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Homework answers / question archive / ENV1600: Online 2020 Citations and Summary - part one information to the field (i

ENV1600: Online 2020 Citations and Summary - part one information to the field (i

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ENV1600: Online 2020 Citations and Summary - part one information to the field (i.e., the author is not citing other authors) and use this information to craft your in-text citation. The in-text

Running head: BUMBLE BEES AND CLIMATE CHANGE 0

Bumble Bees and Climate Change

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Bumble Bees and Climate Change

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Sirois-Delisle, C., & Kerr, J. T. (2018). Climate change-driven range losses among bumblebee species are poised to accelerate. Scientific reports8(1), 1-10. Retrieved from https://www.nature.com/articles/s41598-018-32665-y.pdf

 

Bumblebees are vital pollinators of many native plant species and agricultural crops but over the past century, bumblebees species have declined when their habitat turns to be not suitable for habitation due to climate change (Sirois-Delisle, & Kerr, 2018, p.1)

Soroye, P., Newbold, T., & Kerr, J. (2020). Climate change contributes to widespread declines among bumblebees across continents. Science367(6478), 685-688. Retrieved from https://science.sciencemag.org/content/367/6478/685

 

According to Soroye, Newbold, & Kerr, (2020, p.685), climate change has affected suitable habitat for many pollinators such as bumblebees resulting in a decline of this important pollinators.

Vray, S., Rollin, O., Rasmont, P., Dufrêne, M., Michez, D., & Dendoncker, N. (2019). A century of local changes in bumblebee communities and landscape composition in Belgium. Journal of insect conservation23(3), 489-501. https://doi.org/10.1007/s10841-019-00139-9

 

According to Vray, Rollin, Rasmont, Dufrêne, Michez, & Dendoncker, (2019, p.289), the trend of the bumblebee population can be explained by climate change, habitat loss and fragmentation and intensive use of agrochemical inputs.

Article Summary

Sirois-Delisle, C., & Kerr, J. T. (2018). Climate change-driven range losses among bumblebee species are poised to accelerate. Scientific reports8(1), 1-10. Retrieved from https://www.nature.com/articles/s41598-018-32665-y.pdf

 

Habitat loss and fragmentation, pesticides, parasites, pathogen spillovers, and climate change has shaped the distribution of the world bee's over the past century resulting in a decline in this species. Extreme temperature events under climate change put more bumblebees at risk of local extinction. Species distribution models are used to inform any conservation strategies to mitigate the impact of the global change on species distribution and range of climate. However, there is a challenge in distribution modeling research especially in determining whether species niche limits as modeled by SDMs match the realized range limits. Using Maxent modeling, current and future species-specific distribution based on climatic conditions were projected. This model predicted species distribution using the existing records of their associated environmental conditions. The regions where multiple bumblebees' specie ranges were the sample for observation. These hotspots were mapped and overlapped across all RCP scenarios to identify areas suitable for new species in the future regardless of climate change. The result of the finding suggests that there is a significant decline in the bumblebee's species across much of North America. Few bumblebees were likely to maintain a stable geographical range in sizes. The losses of the bumblebees were found in a region that had strongly disturbed anthropogenic activities such as agricultural and developed land. These mitigation strategies should be directed toward the region where climate change poses the greatest risk to the bumblebee population.

Soroye, P., Newbold, T., & Kerr, J. (2020). Climate change contributes to widespread declines among bumblebees across continents. Science367(6478), 685-688. Retrieved from https://science.sciencemag.org/content/367/6478/685

 

The presence of environmental changes such as loss of the habitat alters local species because the environmental changes will exceed species tolerance causing the population to decline. Among the species that would be affected by environmental changes include pollinator such as bumblebees. Even when their many mechanisms that determine how species are affected by climate change, the challenge is on discovering process that strongly affects species persistence. The bumbles bees species occupancy and regional richness across North American and Europe are evaluated with the database generated from the occurrence record of 66 bumblebees' species. The estimation species distribution is determined in quadrats measured 100 km by 100km in the baseline. Detection corrected occupancy models are used to estimate the probability of occurrence for each species in quadrats in each period. Calculation of the species probabilities occupancy is determined to generate species richness estimates between the periods. The finding indicates that bumble bee species occupancy and species richness were changing due to climatic condition change exceeding individual species that were historically observed that had developed tolerance. In the areas where climatic changes cause local weather to fall within the specific condition that supports tolerance, there will be higher bumble bees occupancy. Projection suggests that recent climatic change has promoted widespread bumble bee declines in North American and Europe. The mitigation strategies include consulted efforts to manage habitats to reduce exposure to the growing frequency of temperatures that are extremely relative to species historical tolerances.

Vray, S., Rollin, O., Rasmont, P., Dufrêne, M., Michez, D., & Dendoncker, N. (2019). A century of local changes in bumblebee communities and landscape composition in Belgium. Journal of insect conservation23(3), 489-501. https://doi.org/10.1007/s10841-019-00139-9

 

The bumblebee species is undergoing a strong population decline in Western Europe and North America. 68 bumblebee species in Europe, 31 of those species are declining, 20 of those species are stable and only 9 species show a positive trend and expansion of their distribution. The population declines in agricultural areas of Western Europe than in the Mediterranean and mountainous regions where relatively extensive. The trend of the bumblebee population can be explained by climate change, habitat loss and fragmentation, and the intensive use of agrochemical inputs. The study aims to qualify and quantify the change in bumblebee communities about land escapes that have occurred in the last century. The data collection was restricted to a small sample of different localities. The chosen sites were samples at a different period to observe communities over time. The localities representing as much as possible the land cover diversity of Belgian biogeographically regions were a target. The finding of on Spatio-temporal changes in bumblebee communities shows that observed and bumblebee species richness globally decreased at study localities respectively from 28 to 19 species and from 26.5 to 18.1 species over 100 years. The more decline is observed in the two western localities such as morsel and Trivieres. Agricultural landscape with residual undisturbed element has a higher greater number of bumblebee colonies. The mitigation strategies include bee-friendly management such as low or no pesticide use, plant selection, and late mowing.

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