Context-dependent community facilitation in seagrass meadows along a hydrodynamic stress gradient

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http://hdl.handle.net/10138/332719

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Meysick , L , Ysebaert , T , Jansson , A , Montserrat , F , Valanko , S , Villnäs , A , Boström , C , Norkko , J & Norkko , A 2019 , ' Context-dependent community facilitation in seagrass meadows along a hydrodynamic stress gradient ' , Journal of Sea Research , vol. 150-151 , pp. 8-23 . https://doi.org/10.1016/j.seares.2019.05.001

Title: Context-dependent community facilitation in seagrass meadows along a hydrodynamic stress gradient
Author: Meysick, Lukas; Ysebaert, Tom; Jansson, Anna; Montserrat, Fransesc; Valanko, Sebastian; Villnäs, Anna; Boström, Christoffer; Norkko, Joanna; Norkko, Alf
Contributor: University of Helsinki, Tvärminne Zoological Station
University of Helsinki, Tvärminne Zoological Station
University of Helsinki, Tvärminne Zoological Station
University of Helsinki, Tvärminne Benthic Ecology Team
Date: 2019-08
Language: eng
Number of pages: 16
Belongs to series: Journal of Sea Research
ISSN: 1385-1101
URI: http://hdl.handle.net/10138/332719
Abstract: Foundation species host diverse associated communities by ameliorating environmental stress. The strength of this facilitative effect can be highly dependent on the underlying biotic and abiotic context. We investigated community level patterns of macrofauna associated with and adjacent to the marine foundation species eelgrass (Zostera marina) along a hydrodynamic stress gradient. We could demonstrate that the relative importance of this foundation species for its infaunal community increases with environmental variables associated with increasing hydrodynamic stress (depth, sand ripples formation, sediment grain size and organic content). Faunal assemblages in proximity to the Zostera patch edges, however, showed no (infauna) or negative (epifauna) response to hydrodynamic stress. Our study highlights that the facilitative outcome of a foundation species is conditional to the faunal assemblage in question and can be highly variable even between positions within the habitat.
Subject: Ecosystem engineer
Conditional facilitation
Seagrass
Habitat modification
Foundation species
ZOSTERA-MARINA L
PATTERNS
PHYSICAL STRESS
DISTURBANCE
Zostera marina
OYSTER REEFS
HABITAT EDGES
COMPETITION
HYPOTHESIS
SPECIES RICHNESS
POSITIVE INTERACTIONS
1181 Ecology, evolutionary biology
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