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The robustness of pollination networks to the loss of species and interactions: a quantitative approach incorporating pollinator behaviour.

Kaiser-Bunbury, Christopher N. and Muff, Stefanie and Memmott, Jane and Müller, Christine B. and Caflisch, Amedeo (2010):
The robustness of pollination networks to the loss of species and interactions: a quantitative approach incorporating pollinator behaviour.
In: Ecology letters, pp. 442-52, 13, (4), ISSN 1461-0248,
[Article]

Abstract

Species extinctions pose serious threats to the functioning of ecological communities worldwide. We used two qualitative and quantitative pollination networks to simulate extinction patterns following three removal scenarios: random removal and systematic removal of the strongest and weakest interactors. We accounted for pollinator behaviour by including potential links into temporal snapshots (12 consecutive 2-week networks) to reflect mutualists' ability to 'switch' interaction partners (re-wiring). Qualitative data suggested a linear or slower than linear secondary extinction while quantitative data showed sigmoidal decline of plant interaction strength upon removal of the strongest interactor. Temporal snapshots indicated greater stability of re-wired networks over static systems. Tolerance of generalized networks to species extinctions was high in the random removal scenario, with an increase in network stability if species formed new interactions. Anthropogenic disturbance, however, that promote the extinction of the strongest interactors might induce a sudden collapse of pollination networks.

Item Type: Article
Erschienen: 2010
Creators: Kaiser-Bunbury, Christopher N. and Muff, Stefanie and Memmott, Jane and Müller, Christine B. and Caflisch, Amedeo
Title: The robustness of pollination networks to the loss of species and interactions: a quantitative approach incorporating pollinator behaviour.
Language: English
Abstract:

Species extinctions pose serious threats to the functioning of ecological communities worldwide. We used two qualitative and quantitative pollination networks to simulate extinction patterns following three removal scenarios: random removal and systematic removal of the strongest and weakest interactors. We accounted for pollinator behaviour by including potential links into temporal snapshots (12 consecutive 2-week networks) to reflect mutualists' ability to 'switch' interaction partners (re-wiring). Qualitative data suggested a linear or slower than linear secondary extinction while quantitative data showed sigmoidal decline of plant interaction strength upon removal of the strongest interactor. Temporal snapshots indicated greater stability of re-wired networks over static systems. Tolerance of generalized networks to species extinctions was high in the random removal scenario, with an increase in network stability if species formed new interactions. Anthropogenic disturbance, however, that promote the extinction of the strongest interactors might induce a sudden collapse of pollination networks.

Journal or Publication Title: Ecology letters
Volume: 13
Number: 4
Divisions: 10 Department of Biology
10 Department of Biology > Synthetic Ecological Networks
Date Deposited: 08 Sep 2014 10:14
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