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Characterising and predicting benthic biodiversity for conservation planning in deepwater environments

Citation

Dunstan, PK and Althaus, F and Williams, A and Bax, NJ, Characterising and predicting benthic biodiversity for conservation planning in deepwater environments, PLoS One, 7, (5) Article e36558. ISSN 1932-6203 (2012) [Refereed Article]


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Copyright Statement

Copyright 2012 Dunstan et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1371/journal.pone.0036558

Abstract

Understanding patterns of biodiversity in deep sea systems is increasingly important because human activities are extending further into these areas. However, obtaining data is difficult, limiting the ability of science to inform management decisions. We have used three different methods of quantifying biodiversity to describe patterns of biodiversity in an area that includes two marine reserves in deep water off southern Australia. We used biological data collected during a recent survey, combined with extensive physical data to model, predict and map three different attributes of biodiversity: distributions of common species, beta diversity and rank abundance distributions (RAD). The distribution of each of eight common species was unique, although all the species respond to a depth-correlated physical gradient. Changes in composition (beta diversity) were large, even between sites with very similar environmental conditions. Composition at any one site was highly uncertain, and the suite of species changed dramatically both across and down slope. In contrast, the distributions of the RAD components of biodiversity (community abundance, richness, and evenness) were relatively smooth across the study area, suggesting that assemblage structure (i.e. the distribution of abundances of species) is limited, irrespective of species composition. Seamounts had similar biodiversity based on metrics of species presence, beta diversity, total abundance, richness and evenness to the adjacent continental slope in the same depth ranges. These analyses suggest that conservation objectives need to clearly identify which aspects of biodiversity are valued, and employ an appropriate suite of methods to address these aspects, to ensure that conservation goals are met.

Item Details

Item Type:Refereed Article
Keywords:seawater, biodiversity, conservation, abundance distributions
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Conservation and biodiversity
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Williams, A (Dr Alan Williams)
UTAS Author:Bax, NJ (Professor Nicholas Bax)
ID Code:119028
Year Published:2012
Web of Science® Times Cited:20
Deposited By:Ecology and Biodiversity
Deposited On:2017-07-25
Last Modified:2017-08-17
Downloads:106 View Download Statistics

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