Results 81 to 90 of about 18,066 (188)
Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
野生动物学报, 2021 鸟类多样性是生物多样性的重要组成部分，监测鸟类多样性利于了解环境对生物的影响，及时施加正向干预，保护鸟类及其栖息环境。2016—2018年夏季采用样线法对秦岭西段麦积山区域的繁殖鸟类进行了调查，共记录到鸟类12目36科94种，种类最多的是雀形目（67种，占7127%）；国家Ⅱ级重点保护鸟类9种，CITES附录8种鸟类；鸟类区系组成中，古北界鸟类有13种（占1383%），东洋界鸟类有23种（占2447%），广布种有57种（占6064%）。与其他生境相比，针阔叶混交林生境的鸟类物种最多（68种 ...
卢梦洁 1 包新康 1 李建亮 1 马东辉 1 伊剑锋 2 刘威 2
doaj
武夷山自然保护区生物多样性研究 1.小叶黄杨矮曲林物种多样性 [PDF]
, 2002 本文为武夷山自然保护区生物多样性GEF项目内容之一 ,调查了保护区内不同海拔高度的代表性森林生态系统的物种多样性 .小叶黄杨 (Buxussinicavar .parvifolia)林是中山矮曲林的代表性类型之一 .应用Shannon Wiener多样性指数、Pielou均匀度、Simpson指数和PIE对武夷山小叶黄杨群落高等植物进行了物种多样性研究 .结果表明前两者是较好的多样性指标 ,该群落的Shannon Wiener指数值为 1.80 6 8,Pielou均匀度为 49.6 7 ...
何建源 +10 more
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Conservation Biology, EarlyView.Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair +17 more
wiley +1 more source
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
Study on Change Law of Species Richness under Different Scales in Subtropical Evergreen Broad-leaved Forest [PDF]
, 2008 植物群落多样性主要指植物群落在组成、结构、功能和动态方面的多样化程度。从物种组成方面研究群落的组织水平或多样化程度是群落多样性最基础、最重要的研究内容。本文通过对不同面积的取样调查，详细、系统的研究了福建南靖南亚热带雨林与宁化牙梳山中亚热带常绿阔叶林群落物种多样性及其多样性在不同尺度下的变化规律。主要结论如下：(1)南靖南亚热带雨林样地中有维管束植物65科，109属，180种。其中蕨类植物14科，17属，23种；裸子植物2科，2属，2种；被子植物49科，90属，155种；双子叶植物39科，76属 ...
关少华
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Characteristics of the aboveground biomass and diversity along altitudinal gradients in alpine meadows of the upper reaches of the Yarlung Zangbo River [PDF]
[Objective] The Yarlung Zangbo River is the most important river in the Tibetan Plateau, and the study of aboveground biomass and species diversity of the Yarlung Zangbo River is of great significance for the understanding of grassland resources and ...
DONG Ruizhen +5 more
core +1 more source
Harnessing social media data to track species range shifts
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs and citizen science data remain heavily biased toward the Global North. Especially in megadiverse countries with limited biodiversity records, incorporating social media data can help address existing data gaps.
Shawan Chowdhury +15 more
wiley +1 more source
Use of a Cytobrush for Sampling the Ear Canal of Dogs With Otitis Externa
Veterinary Dermatology, EarlyView.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
武夷山自然保护区郁闭稳定甜槠林与人为干扰甜槠林物种多样性比较 [PDF]
, 2000 研究了武夷山自然保护区郁闭稳定甜槠林与人为干扰甜槠林的物种多样性 ,分别利用物种丰富度指数、Shannon- Wiener指数、Pielou均匀度和 Simpson指数作了比较。结果表明郁闭稳定甜槠林的物种丰富度为 11.370 4,Shannon- Wiener指数为 3.940 4,均匀度为 6 3.0 5 % ,Simpson指数为 6 .3740 ;人为干扰后的甜槠林的各项物种多样性指数值远比郁闭林高 ,分别为 2 0 .0 479、5 .5 431、78.44 %、2 1.716 3 ...
何建源 +4 more
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