Harvesting strategies for Norwegian spring-spawning herring
Article Abstract:
The relative contribution of natural fluctuation in the environment and fishing to the collapse of the Norwegian spring-spawning herring stock during the middle of the last century is analyzed. A suggestion that proportional threshold strategy with a threshold around 14 billion individuals, combined with a harvest of 30-40% of the individuals above this threshold would give a sustainable yield with little annual variation.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Bootstrap methods for estimating spatial synchrony of fluctuating populations
Article Abstract:
Methods for estimating spatial correlations used in population ecology are examined. The best results are achieved for parametric bootstrapping, a result that strongly emphasize the importance of defining and estimating as proper population model when studying spatial processes.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Bootstrap methods for estimating spatial synchrony of fluctuating populations: An addendum
Article Abstract:
Bootstrap methods for estimating spatial correlations used in population ecology is described and examined. Results reveal that resampling of locations performed badly, with true coverage level as low as 30-40%, especially for small correlations at long distances.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Hatching asynchrony as a bet-hedging strategy-an offspring diversity hypothesis. Are high Arctic terrestrial food chains really that simple? - The Bear Island food web revisited
- Abstracts: Population dynamics of Microtus pennsylvanicus in corridor-linked patches. Dispersal and individual quality in a long lived species
- Abstracts: Species evenness and productivity in experimental plant communities. Species richness, temporal variability and resistance of biomass production in a Mediterranean grassland
- Abstracts: Co-occurrence patterns of some small-bodied freshwater fishes in Southwestern France: Implications for fish conservation and environmental management