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Exploring life forms for linking orthopteran assemblage and grassland plant community / Rocco Labadessa in Hacquetia, vol 14 n° 1 (June 2015)  

Public [article]  inHacquetia > vol 14 n° 1 (June 2015) . - pp 33 - 42 Titre : Exploring life forms for linking orthopteran assemblage and grassland plant community Type de document : Article/Communication Auteurs : Rocco Labadessa, Auteur ; Luigi Forte, Auteur ; Paola Mairota, Auteur Année de publication : 2015 Article en page(s) : pp 33 - 42 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] état de conservation [Termes IGN] herbe [Termes IGN] Insecta [Termes IGN] microhabitat [Termes IGN] prairie [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) Orthopterans are well known to represent the majority of insect biomass in many grassland ecosystems. However, the verification of a relationship between the traditional descriptors of orthopteran assemblage structure and plant community patterns is not straightforward. We explore the usefulness of the concept of life forms to provide insights on such ecosystem level relationship. For this purpose, thirty sample sites in semi-natural calcareous grasslands were classified according to the relative proportion of dominant herbaceous plant life forms. Orthopteran species were grouped in four categories, based on the Bei-Bienko’s life form categorization. The association among plant communities, orthopteran assemblages and environmental factors was tested by means of canonical correspondence analysis. Orthoptera groups were found to be associated with distinct plant communities, also indicating the effect of vegetation change on orthopteran assemblages. In particular, geobionta species were associated with all the most disturbed plant communities, while chortobionta and thamnobionta seemed to be dependent on better preserved grassland types. Therefore, the use of life forms could help informing on the relationships of orthopteran assemblages with grassland conservation state. Information on such community relationships at the local scale could also assist managers in the interpretation of habitat change maps in terms of biodiversity changes. Numéro de notice : A2015--003 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/FORET Nature : Article DOI : 10.1515/hacq-2015-0012 En ligne : http://dx.doi.org/10.1515/hacq-2015-0012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80443 [article]