Results 91 to 100 of about 20,124 (185)
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 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
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
基于贝叶斯权重估计方法的两栖动物多样性分析——以广东粤北华南虎省级自然保护区为例
野生动物学报野外调查是采集生物多样性数据最常用的方法，但在实际应用中，样本量总是有限的，部分稀有种可能不会出现在样本中。因此野外调查结果往往无法全面地反映研究区域的整体物种多样性。为充分掌握广东粤北华南虎省级自然保护区两栖动物多样性现状，于2022年6—10月采用样线法对该保护区的两栖动物展开调查；基于野外调查数据，采用贝叶斯权重估计方法估计保护区的物种总数目。通过野外调查记录到26种两栖动物，结合往期的调查资料，保护区现记录有35种两栖动物。贝叶斯权重估计方法的估计结果为34种，与保护区现有的两栖动物多样性记录
康桐铭 +6 more
doaj
野生动物学报, 2020 鸟类是湿地生态系统的重要组成部分,鸟类资源调查与监测是国家湿地公园的基础工作,对于开展湿地生物多样性保护具有重要意义。于2018年1月至2019年3月对贵州贵阳阿哈湖国家湿地公园的鸟类进行了调查,结合前期调查和文献资料,统计湿地公园分布的鸟类物种,并进行了分析,结果如下:(1)湿地公园分布的鸟类共计18目55科188种,其中,本次调查记录鸟类131种。(2)国家重点保护鸟类14种,列入CITES附录I的鸟类1种,列入附录II的14种,IUCN近危(NT)物种2种。(3)鸟类种数最多的是雀形目 ...
张海波 1 +2 more
doaj
Relationship between riparian plant diversity and soil factors in the middle and lower reaches of the Yellow River [PDF]
[Objective] The relationship between species diversity and soil factors in riparian zone is important to maintain the stability of riparian ecosystems. The purpose of the study is to reveal the relationship between species diversity and soil factors in
LI Ya +3 more
core +1 more source
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
野生动物学报, 2018 美国的野生动植物保护法律《雷斯法案》和《濒危物种法》体现了对他国物种的关切,但本质上是保护本国野生动植物资源的法律。2013年以来,美国开始着力用全球性视野看待和应对物种多样性危机,把濒危物种保护工作提升到国家战略层面,制定了野生动植物国家战略。该战略实际上是美国以领导者角色自居,为带领其他国家保护所有物种而制定的全球性战略,意在借此加强美国的影响力和领导力,实现本国国家利益。据其2015年国家战略进展报告,美国主要以非洲象和非洲犀等标志性物种为目标和抓手,主导和促进全球性的努力和合作 ...
秦红霞 余 娟 杨玉芳
doaj
, 2013 根据2010年和2011年对烟台近海大型底栖动物的周年调查资料,采用优势度指数、物种多样性指数及Cluster聚类和MDS排序方法,进行群落特征和群落演替情况的。研究。结果表明,该海域共采集大型底栖动物176种,其中优势类群为多毛类。群落中的优势种主要包括短叶索沙蚕和不倒翁虫。烟台近海年平均生物量和丰度分别为16.72g/m~2和1022ind/m~2,且存在季节性差异。丰富度指数(D)、均匀度指数(J)和多样性指数(H')的年平均值分别为2.30、0.70和1.91 ...
李宝泉, 王全超
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MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou +8 more
wiley +1 more source