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The Roles of Forest Fragments and an...

Minnick, Michael John.

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The Roles of Forest Fragments and an Invasive Shrub in Structuring Native Bee Communities and Pollination Services in Intensive Agricultural Landscapes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Roles of Forest Fragments and an Invasive Shrub in Structuring Native Bee Communities and Pollination Services in Intensive Agricultural Landscapes./
作者:	Minnick, Michael John.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	216 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-10, Section: B.
Contained By:	Dissertations Abstracts International81-10B.
標題:	Ecology. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27911317
ISBN:	9781658424509

The Roles of Forest Fragments and an Invasive Shrub in Structuring Native Bee Communities and Pollination Services in Intensive Agricultural Landscapes.
Minnick, Michael John.

The Roles of Forest Fragments and an Invasive Shrub in Structuring Native Bee Communities and Pollination Services in Intensive Agricultural Landscapes. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 216 p.

Source: Dissertations Abstracts International, Volume: 81-10, Section: B.

Thesis (Ph.D.)--Miami University, 2020.

This item must not be sold to any third party vendors.

This dissertation examines how an invasive woody plant, Lonicera maackii, temporally and spatially structures native bee communities of forest-edge habitat in agricultural landscapes. In Chapter 1, I measured bee species composition and pollination services ≤200 m from isolated forest patches in response to L. maackii flower removals. Removing flowers released a subset of small-bodied bees and increased pollination services after two years. Pollination services provisioned by large-bodied and generalist bee species (e.g. Bombus spp) increased when nearby plants were adjacent to intact L. maackii flowers. Findings suggest that L. maackii flowers suppress one component of the bee community and attract another to the forest patch that increases usage of the adjacent crop fields. In Chapter 2, I compared two components of the bee community and their responses to L. maackii density, floral resources of the forest patch, and the surrounding landscape. Bees sampled in pan traps were typically small, specialized, and responded to local patch features. Bees sampled in vane traps were larger in body size, social, and responded to landscape composition 3 km from the forest patch. These findings suggest that L. maackii floral resources support weaker foragers within the forest patch as well as larger bees that forage throughout the landscape. Both components of the bee community responded to tree community composition and were vertically stratified in the tree canopy. In Chapter 3, I measured bee diversity and community composition at different vertical strata in response to L. maackii density and flowering period as well as floral resource availability of woody plants. I found that L. maackii supports a component of the vertically stratified bee community which changes interactions with floral resources of the native woody vegetation at different vertical strata. Collectively, my studies demonstrate that L. maackii structures forest-edge bee communities through mechanisms involving functional and life history traits of individual bee species. Therefore, in my Conclusion Chapter, I developed a synthetic model that assigned an Agricultural Landscape Response Index for Bees (ALRIB) value between 0 and 1 to bees of each species that corresponds with their likelihood of responding to the forest patch as an island or as one land cover type within a broader mosaic of different resources. I conclude that L. maackii invasion into forest fragments within intensively managed agricultural landscapes filters the bee community in favor of species that use its floral resources and exhibits an overall homogenizing effect on species diversity.

ISBN: 9781658424509Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Native

The Roles of Forest Fragments and an Invasive Shrub in Structuring Native Bee Communities and Pollination Services in Intensive Agricultural Landscapes.
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500 $a Source: Dissertations Abstracts International, Volume: 81-10, Section: B.
500 $a Advisor: Crist, Thomas.
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520 $a This dissertation examines how an invasive woody plant, Lonicera maackii, temporally and spatially structures native bee communities of forest-edge habitat in agricultural landscapes. In Chapter 1, I measured bee species composition and pollination services ≤200 m from isolated forest patches in response to L. maackii flower removals. Removing flowers released a subset of small-bodied bees and increased pollination services after two years. Pollination services provisioned by large-bodied and generalist bee species (e.g. Bombus spp) increased when nearby plants were adjacent to intact L. maackii flowers. Findings suggest that L. maackii flowers suppress one component of the bee community and attract another to the forest patch that increases usage of the adjacent crop fields. In Chapter 2, I compared two components of the bee community and their responses to L. maackii density, floral resources of the forest patch, and the surrounding landscape. Bees sampled in pan traps were typically small, specialized, and responded to local patch features. Bees sampled in vane traps were larger in body size, social, and responded to landscape composition 3 km from the forest patch. These findings suggest that L. maackii floral resources support weaker foragers within the forest patch as well as larger bees that forage throughout the landscape. Both components of the bee community responded to tree community composition and were vertically stratified in the tree canopy. In Chapter 3, I measured bee diversity and community composition at different vertical strata in response to L. maackii density and flowering period as well as floral resource availability of woody plants. I found that L. maackii supports a component of the vertically stratified bee community which changes interactions with floral resources of the native woody vegetation at different vertical strata. Collectively, my studies demonstrate that L. maackii structures forest-edge bee communities through mechanisms involving functional and life history traits of individual bee species. Therefore, in my Conclusion Chapter, I developed a synthetic model that assigned an Agricultural Landscape Response Index for Bees (ALRIB) value between 0 and 1 to bees of each species that corresponds with their likelihood of responding to the forest patch as an island or as one land cover type within a broader mosaic of different resources. I conclude that L. maackii invasion into forest fragments within intensively managed agricultural landscapes filters the bee community in favor of species that use its floral resources and exhibits an overall homogenizing effect on species diversity.
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653 $a Invasive plant
653 $a Lonicera maackii
653 $a Amur honeysuckle
653 $a Forest-edge habitat
653 $a Landscape
653 $a ALRIB
653 $a Island vs mosaic
653 $a Honeysuckle density
653 $a Canopy strata
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