Effects of forest-dune ecotone management on the endangered heath grasshopper, Chorthippus vagans (Orthoptera: Acrididae).
Identifieur interne : 000610 ( PubMed/Corpus ); précédent : 000609; suivant : 000611Effects of forest-dune ecotone management on the endangered heath grasshopper, Chorthippus vagans (Orthoptera: Acrididae).
Auteurs : A. Hochkirch ; A-C G Rtner ; T. BrandtSource :
- Bulletin of entomological research [ 0007-4853 ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- methods : Conservation of Natural Resources.
- physiology : Grasshoppers.
- Animals, Behavior, Animal, Ecosystem, Population Density.
Abstract
Dry, oligotrophic ecosystems are highly threatened in Europe due to massive changes in land use and eutrophication. The conservation of these xeric habitats has received much attention, whereas the ecotones between xeric habitats and other habitat types are often disregarded. One species which mainly inhabits the transition zone between pine forests and adjacent xeric habitats is the heath grasshopper, Chorthippus vagans. This species is endangered in large parts of Europe. One of the largest populations in northern Germany is found on a degraded inland dune near Hanover. This population is threatened by dense growth of deciduous trees and litter accumulation. We analyzed changes in the distribution of this population after the implementation of conservation measures (thinning out the forest and removal of leaf litter). Moreover, we examined dispersal distances of the species in order to assess its colonization potential. We also studied the microhabitat preferences of C. vagans to assess key factors influencing its local distribution. Our data show a substantial growth in population size, which might be a consequence of the conservation measures. New patches on the dune were colonized, promoting dispersal between the subpopulations. We propose that restoration of forest-dune ecotones should be considered more often in landscape planning and conservation management.
DOI: 10.1017/S0007485308005762
PubMed: 18423078
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Hochkirch</name><affiliation><nlm:affiliation>University of Osnabrück, Department of Biology/Chemistry, Division of Ecology, Barbarastrasse 13, Osnabrück. hochkirch@uni-trier.de</nlm:affiliation></affiliation></author><author><name sortKey="G Rtner, A C" sort="G Rtner, A C" uniqKey="G Rtner A" first="A-C" last="G Rtner">A-C G Rtner</name></author><author><name sortKey="Brandt, T" sort="Brandt, T" uniqKey="Brandt T" first="T" last="Brandt">T. Brandt</name></author></analytic><series><title level="j">Bulletin of entomological research</title><idno type="ISSN">0007-4853</idno><imprint><date when="2008" type="published">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Behavior, Animal</term><term>Conservation of Natural Resources (methods)</term><term>Ecosystem</term><term>Grasshoppers (physiology)</term><term>Population Density</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Conservation of Natural Resources</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Grasshoppers</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Behavior, Animal</term><term>Ecosystem</term><term>Population Density</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Dry, oligotrophic ecosystems are highly threatened in Europe due to massive changes in land use and eutrophication. The conservation of these xeric habitats has received much attention, whereas the ecotones between xeric habitats and other habitat types are often disregarded. One species which mainly inhabits the transition zone between pine forests and adjacent xeric habitats is the heath grasshopper, Chorthippus vagans. This species is endangered in large parts of Europe. One of the largest populations in northern Germany is found on a degraded inland dune near Hanover. This population is threatened by dense growth of deciduous trees and litter accumulation. We analyzed changes in the distribution of this population after the implementation of conservation measures (thinning out the forest and removal of leaf litter). Moreover, we examined dispersal distances of the species in order to assess its colonization potential. We also studied the microhabitat preferences of C. vagans to assess key factors influencing its local distribution. Our data show a substantial growth in population size, which might be a consequence of the conservation measures. New patches on the dune were colonized, promoting dispersal between the subpopulations. We propose that restoration of forest-dune ecotones should be considered more often in landscape planning and conservation management.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">18423078</PMID><DateCreated><Year>2008</Year><Month>10</Month><Day>01</Day></DateCreated><DateCompleted><Year>2008</Year><Month>11</Month><Day>18</Day></DateCompleted><DateRevised><Year>2008</Year><Month>10</Month><Day>01</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0007-4853</ISSN><JournalIssue CitedMedium="Print"><Volume>98</Volume><Issue>5</Issue><PubDate><Year>2008</Year><Month>Oct</Month></PubDate></JournalIssue><Title>Bulletin of entomological research</Title><ISOAbbreviation>Bull. Entomol. 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This population is threatened by dense growth of deciduous trees and litter accumulation. We analyzed changes in the distribution of this population after the implementation of conservation measures (thinning out the forest and removal of leaf litter). Moreover, we examined dispersal distances of the species in order to assess its colonization potential. We also studied the microhabitat preferences of C. vagans to assess key factors influencing its local distribution. Our data show a substantial growth in population size, which might be a consequence of the conservation measures. New patches on the dune were colonized, promoting dispersal between the subpopulations. 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