Population response of pelagic fishes (ciscoes, Coregonus spp.) to rapidly accelerated eutrophication of an originally oligotrophic deep lake DOI Creative Commons
Thomas Mehner, Sabine Wollrab, Thomas Gonsiorczyk

и другие.

Inland Waters, Год журнала: 2023, Номер 13(4), С. 596 - 613

Опубликована: Окт. 2, 2023

Not much is known about early responses of pelagic fish populations to rapidly increasing nutrient concentrations in originally oligotrophic lakes. Here we report on population parameters a pair ciscoes (Coregonus spp.) exposed accelerating eutrophication the deep (69.5 m) and stratified Lake Stechlin (NE Germany), which total phosphorus (TP) concentration increased from 15 mg m-3 >60 within 10 years. With TP concentrations, lower Secchi depths, declining oxygen deeper water layers, higher phytoplankton zooplankton biomass were observed. Correlation analyses supported strong bottom-up directed effects primary secondary producers, negative quality parameters. Annual hydroacoustic records midwater trawling showed an increase average individual size. There was no temporal trend biomass, but observed cyclic annual fluctuations. Diel vertical migration (DVM) amplitudes declined, primarily by occurrence shallower waters than previous years during daytime. We propose that release density-dependent food limitation, due plankton abundances, resulted sizes for both cisco species, turn increasingly blurs species discrimination because length distributions are longer substantially different. Our data show value long-term lake monitoring including surveys, understand initially subtle changes biotic communities, may precede more drastic potentially irreversible anthropogenic pressures.

Язык: Английский

Surprisingly good fit of pressure-based cropland condition map and bird census data at the national scale DOI Creative Commons
Eszter Tanács, Ákos Bede‐Fazekas, András Báldi

и другие.

Ecological Indicators, Год журнала: 2024, Номер 167, С. 112665 - 112665

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

0
Identification and use of suitable metrics for calling male count-based community assessments in amphibian monitoring in temperate Europe DOI Creative Commons
Andris Čeirāns, Mihails Pupiņš, Artūrs Škute

и другие.

Ecological Indicators, Год журнала: 2024, Номер 168, С. 112771 - 112771

Опубликована: Окт. 30, 2024

Язык: Английский

Процитировано

0
Interactive Effects of Anthropogenic Stressors on the Temporal Changes in the Size Spectrum of Lake Fish Communities DOI Creative Commons

Valentin Marin,

Julien Cucherousset, Gaël Grenouillet

и другие.

Ecology Of Freshwater Fish, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 11, 2024

ABSTRACT The size spectrum represents a powerful approach for quantifying the effects of environmental changes from individuals to communities in aquatic ecosystems. However, our understanding its temporal stability freshwater ecosystems is still limited. In present study, we used investigate responses 126 lake fish intensity three common anthropogenic stressors (i.e., global warming, nutrient loading and biological invasions) French natural lakes reservoirs over an average 5‐year time period. Using backward selection on full model including all possible slope, demonstrated that (i) increasing summer temperature shifted abundance towards largest classes, resulting flatter slope (ii) invasions were associated with shift smaller classes lakes, while opposite effect was observed reservoirs. addition, these two interacted determining structure communities, complicating what can reveal about stressor during monitoring programs. All predictors accounted limited part spectra, further investigations are needed fully apprehend interplay between human‐induced drivers spectra contrasting conditions.

Язык: Английский

Процитировано

0
Freshwater Biota as Indicators of Impact: Case Studies and Examples of the Major Groups in Surface Water Assessment DOI
John P. Simaika, Isabel Bishop, Martyn Kelly

и другие.

Elsevier eBooks, Год журнала: 2022, Номер unknown, С. 20 - 34

Опубликована: Янв. 1, 2022

Язык: Английский

Процитировано

1
Population response of pelagic fishes (ciscoes, Coregonus spp.) to rapidly accelerated eutrophication of an originally oligotrophic deep lake DOI Creative Commons
Thomas Mehner, Sabine Wollrab, Thomas Gonsiorczyk

и другие.

Inland Waters, Год журнала: 2023, Номер 13(4), С. 596 - 613

Опубликована: Окт. 2, 2023

Not much is known about early responses of pelagic fish populations to rapidly increasing nutrient concentrations in originally oligotrophic lakes. Here we report on population parameters a pair ciscoes (Coregonus spp.) exposed accelerating eutrophication the deep (69.5 m) and stratified Lake Stechlin (NE Germany), which total phosphorus (TP) concentration increased from 15 mg m-3 >60 within 10 years. With TP concentrations, lower Secchi depths, declining oxygen deeper water layers, higher phytoplankton zooplankton biomass were observed. Correlation analyses supported strong bottom-up directed effects primary secondary producers, negative quality parameters. Annual hydroacoustic records midwater trawling showed an increase average individual size. There was no temporal trend biomass, but observed cyclic annual fluctuations. Diel vertical migration (DVM) amplitudes declined, primarily by occurrence shallower waters than previous years during daytime. We propose that release density-dependent food limitation, due plankton abundances, resulted sizes for both cisco species, turn increasingly blurs species discrimination because length distributions are longer substantially different. Our data show value long-term lake monitoring including surveys, understand initially subtle changes biotic communities, may precede more drastic potentially irreversible anthropogenic pressures.

Язык: Английский

Процитировано

0