Results 101 to 110 of about 24,392 (236)
Using customs data to understand overlooked trade in non‐CITES birds between Africa and Asia
Conservation Biology, EarlyView.Abstract The international trade in live birds poses risks to animals, people, and biodiversity. To effectively mitigate these risks, decision‐makers require information on the volume, dynamics, and direction of trade. Despite Africa once being the largest exporter of birds by region, very little data exist on recent trade in live birds not listed on ...
Alisa Davies +4 more
wiley +1 more source
Study on Integrated Coastal Zone Management Strategy for Marine Biodiversity Conservation in Quanzhou Bay [PDF]
, 2010 海洋生物多样性是伴随着地球演化，经历了数十亿年生物与环境相互作用和生物间协同进化的结果。海洋生物多样性的存在不但具有现实的合理性，而且对人类的生存与持续发展有着极其重要的意义。但是，随着地球上人口的增加、工业和科学技术的发展以及人类不断提高生活水平的愿望，海洋生物多样性与陆地生物多样性一样面临着严重的威胁。在此背景下，海岸带综合管理被国际上确认为保护海洋生物多样性最有效的途径之一，世界上诸多国家已纷纷考虑采用海岸带综合管理的方法和手段去解决生物多样性保护的问题。20世纪90年代以来 ...
郭境
core
There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy
Policy Studies Journal, EarlyView.ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 通过分析克拉玛依农业开发区水土性状、荒漠植被演替规律和群落多样性,了解到区内植物的生长更新主要靠大气降水来维系,而土壤理化指标中的有机质、全N和全K含量增加是植物群落发展多样性的胁迫因素。与之相反,一定限度下的较高pH和粒度值,则可促进植物多样性水平的提高。分析结果还表明,土壤的全盐、全P和水分是影响植物多样性的潜在因素。
钱亦兵 周华荣 徐曼 蒋进 王雪芹 李东梅 赵从举
doaj
Research on Biological Nitrogen Removal by Aerobic Denitrification Process at Low-temperature and the Psychrolerant Mechanism of Functional Bacteria [PDF]
, 2015 本研究针对传统生物脱氮工艺存在能耗大、基建和运行费用高、低温运行效果差等缺陷，采用好氧反硝化工艺处理人工模拟含氮污水，实现好氧条件下同一反应器内全程生物脱氮过程。采用逐步提高曝气时间及曝气强度的方式，以KNO3为氮源，以普通城市污水处理厂的活性污泥为接种泥，实现了好氧反硝化菌的富集及工艺的常温启动。在此基础上，研究了温度对好氧反硝化工艺的性能影响，及低温环境下反应器运行条件的调控效果。此外，针对分离得到的异养硝化-好氧反硝化纯菌的耐冷特性，通过测定其在短期降温过程中ATP含量的变化情况 ...
王语颖
core
Veterinary Dermatology, EarlyView.ABSTRACT Background Canine atopic dermatitis (cAD) is a multifactorial, inherited skin disease, estimated to affect ≤ 15% of dogs. Studies of skin messenger mRNA in cAD currently use invasive methods, including blood sampling and biopsy collection, whilst advances in human atopic dermatitis study methodology have demonstrated reliable use of minimally ...
Xavier Langon +5 more
wiley +1 more source
A Study on Global Biodiversity Policy Change——Based on the Advocacy Coalition Framework [PDF]
, 2017 生物多样性及生态系统的服务功能是社会经济得以持续运行的根基。然而，随着人类活动不断扩张，生境退化、气候异常、污染破坏、外来物种入侵等外在因素威胁，物种资源多样性正在遭受严峻挑战，生物多样性丧失已经成为全球环境治理的热点议题之一。全球生物多样性政策自20世纪初以来经历了显著变迁，其实质是一个动态、交互、反馈的过程。迄今为止，全球范围内生物多样性政策先后经历了国际科学界的关注及新议题产生、政策化阶段、谈判修正及全面开展等三个时期，即由科学回应到社会政治回应的过程 ...
赵婧懿
core
Use of a Cytobrush for Sampling the Ear Canal of Dogs With Otitis Externa
Veterinary Dermatology, Volume 37, Issue 2, Page 227-235, April 2026.Cytological examination of the ear canal is essential for evaluating dogs with otitis externa (OE). The conventional sampling method uses a swab. However, the cytobrush (gynaecological cervical brush), already used for cytological collection from other anatomical sites, has not been adequately investigated for this purpose in dogs with OE.
Nicoly Radaeli Atanasio +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2004 鄱阳湖是中国最大的淡水湖泊,是吞吐性河成湖,被称为长江的天然水位调节器。作为一种特殊的湿地生态系统类型,鄱阳湖湿地效益类型丰富多样。主要的生态功能有涵养水源、调蓄洪水,调节气候,降解污染,固定C释放O2,控制侵蚀、保护土壤,参与营养循环,作为生物栖息地。主要直接的产品用途有储水、供水,生产湿地植物产品,生产湿地动物产品,能源生产,水运,休闲/旅游,作为研究与教育用地。鄱阳湖湿地属性主要有生物多样性,社会文化重要性。
崔丽娟
doaj +2 more sources
野生动物学报两栖和爬行类动物被认为是环境健康的重要指示类群。为掌握杭州重要城市生态系统中生物多样性状况，本研究对西湖风景名胜区和西溪国家湿地公园两处核心地区的两栖爬行动物进行多样性调查与评估。本研究在调查区域利用样线法和样方法开展了3个季节的调查，记录到两栖类2目8科21种，爬行类1目8科23种；除上述本土物种外，还发现寺庙的放生池中有一定数量的龟类（6种），其中有入侵物种巴西龟（Trachemys scripta elegans）和蛇鳄龟（Chelydra serpentina）。物种多样性特征分析结果表明 ...
江志 +5 more
doaj +2 more sources