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- Title
Species-specific mediation of temperature and community interactions by multiple foundation species.
- Authors
Dijkstra, Jennifer A.; Boudreau, Jacqueline; Dionne, Michele
- Abstract
Foundation species can provide habitat that modify abiotic and biotic processes that contribute to ecosystem function. While many studies have focused on the processes and consequences of a focal foundation species, understanding the ecological equivalence of co-occurring foundation species is important to identify key species responsible for ecosystem function. Here, we investigated the relative contributions of co-occurring foundation species on abiotic (temperature) and biotic responses of invertebrate species (recruitment, persistence, growth and survival). In a series of experimental field studies, we manipulated foundation species to measure invertebrate recruitment, persistence, and predation. A laboratory experiment measured foundation species effects on herbivore growth. Results demonstrated that macroalgal ( Fucus vesiculosus ecad and Ascophyllum nodosum ecad scorpioides) intermediate foundation species provide habitat, food, and alleviate abiotic stress for dominant littorinid herbivores that surpass that provided by the primary species ( Spartina alterniflora). These foundation effects were species-specific with F. vesiculosus ecad important for early life-history stages (enhanced recruitment and early growth of littorinid snails) and A. nodosum ecad important later on as a refuge from predators ( Carcinus meanas) and stressful temperature. Understanding of the different effects of co-occurring foundation species on population and community processes is necessary for predicting community response to natural disturbance, species invasion, and ecosystem-based management actions.
- Subjects
HABITATS; INVERTEBRATES; FRESHWATER animals; PREDATORY animals; GASTROPODA
- Publication
Oikos, 2012, Vol 121, Issue 5, p646
- ISSN
0030-1299
- Publication type
Article
- DOI
10.1111/j.1600-0706.2011.19712.x