Results 21 to 30 of about 16,838 (184)
Assessing differences among elasmobranch nurseries to aid conservation based on a genomics framework
Conservation Biology, EarlyView.Abstract Elasmobranch nurseries often differ in environmental conditions, demographics, and use patterns. These differences affect the distribution of genetic variation among nurseries. However, conservation and management strategies often fail to account for such differences because they are difficult to characterize.
Dominic G. Swift +8 more
wiley +1 more source
野生动物学报, 2010 1998、1999年福建省安溪县林业局开展了鸟类、兽类、两栖爬行类资源调查,基本摸清了安溪县范围内陆生野生动物资源状况。通过区系研究,表明安溪县的鸟类、兽类、两栖爬行动物在动物地理分布上的特征以东洋界的组成成分为主,在动物的二级区系组成上鸟兽类以华南区成分为主,两栖爬行类以华中、华南区成分为主。动物区系中华中、华南区成分的混杂现象也较明显,表现出在动物地理分布上的过渡性、渗透性。
李三奕
doaj
牛山湖两种不同生境小型鱼类的种类组成、多样性和密度 [PDF]
, 2007 研究了2003年春季浅水草型湖泊牛山湖小型鱼类空间分布(种类组成、多样性和密度等)与生境异质性之间的关系.根据水生植被状况、离岸距离和水深,选择了两种差异较大且有代表性的生境类型,即近岸沉水植物茂密的生境A和远岸沉水植物稀疏的生境B.使用围网(180m2)在这两种生境中进行小型鱼类的采样,采用多次标志回捕法和Zippin去除法估算了围网内小型鱼类的密度.结果表明,两种不同生境中小型鱼类的种类组成、多样性度量值和密度估算值均存在一定程度的差异:1)生境A中的渔获物由5科14种小型鱼类组成 ...
叶少文, 曹文宣, 李钟杰
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
, 2001 对地处农牧交错区典型地段的内蒙古多伦县蔡木山自然保护区植物属、种的区系特征进行了统计并与相临地区进行的对比分析 ,结果表明 :植物种类的多样性较高 ,本保护区范围内现共登记有维管植物 77科 2 5 6属 5 0 2种 .植物属的分布型特征表现出本地区植物区系的温带性质 ,在本保护区 2 5 6属植物中 ,北温带分布属为 82个 ,占总属数的 32 % ,包括北温带与南温带间断分布 ,共计 1 1 1属 ,占总属数的 4 4% .区系地理成分较临近地区复杂且具有过渡性 ...
刘丹, 宝音陶格涛
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Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT In an era of proliferating but divergent data protection regimes, the European Union's rights‐based approach and China's sovereignty‐centric model have become two dominant poles of global data governance. This article examines how multinational enterprises navigate compliance under these dual systems and how that compliance is shaped through ...
Yiping Cao
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2007 新昌盆地地处中国东南沿海火山-侵入杂岩带的东北端，区内广泛出露晚中生代火山岩与使入岩类，岩石类型丰富，是研究岩石遥感光谱的理想地区.作者对该地区的岩石样品进行了可见-近红外光谱和热红外光谱分析测试，研究了火成岩矿物组成、蚀变特征、共生状态等与遥感光谱的关系，并对其形成机理进行了探讨.
ZHANGDeng-rong(张登荣) +3 more
doaj +1 more source
, 2002 对福建省牛姆林自然保护区常绿针阔叶混交林的区系组成、地理成分、垂直结构、物种多样性等特征研究结果表明,该混交林群落维管植物种类组成丰富,600m~2样地内有38科62属119种,其中以常绿高位芽植物占绝对优势;种子植物地理成分中热带性质属37属占64.91％,温带成分19属占33.33％;群落分层现象明显,乔木层可分4个亚层,乔、灌木及藤本植物种类和数量均丰富,草本植物较少;比较群落各部分多样性水平为灌木层>乔木层>草本层 ...
严重玲 +3 more
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When Public Health Becomes the Weapon: Current and Prospective Consequences of the Genocide in Gaza
World Medical &Health Policy, Volume 18, Issue 2, June 2026.ABSTRACT Catastrophic humanitarian conditions during the 2023–2025 genocide in Gaza have caused a public health crisis of exceptional magnitude. This article summarizes key short‐ and long‐term health consequences for Gaza's civilian population and outlines priorities for recovery.
Therese Alexandra Evald +19 more
wiley +1 more source
The Synecological Studies on Castanopsis Forest in Fujian Province [PDF]
, 2017 锥属植物往往是亚热带常绿阔叶林的建群种，锥林研究可以为植被分类研究提供许多重要数据。本文在对福建省自然保护区内保护良好的锥林样地调查的基础上，结合收集的全省已有的多个锥林调查数据资料，对其进行群落结构、区系特征、生物多样性等群落生态学特征以及优势种种间关系研究。分析整个福建锥林群系组整体特征以及各锥林群系特征，并探讨不同锥属种群在群落中所处的作用与地位。主要结论如下： 1、锥属树种为建群种的常绿阔叶林（锥林）的乔木层常由多个种群共建，灌木层上下两层组成略有不同。由于乔灌层的郁闭度较高，草本层相对空旷 ...
江昕怡
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