Variance estimate and taxonomic resolution: An analysis of macrobenthic spatial patterns at different scales in a Western Mediterranean coastal lagoon

被引：43

作者：

Tataranni, M. ^{[1
]}

Maltagliati, F. ^{[1
]}

Floris, A. ^{[2
]}

Castelli, A. ^{[1
]}

Lardicci, C. ^{[1
]}

机构：

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

[2] Univ Sassari, Dipartimento Zool & Genet Evoluzionist, I-07100 Sassari, Italy

来源：

MARINE ENVIRONMENTAL RESEARCH | 2009年 / 67卷 / 4-5期

关键词：

Spatial scales; Taxonomic resolution; Multivariate analysis; Macrobenthos; Coastal lagoon; Monitoring; Western Mediterranean; SEVERE DYSTROPHIC CRISES; MACROZOOBENTHIC COMMUNITY; BENTHIC ASSEMBLAGES; VARIABILITY; BIODIVERSITY; SUFFICIENCY; ESTUARINE; POLLUTION; SEDIMENT; HETEROGENEITY;

D O I：

10.1016/j.marenvres.2009.02.003

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of taxonomic resolution on the variance estimates of macrobenthic assemblages were studied at four spatial scales in a Mediterranean coastal lagoon. The assemblages exhibited significant differences at all the investigated scales; however, spatial variability was mainly associated with the smallest and the largest scales. The decrease of taxonomic resolution (from species to family) was not related to a decrease of the overall variability and similar estimates of variance components were obtained using species and family resolution levels. The ordination models derived from species and family abundances were very similar both in terms of location and dispersion effect, while further aggregation to the class level began to alter the observed spatial patterns. In future studies aimed at assessing changes in the lagoon, resources derived from the cost reductions achieved using family level could be employed to plan more frequent Surveys and/or to adopt complex spatial sampling designs with a high number of replicates. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：219 / 229

页数：11

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[12] Variability in abundance of algae and invertebrates at different spatial scales on rocky sea shores [J].