Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification
Niche segregation allows competing species to capture resources in contrasting ways so they can co-exist and maintain diversity, yet global change is simplifying ecosystems and associated niche diversity. Whether climate perturbations alter niche occupancy among co-occurring species and affect speci...
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Online Access: | http://hdl.handle.net/2440/117678 https://doi.org/10.1016/j.scitotenv.2018.07.168 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/117678 2023-12-17T10:47:52+01:00 Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification Nagelkerken, I. Goldenberg, S. Coni, E. Connell, S. 2018 http://hdl.handle.net/2440/117678 https://doi.org/10.1016/j.scitotenv.2018.07.168 en eng Elsevier Science of the Total Environment, 2018; 645:615-622 0048-9697 1879-1026 http://hdl.handle.net/2440/117678 doi:10.1016/j.scitotenv.2018.07.168 Nagelkerken, I. [0000-0003-4499-3940] Connell, S. [0000-0002-5350-6852] © 2018 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.scitotenv.2018.07.168 Species interactions niche overlap biodiversity CO₂ vents habitat use diet Journal article 2018 ftunivadelaidedl https://doi.org/10.1016/j.scitotenv.2018.07.168 2023-11-20T23:32:10Z Niche segregation allows competing species to capture resources in contrasting ways so they can co-exist and maintain diversity, yet global change is simplifying ecosystems and associated niche diversity. Whether climate perturbations alter niche occupancy among co-occurring species and affect species diversity is a key, but unanswered question. Using CO₂ vents as natural analogues of ocean acidification, we show that competing fish species with overlapping diets are partially segregated across microhabitat niches and differently-orientated substrata under ambient CO₂ conditions. Under elevated CO₂, benthic microhabitats experienced a significant increase in non-calcifying turf and fleshy algae but a sharp reduction in calcareous algae. The increased availability of turf and fleshy algae supported increased densities of a competitively dominant species, whilst the reduction in calcifying algal microhabitats decreased densities of several subordinate species. The change in microhabitat availability also drove an increased overlap in microhabitat use among competing fishes at the vents, associated with a reduced fish species richness on horizontal substrates. We conclude that loss of preferred microhabitat niches, exacerbated by population proliferation of competitively dominant species, can drive population losses of less common and subordinate species, and reduce local species richness. The indirect effects of ocean acidification on microhabitat availability can therefore impair maintenance of species populations, and drive changes in local community and biodiversity patterns. Ivan Nagelkerken, Silvan U. Goldenberg, Ericka O.C. Coni, Sean D. Connell Article in Journal/Newspaper Ocean acidification The University of Adelaide: Digital Library Science of The Total Environment 645 615 622 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Species interactions niche overlap biodiversity CO₂ vents habitat use diet |
spellingShingle |
Species interactions niche overlap biodiversity CO₂ vents habitat use diet Nagelkerken, I. Goldenberg, S. Coni, E. Connell, S. Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
topic_facet |
Species interactions niche overlap biodiversity CO₂ vents habitat use diet |
description |
Niche segregation allows competing species to capture resources in contrasting ways so they can co-exist and maintain diversity, yet global change is simplifying ecosystems and associated niche diversity. Whether climate perturbations alter niche occupancy among co-occurring species and affect species diversity is a key, but unanswered question. Using CO₂ vents as natural analogues of ocean acidification, we show that competing fish species with overlapping diets are partially segregated across microhabitat niches and differently-orientated substrata under ambient CO₂ conditions. Under elevated CO₂, benthic microhabitats experienced a significant increase in non-calcifying turf and fleshy algae but a sharp reduction in calcareous algae. The increased availability of turf and fleshy algae supported increased densities of a competitively dominant species, whilst the reduction in calcifying algal microhabitats decreased densities of several subordinate species. The change in microhabitat availability also drove an increased overlap in microhabitat use among competing fishes at the vents, associated with a reduced fish species richness on horizontal substrates. We conclude that loss of preferred microhabitat niches, exacerbated by population proliferation of competitively dominant species, can drive population losses of less common and subordinate species, and reduce local species richness. The indirect effects of ocean acidification on microhabitat availability can therefore impair maintenance of species populations, and drive changes in local community and biodiversity patterns. Ivan Nagelkerken, Silvan U. Goldenberg, Ericka O.C. Coni, Sean D. Connell |
format |
Article in Journal/Newspaper |
author |
Nagelkerken, I. Goldenberg, S. Coni, E. Connell, S. |
author_facet |
Nagelkerken, I. Goldenberg, S. Coni, E. Connell, S. |
author_sort |
Nagelkerken, I. |
title |
Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
title_short |
Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
title_full |
Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
title_fullStr |
Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
title_full_unstemmed |
Microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
title_sort |
microhabitat change alters abundances of competing species and decreases species richness under ocean acidification |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://hdl.handle.net/2440/117678 https://doi.org/10.1016/j.scitotenv.2018.07.168 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
http://dx.doi.org/10.1016/j.scitotenv.2018.07.168 |
op_relation |
Science of the Total Environment, 2018; 645:615-622 0048-9697 1879-1026 http://hdl.handle.net/2440/117678 doi:10.1016/j.scitotenv.2018.07.168 Nagelkerken, I. [0000-0003-4499-3940] Connell, S. [0000-0002-5350-6852] |
op_rights |
© 2018 Elsevier B.V. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.scitotenv.2018.07.168 |
container_title |
Science of The Total Environment |
container_volume |
645 |
container_start_page |
615 |
op_container_end_page |
622 |
_version_ |
1785571851506810880 |