sensitivity of dragonflies to landscape structure differs between life-history groups

Contrasting life-history strategies of long versus short pre-reproductive phases are known in adult dragonflies (Odonata) of temperate regions. Because the long-phase species spend a longer time in terrestrial habitats such as grasslands or woodlands during their pre-reproductive phase, we hypothesi...

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Bibliographic Details
Published in:Landscape ecology 2008-02, Vol.23 (2), p.149-158
Main Authors: Kadoya, Taku, Suda, Shin-ichi, Tsubaki, Yoshitaka, Washitani, Izumi
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Aquatic insects
Biological and medical sciences
Biomedical and Life Sciences
Complex life cycle
Ecology
Environmental Management
Fragmentation
Functional group
Fundamental and applied biological sciences. Psychology
General aspects
Grasslands
Habitats
Insecta
Insects
Invertebrates
Landscape Ecology
Landscape/Regional and Urban Planning
Life cycles
Life history
Life Sciences
Nature Conservation
Odonata
Ponds
Research Article
Sustainable Development
Woodlands
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Summary:Contrasting life-history strategies of long versus short pre-reproductive phases are known in adult dragonflies (Odonata) of temperate regions. Because the long-phase species spend a longer time in terrestrial habitats such as grasslands or woodlands during their pre-reproductive phase, we hypothesized that long-phase species would be more sensitive to landscape structure than short-phase species. To test this hypothesis, we conducted periodic censuses of adult dragonflies at small man-made ponds. We compared the two above functional groups in terms of the degree to which species occurrence depended on landscape structure. The difference among the two groups was not significant, but occurrence of long-phase species tended to depend on landscape structure. Long-phase species responded to landscape structure at larger spatial scales and showed stronger spatial autocorrelation in their occurrence among sampling ponds than short-phase species.
ISSN:0921-2973
1572-9761
DOI:10.1007/s10980-007-9151-1