Fishers’ and scientific histories: an example of consensus from an inland fishery
| Autor: | Ronaldo Angelini, Carolina V. Minte-Vera, Edson Kiyoshi Okada, Juliana Strieder Philippsen, Adriana Rosa Carvalho |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
River Basic premise Ecology Local knowledge 010604 marine biology & hydrobiology Fish species Bayesian analysis Effective management Aquatic Science Biology Oceanography 010603 evolutionary biology 01 natural sciences Monitoring program Data-limited fisheries Fishery Phylogeography Habitat Homogeneous Scale (social sciences) Interview Ecology Evolution Behavior and Systematics Reservoir |
| Zdroj: | Repositório Institucional da UFRN Universidade Federal do Rio Grande do Norte (UFRN) instacron:UFRN |
| Popis: | In this study we tested the basic premise that fishers’ knowledge provides similar perceptions about exploited stocks to data gathered by standardised monitoring in a small-scale commercial fishery. To that end, we compared temporal trends in catch and individual size for fish species between data obtained from interviews with fishers and a 25-year dataset from a landing monitoring program in the Itaipu Reservoir (Brazil). Fishers described with accuracy changes in species composition of the catches, from large migratory species of high commercial value (common before impoundment) to migratory species of low commercial value and sedentary species following damming. Temporal trends in catches reported by fishers and documented in the landing data matched for most species. Histories diverge when absolute values are involved, such as when fishers were asked to recall their largest catch. Fishers were homogeneous in their reports, indicating that instead of individual opinions, they revealed knowledge resulting from their observation and fishery experience. Fishers can be a reliable source of information for detecting changes in catches over time, especially when large-scale habitat changes have occurred within the time scale of a fisher career. Fishers may be key partners to be considered by managers in information gathering for effective management. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|