Conditional outcomes of facilitation by a habitat-modifying subtidal bivalve

Ecology
Alf NorkkoGreig A Funnell

Abstract

Facilitation by habitat modifiers is common in ecological communities, but the potential for temporal and spatial variations in environmental conditions to modify the outcome of these interactions and influence the strength of feedbacks is poorly understood. Suspension-feeding bivalves are important habitat modifiers that can facilitate surrounding communities by providing refuge from predation and changing boundary flows and through the production of organically enriched biodeposits. However, numerous studies have highlighted the problem of finding generalizable patterns. We tested the strength and generality of the relationship between the large suspension-feeding bivalve Atrina zelandica and surrounding macrofauna and hypothesized that facilitation by Atrina is conditional and modulated by site-specific suspended sediment concentration (SSC), which influences the quantity and quality of biodeposit production. We found temporally consistent patterns of higher rates of biodeposition and increased abundance and species richness in close proximity to Atrina under low SSC conditions. Facilitation strength decreased with increasing SSC, suggesting that the facilitation effect of Atrina is reduced and reversed along this environmen...Continue Reading

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Citations

May 12, 2011·Integrative and Comparative Biology·Sarah Ann WoodinNils Volkenborn
Jun 26, 2009·Proceedings. Biological Sciences·Simon F ThrushMariachiara Chiantore
May 6, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·David M Post, Eric P Palkovacs
Jul 26, 2012·Ecological Applications : a Publication of the Ecological Society of America·S F ThrushA M Lohrer
Dec 24, 2013·Ecology·Anna VillnäsAlf Norkko
Sep 13, 2013·Scientific Reports·Alf NorkkoConrad Pilditch
Sep 6, 2015·Journal of Invertebrate Pathology·Loren D Coen, Melanie J Bishop
Sep 2, 2014·Biological Reviews of the Cambridge Philosophical Society·Gustavo Q RomeroJulia Koricheva
Jul 3, 2013·Marine Environmental Research·Ignacio GestosoCelia Olabarria
Jun 17, 2014·Trends in Ecology & Evolution·Paul V R SnelgroveAlf Norkko
Sep 25, 2017·Ecological Applications : a Publication of the Ecological Society of America·Anna VillnäsAlf Norkko
Oct 22, 2015·Ecology and Evolution·Sebastian ValankoAlf Norkko
Sep 2, 2020·Ecological Applications : a Publication of the Ecological Society of America·Simon F ThrushConrad Pilditch
Jan 2, 2021·Marine Environmental Research·Marta RibóGeoffroy Lamarche

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