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The contribution of different habitat types to species diversity of Baltic uplift islands
Friedrich-Schiller-Universität Jena, Germany.
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för miljö- och livsvetenskaper (from 2013).ORCID-id: 0000-0002-6953-3855
Friedrich-Schiller-Universität Jena, Germany.
Friedrich-Schiller-Universität Jena, Germany.
2019 (Engelska)Ingår i: Basic and Applied Ecology, ISSN 1439-1791, E-ISSN 1618-0089, Vol. 41, s. 22-32Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Islands are vulnerable ecosystems worldwide, increasingly exposed to human pressure, global climate change and invasive species. Thus, understanding island species diversity is key for nature conservation. Recent studies on insular plant communities indicated that habitat-specific species composition and richness might largely affect diversity patterns observed at the island scale. In consequence, habitat-based approaches are needed to (i) estimate how environmental changes at the habitat scale may affect island diversity, and to (ii) estimate the contribution of different patches of the same habitat to island diversity with respect to habitat-specific environmental constraints. In the present study, we tested these habitat-to-island diversity relationships for shoreline habitats (brackish reeds, salt marsh, rocky shore, tall herbs) and island interior habitats (rocks, semi-natural grassland, pioneer forest, coniferous forest, mixed forest) using 108 islands of three Baltic archipelagos in Sweden. These islands differed in terms of island-scale variables describing effects of island configuration and distance, and habitat-scale variables representing the effects of habitat area, abiotic environment and land-use. The studied habitats differed in their contribution to island species diversity, called habitat specificity. Shoreline habitats shared many common specialist species adapted to extreme conditions like sea salt or bird grazing, while habitats of the island interior harbored mainly species adapted to the specific conditions of a single habitat. We found high variability in habitat specificity as a consequence of habitat-specific environmental factors. Variability was highest for grasslands, where it was related to abandonment and soil fertility, stressing the importance of grassland management for maintaining island biodiversity. Habitats with high habitat specificity through either high species richness or many habitat-specific specialists should be the primary targets for biodiversity management. (C) 2019 Gesellschaft fur Okologie. Published by Elsevier GmbH. All rights reserved.

Ort, förlag, år, upplaga, sidor
Elsevier, 2019. Vol. 41, s. 22-32
Nyckelord [en]
Habitat specificity, Vegetation composition, Gamma diversity, Landscape metrics, Archipelago, Biodiversity management
Nationell ämneskategori
Ekologi
Forskningsämne
Biologi
Identifikatorer
URN: urn:nbn:se:kau:diva-75968DOI: 10.1016/j.baae.2019.09.004ISI: 000498887100003OAI: oai:DiVA.org:kau-75968DiVA, id: diva2:1378700
Tillgänglig från: 2019-12-13 Skapad: 2019-12-13 Senast uppdaterad: 2020-01-28Bibliografiskt granskad

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Eckstein, Rolf Lutz

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Basic and Applied Ecology
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