Abstract:
:We modeled the dynamics of a metapopulation of the land snail Arianta arbustorum in north-eastern Switzerland to investigate the effect of population subdivision on the persistence of a land snail metapopulation and to analyze the interaction between spatial factors, population subdivision, and catastrophes. We developed a spatially structured, stochastic, age-structured metapopulation model with field data from previous studies on the metapopulation in Switzerland and experimental and meteorological data. The model incorporated distance-dependent dispersal through stream banks, correlated environmental fluctuations, and catastrophes resulting from heavy rains. The results point to various complex interactions among factors involved in metapopulation dynamics and suggest that in some cases population subdivision may act to decrease threats from environmental fluctuations and catastrophes.
journal_name
Oecologiajournal_title
Oecologiaauthors
Akçakaya HR,Baur Bdoi
10.1007/BF00330010subject
Has Abstractpub_date
1996-03-01 00:00:00pages
475-483issue
4eissn
0029-8549issn
1432-1939pii
10.1007/BF00330010journal_volume
105pub_type
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