caa a22 4500 469097779 CHVBK 20180323133036.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF00317626 doi (NATIONALLICENCE)springer-10.1007/BF00317626 Colonization of new habitats by earthworms [Elektronische Daten] [J. Marinissen, F. van den Bosch] Summary: In this paper a simple model is used to study the dispersal of earthworm populations into new habitats. Simple models do not describe processes accurately, but can help gain insight into the functioning of ecosystems or processes in ecosystems. Using information on reproduction, survival and dispersal at the level of the individual, the velocity of earthworm population expansion was calculated. Dispersal of earthworms can be active or passive. The parameters of active and passive dispersal were calculated from field experiments in one of the Dutch polders. Parameters of reproduction and survival were estimated from published data. The effects of processes at the individual level on the velocity of population expansion were studied for two species (Aporrectodea caliginosa and Lumbricus rubellus). The model shows that passive transport has a major influence on the velocity of population expansion, which is strongly increased even if this transport involves only a very small part of the population. At a high level of passive transport, however, death induced by this mode of dispersal can have a negative influence on population expansion. In the discussion it is indicated that optimising growth conditions of the earthworms might be the easiest way to promote population expansion. However, promoting dispersal by passive mechanisms can also be very important. Springer-Verlag, 1992 Earthworms nationallicence Active dispersal nationallicence Passive dispersal nationallicence Model nationallicence Marinissen J. Department of Soil Science and Geology, Agricultural University, P.O. Box 37, 6700 AA, Wageningen, The Netherlands aut van den Bosch F. Institute of Theoretical Biology, State University Leiden, P.O. Box 9516, 2300 RA, Leiden, The Netherlands aut Oecologia Springer-Verlag 91/3(1992-09-01), 371-376 0029-8549 91:3<371 1992 91 442 https://doi.org/10.1007/BF00317626 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317626 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marinissen J. Department of Soil Science and Geology, Agricultural University, P.O. Box 37, 6700 AA, Wageningen, The Netherlands aut NATIONALLICENCE 700 1- van den Bosch F. Institute of Theoretical Biology, State University Leiden, P.O. Box 9516, 2300 RA, Leiden, The Netherlands aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 91/3(1992-09-01), 371-376 0029-8549 91:3<371 1992 91 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer