کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6319806 1619718 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling the effects of stranding on the Atlantic salmon population in the Dale River, Norway
ترجمه فارسی عنوان
مدل سازی اثرات شیب بر جمعیت ساحلی اقیانوس اطلس در رود دیل، نروژ
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Long-term impact of stranding of juvenile Atlantic salmon on the population
- Implementation of stranding into individual-based population model
- Five scenarios dependent on fish life-stage, season and light level
- Largest negative effect on abundance for hydropeaking during winter daylight
- Sensitivity analysis suggests greater impact of stranding of older juveniles.

Rapid dewatering in rivers as a consequence of hydropower operations may cause stranding of juvenile fish and have a negative impact on fish populations. We implemented stranding into an Atlantic salmon population model in order to evaluate long-term effects on the population in the Dale River, Western Norway. Furthermore, we assessed the sensitivity of the stranding model to dewatered area in comparison to biological parameters, and compared different methods for calculating wetted area, the main abiotic input parameter to the population model. Five scenarios were simulated dependent on fish life-stage, season and light level. Our simulation results showed largest negative effect on the population abundance for hydropeaking during winter daylight. Salmon smolt production had highest sensitivity to the stranding mortality of older juvenile fish, suggesting that stranding of fish at these life-stages is likely to have greater population impacts than that of earlier life-stages. Downstream retention effects on the ramping velocity were found to be negligible in the stranding model, but are suggested to be important in the context of mitigation measure design.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 573, 15 December 2016, Pages 574-584
نویسندگان
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