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Impact of fisheries on sea turtles

The bycatch of sea turtles by industrial fisheries is receiving an increasing attention in recent years due to the high impact it causes on these endangered species. This issue was evaluated in southern Spain waters that harbors an important feeding ground of loggerhead and leatherback turtles, including the endangered Eastern Atlantic loggerhead population. To quantify the impact that different fisheries represents to sea turtles, 272 fishermen answered to detailed illustrated questionnaires in all the main ports of Andalusia and Murcia (Spain) during 2014. This study has updated the knowledge of turtle bycatch in the southwestern Mediterranean revealing a widespread impact of fisheries on sea turtles. Fishermen recognized an annual catch of 2.3 turtles per boat. Considering the census of industrial fishing boats in the study area (1182), more than 2840 sea turtles could be bycaught per year in the study area. Most of captures (96.2%) were produced during the summer. These results suggest a severe impact of most of legal fisheries (surface longline, pursue seine, trawling and small scale fisheries) on loggerhead feeding grounds in the southwestern Mediterranean. Fishermen suggests that drift fishing conducted by foreign or illegal fishermen and almadrabas are also causing a significant bycatch of turtles. Several measures such as reviewing compliance of current fishing and environmental regulations, modifying turtle technics to reduce turtle bycatch (e.g. reduction of the use of squid as bait and disposal of hooks deeper in the water column), facilitating the rescue and handle of wound turtles and their transport to the port for recovery, and recognizing the efforts of anglers to perform a more sustainable fishing, are recommended to mitigate this impact. informacion[at]ebd.csic.es: Marco et al (2020) Sea turtle bycatch by different types of fisheries in southern Spain. Basic and Applied Herpetology https://doi.org/10.11160/bah.187


http://ojs.herpetologica.org/index.php/bah/article/view/187
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Brown bear attacks on humans: a worldwide perspective

Brown bear attacks on humans: a worldwide perspective

Negative encounters with brown bears are rare and mainly non-fatal. This is the main finding of this study where the authors investigated more than 600 brown bear attacks on humans in 2000-2015 across the range inhabited by the species. Defensive behavior of females protecting their cubs was documented in the majority of the attacks. Half of the attacked people were engaged in leisure activities in nature, such as hiking and berry or antler picking. Other frequent scenarios were the result of inappropriate and risk-enhancing human behaviors (e.g. walking in natural areas with an unleashed dog, or chasing a wounded bear while hunting), and could be reduced by improving public education and awareness of the issue. Bear attacks were more frequent in remote areas with low density of people and high density of bears. Authors highlight the importance of educating the large public about how to behave properly in bear country to increase both human and bear safety, as well as to promote coexistence. informacion[at]ebd.csic.es: Bombieri et al (2019) Brown bear attacks on humans: a worldwide perspective. Sci Rep https://doi.org/10.1038/s41598-019-44341-w


https://www.nature.com/articles/s41598-019-44341-w