Effects of Climate‐Responsive, Fjordscape, and Aquaculture‐Associated Environmental Drivers on Fjord Hyperbenthic Community Structure DOI Creative Commons

S. Kjelstad,

Anne Gro Vea Salvanes, Fabian Zimmermann

et al.

Journal of Geophysical Research Oceans, Journal Year: 2025, Volume and Issue: 130(4)

Published: April 1, 2025

Abstract Marine community sensitivity to climate change can be informed by examining patterns along current environmental gradients. Fjords provide natural laboratories for such studies due their variable oceanographic conditions that differ from basin basin. Bottom trawl samples were collected 17 fjord basins and nearshore coastal stations (59–63°N) 2011 2022. We examined how climate‐responsive (temperature, salinity, oxygen) fixed variables (bottom depth, sill distance coastline) as well aquaculture impact score (calculated using biomass capacity within a 5 km radius) correlate with differences in hyperbenthic biomass, diversity, composition. focused on fish crustacean species composition, the distribution of recently proliferating jellyfish, Periphylla periphylla . Our results indicate (e.g., bottom depth depth) are important predictors biodiversity; biodiversity decreased was highest 151–250 m deep sills. Fish negatively correlated coastline. Four community‐types identified which separated mainly geographic location (fjord or coastal), presence P. found limited evidence aquaculture‐associated drivers being strong differences. The exception temperature. Oxygen not significant predictor any patterns. Since West‐Norwegian common N. Atlantic, study offers broader insights into change.

Language: Английский

Effects of Climate‐Responsive, Fjordscape, and Aquaculture‐Associated Environmental Drivers on Fjord Hyperbenthic Community Structure DOI Creative Commons

S. Kjelstad,

Anne Gro Vea Salvanes, Fabian Zimmermann

et al.

Journal of Geophysical Research Oceans, Journal Year: 2025, Volume and Issue: 130(4)

Published: April 1, 2025

Abstract Marine community sensitivity to climate change can be informed by examining patterns along current environmental gradients. Fjords provide natural laboratories for such studies due their variable oceanographic conditions that differ from basin basin. Bottom trawl samples were collected 17 fjord basins and nearshore coastal stations (59–63°N) 2011 2022. We examined how climate‐responsive (temperature, salinity, oxygen) fixed variables (bottom depth, sill distance coastline) as well aquaculture impact score (calculated using biomass capacity within a 5 km radius) correlate with differences in hyperbenthic biomass, diversity, composition. focused on fish crustacean species composition, the distribution of recently proliferating jellyfish, Periphylla periphylla . Our results indicate (e.g., bottom depth depth) are important predictors biodiversity; biodiversity decreased was highest 151–250 m deep sills. Fish negatively correlated coastline. Four community‐types identified which separated mainly geographic location (fjord or coastal), presence P. found limited evidence aquaculture‐associated drivers being strong differences. The exception temperature. Oxygen not significant predictor any patterns. Since West‐Norwegian common N. Atlantic, study offers broader insights into change.

Language: Английский

Citations

0