The use of netting over fishponds as a hazard to waterbirds
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Published source details
Nemtzov S.C. & Olsvig-Whittaker L. (2003) The use of netting over fishponds as a hazard to waterbirds. Waterbirds, 26, 416-423.
Published source details Nemtzov S.C. & Olsvig-Whittaker L. (2003) The use of netting over fishponds as a hazard to waterbirds. Waterbirds, 26, 416-423.
Actions
This study is summarised as evidence for the following.
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Use netting to exclude fish-eating birds Action Link |
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Use netting to exclude fish-eating birds
A replicated study in 2000-1 at 101 fish ponds, covered in 20 net types, in two fish farms in Israel (Nemtzov & Olsvig-Whittaker 2003) found that few or no dead birds were found in small mesh sizes with thick or dark-coloured netting. However, the largest numbers of entangled (dead) birds were found in two, thin monofilament net types, even though they had small mesh sizes (35 birds equivalent to 34/ha and 30 birds, equivalent to 25/ha). Ponds with slack, horizontal nets also had fewer dead birds, probably because they were more visible (flapping in the wind) than tight-strung nets. Entrapment within some ponds was attributed to poor net maintenance (e.g. holes/tears). A total of 327 dead (entangled) and 4,575 live birds (under nets) of 31 species were recorded.
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