Results 161 to 170 of about 221,598 (301)

Volunteer Estuary Monitoring [PDF]

This online method manual from EPA describes how to conduct estuary monitoring programs, with step-by-step guides for chemical, physical and biological sampling and data interpretation. Also describes how to plan and maintain a volunteer force, with tips

core   +1 more source

Quantitative insights into the spatio‐temporal variation of Atlantic salmon (Salmo salar) biomass in a river catchment using eDNA metabarcoding

Journal of Fish Biology, EarlyView.
Abstract Effective species conservation and management requires comprehensive biomonitoring, enhanced by combining traditional and newer methodologies, such as environmental DNA (eDNA) analyses. A seasonal pulse of spawning adult Atlantic salmon (Salmo salar) was detected by normalised eDNA 12S reads from metabarcoding, which facilitated estimation of ...
William Bernard Perry, Nigel Milner, Ifan Bryn Jâms, Mark de Bruyn, Steve J. Ormerod, Kristy Deiner, Holly M. Bik, Gary Carvalho, John Colbourne, Bernard Jack Cosby, Isabelle Durance, Simon Creer   +11 more
wiley   +1 more source

Glass eels and viruses – a lesson learnt from stocking the eastern German Baltic Sea coast

Transboundary and Emerging Diseases, Accepted Article., 2022
Abstract Concerns about Anguillid herpesvirus 1 (AngHV‐1) in European eels, especially due to stocking measures, is increasingly coming into focus and raises questions regarding disease monitoring and prevention. In the past, stocking of AngHV‐1‐positive eels into waters assumed AngHV‐1‐free has led to a rapid increase of infected eels in the wild. For
Laura Kullmann, Mikolaj Adamek, Dieter Steinhagen, Ralf Thiel   +3 more
wiley   +1 more source

Hypoxia Decreases Nitrogen Removal in Coastal Marine Sediments. [PDF]

Environ Sci Technol
Sun J, Yang X, Yu L, Zhang Q, Yung CCM, Li J.   +5 more
europepmc   +1 more source

‘It's not much, but it's honest work’: The status of environmental DNA analyses of fish biodiversity in southern Africa

Journal of Fish Biology, EarlyView.
Abstract Environmental DNA (eDNA) biodiversity surveys have the power to transform the detection of species in natural environments, which is crucial for the conservation and management of freshwater, estuarine and marine environments. Globally, eDNA‐based analyses have increased significantly, with fishes being the most widely studied aquatic ...
Sophie von der Heyden
wiley   +1 more source

Hitchhikers on an Invader: The Parasitic Leech <i>Myzobdella lugubris</i> and the Epibiotic Barnacle <i>Amphibalanus improvisus</i> on the Atlantic Blue Crab <i>Callinectes sapidus</i> in Southwestern Europe. [PDF]

Ecol Evol
de Carvalho-Souza GF, González-Ortegón E, Cuesta JA.   +2 more
europepmc   +1 more source

Acoustic telemetry reveals high site fidelity of yellow‐phase American eels Anguilla rostrata in a large river

Journal of Fish Biology, EarlyView.
Abstract Movement patterns and habitat use of yellow‐phase American eels Anguilla rostrata in the Wolastoq/Saint John River were examined using acoustic telemetry. Tracking 72 tagged yellow‐phase eels from late summer 2021 to autumn 2023 revealed overall restricted longitudinal movements (mean linear range ± standard deviation [SD] 6.4 ± 10.9 km) and ...
Felix Eissenhauer, Tommi Linnansaari, Thomas C. Pratt, R. Allen Curry, Philip M. Harrison   +4 more
wiley   +1 more source

Population Structure and Growth Dynamics of the Invasive Blue Crab <i>Callinectes sapidus</i> in the Loukkos Estuary (Morocco). [PDF]

Biology (Basel)
Touhami F, Bazairi H.
europepmc   +1 more source

Age and growth of the endemic groovebelly stingray (Dasyatis hypostigma), a heavily exploited batoid in the Brazilian Meridional Margin (21–34° S)

Journal of Fish Biology, EarlyView.
Abstract Life‐history data are often lacking for exploited elasmobranchs, jeopardizing proper management and conservation measures for this vulnerable group. Herein, we provided age and growth estimates for the groovebelly stingray (Dasyatis hypostigma), a medium‐sized, heavily exploited batoid endemic to the southwestern Atlantic Ocean.
Giovanni Arlan Torres, Rodrigo Silvestre Martins, Luciano Gomes Fischer, Luís Gustavo Cardoso, Rodrigo Sant'Ana, Bruno Mourato   +5 more
wiley   +1 more source

Phenotypic divergence may facilitate co‐occurrence in Acanthopagrus species (Family: Sparidae)

Journal of Fish Biology, EarlyView.
Abstract Understanding why closely related species co‐occur is one fundamental question in ecology. The seabream genus Acanthopagrus Peters, 1855 (Sparidae) is broadly distributed across the Indo‐Pacific, with four species, A. arabicus and A. sheim (yellowfin group), and A. bifasciatus and A.
Yu‐Jia Lin
wiley   +1 more source