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• W2020492029 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 425:175-191 (2011) - DOI: https://doi.org/10.3354/meps08994 Relative influence of processes structuring fjord deep-water macrofaunal communities across multiple spatial scales P. E. Brewin1,2,*, P. K. Probert,1 M. F. Barker1 1Department of Marine Science, University of Otago, PO Box 56, Dunedin, New Zealand 2Present address: Shallow Marine Surveys Group, Fisheries Department, PO Box 598, Stanley FIQQ 1ZZ, Falkland Islands *Email: pbrewin@smsg-falklands.org ABSTRACT: We examined the processes that maintain spatially subdivided deep-basin macrobenthic communities in a New Zealand fjord. Based on previously reported quantitative taxa distribution data, we measured physical and biological processes acting at the sample scale (physical and nutritional sediment characteristics, predation), basin scale (disturbance, productivity, local connectivity) and the fjord scale (connectivity to the regional species pool). Using partial redundancy analysis (RDA), we partitioned their effects on community variability. Direct gradient analysis revealed that previously reported high-, medium- and low-diversity communities are similarly grouped according to their position along measured biotic and abiotic gradients, where 36% of community variation in niche space (i.e. after effects of distance along the fjord were removed) was explained by the full model. Variance partitioning showed that basin-scale factors explained the highest amount of variation in basin communities, followed by sample-scale and fjord-scale factors. Sample- and basin-scale factors were correlated. Examination of the residual component of community variation showed that further investigation into basin-scale processes is warranted. These data support the notion of multi-scaled control of community dynamics. Fjords may be unique in representing an ‘ecotone’ type habitat demonstrating processes at similar scales to those maintaining shallow soft-sediment communities, and those of deep-sea systems. Furthermore, this analysis may understate the importance of connectivity to the regional species pool (fjord-scale process) in such habitats where local extinctions may be relatively frequent. KEY WORDS: Macrofauna · Fjord · Spatial scale · Ecotone · Predation · Connectivity · Trophic · Disturbance Full text in pdf format PreviousNextCite this article as: Brewin PE, Probert PK, Barker MF (2011) Relative influence of processes structuring fjord deep-water macrofaunal communities across multiple spatial scales. Mar Ecol Prog Ser 425:175-191. https://doi.org/10.3354/meps08994 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 425. Online publication date: March 14, 2011 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2011 Inter-Research." @default.
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• W2020492029 date "2011-03-14" @default.
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• W2020492029 title "Relative influence of processes structuring fjord deep-water macrofaunal communities across multiple spatial scales" @default.
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• W2020492029 doi "https://doi.org/10.3354/meps08994" @default.
• W2020492029 hasPublicationYear "2011" @default.
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