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      Wolf Spider (Araneae: Lycosidae) Assemblages of a Deciduous Forest in North-Western Romania

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          Abstract

          Abstract

          Wolf spider (Araneae: Lycosidae) assemblages were studied in a deciduous forest from a Natura 2000 site in north-western Romania. A number of 1661 adults belonging to 19 species were collected by pitfall trapping. The highest abundance was achieved by Pardosa alacris in all of the three analyzed sites (marsh, forest edge, forest interior), followed by Trochosa spinipalpis in the marsh and forest, Trochosa terricola in the edge and forest, Alopecosa pulverulenta, Piratula hygrophila in the marsh and Arctosa lutetiana in the edge. Both the observed and estimated species richness was greatest in the marsh, while the inventory completeness was highest in the edge. The presence of some rare species ( Hygrolycosa rubrofasciata, Pardosa maisa) along with the different composition of the wolf spider communities highlight the need of conserving the original (micro)habitat heterogeneity of natural forests for ensure the survival of diverse ground-dwelling spider assemblages.

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          Measuring Biological Diversity

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            Biodiversity differences between managed and unmanaged forests: meta-analysis of species richness in Europe.

            Past and present pressures on forest resources have led to a drastic decrease in the surface area of unmanaged forests in Europe. Changes in forest structure, composition, and dynamics inevitably lead to changes in the biodiversity of forest-dwelling species. The possible biodiversity gains and losses due to forest management (i.e., anthropogenic pressures related to direct forest resource use), however, have never been assessed at a pan-European scale. We used meta-analysis to review 49 published papers containing 120 individual comparisons of species richness between unmanaged and managed forests throughout Europe. We explored the response of different taxonomic groups and the variability of their response with respect to time since abandonment and intensity of forest management. Species richness was slightly higher in unmanaged than in managed forests. Species dependent on forest cover continuity, deadwood, and large trees (bryophytes, lichens, fungi, saproxylic beetles) and carabids were negatively affected by forest management. In contrast, vascular plant species were favored. The response for birds was heterogeneous and probably depended more on factors such as landscape patterns. The global difference in species richness between unmanaged and managed forests increased with time since abandonment and indicated a gradual recovery of biodiversity. Clearcut forests in which the composition of tree species changed had the strongest effect on species richness, but the effects of different types of management on taxa could not be assessed in a robust way because of low numbers of replications in the management-intensity classes. Our results show that some taxa are more affected by forestry than others, but there is a need for research into poorly studied species groups in Europe and in particular locations. Our meta-analysis supports the need for a coordinated European research network to study and monitor the biodiversity of different taxa in managed and unmanaged forests.
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              The influence of variation in litter habitats on spider communities

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                Author and article information

                Journal
                entomologia
                Entomologia Generalis
                Journal of General and Applied Entomology - Zeitschrift für Allgemeine und Angewandte Entomologie
                entomologia
                Schweizerbart Science Publishers (Stuttgart, Germany http://www.schweizerbart.com/ mail@ 123456schweizerbart.de )
                0171-8177
                26 November 2015
                : 35
                : 3
                : 199-211
                Affiliations
                1Babeş-Bolyai University, Faculty of Biology and Geology, Department of Taxonomy and Ecology, Clinicilor str. 5–7, 400006 Cluj-Napoca, Romania 2Sapientia Hungarian University of Transylvania, Faculty of Sciences and Arts, Department of Environmental Sciences, Calea Turzii str. 4, 400193 Cluj-Napoca, Romania 3University of Oradea, Faculty of Sciences, Department of Biology, Universităţii str. 1, 410087 Oradea, Romania
                Author notes

                * Corresponding author: hajni_81@ 123456yahoo.com

                Article
                85165 0095
                10.1127/entomologia/2015/0095
                270210cc-5c72-4182-b38c-eafd4d2ec212
                Copyright © 2015 E. Schweizerbart´sche Verlagsbuchhandlung (Nägele u. Obermiller), Stuttgart
                History
                : 25 February 2014
                : 28 September 2014
                Page count
                Figures: 2, Tables: 2, Pages: 13
                Custom metadata
                1
                research_paper

                Entomology,Parasitology,Ecology,Pests, Diseases & Weeds
                seasonal activity,edge,Trochosa terricol, Thorell,Pardosa alacris (Koch),species richness,marsh,forest,Trochosa spinipalpis (Cambridge)

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