Ground spider communities in experimentally disturbed Mediterranean woodland habitats

The protected Mediterranean woodland habitats in Israel are undergoing tree encroachment, resulting
in loss of open patches with herbaceous vegetation. We suggested that this process results in a ground spider
communit
The protected Mediterranean woodland habitats in Israel are undergoing tree encroachment, resulting
in loss of open patches with herbaceous vegetation. We suggested that this process results in a ground spider
community dominated by shade-loving species. At three Mediterranean woodland sites located along a rainfall
gradient, we examined the effects on the ground-spider community of experimental removal of the woody vegetation
in 1000 m2 plots by cutting and overall plant biomass reduction by grazing and browsing by livestock. Pitfall
traps were placed in replicated plots of four treatments (control, cutting, grazing/browsing, and cutting together
with grazing/browsing) and in two different habitat patch types (open, woody). ANOVA and multivariate analyses
were performed on family abundance by treatment and habitat patch type. Tree-cutting reduced the number of
families in plots at two of the three sites. Grazing did not have a significant effect on the number of families or
on the ground spider community composition. The spider community of cut-woody patches was more similar to
that of open patches than to that of uncut woody patches. Most spider families separated along an axis of open
versus woody patches, with woody habitat families predominating at all sites. Families typical of open habitats
were positively associated with cut-woody patches as well. The overall effect on ground spider diversity of such
manipulations may depend on the scale of habitat changes.
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Metadaten
Author:Yael Lubin, Noa Angel, Nirit Assaf
URN:urn:nbn:de:hebis:30:3-266205
DOI:http://dx.doi.org/10.5431/aramit4010
ISSN:1081-4171
Parent Title (German):Arachnologische Mitteilungen
Publisher:Arachnologische Ges.
Place of publication:Nürnberg
Document Type:Article
Language:English
Date of Publication (online):2012/10/02
Year of first Publication:2011
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2012/10/02
Tag:diversity; family composition; patchiness
Volume:2011
Issue:40
Pagenumber:8
First Page:85
Last Page:93
Dewey Decimal Classification:590 Tiere (Zoologie)
595 Arthropoden (Gliederfüßer)
Sammlungen:Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:Arachnologische Mitteilungen, Heft 40 (2011)
Journal: Dazugehörige Zeitschrift anzeigen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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