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<dd><font size=2>Andersson, G. K. S., K. Birkhofer, M. Rundl and H. G.
Smith. (2013). "Landscape heterogeneity and farming practice alter
the species composition and taxonomic breadth of pollinator
communities." <u>Basic and Applied Ecology</u> <b>14</b>(7):
540-546.<br>
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Effects of landscape heterogeneity and farming practice on species
composition are less well known than those on species richness, in spite
of the fact that community composition can be at least as important for
ecosystem services, such as pollination. Here, we assessed the effect of
organic farming and landscape heterogeneity on pollinator communities,
focusing on multivariate patterns in species composition and the
taxonomic breadth of communities. By relating our results to patterns
observed for species richness we show that: (1) species richness
generally declines with decreasing landscape heterogeneity, but taxonomic
breadth only declines with landscape heterogeneity on conventionally
managed farms. We further highlight the importance to provide results of
species composition analyses as (2) primarily hoverfly species benefited
from organic farming, but three bee species from different families were
favoured by conventionally managed farms and (3) two hoverfly species
with aphidophagous larvae showed contrasting responses to landscape
heterogeneity. These results advance the understanding of how landscape
heterogeneity and farming practices alter insect communities and further
suggest that diversity patterns need to be analysed beyond species
richness to fully uncover consequences of agricultural
intensification.<br><br>
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