The macroinvertebrate seedbank promotes community persistence in temporary rivers across climate zones

Stubbington, R. ORCID: 0000-0001-8475-5109 and Datry, T., 2013. The macroinvertebrate seedbank promotes community persistence in temporary rivers across climate zones. Freshwater Biology, 58 (6), pp. 1202-1220. ISSN 1365-2427

[img]
Preview
Text
210809_PubSub2029.pdf

Download (1MB) | Preview

Abstract

Summary: 1. Aquatic macroinvertebrates inhabiting temporary rivers are typically described as having low resistance to riverbed drying. However, little research has examined the ‘seedbank’ within dry riverbed sediments, which comprises aquatic life stages that survive in dewatered sediments and from which active organisms may develop only after surface water returns. 2. We synthesised published and unpublished data from studies that had experimentally rehydrated sediments collected from dry riverbeds, to establish the importance of the seedbank in promoting macroinvertebrate community resistance. Studies from across climate zones were included, to examine seedbank importance in relation to environmental harshness and, in particular, sediment moisture. We also assessed the importance of the seedbank relative to alternative habitats promoting persistence of the flowing river (FR) assemblage. We predicted that the proportion of the FR assemblage present in rehydrated sediments (RS) would decrease with environmental harshness, due to conditions within the sediments becoming less conducive to the survival of biota. 3. A negative relationship between the proportion of FR taxa present in RS and harshness was observed, and this contributed to a reduction in the compositional similarity of FR and RS assemblages as harshness increased. Significant positive correlations were identified between sediment moisture content and macroinvertebrate community metrics (density and taxon richness) in some systems.

Item Type: Journal article
Publication Title: Freshwater Biology
Creators: Stubbington, R. and Datry, T.
Date: 2013
Volume: 58
Number: 6
ISSN: 1365-2427
Identifiers:
NumberType
10.1111/fwb.12121DOI
Rights: Copyright © 2013 John Wiley & Sons, Inc. All Rights Reserved.
Divisions: Schools > School of Science and Technology
Depositing User: EPrints Services
Date Added: 09 Oct 2015 10:42
Last Modified: 09 Jun 2017 13:36
URI: http://irep.ntu.ac.uk/id/eprint/16855

Actions (login required)

Edit View Edit View

Views

Views per month over past year

Downloads

Downloads per month over past year