NDLI: Pollinator behavioural responses to grazing intensity

Content Provider	Springer Nature Link
Author	Sjödin, N. Erik
Copyright Year	2006
Abstract	It has been suggested that intensive grazing management, aimed at maintaining plant diversity, might not be the optimal choice to preserve diversity of insects in semi-natural pastures. In the present study the behaviour of flower visiting insects was studied in two semi-natural pastures in central Sweden. Two grazing treatments were established with one grazed from mid-May, “continuous”, and one grazed from mid-July, “late”. Flower visitors were followed for 9 weeks in summer 2003 in 7 pairs of 5 × 5 m plots on two sides of a fence dividing the two grazing treatments. Visitor behaviour was studied on three decision levels between: (1) habitats, (2) flowers and (3) activities on flowers. The pattern varied between decision levels: More species and individual visitors chose to forage in the late grazing treatment. Visitation rate and flower constancy did not differ between treatments and was related, to a large extent, to plant species richness. In relation to flowers, insects utilized a broader diversity of activities in the late grazing treatment. All patterns were consistent across sites and during the whole study period. The differences in pollinator abundance and activities on flowers were best explained by the higher abundance of flowers. It is suggested that studies of insect behaviour may be a useful tool when deciding on management recommendations. Late grazing is recommended as a useful management regime and might potentially function as a substitute for mowing in the future.
Starting Page	2103
Ending Page	2121
Page Count	19
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	16
Issue Number	7
e-ISSN	15729710
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-10-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Behaviour Bumblebee Grassland Grazing Management Natural conservation Pollination Semi-natural Tree Biology Plant Sciences Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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