Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient
Insect pollinators serve a critical role in maintaining plant biodiversity and are especially susceptible to changes within their environment. To study the possible effects of seasonal variation in temperature, as well as climatic temperature increase on the plant-pollinator community, the relations...
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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2022
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ftsprs:oai:DiVA.org:polar-8902 2023-05-15T12:59:46+02:00 Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient Svedin, Johan Per Michael 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8902 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8902 info:eu-repo/semantics/openAccess Arctic climate change Bombus Flower morphology Plant-pollinator trait-matching Ecology Ekologi Student thesis info:eu-repo/semantics/bachelorThesis text 2022 ftsprs 2022-12-07T23:35:30Z Insect pollinators serve a critical role in maintaining plant biodiversity and are especially susceptible to changes within their environment. To study the possible effects of seasonal variation in temperature, as well as climatic temperature increase on the plant-pollinator community, the relationship between bumblebee and flowering plant traits along an elevational gradient, representing warming-induced changes in plant community, were examined. Two hypotheses were tested; 1) if plant traits can predict visiting bumblebee proboscis length, and 2) if the relationship between plant traits and proboscis length is influenced by elevation, and the progression of the growing season. The study took place along an elevational gradient on Mt. Nuolja in Abisko National Park, Sweden. During surveys bumblebees were caught and measured. Flowers visited by captured bumblebees were collected, categorized by restrictiveness (i.e., whether or not the flower require a certain proboscis length, in order to access the nectar and pollen rewards) and floral traits measured (e.g., petal length). The results revealed that petal length was a significant predictor of bumblebee proboscis length, when taking restrictiveness into account. Furthermore, the relationship became weaker with increasing elevation for restrictive flowers but stronger for unrestrictive flowers. These findings show that trait-matching between bumblebees and flowers is an influential factor for flower selection and is affected by climatic temperature. This highlights the importance of considering individual-level traits when studying plant preference and creates a framework for assessing plant-pollinator networks. Future studies should examine additional traits that could explain the apparent size matching between unrestrictive flowers and proboscis. Bachelor Thesis Abisko Arctic Climate change Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) Abisko ENVELOPE(18.829,18.829,68.349,68.349) Arctic |
institution |
Open Polar |
collection |
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA) |
op_collection_id |
ftsprs |
language |
English |
topic |
Arctic climate change Bombus Flower morphology Plant-pollinator trait-matching Ecology Ekologi |
spellingShingle |
Arctic climate change Bombus Flower morphology Plant-pollinator trait-matching Ecology Ekologi Svedin, Johan Per Michael Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
topic_facet |
Arctic climate change Bombus Flower morphology Plant-pollinator trait-matching Ecology Ekologi |
description |
Insect pollinators serve a critical role in maintaining plant biodiversity and are especially susceptible to changes within their environment. To study the possible effects of seasonal variation in temperature, as well as climatic temperature increase on the plant-pollinator community, the relationship between bumblebee and flowering plant traits along an elevational gradient, representing warming-induced changes in plant community, were examined. Two hypotheses were tested; 1) if plant traits can predict visiting bumblebee proboscis length, and 2) if the relationship between plant traits and proboscis length is influenced by elevation, and the progression of the growing season. The study took place along an elevational gradient on Mt. Nuolja in Abisko National Park, Sweden. During surveys bumblebees were caught and measured. Flowers visited by captured bumblebees were collected, categorized by restrictiveness (i.e., whether or not the flower require a certain proboscis length, in order to access the nectar and pollen rewards) and floral traits measured (e.g., petal length). The results revealed that petal length was a significant predictor of bumblebee proboscis length, when taking restrictiveness into account. Furthermore, the relationship became weaker with increasing elevation for restrictive flowers but stronger for unrestrictive flowers. These findings show that trait-matching between bumblebees and flowers is an influential factor for flower selection and is affected by climatic temperature. This highlights the importance of considering individual-level traits when studying plant preference and creates a framework for assessing plant-pollinator networks. Future studies should examine additional traits that could explain the apparent size matching between unrestrictive flowers and proboscis. |
format |
Bachelor Thesis |
author |
Svedin, Johan Per Michael |
author_facet |
Svedin, Johan Per Michael |
author_sort |
Svedin, Johan Per Michael |
title |
Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
title_short |
Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
title_full |
Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
title_fullStr |
Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
title_full_unstemmed |
Individual trait matching of bumblebees (Bombus) and flowers along an environmental gradient |
title_sort |
individual trait matching of bumblebees (bombus) and flowers along an environmental gradient |
publisher |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8902 |
long_lat |
ENVELOPE(18.829,18.829,68.349,68.349) |
geographic |
Abisko Arctic |
geographic_facet |
Abisko Arctic |
genre |
Abisko Arctic Climate change |
genre_facet |
Abisko Arctic Climate change |
op_relation |
http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-8902 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766100259516186624 |