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Nematode assemblages from the moss Hypnum cupressiforme Hedw. growing on different substrates in a balkanic durmast oak forest (Quercus dalechampii Ten.) on Mount Vitosha, Bulgaria

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For more content, see Nematologica.

Species and generic composition, trophic structure and some ecological parameters of nematode assemblages from the moss, Hypnum cupressiforme Hedw., in a durmast oak (Quercus dalechampii Ten.) forest were studied on three substrates (soil, stone and tree trunks). Nematode abundance was very variable between samples and substrates. Nematode assemblages varied in species composition but were similar in generic composition, diversity and trophic group structure. Bacterial feeders were the most abundant, frequent and diverse trophic group, while the proportion of omnivorous and predatory nematodes was remarkably low, i.e., the nematode assemblages present can be characterised as of the 'detritus foodweb' type. No clear substrate-dependent patterns in the distribution of single species were found, with the exception of Chiloplectus andrassyi which was typical and abundant for mosses growing on stones.

La composition spécifique et générique, la structure trophique et quelques paramètres écologiques des communautés de nématodes vivant dans la mousse Hypnum cupressiforme Hedw. poussant dans une forêt de chênes (Quercus dalechampii Ten.) ont été étudiés sur trois substrats: sol, rochers et troncs d'arbres. L'abondance des nématodes variait fortement suivant l'échantillon et le substrat. Les communautés de nématodes présentaient une composition spécifique variable, mais étaient très semblables en ce qui concerne la composition générique, la diversité et la structure des groupes trophiques. Les bactérivores représentaient le groupe trophique le plus abondant, fréquent et diversifié, tandis que la proportion des nématodes omnivores et prédateurs était remarquablement faible, c'est à-dire que les communautés de nématodes présentes peuvent être considérées du type 'réseau détritivore'. Aucun modèle net de dépendance envers le substrat n'a été observé dans la répartition des espèces à l'exception de Chiloplacus andrassyi, typique et abondant dans les mousses poussant sur les rochers.

Affiliations: 1: Department of Biodiversity, Central Laboratory of General Ecology, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113 Sofia, Bulgaria

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/content/journals/10.1163/156854100509132
2000-05-15
2016-12-10

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