. | . |
Mapping of undersized fish, crustaceans may help sustainable fishing efforts by Brooks Hays Washington DC (UPI) Feb 5, 2021 By mapping where undersized fish and crustaceans are congregated, researchers hope to help fisheries managers better protect vulnerable fish and crustacean stocks. In a paper, published Friday in the journal Frontiers in Marine Science, researchers pinpointed a variety of hotspots for undersized fish and crustaceans in southern European seas -- areas where stronger fishing restrictions are warranted. The mapping efforts could be repeated elsewhere to identify regions where overfishing risks and large juvenile fish populations overlap. "Natural fish populations need time to reproduce and recover from fishing impacts -- this is the only way to achieve a balance between natural resources and human exploitation," lead study author Giacomo Milisenda said in a news release. "Our findings provide evidence supporting active spatial-based management, such as the designation of Fisheries Restricted Areas [FRAs] in order to minimize the capture of immature or undersized specimens and improve the sustainability of demersal -- that is, sea floor -- fisheries," said Milisenda, a scientist with the Stazione Zoologica Anton Dohrn, a research institute in Naples, Italy. Despite pledges from the European Union's member states to take actions to curb overfishing, slow habitat destruction and reduce unwanted catches, recent reports suggest Europe is falling short on a variety of marine sustainability and biodiversity goals. Recent reports by the United Nations show more than a third of the world's fish stocks are overfished -- in the Mediterranean and Black Sea, roughly 75 percent of fish stocks are overfished. Around the world, commercials fishers throw back approximately 40 percent of their catch. In the Mediterranean, at least half of the unwanted catch is caused by bottom trawling, a damaging practice that involves dragging nets across the seafloor. Unwanted catch includes both fish that aren't commercial targets and target fish that are too small to meet regulations. For the new study, researchers surveyed trawling data and unwanted catch reports to isolate regions where undersized fish and crustaceans are concentrated. The new analysis revealed several regions important to juvenile fish and crustaceans: the Portuguese coast, Catalan Sea, South of Sicily and Liguria and northern Tyrrhenian Seas. Despite the rich concentrations of young fish and crustaceans, trawling remains common in these areas. Researchers hope their findings will inspire European Parliament and fisheries managers to take aggressive action to limit fishing in these areas. "Spatial management can only be successful if it is combined with the active collaboration of stakeholders [fishers] and an effective regulation plan," said Milisenda.
Open ocean 'surface slicks' serve as nurseries for dozens of fish species Washington DC (UPI) Feb 4, 2021 For newly hatched and juvenile fish, the open ocean can be a harsh environment. Upon hatching, young fish find themselves in a bewildering expanse of blue, filled with strong currents and predators, and with no place to hide. Until now, scientists weren't sure how young fish survive. But new research, published Thursday in the journal Scientific Reports, suggests lengthy stretches of calm, glassy water - features called "surface slicks" - serve as nurseries for dozens of fish species, ... read more
|
|
The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us. |