Northampton Electronic Collection of Theses and Research

Pollination networks and functional specialization: a test using Lesser Antillean plant–hummingbird assemblages

Dalsgaard, B., Gonzalez, A., Olesen, J., Timmermann, A., Andersen, L. and Ollerton, J. (2008) Pollination networks and functional specialization: a test using Lesser Antillean plant–hummingbird assemblages. Oikos. 117(5), pp. 789-793. 1600-0706.

Item Type: Article
Abstract: Network analysis has in recent years improved our understanding of pollination systems. However, there is very little information about how functionally specialized plants and pollinators interact directly and indirectly in pollination networks. We have developed a parameter, Functional specialization index, to quantify functional specialization in pollination networks. Using this parameter, we examined whether different sized hummingbirds visit a distinct set of flowers in five hummingbird-pollinated plant assemblages from the Lesser Antilles, obtaining a simple relationship between hummingbird body size, network parameter and ecological function. In the Lesser Antilles, functionally specialized hummingbird pollination is distinct for plant species pollinated by the largest hummingbird species, whereas the pollination niche gradually integrates with the insect pollinator community as hummingbird body size decreases. The network approach applied in this study can be used to validate functional specialization and community-level interdependence between plants and pollinators, and it is therefore useful for evaluating and predicting plant resilience to pollinator loss, presently a global concern
Subjects: Q Science > QK Botany > QK926 Pollination
Q Science > QL Zoology > QL671 Birds > QL696 Hummingbirds
Creators: Dalsgaard, Bo, Gonzalez, Ana, Olesen, Jens, Timmermann, Allan, Andersen, Laila and Ollerton, Jeff
Publisher: Nordic Ecological Society
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > School of Applied Sciences (to 2009) > Environmental Science (to 2009)
Date: May 2008
Date Type: Publication
Page Range: pp. 789-793
Journal or Publication Title: Oikos
Volume: 117
Number: 5
Language: English
ISSN: 1600-0706
Status: Published / Disseminated
Refereed: Yes

Actions (login required)

Edit Item Edit Item