Dispersal dynamics in a wind-driven benthic system

被引:118
作者
Commito, JA [1 ]
Thrush, SF
Pridmore, RD
Hewitt, JE
Cummings, VJ
机构
[1] Gettysburg Coll, Environm Studies Program, Gettysburg, PA 17325 USA
[2] Gettysburg Coll, Dept Biol, Gettysburg, PA 17325 USA
[3] Natl Inst Water & Atmospher Res, Hamilton, New Zealand
关键词
D O I
10.4319/lo.1995.40.8.1513
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Bedload and water column traps were used with simultaneous wind and water velocity measurements to study postlarval macrofaunal dispersal dynamics in Manukau Harbour, New Zealand. A 12-fold range in mean wind condition resulted in large differences in water flow (12-fold), sediment flux (285-fold), and trap collection of total number of individuals (95-fold), number of the dominant infaunal organism (84-fold for the bivalve Macomona liliana), and number of species (4-fold). There were very strong, positive relationships among wind condition, water velocity, sediment flux, and postlarval dispersal, especially in the bedload. Local density in the ambient sediment was not a good predictor of dispersal. Results indicate that postlarval dispersal may influence benthic abundance patterns over a range of spatial scales.
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页码:1513 / 1518
页数:6
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