Species assemblage and recruitment patterns of echinoderms on shallow rocky reefs in central New Zealand期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Species assemblage and recruitment patterns of echinoderms on shallow rocky reefs in central New Zealand

Authors:	Andrea Glockner-Fagetti Nicole E Phillips

Institution:	1. School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand andglockner@gmail.comhttps://orcid.org/0000-0001-9674-7202;3. School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand https://orcid.org/0000-0002-9234-8164

Abstract:	ABSTRACT Echinoderms play important ecological roles in the benthic community, but the processes that regulate their distribution are still poorly understood. The aim of this study was to describe the community structure in the shallow rocky reefs of the Wellington region of central New Zealand. Five sites from a harbour and an open coast were surveyed for adult echinoderm density and habitat composition. Additionally, artificial collectors were deployed to assess recruitment patterns. Five taxa were responsible for the assemblage variation within sites and their abundance was highly correlated with habitat composition. Patiriella regularis was highly abundant in all sites, while Coscinasterias muricata and Evechinus chloroticus were dominant in the Harbour. Echinoderm settlement showed interannual variations, as well as differences between locations. There was a significant pulse of C. muricata settlers, while ophiuroids were present in lower numbers but constantly during the studied period. E. chloroticus settlement was sporadic and the absence of a juvenile cohort in the open coast sites suggests that recruitment might not occur for up to 4 years. The present study provides insights on the echinoderm assemblage in the shallow rocky reefs of the Wellington region and contributes to a better understanding of recruitment patterns shaping population structure.

Keywords:	Abundance habitat composition settlement Evechinus chloroticus Coscinasterias muricata Patiriella regularis DNA-barcoding

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