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Regional variations in occupancy frequency distributions patterns between odonate assemblages in Fennoscandia
Water and Environment Association of the River Kymi, Kouvola, Finland.
University of Jyväskylä, Jyväskylä, Finland.
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).
Regional Museum of Lapland, Rovaniemi, Finland.
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2018 (English)In: Ecosphere, ISSN 2150-8925, E-ISSN 2150-8925, Vol. 9, no 4, article id e02192Article in journal (Refereed) Published
Abstract [en]

Odonate (damselfly and dragonfly) species richness and species occupancy frequency distributions (SOFD) were analysed in relation to geographical location in standing waters (lakes and ponds) in Fennoscandia, from southern Sweden to central Finland. In total, 46 dragonfly and damselfly species were recorded from 292 waterbodies. Species richness decreased to the north and increased with waterbody area in central Finland, but not in southern Finland or in Sweden. Species occupancy ranged from 1 up to 209 lakes and ponds. Over 50% of the species occurred in less than 10% of the waterbodies, although this proportion decreased to the north. In the southern lakes and ponds, none of the species occurred in all lakes, whereas in the north many species were present in all of the studied waterbodies. The dispersal ability of the species did not explain the observed species occupancy frequencies, but generalist species with a large geographical range occurred in a higher percentage of the waterbodies. At Fennoscandian scale, we found that the unimodal satellite pattern was predominant. However, at smaller scale, we found geographical variations in odonate species SOFD patterns. The most southern communities followed the unimodal satellite-dominant pattern, whereas in other regions communities fitted best with the bimodal core - satellite patterns. It seems that the richer species pool in the southern locations, and the larger distribution range of the northern species, skewed the unimodal pattern into a bimodal satellite dominant pattern. © 2018 The Authors.

Place, publisher, year, edition, pages
Washington: Ecological Society of America , 2018. Vol. 9, no 4, article id e02192
Keywords [en]
Core-satellite species patterns, damselfly, dragonfly, freshwater lake, pond, Odonata, species richness
National Category
Ecology
Identifiers
URN: urn:nbn:se:hh:diva-36459DOI: 10.1002/ecs2.2192Scopus ID: 2-s2.0-85046004563OAI: oai:DiVA.org:hh-36459DiVA, id: diva2:1191243
Note

This study was supported by Finnish Biodiversity Research Programme (FIBRE), the Academy of Finland (JuS) and Ministry of Environment (JuS), Maj and Tor Nessling Foundation (JuS), the Finnish Cultural Foundation (Häme) (JSu), the Finnish Entomological Society (JSa), and Kone Foundation (ME) for financing our study. This study was funded by Academy of Finland: Finnish Centre of Excellence Programme (2000–2005).

Available from: 2018-03-16 Created: 2018-03-16 Last updated: 2018-06-12Bibliographically approved

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Sahlén, Göran

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