Flow modifies the effect of biodiversity on ecosystem functioning: an in situ study of estuarine sediments

被引：67

作者：

Biles, CL ^{[1
]}

Solan, M

Isaksson, I

Paterson, DM

Emes, C

Raffaelli, DG

机构：

[1] Univ St Andrews, Sch Biol Sci, Gatty Marine Lab, St Andrews KY16 8LB, Fife, Scotland

[2] Univ Aberdeen, Oceanog Lab, Newburgh AB41 6AA, Aberdeen, Scotland

[3] Univ Gothenburg, Dept Marine Ecol, Kristineberg Marine Res Stn, SE-45034 Fiskebackskil, Sweden

[4] Univ York, York YO10 5DD, N Yorkshire, England

来源：

JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY | 2003年 / 285卷

关键词：

benthic; biodiversity; ecosystem functioning; flow; in situ; species richness;

D O I：

10.1016/S0022-0981(02)00525-7

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The effect of flow and biodiversity on ecosystem functioning was investigated in an estuarine system using in situ benthic chambers. Macrofaunal communities were artificially assembled to manipulate both species richness and functional trait richness. In addition, naturally occurring communities were sampled in order to determine the effect of macrofaunal and sediment disruption. Ecosystem functioning was assessed by measurement of nutrient release (NH4-N) from the sediment, a process essential for primary production. Natural and assembled communities were found to differ significantly, demonstrating the effect of experimental manipulation on the system. Flow was found to have a highly significant effect on ecosystem functioning in both natural and assembled communities in treatments containing macrofauna. No significant difference between static and flow treatments was found in macrofaunal-free controls, indicating that flow generates an effect through promoting changes in bioturbatory activity of the infauna causing greater disruption to the sediment. In assembled communities, functional richness significantly increased ecosystem functioning. Species richness had no influence in assembled communities. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：165 / 177

页数：13

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