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Species that share traits do not necessarily form distinct and universally applicable functional effect groups

Species that share traits do not necessarily form distinct and universally applicable functional effect groups
Species that share traits do not necessarily form distinct and universally applicable functional effect groups
Recent studies considering the contribution of biodiversity to ecosystem functioning have emphasised the functional importance of individual species and, in so doing, have rekindled the use of categorical descriptors that group species according to their relative contribution to ecosystem processes or functioning. Such functional effect groupings, however, tend to be based on specific traits or contributory roles that are assumed to adequately characterise the functional importance of a species, rather than being based on direct measures of ecosystem processes and functions. This decoupling of organism-environment interaction is difficult to reconcile and, when applied widely, distorts understanding of the mediating role that species play in natural ecosystems. In this study, we begin to address this problem by characterising the functional contributions of 7 benthic invertebrate species for 2 ecosystem processes (particle reworking and bioirrigation) linked to 4 ecosystem functions (changing concentrations of NH4-N, NOx-N, PO4-P and SiO2-Si) and use these data to derive functional effect groupings. We show that whilst it is possible to categorise species according to how they influence ecosystem properties, the membership and number of functional effect groups depends on which ecosystem property is considered. Furthermore, we demonstrate that categorisations based on functional effects are not synonymous with species taxonomy and that they cannot be applied generically even when considering closely linked biogeochemical processes. Collectively, our findings call for a rethink of how functional effect groups are defined and emphasise the need to interrogate presumed links between species and ecosystem properties across a range of biodiversity-environment contexts
Functional groups, Functional traits, Ecosystem function, Functional diversity, Bioturbation, Bioirrigation
23-34
Murray, F.
aff97bff-ab22-4e36-a86b-a6b64ffcf1d3
Douglas, A.
c749dee9-fa12-4a05-bc7c-bf0ec1d74cfe
Solan, M.
a05395b0-1720-4ceb-a8a9-6d85f643dc51
Murray, F.
aff97bff-ab22-4e36-a86b-a6b64ffcf1d3
Douglas, A.
c749dee9-fa12-4a05-bc7c-bf0ec1d74cfe
Solan, M.
a05395b0-1720-4ceb-a8a9-6d85f643dc51

Murray, F., Douglas, A. and Solan, M. (2014) Species that share traits do not necessarily form distinct and universally applicable functional effect groups. Marine Ecology Progress Series, 516, 23-34. (doi:10.3354/meps11020).

Record type: Article

Abstract

Recent studies considering the contribution of biodiversity to ecosystem functioning have emphasised the functional importance of individual species and, in so doing, have rekindled the use of categorical descriptors that group species according to their relative contribution to ecosystem processes or functioning. Such functional effect groupings, however, tend to be based on specific traits or contributory roles that are assumed to adequately characterise the functional importance of a species, rather than being based on direct measures of ecosystem processes and functions. This decoupling of organism-environment interaction is difficult to reconcile and, when applied widely, distorts understanding of the mediating role that species play in natural ecosystems. In this study, we begin to address this problem by characterising the functional contributions of 7 benthic invertebrate species for 2 ecosystem processes (particle reworking and bioirrigation) linked to 4 ecosystem functions (changing concentrations of NH4-N, NOx-N, PO4-P and SiO2-Si) and use these data to derive functional effect groupings. We show that whilst it is possible to categorise species according to how they influence ecosystem properties, the membership and number of functional effect groups depends on which ecosystem property is considered. Furthermore, we demonstrate that categorisations based on functional effects are not synonymous with species taxonomy and that they cannot be applied generically even when considering closely linked biogeochemical processes. Collectively, our findings call for a rethink of how functional effect groups are defined and emphasise the need to interrogate presumed links between species and ecosystem properties across a range of biodiversity-environment contexts

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More information

Published date: 3 December 2014
Keywords: Functional groups, Functional traits, Ecosystem function, Functional diversity, Bioturbation, Bioirrigation
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 373271
URI: http://eprints.soton.ac.uk/id/eprint/373271
PURE UUID: eb06b0a3-ed4b-4515-ba68-60888caf5a67

Catalogue record

Date deposited: 12 Jan 2015 16:36
Last modified: 15 Jul 2019 21:33

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