caa a22 4500 469098457 CHVBK 20180323133038.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00317700 doi (NATIONALLICENCE)springer-10.1007/BF00317700 Predator: non-predator ratios in beetle assemblages [Elektronische Daten] [Kevin Gaston, Philip Warren, Peter Hammond] Summary: In common with samples from less taxonomically constrained studies, significant correlations exist between the numbers of predatory and non-predatory species in assemblages of terrestrial beetles. Under logarithmic transformation the relationship can be described reasonably well by a straight line. Explanations for predator: non-predator relationships based on the dynamics of trophic interactions (e.g. competition for prey types or enemy-free space) seem insufficient to explain this pattern, because within beetle assemblages the necessary interactions are so few. Of other proposed determinants, those based on the relationship of local and regional species pools, on energetics, or on non-trophic factors seem the most plausible candidates for explaining proportionality amongst beetles. Much of the deviation from the overall pattern can be accounted for by sampling method and latitude. Temperate samples have a higher proportion of predatory species than tropical, whilst litter and pitfall trap samples have higher proportions of predatory species than Malaise trap and fogging samples. Springer-Verlag, 1992 Coleoptera nationallicence Predator-prey ratios nationallicence Trophic structure nationallicence Gaston Kevin Department of Entomology, The Natural History Museum, Cromwell Road, SW7 5BD, London, UK aut Warren Philip Department of Animal and Plant Sciences, The University of Sheffield, PO Box 601, S10 2UQ, Sheffield, UK aut Hammond Peter Department of Entomology, The Natural History Museum, Cromwell Road, SW7 5BD, London, UK aut Oecologia Springer-Verlag 90/3(1992-06-01), 417-421 0029-8549 90:3<417 1992 90 442 https://doi.org/10.1007/BF00317700 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317700 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gaston Kevin Department of Entomology, The Natural History Museum, Cromwell Road, SW7 5BD, London, UK aut NATIONALLICENCE 700 1- Warren Philip Department of Animal and Plant Sciences, The University of Sheffield, PO Box 601, S10 2UQ, Sheffield, UK aut NATIONALLICENCE 700 1- Hammond Peter Department of Entomology, The Natural History Museum, Cromwell Road, SW7 5BD, London, UK aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 90/3(1992-06-01), 417-421 0029-8549 90:3<417 1992 90 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer