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High kelp density attracts fishes except for recruiting cryptobenthic species

Shelamoff, V, Layton, C ORCID: 0000-0002-3390-6437, Tatsumi, M ORCID: 0000-0002-6509-1631, Cameron, MJ, Wright, JT ORCID: 0000-0002-1085-4582, Edgar, GJ ORCID: 0000-0003-0833-9001 and Johnson, CR ORCID: 0000-0002-9511-905X 2020 , 'High kelp density attracts fishes except for recruiting cryptobenthic species' , Marine Environmental Research, vol. 161 , pp. 1-10 , doi: 10.1016/j.marenvres.2020.105127.

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Abstract

As foundation species, kelp support productive and species rich communities; however, the effects of kelp structure on mobile species within these complex natural systems are often difficult to assess. We used artificial reefs with transplanted kelp to quantify the influence of kelp patch size and density on fish assemblages including the arrival of recruiting cryptobenthic species. Large patches with dense kelp supported the highest abundance, species richness, and diversity of fishes, with the addition of dense kelp tripling biomass and doubling richness. The abundance of recruits in artificial collectors declined with patch size and was halved on reefs with sparse kelp compared to reefs with dense kelp or no kelp. These results highlight the importance of dense kelp cover in facilitating biodiversity and indicate that kelp addition could support the recovery of degraded coastal ecosystems. Kelp also apparently drives complex interactions affecting the recruitment/behaviour of some cryptobenthic species.

Item Type: Article
Authors/Creators:Shelamoff, V and Layton, C and Tatsumi, M and Cameron, MJ and Wright, JT and Edgar, GJ and Johnson, CR
Keywords: artificial reef, habitat degradation, macroalgae, patch dynamics, eco-engineering, fragmentation, habitat matrix, structural complexity, restoration
Journal or Publication Title: Marine Environmental Research
Publisher: Elsevier Sci Ltd
ISSN: 0141-1136
DOI / ID Number: 10.1016/j.marenvres.2020.105127
Copyright Information:

Copyright 2020 Elsevier Ltd.

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