Unmown refuge areas and their influence on the survival of grassland birds in the Saône valley (France)
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Published source details
Broyer J. (2003) Unmown refuge areas and their influence on the survival of grassland birds in the Saône valley (France). Biodiversity and Conservation, 12, 1219-1237.
Published source details Broyer J. (2003) Unmown refuge areas and their influence on the survival of grassland birds in the Saône valley (France). Biodiversity and Conservation, 12, 1219-1237.
Actions
This study is summarised as evidence for the following.
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Provide refuges during harvest or mowing Action Link |
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Leave refuges in fields during harvest Action Link |
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Provide refuges during harvest or mowing
A replicated study in 1996-1997 in 62 hay fields in Bourgogne, France (Broyer 2003) found that contact between mowing machinery and unfledged quail Cortunix cortunix and corncrakes Crex crex was reduced by approximately 50% and 33% respectively, by leaving 10 m-wide, uncut strips in the centre of fields. In addition, unmowed strips had the highest concentrations of corncrakes, quails and passerines (7.7 birds/ha, 3.8 birds/ha and 10.8 birds/ha respectively in 1996). All refuge areas were mown within the first 10 days of August using the ‘outside-in’ method. During mowing, observers with binoculars recorded birds in the refuge areas.
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Leave refuges in fields during harvest
A replicated study in 1996-7 in 62 hay fields in Bourgogne, France (Broyer 2003), found that contact between mowing machinery and unfledged common quail Coturnix coturnix and corncrake Crex crex was reduced by approximately 50% and 33% respectively, by leaving 10 m wide, uncut strips in the centre of fields. In addition, unmowed strips held the highest concentrations of corncrakes, quails and passerines (7.7 birds/ha, 3.8 birds/ha and 10.8 birds/ha respectively in 1996).
Output references
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