Web18 de abr. de 2024 · Many bumblebee species are rapidly declining across North America, but are important pollinators needed to grow Canada's crops including apples, tomatoes, blueberries and legumes, as well as... WebThe database included nearly 275,000 records of bumble bee specimens collected around North America from 1805 to the present. I continue to add to the database in order to use it for additional research and conservation projects, and as of January 2024, have compiled more than 600,000 specimen and observation records for North American bumble bees.
Climate change winners and losers among North American …
Web22 de jun. de 2024 · Here, we apply occupancy models to a large bumblebee dataset to identify temporal drivers of change over the last century in North America. We explore the impacts of changing temperature, precipitation and floral resources on bumblebee site occupancy. Specifically, we ask two questions: 2. Methods (a) Data Sources (i) … WebFirstly, there is the identification guide part. Each of the 46 bumble bee species found north of Mexico, is covered. There are at least 2 photographs for each species, often three, … first ransomware attack 1989
A phylogenetic framework for the North American …
WebBombus fraternus (Smith) 1854, the southern plains bumble bee. Its range extends from New Jersey to Florida, and west to North and South Dakota, Nebraska, Colorado and New Mexico. Florida county records include: Alachua, Franklin, Gadsden, Levy, Liberty, Orange, and St. Johns. Figure 5. Web6 de fev. de 2024 · Extreme temperatures are driving a dramatic decline in bumblebees across North America and Europe, according to a new study, in yet another way climate change is putting ecosystems at risk.... first rank symptoms schizophrenia