Results 121 to 130 of about 56,474 (245)
Lessons from an eradication under multiple constraints of an island rat population of record density
Conservation Biology, EarlyView.Abstract Invasive rats threaten island biodiversity, disrupting ecosystems and endangering native species. Although rat eradication has succeeded on many islands, tropical islands present unique management challenges. Strict regulations and financial constraints on some tropical islands further limit proven eradication methods, complicating rodent ...
Tatiane Micheletti +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 区域生态安全格局是一个新近提出的概念,其理论尚在发展之中。研究以西气东输工程陕西段为例,从保证管道安全和解决工程中的生态问题入手,提出了管道工程沿线区域生态安全格局的设计框架,对生态安全格局理论进行了初步的应用。制图分析得出陕西段主要生态系统有丘陵黄绵土农田生态系统、丘陵黄绵土丛生禾草草原生态系统、平原黄绵土农田生态系统、沙地生态系统等。水土流失敏感性分析显示3个标段均有超过80%区域属敏感区,水土流失很严重。生态系统中关键生态单元主要有6处,包括丘陵沟壑区梁峁穿越,腰岘穿越,中小冲沟穿越,河流凹岸 ...
高启晨 陈利顶 吕一河 李国强 姜昌亮
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Development of Simultaneous Determination Method for Multi-categorized Organic Pollutants in Sediment and Its Application to the Study of Combined Pollution Characteristics of the Jiulong RiverEstuary [PDF]
, 2015 我国沿海社会经济相对发达，河口区域承接着流域各类生产、生活活动排放的大量有机污染物。沉积物作为水环境的重要组成部分，既是污染物的主要归宿，又是污染物迁移的载体和二次污染来源。河口沉积物中频繁检出的多环芳烃（PAHs）、多氯联苯（PCBs）、多溴联苯醚（PBDEs）、农药和抗生素等有机污染物严重威胁着河口生态环境。本论文以PAHs、PCBs、PBDEs、农药和抗生素5类122种有机污染物为目标物，运用色谱-串联质谱技术建立了其在沉积物中的分组同时分析方法，并且应用于福建九龙江河口表层和柱状沉积物样品的分析，
易启同
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A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
Study of NPZD Ecosystem Dynamical Model Application in Beibu Gulf [PDF]
, 2016 北部湾是我国重要的海湾和渔场，被誉为我国“最后的洁净”，近年来在我国沿海经济发展的成就和潜力倍受关注，然而工业化、城镇化进程的持续加快，也给北部湾的生态环境带来了巨大压力。鉴于此，研究北部湾生态系统的时空分布特征及其对动力环境变化的响应过程具有重要意义，可为我国北部湾生态环境保护建设、资源管理开发和经济发展策略制定等提供科学参考依据。 本文在已建立的“北部湾三维水动力—NPZD生态耦合模型”的基础上进行了进一步的拓展和应用研究，结合历年观测数据、卫星遥感数据和数值模型结果 ...
郑艺妃
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Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves
Conservation Biology, EarlyView.Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey +39 more
wiley +1 more source
A Case Study on the Evolution Mechanism of Ambidextrous Competence of Business Incubator among Entrepreneurial Incubation Ecosystem [PDF]
, 2016 科技企业孵化机构在扶持区域创业创新活动中的重要性不言而喻。在中国经济转型的大背景下，创业活动之繁荣前所未有，原先服务单一的孵化机构已无法适应创业企业多样化的需求，正在积极向多方资源整合者的角色转变。在实践中，转型成功的孵化机构身上普遍具有同时开展利用式创新和探索式创新的双元能力。因此探索孵化机构发挥双元能力的过程，对促进我国孵化行业发展以及营造区域良好创业孵化生态至关重要。然而学界尚缺乏对孵化机构的双元能力的动态研究，导致科技孵化机构的孵化实践缺乏理论指导而陷入盲目摸索的尴尬状况 ...
许婷
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Conservation Biology, EarlyView.Abstract Wildlife reintroductions are socioecological processes entailing the intentional movement of organisms by people. In animal reintroductions, there is growing recognition of the importance of human dimensions and efforts to integrate these into reintroduction projects. To conceptually reframe reintroductions as processes of renewed coexistence (
Roger Edward Auster +3 more
wiley +1 more source
How much biotic nativeness matters across human demographic groups
Conservation Biology, EarlyView.Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley +1 more source
Evaluation System of Marine Protected Area Based on Social-ecological Systems（SESs） [PDF]
, 2016 海洋保护区是保护典型海洋生态系统和生物多样性、拯救珍稀濒危物种的重要工具。目前海洋保护区数量和面积不断增加，但许多海洋保护区并未得到有效的管理，“纸上公园”式的保护区仍大量存在，保护效果不理想。保护区管理效果差的重要原因之一是缺乏定期的跟踪或对比评估，对管理中存在的问题认识不清；因此开展保护区评估对促进管理行动的适应性调整、提升管理水平非常重要。 当前保护区管理效果评估研究存在的主要问题是：评估研究对象以陆地类型的保护区为主，缺乏适用于海洋保护区特性的评估体系；评估偏重管理过程 ...
洪晓巧
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