Declines in Brook Trout Abundance Linked to Atmospheric Warming in Maryland, USA DOI Creative Commons
Nathaniel P. Hitt,

Karli M. Rogers,

Zachary A. Kelly

et al.

Hydrobiology, Journal Year: 2024, Volume and Issue: 3(4), P. 310 - 324

Published: Oct. 1, 2024

Salmonid fishes provide an important indicator of climate change given their reliance on cold water. We evaluated temporal changes in the density stream-dwelling brook trout (Salvelinus fontinalis) from surveys conducted over a 36-year period (1988–2023) by Maryland Department Natural Resources Eastern North America. Nonparametric trend analyses revealed decreasing densities adult fish (age 1+) 19 sites (27%) and increases 5 (7%). In contrast, juvenile 0) decreased 4 (6%) increased 10 (14%). Declining trends were related to atmospheric warming rates during study period, this relationship was stronger than effects land use or non-native brown trout. generally with elevation but not air temperature change. Our analysis reveals significant several populations recent decades implicates conditions population declines. findings also suggest importance for survival rather recruitment limitation dynamics.

Language: Английский

Environmental DNA surveys can determine in-stream dominance of non-native brook charr Salvelinus fontinalis over native brown trout Salmo trutta DOI Creative Commons

Andreas Broman,

William F. Englund,

Niclas Gyllenstrand

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 173, P. 113407 - 113407

Published: March 31, 2025

Language: Английский

Citations

0
Declines in Brook Trout Abundance Linked to Atmospheric Warming in Maryland, USA DOI Creative Commons
Nathaniel P. Hitt,

Karli M. Rogers,

Zachary A. Kelly

et al.

Hydrobiology, Journal Year: 2024, Volume and Issue: 3(4), P. 310 - 324

Published: Oct. 1, 2024

Salmonid fishes provide an important indicator of climate change given their reliance on cold water. We evaluated temporal changes in the density stream-dwelling brook trout (Salvelinus fontinalis) from surveys conducted over a 36-year period (1988–2023) by Maryland Department Natural Resources Eastern North America. Nonparametric trend analyses revealed decreasing densities adult fish (age 1+) 19 sites (27%) and increases 5 (7%). In contrast, juvenile 0) decreased 4 (6%) increased 10 (14%). Declining trends were related to atmospheric warming rates during study period, this relationship was stronger than effects land use or non-native brown trout. generally with elevation but not air temperature change. Our analysis reveals significant several populations recent decades implicates conditions population declines. findings also suggest importance for survival rather recruitment limitation dynamics.

Language: Английский

Citations

0