Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 388260
Title Effects of stage specific habitat use; implications of complex life cycles on population management
Author(s) Wolfshaar, K.E. van de; Hille Ris Lambers, R.
Source In: Proceedings of the Symposium on Drivers of regime shifts in aquatic systems: case-specific or universal?, 24 September, 2009, Wageningen, The Netherlands. - Wageningen, Netherlands : - p. 2 - 2.
Event Wageningen, Netherlands : Drivers of regime shifts in aquatic systems: case-specific or universal?, Wageningen, The Netherlands, 2009-09-24
Department(s) Aquaculture and Fisheries
Wageningen Marine Research
Publication type Abstract in scientific journal or proceedings
Publication year 2009
Abstract Species exhibiting ontogenetic diet shifts often change habitat between adult and juvenile life stages. Within stage processes such as competition or mortality may affect other life stages in different habitats. In this paper we study the effect of different processes on specific stages on a consumer population. A consumer-resource model is used, and stage specific habitat productivity, mortality and survival are varied. Our results indicate that for intermediate differences in habitat productivity juvenile or adult biomass dominated states can occur alternatively. When adult and juvenile habitat are more different a single equilibrium exist. Increased mortality decreases the scope for alternative stable states. Juvenile mortality in particular is more detrimental for population persistence than background or adult mortality, especially in combination with relative low productivity in the adult habitat. These findings are of interest when managing fish stock and implementing marine protected areas.
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