Convergence in floodplain pond communities indicates different pathways to community assembly

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dc.contributor.authorChanut, P. C. M.en_NZ
dc.contributor.authorBurdon, Francis J.en_NZ
dc.contributor.authorDatry, Ten_NZ
dc.contributor.authorRobinson, Cen_NZ
dc.date.accessioned2023-04-12T00:49:13Z
dc.date.available2023-04-12T00:49:13Z
dc.date.issued2023en_NZ
dc.description.abstractDisturbance can strongly influence ecosystems, yet much remains unknown about the relative importance of key processes (selection, drift, and dispersal) in the recovery of ecological communities following disturbance. We combined field surveys with a field experiment to elucidate mechanisms governing the recovery of aquatic macroinvertebrates in habitats of an alluvial floodplain following flood disturbance. We monitored macroinvertebrates in 24 natural parafluvial habitats over 60 days after a major flood, as well as the colonization of 24 newly-built ponds by macroinvertebrates over 45 days in the same floodplain. We examined the sources of environmental variation and their relative effects on aquatic assemblages using a combination of null models and Mantel tests. We also used a joint species distribution model to investigate the importance of primary metacommunity structuring processes during recovery: selection, dispersal, and drift. Contrary to expectations, we found that beta diversity actually decreased among natural habitats over time after the flood or the creation of the ponds, instead of increasing. This result was despite environmental predictors showing contrasting patterns for explaining community variation over time in the natural habitats compared with the experimental ponds. Flood heterogeneity across the floodplain and spatial scale differences between the experimental ponds and the natural habitats seemingly constrained the balance between deterministic and stochastic processes driving the ecological convergence of assemblages over time. While environmental selection was the dominant structuring process in both groups, biotic interactions also had a prominent influence on community assembly. These findings have profound implications towards understanding metacommunity structuring in riverscapes that includes common linkages between disturbance heterogeneity, spatial scale properties, and community composition.en_NZ
dc.format.mimetypeapplication/pdf
dc.identifier.doi10.1007/s00027-023-00957-9en_NZ
dc.identifier.issn1015-1621en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/15678
dc.language.isoen
dc.publisherSpringeren_NZ
dc.relation.isPartOfAquatic Sciences: research across boundariesen_NZ
dc.relation.urihttps://doi.org/10.1007/s00027-023-00957-9en_NZ
dc.relation.urihttps://doi.org/10.1007/s00027-023-00957-9
dc.rights© The Author(s) 2023. This work is licensed under a CC BY 4.0 licence.
dc.subjectDisturbanceen_NZ
dc.subjectFloodplainen_NZ
dc.subjectMacroinvertebratesen_NZ
dc.subjectMetacommunityen_NZ
dc.subjectSuccessionen_NZ
dc.titleConvergence in floodplain pond communities indicates different pathways to community assemblyen_NZ
dc.typeJournal Article
dspace.entity.typePublication
pubs.begin-page1
pubs.end-page16
pubs.issue59en_NZ
pubs.volume85en_NZ
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