Structure and abundance of arachnid communities in Scots and lodgepole pine plantations |
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| Institution: | 1. Population Biology, School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK;2. Department of Biology, Imperial College at Silwood Park, Ascot, Berkshire, SL5 7PY, UK;1. INIA-CIFOR, Ctra A Coruña km 7.5, 28040 Madrid, Spain;2. INRA/AgroParisTech, UMR 1092 LERFoB, 54000 Nancy, France;3. iuFOR INIA-UVa, Spain;1. Institute of Systematics and Ecology of Animals, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia;2. Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Ekaterinburg, Russia;1. Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan;2. Research and Development Department, Fumakilla Limited, Hatsukaichi, Hiroshima, Japan;3. Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan;4. Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan |
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| Abstract: | Between April and September 1994, six plots within Aberfoyle Forest in Scotland, three of Scots (Pinus sylvestris) and three of lodgepole pine (Pinus contorta), were surveyed for spiders and harvestmen, as these are predators of several forest invertebrate pests.A total of 64 species of spider were trapped in Scots and lodgepole pine; 56 in Scots pine and 32 in Lodgepole pine. The most abundant spiders, both in Scots and Lodgepole pine, were Linyphiidae.Scots pine plots were floristically more diverse and structurally more complex than lodgepole pine plots. More species of spiders and harvestmen (midsummer only) were found at ground level in Scots pine than lodgepole pine plots. More species and a greater numbers of spiders were found in the canopy of Scots pine than in that of lodgepole pine. However, no differences in the abundance of harvestmen were found between the canopies of Scots and lodgepole pine. Spider species diversity was greatest in Scots pine. |
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