Implications of nutrient decline in the seagrass ecosystem success

被引：44

作者：

Cardoso, P. G. ^{[1
]}

Leston, S. ^{[1
]}

Grilo, T. F. ^{[1
]}

Bordalo, M. D. ^{[1
]}

Crespo, D. ^{[1
]}

Raffaelli, D. ^{[2
]}

Pardal, M. A. ^{[1
]}

机构：

[1] Univ Coimbra, IMAR, CMA, Marine & Environm Res Ctr,Dept Zool, P-3004517 Coimbra, Portugal

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

来源：

MARINE POLLUTION BULLETIN | 2010年 / 60卷 / 04期

关键词：

Restoration; Nutrient reduction; Seagrasses; Macrobenthic assemblages; Hysteresis; MANAGEMENT; COASTAL; IMPACT; ESTUARINE; SCIENCE; EVENTS; SHIFTS;

D O I：

10.1016/j.marpolbul.2009.11.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Mondego estuary (Portugal) suffered major changes in environmental quality due to eutrophication, however, in the late 1990s a restoration project was implemented in order to return the system to its original condition. The main goal of this paper is to evaluate the ecosystem response to the restoration measures applied at three different levels: water quality, primary producers and primary consumers. In post-restoration period a clear decline was observed in dissolved inorganic nitrogen which was reflected in the gradual recovery of Zostera noltii and a concomitant decline in green macroalgae. Macrobenthic assemblages responded variably to the recovery process. In the seagrass bed and intermediate area, there was a large increase in total biomass, but in the eutrophic area species diversity increased. Despite improvement in the ecological status of the system, full recovery has not been achieved yet, possible due to hysteresis in the dynamics of this system. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：601 / 608

页数：8

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