Results 41 to 50 of about 3,159 (193)

Half a Century of Per‐ and Polyfluoroalkyl Substances in Northern Gannet Eggs: Impact of Regulations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Per‐ and polyfluoroalkyl substances (PFAS), known as “forever chemicals”, are persistent organic pollutants that have been widely used in the industry across the globe for many decades. Their chemical stability, bioaccumulation, and toxicity pose major environmental and health risks. This study examines temporal trends in the concentrations of
Anaïs Fournier, Anaïs Kerric, Raphaël A. Lavoie   +2 more
wiley   +1 more source

Screening for Influenza and Morbillivirus in Seals and Porpoises in the Baltic and North Sea

Pathogens, 2023
Historically, the seals and harbour porpoises of the Baltic Sea and North Sea have been subjected to hunting, chemical pollutants and repeated mass mortalities, leading to significant population fluctuations. Despite the conservation implications and the
Iben Stokholm, Christine Baechlein, Sara Persson, Anna Roos, Anders Galatius, Line Anker Kyhn, Signe Sveegaard, Charlotte Bie Thøstesen, Morten Tange Olsen, Paul Becher, Ursula Siebert   +10 more
doaj   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

A Review of Circumpolar Arctic Marine Mammal Health—A Call to Action in a Time of Rapid Environmental Change

Pathogens, 2023
The impacts of climate change on the health of marine mammals are increasingly being recognised. Given the rapid rate of environmental change in the Arctic, the potential ramifications on the health of marine mammals in this region are a particular ...
Ashley Barratclough, Steven H. Ferguson, Christian Lydersen, Peter O. Thomas, Kit M. Kovacs   +4 more
doaj   +1 more source

Field immobilisation of adult Weddell seals using intramuscular butorphanol and midazolam

Veterinary Record, EarlyView.
Abstract Background When working with free‐ranging phocid seals, methods of chemical immobilisation require ongoing refinement to reduce complications, particularly apnoea, during research procedures. Methods Adult Weddell seals (n = 20) at Cape Crozier, Antarctica, were chemically immobilised with intramuscular injection of butorphanol and midazolam ...
Rachel R. Holser, Rachel P. Hickcox, Daniel P. Costa, Thomas Hildebrand, Sarah P. Flanagan, Michelle A. LaRue   +5 more
wiley   +1 more source

The Miocene seal Monachopsis pontica: isolated in a shrinking sea and adapting to its changing conditions

Royal Society Open Science
More than 170 years have passed since the description of the dwarf Miocene seal Monachopsis pontica. However, its cranial materials were rarely found and described. This paper re-describes M. pontica and discusses its ecological adaptations. M.
Pavlo Otriazhyi, Davit Vasilyan, Karina Vishnyakova, Elena Gladilina, Pavel Gol’din   +4 more
doaj   +1 more source

A framework for the ethical use of animal‐borne devices in post‐release monitoring following rehabilitation

Wildlife Biology, EarlyView.
Rehabilitation and release contribute to conservation efforts for threatened species. Ensuring that these efforts are effective requires a good understanding of the factors which determine survival and integration of released animals into wild populations.
Jessica Harvey‐Carroll, Daire Carroll, Cara-Marie Trivella, Ellen Connelly   +3 more
wiley   +1 more source

Local disconnects in global discourses—The unintended consequences of marine mammal protection on small‐scale fishers

Conservation Letters, 2021
Global commitments prioritize protection of wildlife and improvements to human wellbeing. Local disconnects in these commitments are rarely acknowledged—or their implications assessed—preventing the development of effective solutions.
Katrina J. Davis, Joanna Alfaro‐Shigueto, William N.S. Arlidge, Michael Burton, Jeffrey C. Mangel, Morena Mills, E.J. Milner‐Gulland, José Palma‐Duque, Cristina Romero‐de‐Diego, Stefan Gelcich   +9 more
doaj   +1 more source

Tooth Microwear Texture in the Eastern Atlantic Harbour Seals (Phoca vitulina vitulina) of the German Wadden Sea and Its Implications for Long Term Dietary and Ecosystem Changes

Frontiers in Ecology and Evolution, 2021
Marine mammals are increasingly threatened in their habitat by various anthropogenic impacts. This is particularly evident in prey abundance. Understanding the dietary strategies of marine mammal populations can help predict implications for their future
Elehna Bethune, Ellen Schulz-Kornas, Ellen Schulz-Kornas, Ellen Schulz-Kornas, Kristina Lehnert, Ursula Siebert, Thomas M. Kaiser   +6 more
doaj   +1 more source

Seasonal variations and challenges in estimating populations and identifying species of Korean ungulates using drone‐derived thermal orthomosaic maps

Wildlife Biology, EarlyView.
Drones equipped with thermal infrared (TIR) cameras offer significant time and labor savings in estimating wild ungulate populations. However, accurately monitoring forest‐dwelling ungulates remains challenging due to their elusive behavior and complex habitat.
Jinhwi Kim, Donggul Woo
wiley   +1 more source