Northampton Electronic Collection of Theses and Research

Effects of climate on pollination networks in the West Indies

Gonzalez, A., Dalsgaard, B., Ollerton, J., Timmermann, A., Olesen, J., Andersen, L. and Tossas, A. (2009) Effects of climate on pollination networks in the West Indies. Journal of Tropical Ecology. 25(5), pp. 493-506. 0266-4674.

Item Type: Article
Abstract: We studied the effect of climate on the plant-pollinator communities in the West Indies. We constructed plots of 200 m × 5 m in two distinct habitats on the islands of Dominica, Grenada and Puerto Rico (total of six plots) and recorded visitors to all plant species in flower. In total we recorded 447 interactions among 144 plants and 226 pollinator species. Specifically we describe how rainfall and temperature affect proportional richness and importance of the different pollinator functional groups. We used three measures of pollinator importance: number of interactions, number of plant species visited and betweenness centrality. Overall rainfall explained most of the variation in pollinator richness and relative importance. Bird pollination tended to increase with rainfall, although not significantly, whereas insects were significantly negatively affected by rainfall. However, the response among insect groups was more complex; bees were strongly negatively affected by rainfall, whereas dipterans showed similar trends to birds. Bird, bee and dipteran variation along the climate gradient can be largely explained by their physiological capabilities to respond to rainfall and temperature, but the effect of climate on other insect pollinator groups was more obscure. This study contributes to the understanding of how climate may affect neotropical plant-pollinator communities
Uncontrolled Keywords: bees; birds; betweenness centrality; Diptera; functional groups; insects; plant–animal interactions; mutualisms; rainfall; temperature
Subjects: Q Science > QK Botany > QK926 Pollination
Q Science > QC Physics > QC980 Climatology and weather
Q Science > QK Botany > QK900 Plant ecology
Creators: Gonzalez, Ana, Dalsgaard, Bo, Ollerton, Jeff, Timmermann, Allan, Olesen, Jens, Andersen, Laila and Tossas, Adrianne
Publisher: Cambridge University Press
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > School of Applied Sciences (to 2009) > Environmental Science (to 2009)
Date: 31 July 2009
Date Type: Publication
Page Range: pp. 493-506
Journal or Publication Title: Journal of Tropical Ecology
Volume: 25
Number: 5
Language: English
ISSN: 0266-4674
Status: Published / Disseminated

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