Results 1 to 10 of about 1,127 (125)
Mercury in Selected Abiotic and Biotic Elements in Two Lakes in Poland: Implications for Environmental Protection and Food Safety [PDF]
Animals, 2023 Mercury, which tends to bioaccumulate and biomagnify in aquatic food webs, poses a potential health risk to wildlife and to consumers of predatory fish in particular.
Monika Rajkowska-Myśliwiec +1 more
doaj +2 more sources
Microchemical provenancing of prey remains in cormorant pellets reveals the use of diverse foraging grounds. [PDF]
J Wildl Manage, 2022 Microchemical provenancing was successfully applied to otoliths exposed to digestion by piscivorous birds and it was possible to clarify on a small scale from which waterbodies or habitat clusters the birds obtain their food. By the use of prey provenancing, site‐specific management plans can be developed and the effect of management measures on ...
Oehm J +6 more
europepmc +2 more sources
A foraging cost of migration for a partially migratory cyprinid fish. [PDF]
PLoS One, 2013 Migration has evolved as a strategy to maximise individual fitness in response to seasonally changing ecological and environmental conditions. However, migration can also incur costs, and quantifying these costs can provide important clues to the ...
Chapman BB +9 more
europepmc +5 more sources
Freshwater Biology, Volume 68, Issue 2, Page 312-324, February 2023., 2023 Abstract Charophytes are a key group of submerged macrophytes in temperate hardwater lakes, but have declined or been replaced by angiosperms as a result of eutrophication for more than 100 years. At present, this process is continuing in many European lakes despite an overall reduced nutrient loading.
Marta Maria Alirangues Nuñez +6 more
wiley +1 more source
Limnology and Oceanography: Methods, Volume 20, Issue 12, Page 789-810, December 2022., 2022 Abstract Mid‐trophic level (MTL) organisms play a key role in the sub‐Antarctic ecosystem food web, linking primary producers and tertiary consumers transferring energy across trophic levels. In this region, the relative abundance of MTLs has been monitored using single‐frequency acoustic data collected opportunistically in a time series of trawl ...
Pablo C. Escobar‐Flores +4 more
wiley +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 31, Issue 4, Page 948-963, April 2021., 2021 Abstract Invaders affect native species across multiple trophic levels, influencing the structure and stability of freshwater communities. Based on the ‘trophic position hypothesis’, invaders at the top of the food web are more harmful to native species via direct and indirect effects than trophically analogous native predators are. However, introduced
Alessandra Maria Bissattini +10 more
wiley +1 more source
A mesocosm experiment investigating the effects of substratum quality and wave exposure on the survival of fish eggs [PDF]
, 2010 In a mesocosm experiment, the attachment of bream (Abramis brama) eggs to spawning substrata with and without periphytic biofilm coverage and their subsequent survival with and without low-intensity wave exposure were investigated.
A Herzig +46 more
core +1 more source
Latin American Journal of Aquatic Research, 2014 La reineta Brama australis es un importante recurso pesquero artesanal en la zona central chilena, incorporado en los programas de seguimiento biológico, pero con escasas evaluaciones de sus aspectos tróficos.
Francisco Santa Cruz +3 more
doaj +1 more source
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 30, Issue 12, Page 2240-2253, December 2020., 2020 Abstract The crucian carp Carassius carassius, a cyprinid fish characteristic of small ponds, is in decline throughout most of its European range, including in England where it is currently thought to be non‐native. The present study, undertaken by the Norfolk Crucian Project, reports on reductions in pond populations of crucian carp in Norfolk ...
Carl D. Sayer +12 more
wiley +1 more source
A New Zealand demersal fish classification using Gradient Forest models
New Zealand Journal of Marine and Freshwater Research, Volume 54, Issue 1, Page 60-85, March 2020., 2020 ABSTRACT Spatial classifications of the environment have previously been used to characterise biodiversity and to facilitate management planning at large spatial scales. Such classifications are more likely to be adopted if they can demonstrate integration of real patterns in habitats or biotic assemblages, in addition to environment.
Fabrice Stephenson +3 more
wiley +1 more source