The document summarizes a study that examined how bee communities are affected by the amount of roadside edge habitat in the landscape. Researchers characterized bee communities and the surrounding landscape at multiple sites. They found that roadside edges attract a large number of diverse bee genera, and bee communities were dominated by sunflower-feeding genera. Communities diverged significantly in sites with little roadside edge habitat available in the surrounding landscape. The researchers concluded that roadside edges provide important habitat for bees and influence the composition of local bee communities.
6. Scale
Greenleaf
et
al.
2007
Bee
Body
size
is
related
to
foraging
distance
Bigger
bees
forage
farther
A
majority
of
bee
species
are
foraging
about
1km
7. Vulnerable
to
Land
Use
Change
• Solitary
• Soil
NesNng
• Poor
Dispersers
• Dependent
on
Specific
Flowers
12. QuesNon
Hypothesis:
Bee
communiNes
will
differ
based
on
the
amount
of
edge
habitat
in
the
landscape.
1) Characterize
the
Bee
Community
2) Characterize
the
Landscape
3) Examine
relaNonship
between
amount
of
Roadside
edge
and
Bee
Community
30. Results
Roadside
Edge
High
Low
stress
=
8.52
X
axis
explains
44%
of
variaNon,
Y
axis
explains
33%
31. Conclusions
• Roadside
edges
airact
large
numbers
bees
from
diverse
genera
• Sunflower
feeding
genera
dominate
bee
communiNes
• CommuniNes
diverge
when
liile
roadside
edge
is
in
the
landscape
32. Future
direcNons
• Raster
based
extracNons
of
edge
habitat
with
species
level
taxonomic
resoluNon
• Patch
Size
~
how
big
is
the
grassland
that
our
site
is
situated
in?
• Combine
local
and
landscape
factors
33. References
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34. Acknowledgements
Photo
Credit:
J.
Travis
Bildalh
Sam
Droege
Collin
Schwantes
Collaborators:
Mary
Jamieson
Adrian
Carper
Stacey
Edriss
Bernadeie
Kuhn
Deane
Bowers
Andrew
Norton
Funding
and
InsNtuNons:
United
States
Department
of
Agriculture
GIS
Colorado
University
of
Colorado
Boulder
University
of
Wisconsin
Madison
Colorado
State
University
Acknowledgements:
Virginia
Scoi
Amber
Churchill
Karen
Wright
QDT
Group
at
CU
Boulder
Field
and
Laboratory
Technicians
