Assessment of eutrophication in Skagerrak coastal waters using oxygen consumption in fjordic basins

被引:19
作者
Aure, J [1 ]
Danielssen, D [1 ]
Saetre, R [1 ]
机构
[1] INST MARINE RES,FLODEVIGEN MARINE RES STN,N-4817 HIS,NORWAY
关键词
coastal eutrophication; fjordic sill basins; oxygen;
D O I
10.1006/jmsc.1996.0080
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The mean rates of oxygen consumption have been estimated for 9 different fjordic sill basins in 1990 on the Norwegian Skagerrak coast. The mean oxygen consumption rate was about 50% higher than in similar basins on the west coast of Norway. The observations are in accordance with an empirical model from the Norwegian west coast, where mean oxygen consumption rate in sill basins is derived as a function of sill depth and mean basin depth. Historical oxygen observations suggest that increased oxygen consumption occurred in the first part of the 1980s. Due to intensive water exchange above sill level and insignificant influence of local inputs of anthropogenic nutrients, increased oxygen consumption in the sill basins is most likely to be related to increased large scale eutrophication of the Skagerrak coastal waters. The natural low oxygen concentrations in many sill basins along the Skagerrak coast make them particular sensitive to increased oxygen consumption. (C) 1996 International Council for the Exploration of the Sea.
引用
收藏
页码:589 / 595
页数:7
相关论文
共 14 条
[1]   TRENDS IN NUTRIENT AND OXYGEN CONDITIONS WITHIN THE KATTEGAT - EFFECTS OF LOCAL NUTRIENT SUPPLY [J].
ANDERSSON, L ;
RYDBERG, L .
ESTUARINE COASTAL AND SHELF SCIENCE, 1988, 26 (05) :559-579
[2]   EXCHANGE OF WATER AND NUTRIENTS BETWEEN THE SKAGERRAK AND THE KATTEGAT [J].
ANDERSSON, L ;
RYDBERG, L .
ESTUARINE COASTAL AND SHELF SCIENCE, 1993, 36 (02) :159-181
[3]   QUANTITATIVE ESTIMATES OF THE EUTROPHICATION EFFECTS OF FISH FARMING ON FJORDS [J].
AURE, J ;
STIGEBRANDT, A .
AQUACULTURE, 1990, 90 (02) :135-156
[4]  
AURE J, 1993, SILL BASINS SKAGERRA
[5]  
AURE J, 1989, COASTAL SHELF SCI, V28, P56
[6]  
BAALSRUD K, 1991, 2638 NIVA
[7]   THE HUMAN IMPACT IN THE GERMAN BIGHT - EUTROPHICATION DURING 3 DECADES (1962-1991) [J].
HICKEL, W ;
MANGELSDORF, P ;
BERG, J .
HELGOLANDER MEERESUNTERSUCHUNGEN, 1993, 47 (03) :243-263
[8]   NEGATIVE OXYGEN TRENDS IN SWEDISH COASTAL BOTTOM WATERS [J].
ROSENBERG, R .
MARINE POLLUTION BULLETIN, 1990, 21 (07) :335-339
[9]  
SKJOLDAL HR, 1993, EUTROPHICATION ALGAL, P445
[10]   ON THE RESPONSE OF THE HORIZONTAL MEAN VERTICAL DENSITY DISTRIBUTION IN A FJORD TO LOW-FREQUENCY DENSITY-FLUCTUATIONS IN THE COASTAL WATER [J].
STIGEBRANDT, A .
TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY, 1990, 42 (05) :605-614