Survival and behaviour of Atlantic salmon smolts passing a run-of-river hydropower facility with a movable bulb turbine

被引：23

作者：

Thorstad, E. B. ^{[1
]}

Havn, T. B. ^{[1
]}

Saether, S. A. ^{[1
]}

Heermann, L. ^{[2
]}

Teichert, M. A. K. ^{[2
]}

Diserud, O. H. ^{[1
]}

Tambets, M. ^{[3
]}

Borcherding, J. ^{[2
]}

Okland, F. ^{[1
]}

机构：

[1] Norwegian Inst Nat Res NINA, Trondheim, Norway

[2] Univ Cologne, Inst Zool Gen Ecol & Limnol, Cologne, Germany

[3] Wildlife Estonia, Tartu, Estonia

来源：

FISHERIES MANAGEMENT AND ECOLOGY | 2017年 / 24卷 / 03期

关键词：

migration speed; mortality; movable bulb turbine; radio tag; surface bypass; telemetry; TRUTTA L. SMOLTS; SALAR L; DOWNSTREAM MIGRATION; SILVER EELS; FISH; PASSAGE; PLANTS; SIZE;

D O I：

10.1111/fme.12216

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Downstream migration of radio-tagged Atlantic salmon smolts, Salmo salar L., was studied in the Kinzig, Germany, to examine effects of passing a run-of-river hydropower station with a movable bulb turbine. Immediate mortality for smolts passing the power station was low (3%-6%), probably facilitated by a curved rack in front of the turbine and the possibility to pass over it. Mortality in the impounded stretch above the power station was also low (1.5% extra mortality compared to a control stretch). The combined mortality due to hydropower was 5%-8%, excluding delayed effects. Most smolts followed the main flow passing through the turbine area (94%). Only few used a fishway (4%) or a nearby millstream (2%). Migration speed was slowed down at the power station, but the passage only caused a short delay (average/median 8.6/1.3hr). However, even low mortality and short delays at several power stations and reservoirs may have considerable cumulative effects.

引用

页码：199 / 207

页数：9

共 37 条

[1] Movements of two strains of radio tagged Atlantic salmon, Salmo salar L., smolts through a reservoir [J].