Animal-sediment relationships: Evaluating the 'Pearson-Rosenberg paradigm' in Mediterranean coastal lagoons

MARINE POLLUTION BULLETIN

卷:58

Article

Magni, P.^1,5  Tagliapietra, D.²  Lardicci, C.³  Balthis, L.⁴  Castelli, A.³  Como, S.⁵  Frangipane, G.²  Giordani, G.⁶  Hyland, J.⁴  Maltagliati, F.³  Pessa, G.⁷  Rismondo, A.⁷  Tataranni, M.³  Tomassetti, P.⁸  Viaroli, P.⁶ 

[1] CNR, IAMC, I-09072 Oristano, Italy

[2] CNR ISMAR, I-30122 Venice, Italy

[3] Univ Pisa, Dipartimento Biol, I-56126 Pisa, Italy

[4] NOAA, Natl Ocean Serv, Charleston, SC 29412 USA

[5] IMC, I-09072 Oristano, Italy

[6] Univ Parma, Dipartimento Sci Ambientali, I-43100 Parma, Italy

[7] SELC Soc Cooperat, I-30175 Venice, Italy

[8] ISPRA, I-00168 Rome, Italy

关键词: Macrobenthos;    Ecological indicators;    Eutrophication;    Benthic diversity;    Coastal lagoons;    Mediterranean Sea;   

DOI  :  10.1016/j.marpolbul.2008.12.009

来源: Elsevier

【 摘 要 】

We investigated the applicability of the Pearson-Rosenberg (P-R) conceptual model describing a generalized pattern of response of benthic communities in relation to organic enrichment to Mediterranean Sea coastal lagoons. Consistent with P-R model predictions, benthic diversity and abundance showed two different peaks at low (>2.5-5 mg g(-1)) and high (>25-30 mg g(-1)) total organic carbon (TOC) ranges, respectively. We identified TOC thresholds indicating that risks of reduced benthic diversity should be relatively low at TOC values < about 10 mg g(-1), high at TOC values > about 28 mg g(-1), and intermediate at values in-between. Predictive ability within these ranges was high based on results of re-sampling simulation. While not a direct measure of causality, it is anticipated that these TOC thresholds should serve as a general screening-level indicator for evaluating the likelihood of reduced sediment quality and associated bioeffects in such eutrophic systems of the Mediterranean Sea. (C) 2008 Elsevier Ltd. All rights reserved.

【 授权许可】

Free