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Chaimungkhun Johansson, Jennifer, 2021. Can ambient temperature patterns predict fireweed phenology?. Second cycle, A2E. Umeå: SLU, Dept. of Wildlife, Fish and Environmental Studies



The Earth’s climate has been changing with greater intensity and frequency in recent years. These changes, especially the warmer climate, have advanced plant phenology, thus increasing the risk of interspecific temporal mismatches, for example pollinators and pollinated flower species. This study’s aim is to find out if temperature accumulations can be used to predict Chamaenerion angustifolium flowering phenology. A novel short-term camera trap dataset and a 13-year old long-term dataset of C. angustifolium flowering were used in conjunction with air temperature from an ensemble dataset to calculate accumulated growing degree-days. A comparison between the short- and long-term dataset was required in case the two datasets wouldn’t provide similar result. A Mann-Whitney U-test suggested that there was no significant difference between the two methods of collecting flowering phenology data. A significant difference was provided by the Welch’s t-test in accumulated growing degree-days between flowering and non-flowering sites, which suggests that temperature accumulation could be used to predict flowering phenology of C. angustifolium.

Main title:Can ambient temperature patterns predict fireweed phenology?
Authors:Chaimungkhun Johansson, Jennifer
Supervisor:Holmes, Sheila and Hofmeester, Tim and Cromsigt, Joris
Examiner:Neumann Sivertsson, Wiebke
Series:Examensarbete / SLU, Institutionen för vilt, fisk och miljö
Volume/Sequential designation:2021:2
Year of Publication:2021
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:SY001 Forest Science - Master's Programme 300 HEC
Supervising department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Keywords:fireweed, Chamaenerion angustifolium, growing degree-days, camera trap, phenology
Permanent URL:
Subject. Use of subject categories until 2023-04-30.:Nature conservation and land resources
Deposited On:18 Feb 2021 11:08
Metadata Last Modified:19 Feb 2021 02:00

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