Centre de documentation
scientifique

Diptera in clear-felling stumps like it dry / Mats Jonsell in Scandinavian journal of forest research, vol 34 n° 8 (August 2019)  

Public [article]  inScandinavian journal of forest research > vol 34 n° 8 (August 2019) . - pp 673 - 677 Titre : Diptera in clear-felling stumps like it dry Type de document : Article/Communication Auteurs : Mats Jonsell, Auteur ; Clémentine Ols , Auteur ; Jonas Victorsson, Auteur ; Sven Hellqvist, Auteur Année de publication : 2019 Projets : 1-Pas de projet / Article en page(s) : pp 673 - 677 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Betula (genre) [Termes IGN] bioénergie [Termes IGN] bois mort [Termes IGN] Coleoptera (ordre) [Termes IGN] coupe rase (sylviculture) [Termes IGN] diptère [Termes IGN] échantillonnage [Termes IGN] indice d'humidité [Termes IGN] Insecta [Termes IGN] Picea abies [Termes IGN] souche [Vedettes matières IGN] Ecologie forestière Résumé : (auteur) When stumps on clear cuts are harvested for bioenergy, retention of a share of them is recommended to mitigate environmental issues. To maximise benefits for the diversity of saproxylic beetles, retention should be done in dry positions. Saproxylic dipterans are usually thought to be associated with wetter wood substrates. We therefore hypothesised that dipterans would benefit from other recommendations. We tested that by rearing out insects from spruce and birch stumps sampled in clear fellings, and received a material of 866 individuals of 24 Diptera taxa. Among six Diptera species tested statistically, one was associated with dry stumps when comparing within spruce, and the total abundance of dipterans was higher in dry spruce stumps than in wet. No parameter (total species number, species number per stump, total abundances and abundances of individual species) showed a higher value for wet stumps than for dry. We conclude that there are several Diptera species that frequently use stumps, of which a large share was earlier regarded as very rare. For those, our hypothesis was falsified, as the affinities to dry stumps seem similar as for beetles and the same recommendations could be used. Numéro de notice : A2019-617 Affiliation des auteurs : LIF+Ext (2012-2019) Thématique : BIODIVERSITE/FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/02827581.2019.1663916 Date de publication en ligne : 16/09/2019 En ligne : https://doi.org/10.1080/02827581.2019.1663916 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95344 [article]