Results 51 to 60 of about 784 (171)

A new acoustic telemetry tag that identifies carrier mortality by monitoring activity level

Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1735-1742, June 2026.
Abstract We present a new acoustic telemetry tag capable of detecting whether its carrier stops moving for long enough to presume the organism has died, and of reporting the time elapsed since movement ceased. The tag uses existing environmental sensor technology together with an algorithm with user‐specifiable thresholds, and importantly, can separate
Karl P. Phillips, David H. Roth, Dale Webber, Richard Sawler, Jeremy Kuehner, Ainsley Hilliard, Mario Theriault, Tommi Linnansaari   +7 more
wiley   +1 more source

Modern state of aquatic biological resources of the Amur River basin and directions of their research

Известия ТИНРО, 2020
Current status of aquatic biological resources in the middle and lower parts of the Amur River basin, including Lake Khanka and the Amursky Liman, is assessed. Generally high abundance of the water organisms is noted, but a downward trend is revealed. In
N. V. Kolpakov, D. V. Kotsyuk, V. I. Ostrovsky, N. N. Semenchenko, V. N. Koshelev, A. P. Shmigirilov, E. V. Ostrovskaya, E. I. Barabanshchikov, T. V. Kozlova, S. E. Kulbachny, E. V. Podorozhnyuk, O. V. Vilkina, M. E. Shapovalov   +12 more
doaj   +1 more source

Multi‐Seasonal eDNA Metabarcoding Highlights a Resurgence in Fish Diversity Across a Severely Impacted Estuarine Ecosystem

Aquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Aquatic ecosystems have been in an alarming state of decline for decades. In particular, estuarine ecosystems have experienced long‐term declines in fish diversity due to factors such as habitat degradation, pollution and altered hydrology. Monitoring these systems is often limited by the difficulty and cost of conventional survey methods.
Jake M. Jackman, Naiara Guimarães Sales, Chiara Benvenuto, Andrea Drewitt, Andrew Wolfenden, Peter E. Robins, Ilaria Coscia, Allan D. McDevitt   +7 more
wiley   +1 more source

Groundtruthing of pelagic forage fish detected by hydroacoustics in a whale feeding area using environmental DNA

Environmental DNA, 2020
Conservation of whales, considered as umbrella species in marine environments, requires to be able to understand their relationships with ecosystem components such as prey species, including pelagic fish. However, studying such relationships in nature is
Chloé Suzanne Berger, Bérénice Bougas, Samuel Turgeon, Sophia Ferchiou, Nadia Ménard, Louis Bernatchez   +5 more
doaj   +1 more source

Seasonal Variation of δ13C and δ15N in a Boreal Lake Fish Community—Year‐Round Patterns and Explanatory Variables

Ecology of Freshwater Fish, Volume 35, Issue 2, April 2026.
ABSTRACT Seasonal changes in freshwater ecosystems influence fish resource use through both environmental and biological factors, but year‐round studies that include ice‐covered months have been lacking. We investigated seasonal variation in the stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) using year‐round monthly sampling of the fish ...
E. S. Eerola, B. Hayden, A. J. Piro, K. K. Kahilainen   +3 more
wiley   +1 more source

Locating Little Larvae: Environmental DNA Methods Can Detect a Rare Fish Species Under Field Estuarine Conditions

Environmental DNA, Volume 8, Issue 2, March/April 2026.
We measured a positive linear relationship between eDNA concentration and abundance for larval Delta Smelt (Hypomesus transpacificus) with N = 1 larva exceeding the limit of detection for the novel qPCR assay. Field experiments quantified the probability of detection for eDNA sampling methods at known abundances and distances from source. ABSTRACT Rare
Sarah A. Stinson, Melinda R. Baerwald, Kevan Yamahara, Avery Scherer, Yekaterina Karpenko, Cheryl Dean, Matthew B. Espe, Gregg Schumer, Sarah Brown, Brian Schreier, Daphne Gille   +10 more
wiley   +1 more source

Fishing for Smelt, Osmerus eperlanus (Linnaeus, 1758) A traditional food fish – possible cuisine in postmodern Sweden? [PDF]

Slovenský Národopis, 2016
For the rural population in Sweden, fishing in lakes and rivers was of great importance until recently. Many fish species served as food or animal fodder, or were used to make glue and other useful products.
Ingvar Svanberg, Madeleine Bonow, Stanisław Cios   +2 more
doaj  

Long-term effects of extreme weather events and eutrophication on the fish community of shallow Lake Peipsi (Estonia/Russia)

Journal of Limnology, 2013
The fish kill in lake Peipsi (Estonia/Russia) during the extraordinarily hot summer of 2010 evoked an investigation into the effects of environmental extremes and long-term eutrophication on the fish community of the lake.
Külli Kangur, Peeter Kangur, Kai Ginter, Kati Orru, Marina Haldna, Tõnu Möls, Andu Kangur   +6 more
doaj   +1 more source

ОБСЕМЕНЕННОСТЬ КОРЮШКИ (OSMERUS EPERLANUS) БАКТЕРИЯМИ РАЗЛИЧНЫХ ТАКСОНОМИЧЕСКИХ ГРУПП [PDF]

KSTU News, 2020
Исследование микрофлоры корюшки проводилось впервые, ранее изучалась только паразитофауна этого вида рыбы. Корюшка – массовый объект питания населения Калининградской области, изучение микрофлоры позволит предотвратить возможные инфекционные заболевания человека.
openaire   +1 more source

A Conceptual Framework and Methods for Studying the Connectivity of Fishes

Fish and Fisheries, Volume 27, Issue 2, Page 342-369, March 2026.
ABSTRACT Connectivity is a multifaceted concept that has important implications for the management and conservation of marine and freshwater fishes. We developed a conceptual framework that encompasses multiple, interrelated categories of connectedness, including landscape (e.g., structural, functional) connectivity and ecological (e.g., trophic ...
Jordanna N. Bergman, Jessica A. Robichaud, Jasper McCutcheon, Michael T. Booth, Brendan Campbell, Grace A. Casselberry, Cienna R. Cooper, Bronwyn M. Gillanders, Lucas P. Griffin, Edward Hale, Luc LaRochelle, Karen J. Murchie, Mary Peacock, Reid G. Swanson, Simon D. Stewart, Ryan. J. Woodland, Daniel P. Zielinski, Steven J. Cooke, Morgan L. Piczak   +18 more
wiley   +1 more source