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Structure and dynamics of a highly-invaded plant-pollinator network
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Stanko, Maria L.. Structure and dynamics of a highly-invaded plant-pollinator network. Retrieved from https://doi.org/doi:10.7282/T3KP817V

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TitleStructure and dynamics of a highly-invaded plant-pollinator network
NameStanko, Maria L. (author); Morin, Peter J. (chair); Handel, Steven (internal member); Lockwood, Julie (internal member); Winfree, Rachael (internal member); Bascompte, Jordi (outside member); Rutgers University; Graduate School - New Brunswick
Date Created2011
Other Date2011-10 (degree)
SubjectEcology and Evolution, Mutualism (Biology)
Extentv, 120 p. : ill.
DescriptionNetworks of mutualistic interactions such as those between plants and pollinators are characterized by weak, asymmetric interactions organized in a nested pattern, in which the community is anchored by a core of interactions among generalist species. This characteristic structure contributes to community stability and diversity but may be disrupted by invasion of the network by non-native species. I used a network approach to characterize the community of interactions in an old field in New Jersey in which a high proportion of the plant species were non-native. I described the entire plant-pollinator community at Hutcheson Memorial Forest (HMF) and asked whether this network displayed the characteristic structural properties of mutualistic networks. Next, I examined how the non-native subset of the plant community compared to the native subset in terms of their interactions with pollinators. Finally, I considered the temporal dynamics of the network for this community by addressing inter-annual and intra-annual changes in network structure and examining how the role of non-native plants changed through time. Despite the high proportion of non-native plants species in the community, network properties were consistent with those described for other mutualistic networks. Non-native plants were visited less than native plants, but interactions with pollinators were organized similarly for both groups of plants. Network structure was consistent between years but varied widely on a monthly scale. Variation in the role of non-native plants emerged when the network was examined intra-annually. Non-native plants were subordinate to natives in terms of their importance to the pollinator community during most of the flowering season, except during a lull in native floral abundance, when non-native plants became more important. Overall, non-native plants as a set displayed a similar range of generalization as the native plant community, suggesting that non-native plants are exploiting the same strategies for participation in the plant-pollinator community as native plants. The structure of mutualistic networks appears to promote assimilation on non-native species while remaining robust to changes which threaten the stability of the community.
NotePh.D.
NoteIncludes bibliographical references
Noteby Maria L. Stanko
Genretheses, ETD doctoral
Persistent URLhttps://doi.org/doi:10.7282/T3KP817V
Languageeng
CollectionGraduate School - New Brunswick Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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