| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1086/701631 |
| Meeting Yield and Conservation Objectives by Harvesting Both Juveniles and Adults. | |
| Lundström N; Loeuille N; Meng X; Bodin M; Brännström Å | |
| 发表日期 | 2019 |
| 出处 | The American Naturalist |
| 出版年 | 2019 |
| 语种 | 英语 |
| 摘要 | Sustainable yields that are at least 80% of the maximum sustainable yield are sometimes referred to as “pretty good yields” (PGY). The range of PGY harvesting strategies is generally broad and thus leaves room to account for additional objectives besides high yield. Here, we analyze stage-dependent harvesting strategies that realize PGY with conservation as a second objective. We show that (1) PGY harvesting strategies can give large conservation benefits and (2) equal harvesting rates of juveniles and adults is often a good strategy. These conclusions are based on trade-off curves between yield and four measures of conservation that form in two established population models, one age-structured model and one stage-structured model, when considering different harvesting rates of juveniles and adults. These conclusions hold for a broad range of parameter settings, although our investigation of robustness also reveals that (3) predictions of the age-structured model are more sensitive to variations in parameter values than those of the stage-structured model. Finally, we find that (4) measures of stability that are often quite difficult to assess in the field (e.g., basic reproduction ratio and resilience) are systematically negatively correlated with impacts on biomass and size structure, so that these later quantities can provide integrative signals to detect possible collapses. |
| 主题 | Evolution and Ecology (EEP) |
| 关键词 | fisheries management, maximum sustainable yield, pretty good yield, Pareto front, resilience, size structure |
| URL | http://pure.iiasa.ac.at/id/eprint/15711/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/131579 |
| 推荐引用方式 GB/T 7714 | Lundström N,Loeuille N,Meng X,et al. Meeting Yield and Conservation Objectives by Harvesting Both Juveniles and Adults.. 2019. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| ArXiV-version_Lundst（2375KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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