دورية أكاديمية
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Modeling population dynamics of solitary bees in relation to habitat quality

التفاصيل البيبلوغرافية
العنوان: Modeling population dynamics of solitary bees in relation to habitat quality
المؤلفون: K. Ulbrich, K. Seidelmann
المصدر: Web Ecology, Vol 2, Iss 1, Pp 57-64 (2001)
بيانات النشر: Copernicus Publications, 2001.
سنة النشر: 2001
المجموعة: LCC:Human ecology. Anthropogeography
LCC:Environmental sciences
LCC:Oceanography
LCC:Science
LCC:Biology (General)
LCC:Ecology
LCC:Microbiology
LCC:Physiology
LCC:Natural history (General)
LCC:General. Including nature conservation, geographical distribution
LCC:Zoology
LCC:Botany
مصطلحات موضوعية: Human ecology. Anthropogeography, GF1-900, Environmental sciences, GE1-350, Oceanography, GC1-1581, Science, Biology (General), QH301-705.5, Ecology, QH540-549.5, Microbiology, QR1-502, Physiology, QP1-981, Natural history (General), QH1-278.5, General. Including nature conservation, geographical distribution, QH1-199.5, Zoology, QL1-991, Botany, QK1-989
الوصف: To understand associations between habitat, individual behaviour, and population development of solitary bees we developed an individual-based model. This model is based on field observations of Osmia rufa (L) (Apoideae: Megachilidae) and describes population dynamics of solitary bees. Model rules are focused on maternal investment, in particular on the female’s individual decisions about sex and size of progeny. In the present paper, we address the effect of habitat quality on population size and sex ratio. We examine how food availability and the risk of parasitism influence long-term population development. It can be shown how population properties result from individual maternal investment which is described as a functional response to fluctuations of environmental conditions. We found that habitat quality can be expressed in terms of cell construction time. This interface factor influences the rate of open cell parasitism as the risk for a brood cell to be parasitized is positively correlated with the time of its construction. Under conditions of scarce food and under resulting long provision times even low parasitism rates lead to a high extinction risk of the population, whereas in rich habitats probabilities of extinction are low even for high rates of parasitism. For a given level of food and parasitism there is an optimum time for cell construction which minimizes the extinction risk of the population. Model results demonstrate that under fluctuating environmental conditions, decreasing habitat quality leads to a decrease in population size but also to rapid shifts in sex ratio.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2193-3081
1399-1183
Relation: http://www.web-ecol.net/2/57/2001/we-2-57-2001.pdf; https://doaj.org/toc/2193-3081; https://doaj.org/toc/1399-1183
DOI: 10.5194/we-2-57-2001
URL الوصول: https://doaj.org/article/3f85bae786b74292891a6af89c744d81
رقم الأكسشن: edsdoj.3f85bae786b74292891a6af89c744d81
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:21933081
13991183
DOI:10.5194/we-2-57-2001