Results 51 to 60 of about 737 (167)

Bycatch as a potential threat to harbour porpoises (Phocoena phocoena) in Polish Baltic waters

NAMMCO Scientific Publications, 2003
Sixty-two verified reports obtained in the years 1990-1999 on the bycatch, strandings and sightings of harbour porpoises in the Polish Baltic were analysed in this study. In relative terms the highest number of reports (22) was noted in Puck Bay.
Krzysztof E Skóra, Iwona Kuklik
doaj   +1 more source

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

Integrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu, Zitong Zhou, Peng Ding, Yu Pan, Zhi Yang, Haochi Wang, Fangqiao Wang, Tianshi Wei, Pengxiang Duan, Tomonari Akamatsu, Zhitao Wang   +10 more
wiley   +1 more source

Observer coverage and interaction rates determine the choice between design‐based and machine learning bycatch estimators for rare species

Conservation Biology, EarlyView.
Abstract Robust estimates of the magnitude of protected species bycatch are essential for effective fisheries management and marine conservation. Existing bycatch estimation methods typically struggle to accurately and precisely estimate the bycatch of rare species as a result of the statistical assumptions necessary to overcome infrequent encounters ...
Christopher Long, Robert Ahrens, T. Todd Jones, Zachary Siders   +3 more
wiley   +1 more source

Mapping Seasonal Interaction Risk Between Harbour Porpoises and Gillnet Fisheries to Inform Management Thresholds

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 7, July 2026.
ABSTRACT When empirical bycatch data are limited, risk‐based assessments offer a valuable tool for identifying areas where marine mammals and fisheries are most likely to interact. The harbour porpoise (Phocoena phocoena) is among the most vulnerable to incidental capture in gillnet fisheries.
Tiffany Goh, Enrico Pirotta, Oriol Giralt Paradell, Mark Jessopp, Emer Rogan   +4 more
wiley   +1 more source

Echosounders for fish detection disturb harbour porpoises

Environmental Pollution
Abstract The marine world is an acoustic world that has become noisier with the increasing diversity and intensity of human activities at sea. The harbour porpoise ( Phocoena phocoena ) is one of the best-studied cetaceans regarding hearing and responses to human-made underwater ...
Jeroen Hubert, Benoît Bergès, Clea Parcerisas, Elisabeth Debusschere, Joost A. C. de Bruijn, Jozefien M. Demuynck, Carlota Muñiz, Hans Slabbekoorn   +7 more
openaire   +3 more sources

Trends in Aquatic Environmental DNA Research in Alaska

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Environmental DNA (eDNA) analysis is an emerging tool with significant potential to advance biomonitoring, particularly in remote and logistically challenging environments. To evaluate the state of eDNA research in Alaska, we conducted a literature review and a regional survey and results provide the first comprehensive overview of eDNA research in ...
Brandi Kamermans, Maggie Harings, Rachel Lekanoff, Laura E. Timm, Erik Schoen, J. Andrés López, Jessica R. Glass   +6 more
wiley   +1 more source

Species‐Specific qPCR Assays for Detecting Blue, Fin, and Sei Whales (Balaenoptera spp.) From Offshore Environmental DNA Samples

Environmental DNA, Volume 8, Issue 4, July‐August 2026.
Species‐specific eDNA qPCR assays were developed and validated for blue, fin, and sei whales and were tested alongside visual surveys in the northwest Atlantic. Results show strong concordance for fin whales, demonstrating eDNA's value for enhancing offshore monitoring of at‐risk large whales.
Chloe V. Robinson, Emma J. Laqua, Katherine Gavrilchuk, David Gaspard, Amy Migneault, Julien Delarue, Bertrand Charry   +6 more
wiley   +1 more source

Geographical, and seasonal variation in the diet of harbour porpoises (Phocoena phocoena) in Icelandic coastal waters

NAMMCO Scientific Publications, 2003
The stomach contents of 1,047 harbour porpoises (Phocoena phocoena) bycaught in gillnets off Iceland were analysed. Most of the samples were obtained southwest (SW) and southeast (SE) of Iceland and the majority were taken in March and April.
Gísli A Víkingsson, Droplaug Ólafsdóttir, Jóhann Sigurjónsson   +2 more
doaj   +1 more source

Conserving the World's Specialist Riverine Birds

WIREs Water, Volume 13, Issue 4, July/August 2026.
Specialist riverine birds constitute a diverse bird group globally, highly adapted to rivers and streams. They are at risk from multiple threats to rivers, riparian zones and river catchments including impoundment, hydropower and abstraction; land‐use changes including urbanization and agricultural intensification; traditional and emerging pollutants ...
Ankita Sinha, Nilanjan Chatterjee, Steve J. Ormerod   +2 more
wiley   +1 more source

Will harbour porpoises (Phocoena phocoena) habituate to pingers?

J. Cetacean Res. Manage., 2023
Large bycatches of harbour porpoises (Phocoena phocoena) occur in gillnet fisheries throughout the Northern Hemisphere. Several mitigation measures, including acoustic deterrent devices or ‘pingers’, have been used in efforts to reduce this bycatch. The potential exists for harbour porpoises to habituate to pingers, thus reducing their effectiveness ...
Tara M. Cox, Andrew J. Read, Andrew Solow, Nick Tregenza   +3 more
openaire   +1 more source