence of acute mortality and downstream displacement of surviving fish. All fish species were reduced in number at most life stages after the disturbance, but populations responded with recruitment...
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关键词翻译
关键词翻译
  • disturbance 扰乱
  • population 母体
  • resilient 有弹性的
  • flood 洪水
  • conditions 条件式
  • indicating 指示
  • assemblage 集合
  • uneven 不平坦的
  • upstream 向上游
  • density 密度