24 апр Since later 1990’s, rusty patched bumble bee wealth and you will delivery has actually declined notably
The fresh new temporary congruence and rates of them refuses led to the tip that they was in fact because of sign otherwise spillover out-of Letter
Our analyses imply that new resiliency, icon, and redundancy of the rusty patched bumble bee have got all denied as the later 1990s and are usually projected to carry on so you can refuse along side 2nd numerous many years. Usually, new kinds try numerous and you will widespread, with countless populations around the an expansive range, and you will try the brand new fourth-ranked Bombus variety within cousin abundance research. This information was also reported by the other people.
As listed over, the newest rusty patched bumble bee are broadly delivered historically along the East Us, upper Midwest, and southern Quebec and you may Ontario, a location spanning 15 ecoregions, 29 Claims/Provinces, and 394 You
Historically, the fresh rusty patched bumble bee has been recorded off 926 populations; while the 1999, new varieties has been noticed during the 103 communities, and therefore means an 88 % decline about kissbridesdate.com use a weblink amount of populations noted before 2000).
