Impacts of habitat-specific benthic fishing compared to those of short-term induced variability by environmental drivers in a turbulent Baltic Sea environment

被引：4

作者：

Nielsen, J. Rasmus ^{[1
]}

Vastenhoud, Berthe M. J. ^{[1
]}

Bossier, Sieme ^{[1
]}

Mohlenberg, Flemming ^{[2
]}

Christensen, Asbjorn ^{[1
]}

Diekman, Rabea ^{[3
,4
]}

Dinesen, Grete E. ^{[1
]}

Eigaard, Ole R. ^{[1
]}

Gogina, Mayya ^{[5
]}

Zettler, Michael L. ^{[5
]}

Darr, Alexander ^{[5
]}

Bastardie, Francois ^{[1
]}

机构：

[1] Tech Univ Denmark, Natl Inst Aquat Resources DTU Aqua, DK-2800 Lyngby, Denmark

[2] DHI AS DHI Water Environm Hlth, DK-2970 Horsholm, Denmark

[3] Univ Appl Sci Bremerhaven, D-27568 Bremerhaven, Germany

[4] Thunen Inst Fisheries Ecol, D-27572 Bremerhaven, Germany

[5] Leibniz Inst Balt Sea Res Warnemunde, D-18119 Rostock, Germany

来源：

FISHERIES RESEARCH | 2023年 / 257卷

关键词：

Benthic habitat fishing impact; Environmental drivers and conditions; Short term variability; Quantitative community impact indicators; Multivariate statistical analysis; SOFT-BOTTOM BENTHOS; TRAWLING DISTURBANCE; GLOBAL ANALYSIS; NORTH-SEA; BIODIVERSITY; SEDIMENT; RECOVERY; COMMUNITIES; INDICATORS; MACROFAUNA;

D O I：

10.1016/j.fishres.2022.106514

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The short term impacts of fishing pressure were compared with the variability induced by environmental drivers on quantitative benthic community impact indicators. The different pressures were evaluated through comparative multifactor statistical analyses of their effects on macrofauna indicators in a Baltic Sea area with high natural disturbance. The area is exposed to a wide range of fishing intensities from long term non-fished areas to seasonal and annually frequently fished areas. Such evaluations are important for comparing the in-fluence and short term variability of impact indicators from both demersal fisheries and the environment, including benthic community biodiversity (species richness), density (abundance in number of individuals), biomass, and average individual mean weight, with high spatio-temporal resolution. Environmental drivers include near bottom water current speed, salinity, temperature, and dissolved oxygen concentration, considering habitat specific and seasonal conditions. Demersal fishing-induced impacts were evident for all indicators. The highest fishing impacts were estimated in soft muddy and sandy habitats and in the second quarter of the year for all indicators, considering complex interactions. All environmental drivers, especially, current speed, had sig-nificant impacts on all indicators. The significant influences and short term variability caused by environmental drivers were of the same or larger order of magnitude as fishing impacts. Consequently, the short term influence of environmental drivers and seasonal differences in fishing pressure need to be considered when using quan-titative benthic fishing impact indicators and identifying areas that are more or less resilient to fishing in relation to short-and long-term fisheries management plans.

引用

页数：15