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Bumble Bee Niche Overlap Along an Elevation Gradient : = How Traits Can Inform Novel Competitive Pressures Under Climate Change.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Bumble Bee Niche Overlap Along an Elevation Gradient :/
Reminder of title:	How Traits Can Inform Novel Competitive Pressures Under Climate Change.
Author:	Barthell, Kaitlyn Marie.
Description:	1 online resource (50 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-03.
Contained By:	Masters Abstracts International85-03.
Subject:	Ecology. -
Online resource:	click for full text (PQDT)
ISBN:	9798380362290

Bumble Bee Niche Overlap Along an Elevation Gradient : = How Traits Can Inform Novel Competitive Pressures Under Climate Change.
Barthell, Kaitlyn Marie.

Bumble Bee Niche Overlap Along an Elevation Gradient :How Traits Can Inform Novel Competitive Pressures Under Climate Change. - 1 online resource (50 pages)

Source: Masters Abstracts International, Volume: 85-03.

Thesis (M.A.)--University of Colorado at Boulder, 2023.

Includes bibliographical references

Climate change-induced range shifts can disrupt interactions among species by moving them in and out of ecological communities. These disruptions can include impacts on competition for shared resources. Bumble bees (Bombus spp.) are important pollinators shifting their range upwards in elevation in response to climate change. These shifts could lead to altered competition among species and threaten co-existence. These impacts are particularly worrying at the tops of mountains where bumble bees are "trapped" and can no longer move up to higher elevations to track climate change. To better understand this issue, we investigated changes in diet niche overlap among bumble bee species along a 2296m elevation gradient in the southern Rocky Mountains. Additionally, we investigated how morphological and phenological traits impact diet composition (flower species visited) among bumble bee species and explored how the continued upward movement of bumble bee species under climate change into the mountaintop may affect trait overlap of newly co-occurring species. We found that diet niche overlap among bumble bee species increased with elevation. We also found that differences in morphological and phenological traits (body size, tongue length, date of activity) were correlated with differences in diet composition among bumble bee species. Finally, we described how the movement of bumble bee species from lower elevations into the mountain top would lead to increased trait overlap and likely more species sharing similar flowers. These shifts could have implications for future competition for resident high-elevation species on mountaintops and exacerbate the effects of climate change on high-elevation bumble bees.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380362290Subjects--Topical Terms:

575279
Ecology.
Subjects--Index Terms:

AlpineIndex Terms--Genre/Form:

554714
Electronic books.

Bumble Bee Niche Overlap Along an Elevation Gradient : = How Traits Can Inform Novel Competitive Pressures Under Climate Change.
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520 $a Climate change-induced range shifts can disrupt interactions among species by moving them in and out of ecological communities. These disruptions can include impacts on competition for shared resources. Bumble bees (Bombus spp.) are important pollinators shifting their range upwards in elevation in response to climate change. These shifts could lead to altered competition among species and threaten co-existence. These impacts are particularly worrying at the tops of mountains where bumble bees are "trapped" and can no longer move up to higher elevations to track climate change. To better understand this issue, we investigated changes in diet niche overlap among bumble bee species along a 2296m elevation gradient in the southern Rocky Mountains. Additionally, we investigated how morphological and phenological traits impact diet composition (flower species visited) among bumble bee species and explored how the continued upward movement of bumble bee species under climate change into the mountaintop may affect trait overlap of newly co-occurring species. We found that diet niche overlap among bumble bee species increased with elevation. We also found that differences in morphological and phenological traits (body size, tongue length, date of activity) were correlated with differences in diet composition among bumble bee species. Finally, we described how the movement of bumble bee species from lower elevations into the mountain top would lead to increased trait overlap and likely more species sharing similar flowers. These shifts could have implications for future competition for resident high-elevation species on mountaintops and exacerbate the effects of climate change on high-elevation bumble bees.
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