The ecological role of overwintering fish in the food web of the Culbin Sands lagoon ecosystem, NE Scotland:: Identifying major trophic links and testing effects of the fish Pomatoschistus microps (Pallas) on benthic invertebrates

被引：0

作者：

Mendonca, Vanda Mariyam ^{[1
,2
]}

Raffaelli, David ^{[3
]}

Boyle, Peter ^{[4
]}

Emes, Chas ^{[5
]}

机构：

[1] Minist Fisheries, Marine Sci & Fisheries Ctr, Muscat 113, Oman

[2] Univ Algarve, Ctr Marine & Environm Res CIMAR, Ctr Marine Sci CCMAR, P-8000 Faro, Portugal

[3] Univ York, Dept Environm, York YO10 5DD, N Yorkshire, England

[4] Univ Aberdeen, Dept Zool, Aberdeen AB24 2TZ, Scotland

[5] Univ Aberdeen, Biodivers & Conservat Field Stn, Newburgh AB41 OAA, Scotland

来源：

SCIENTIA MARINA | 2007年 / 71卷 / 04期

关键词：

Pomatoschistus microps; Pleuronectes platessa; energy flow; predator impacts; Culbin Sands lagoon;

D O I：

暂无

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

The Culbin Sands lagoon ecosystem in NE Scotland was studied during a three-year period (1994-1996) to identify the major trophic links from benthic invertebrates to epibenthic predators, and to assess impacts of overwintering fish on their prey communities. Every 2-4 weeks, samples of mobile fauna were collected to study their diets. The major trophic links identified between benthic invertebrates and epibenthic predators were from benthic invertebrates to the shrimp Crangon crangon, and to the common goby Pomatoschistus microps and the plaice Pleuronectes platessa. The energy flow from benthic invertebrates to overwintering fish was estimated at 133 kJ m(-2)yr(-1). A flow of 10 kJ m(-2)yr(-1) was also observed from eggs and larval stages of the overwintering shrimp Crangon crangon to the overwintering fish. Nevertheless, manipulative field experiments showed no significant impacts of the most abundant overwintering fish Pomatoschistus microps on prey community densities, despite an overall individual ingestion rate of 89 J day(-1).

引用

页码：649 / 660

页数：12