2篇
您的检索式：作者名="Larry B.Crowder"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 渔业对海洋生态系统的影响与生态系统水平的管理模式显示文摘渔业是影响海洋生态系统的最大因素之一。渔业是人类活动的一部分,渔业管理正从单一种群水平管理模式向海洋生态系统水平管理模式过渡。系统分析是理解各组分之间的联系、建立生态系统动态模式和制定管理方法的关键手段。生态系统水平的管理模式不但要考虑顺捕、休闲渔业、个体渔业和环境变化的影响,还要考虑直接和间接影响。这些影响可能是巨大的,很可能是难以预料的。渔业、环境多样性和气候变化的协同效应日益威胁着海洋生态系统,同时提升了综合治理的复杂性。本文讨论渔业的全球性影响,并提出一个用于管理海洋生态系统的生态学框架。 | 黄大明 邵海培 李如意 Larry B.Crowder | 2019 | 中国科技纵横2019，0，24： | 0 |
| 2 | Principles for managing marine ecosystems prone to tipping points显示文摘As climatic changes and human uses intensify,resource managers and other decision makers are taking actions to either avoid or respond to ecosystem tipping points,or dramatic shifts in structure and function that are often costly and hard to reverse.Evidence indicates that explicitly addressing tipping points leads to improved management outcomes.Drawing on theory and examples from marine systems,we distill a set of seven principles to guide effective management in ecosystems with tipping points,derived from the best available science.These principles are based on observations that tipping points(1)are possible everywhere,(2)are associated with intense and/or multifaceted human use,(3)may be preceded by changes in earlywarning indicators,(4)may redistribute benefits among stakeholders,(5)affect the relative costs of action and inaction,(6)suggest biologically informed management targets,and(7)often require an adaptive response to monitoring.We suggest that early action to preserve system resilience is likely more practical,affordable,and effective than late action to halt or reverse a tipping point.We articulate a conceptual approach to management focused on linking management targets to thresholds,tracking early-warning signals of ecosystem instability,and stepping up investment in monitoring and mitigation as the likelihood of dramatic ecosystem change increases.This approach can simplify and economize management by allowing decision makers to capitalize on the increasing value of precise information about threshold relationships when a system is closer to tipping or by ensuring that restoration effort is sufficient to tip a system into the desired regime. | Kimberly A.Selkoe Thorsten Blenckner Margaret R.Caldwell Larry B.Crowder Ashley L.Erickson Timothy E.Essington James A.Estes Rod M.Fujita Benjamin S.Halpern Mary E.Hunsicker Carrie V.Kappel Ryan P.Kelly John N.Kittinger Phillip S.Levin John M.Lynham Megan E.Mach Rebecca G.Martone Lindley A.Mease Anne KSalomon Jameal F.Samhouri Courtney Scarborough Adrian C.Stier Crow White Joy Zedler | 2015 | Ecosystem Health and Sustainability2015，1，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员