4.7 Article

Variations in coralligenous assemblages from local to biogeographic spatial scale

期刊

MARINE ENVIRONMENTAL RESEARCH
卷 169, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2021.105375

关键词

Biogeography; Coralligenous reefs; Gorgonians; Mediterranean sea; Spatial variability

资金

  1. Italian Ministry of Education and Research: PRIN

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The study contributes to understanding the spatial variability of coralligenous reefs around the island of Sardinia by evaluating patterns from local to biogeographic scale. The structure of coralligenous reefs is found to be related to biogeographic patterns, rather than spatial distance, highlighting the need for specific reference conditions to assess ecological quality depending on the biogeographic area.
The present study aims at contributing to the knowledge of the spatial variability of coralligenous reefs through the evaluation of patterns ranging from local to biogeographic scale around the island of Sardinia. The coralligenous reef assemblages of six areas were studied through a hierarchical sampling design: three sites per area were selected, in each site three plots were sampled and in each plot ten photographic samples were collected. The structure of coralligenous reefs across closed biogeographic regions is described, highlighting that nearly pristine assemblages, although characterized by similar high diversity, can be either dominated by animals, such as gorgonians and bryozoans, or macroalgae. The observed variations seem largely related to biogeographic patterns rather than spatial distance, supporting the need to identify specific reference conditions to assess the ecological quality of this habitat depending on the biogeographic area to be monitored.

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