Benefits of threshold strategies and age-selective harvesting in a fluctuating fish stock of Norwegian spring spawning herring Clupea harengus
نویسندگان
چکیده
منابع مشابه
Sustainable harvesting in variable environments
Harvesting strategies in a fish stock dominated by low-frequency variability: The Norwegian spring-spawning herring (Clupea harengus). Marine Resource Economics 18: 263–274. Enberg, K. 2005. Benefits of threshold strategies coupled with age-selective harvesting in a highly variable fish stock: Norwegian spring-spawning herring (Clupea harengus) as an example. Marine Ecology Progress Series, in ...
متن کاملStock–environment recruitment models for Norwegian spring spawning herring (Clupea harengus)
Different stock–environment recruitment models for Norwegian spring spawning herring (Clupea harengus) are fitted to a time series of spawning stock, recruitment, and temperature data extending back to 1907. In addition to the traditional temperature index from the Barents Sea (the average annual temperature in the Kola transect), we also developed a new index based on the temperature in the la...
متن کاملMaturity changes in Norwegian spring-spawning herring Clupea harengus: compensatory or evolutionary responses?
The stock of Norwegian spring-spawning herring Clupea harengus collapsed to a state of commercial extinction in the 1960s, probably due to both overexploitation and unfavourable climatic conditions. Since the 1980s, the stock has fully recovered. Following the collapse, the fish matured at much earlier ages and somewhat larger sizes than previously. Currently, age and size at 50% maturity have ...
متن کاملCharacteristics of the Norwegian Coastal Current during Years with High Recruitment of Norwegian Spring Spawning Herring (Clupea harengus L.)
Norwegian Spring Spawning herring (NSSH) Clupea harengus L. spawn on coastal banks along the west coast of Norway. The larvae are generally transported northward in the Norwegian Coastal Current (NCC) with many individuals utilizing nursery grounds in the Barents Sea. The recruitment to this stock is highly variable with a few years having exceptionally good recruitment. The principal causes of...
متن کاملGenetically different Atlantic herring Clupea harengus spawning waves
Putative spawning waves of Atlantic herring Clupea harengus were collected from 4 locations and genetically compared using 9 microsatellite loci. Shelf-scale (100s km) spatial differences were measured (max FST = 0.01, p < 0.001) and 1 sub-annual temporal difference (FST = 0.0058, p = 0.001) was revealed between spawning fish (predominantly comprising the same year-class) collected, 6 d apart, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2005
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps298277