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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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The roles of remote sensing in nature conservation

The roles of remote sensing in nature conservation

During recent decades, a rapid increase in available data sources has enabled researchers to develop hundreds of new remote sensing applications using data provided by new sensors attached to satellites, aircrafts and drones. However, a major challenge remains unresolved: how to transfer the knowledge of these technological advances to conservation practitioners and facilitate access to the remote sensing products that are currently available.  In this volume, the ability of new technologies, such as drones, camera traps or miniaturized sensors, to enhance our information on habitat condition, species occurrence, invasive species mapping or biodiversity is illustrated. There are several case studies from Natura 2000 and LTER sites:  these were designed to meet the requirements of the EC Birds and Habitats Directives and the commitments associated with the EU Biodiversity Strategy, including regular habitat assessments. In this volume, a practical perspective on how remote sensing applications can benefit these long-term monitoring or surveillance programs is provided. With these requirements in mind, the time is now right for conservation ecologists, researchers, technicians, managers, policy makers and practitioners to embrace the new technologies and products that are available from the remote sensing community. informacion[at]ebd.csic.es: Díaz-Delgado et al (2017) The Roles of Remote Sensing in Nature Conservation. A Practical Guide and Case Studies © Springer International Publishing AG2017. Pp. 318. Springer, Cham, Switzerland. ISBN: 978-3-319-64330-4, DOI 10.1007/978-3-319-64332-8


http://www.springer.com/gp/book/9783319643304