The problem of waterfowl becoming entangled and killed in netting suspended over fishponds, and the effectiveness of this technique in excluding birds from fishponds, was studied at two fish farms in Israel. A variety of physical and environmental factors of 101 netted fishponds with 20 net types were recorded, as were the number and species of dead birds entangled in the netting, and those observed alive under the netting. Numbers of dead birds were mainly a function of the net’s visibility: with fewer dead birds in small mesh size, and also in thick or dark-colored netting. Large numbers of dead birds occurred in netting made of thin monofilament even though it had small mesh size. The number of live birds at netted ponds was mainly a function of poor net maintenance, rather than net type. The results were used to formulate guidelines for using netting over fishponds in Israel, that include: fishpond netting should be made of thick, dark-colored material with small mesh size (<5 cm), and a total ban should be imposed on the use of thin monofilament nets. These guidelines will allow for better bird conservation, while reducing conflict between fish-farm managers and piscivorous birds.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 26 • No. 4