Research team from Simon Fraser University We investigated the adverse effects of climate change on honeybees and their populations.
Rising temperatures adversely affect bee populations
Climate change There has been growing interest in the scientific community for decades. As the temperature of the earth rises, so do the various adverse effects on the earth. The study found that over the last 120 years, changes in temperature have adversely affected the populations of most species of honeybees. The researchers pointed out that changes in temperature had the greatest negative impact compared to others, such as precipitation and flower resources.
“Bumblebees are important pollinators for wild plants and crops that humans rely on for food, so we need to develop conservation strategies that take into account the future impact of climate change on honeybee populations.” Hanna Jackson, a research leader and a master’s student at the M’Gonigle Lab at Simon Fraser University, explained.
This study was recently Biology letter..
Collaborators in the study include the US-based pollinosis partnership, the Xerces Society for Invertebrate Conservation, and the University of Southern California’s Faculty of Biological Sciences.
Analysis of different species of bumblebee
The research team investigated an existing dataset containing records of 46 species of bumblebees in North America from 1900 to 2020. By doing so, we were able to create two occupancy models, a time-focused model and an environmental factor-focused model. This meant that scientists could estimate the impact of climate and land-use variables on species occupancy. This is a measure of where the species was found. It was found that a total of 6 bumblebees decreased over time, 22 increased, and the remaining 18 appeared to be stable.
In addition, the team observed that both temperature and precipitation increased on average between 1900 and 2020. This is the post-Industrial Revolution period. Therefore, temperature changes mainly adversely affected bumblebees. Thirty-seven of the 46 species showed less significant decrease or positive increase in occupancy under observed temperature changes compared to when the temperature remained constant.
In addition, scientists noted that nine species of bumblebees showed temperature change-related declines within that range. The team was unable to find patterns of other factors investigated, such as precipitation, and only one species was reduced based on flower resources.
In fact, the results of both flower resources and precipitation were mixed. About half of the bumblebee seeds were adversely affected by changes in precipitation and flower resources, and the other half were positively affected. Therefore, researchers conclude that changes in temperature are a major environmental factor driving changes in bumblebee community composition.
“Bumblebee species are likely to have different future responses to land use and climate change, so conservation activities should prioritize individual species, taking into account their unique climate and habitat preferences.” Jackson concluded.
https://www.innovationnewsnetwork.com/impacts-of-climate-change-on-bees/22603/?utm_source=rss&utm_medium=rss&utm_campaign=impacts-of-climate-change-on-bees Refute the negative effects of climate change on bees