Academic Journal
Effects of increased specialization on revenue of Alaskan salmon fishers over four decades
| العنوان: | Effects of increased specialization on revenue of Alaskan salmon fishers over four decades |
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| المؤلفون: | Ward, Eric J., Anderson, Sean C., Shelton, Andrew O., Brenner, Richard E., Adkison, Milo D., Beaudreau, Anne H., Watson, Jordan T., Shriver, Jennifer C., Haynie, Alan C., Williams, Benjamin C. |
| المساهمون: | Punt, Andre |
| المصدر: | Journal of Applied Ecology ; volume 55, issue 3, page 1082-1091 ; ISSN 0021-8901 1365-2664 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2017 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Theory and previous studies have shown that commercial fishers with a diversified catch across multiple species may experience benefits such as increased revenue and reduced variability in revenue. However, fishers can only increase the species diversity of their catch if they own fishing permits that allow multiple species to be targeted, or if they own multiple single‐species permits. Individuals holding a single permit can only increase catch diversity within the confines of their permit (e.g. by fishing longer or over a broader spatial area). Using a large dataset of individual salmon fishers in Alaska, we build a Bayesian variance function regression model to understand how diversification impacts revenue and revenue variability, and how these effects have evolved since the 1970s. Applying these models to six salmon fisheries that encompass a broad geographic range and a variety of harvesting methods and species, we find that the majority of these fisheries have experienced reduced catch diversity through time and increasing benefits of specialization on mean individual revenues. One factor that has been hypothesized to reduce catch diversity in salmon fisheries is large‐scale hatchery production. While our results suggest negative correlations between hatchery returns and catch diversity for some fisheries, we find little evidence for a change in variability of annual catches associated with increased hatchery production. Synthesis and applications . Despite general trends towards more specialization among commercial fishers in Alaska, and more fishers exclusively targeting salmon, we find that catching fewer species can have positive effects on revenue. With increasing specialization, it is important to understand how individuals buffer against risk, as well as any barriers that prevent diversification. In addition to being affected by environmental variability, fishers are also affected by economic factors including demand and prices offered by processors. Life‐history variation in the species ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1111/1365-2664.13058 |
| الاتاحة: | http://dx.doi.org/10.1111/1365-2664.13058 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1365-2664.13058 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.13058 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.5707A02E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1111/1365-2664.13058 |
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