Results 141 to 150 of about 1,500,665 (202)
, 2015 球状绿藻主要指绿藻门中多为单细胞,形状为球形、近球形,或由球形衍生出来的其他形状的藻类。球状绿藻分布广泛,遍布全球,生活于淡水、海水和亚气生等生境中,其相似的简单形态下隐藏着复杂的物种多样性。球状绿藻分类学上主要位于绿藻门的两纲四目及其一些独立支系的类群。球状绿藻分类学正由传统的基于形态特征向基于分子信息的复合分类方法转变。球状绿藻隐性的物种多样性涉及约40属,其中15属是依据新标本材料而建立的新属,12个属是依据新证据建立的新组合 ...
张琪 +4 more
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Multi‐gradient warming reshapes functional traits and adaptive responses of alpine meadow plants
Functional Ecology, Volume 40, Issue 9, Page 2889-2905, September 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant functional traits in alpine meadows are critical indicators of ecosystem responses to climate warming, yet dynamic changes in trait networks across warming gradients and their consequences for community functions remain poorly understood.
Zhiwei Yan +6 more
wiley +1 more source
, 2000 用RAPD技术对稀有鲫近交 10代及 3个野生群体的遗传多样性和群体间差异进行了研究。无论从多态位点的比例、个体间的共带率还是从多样性指数来看 ,近交 10代的遗传多样性极低。在 2 2 6个RAPD位点中 ,野生群体有近半数的位点是多态的 ,Shannon多样性指数在 0 .2 911～ 0 .32 35间 ,表明自然群体保持了较丰富的遗传多样性。近交 10代与野生群体间遗传差异十分明显。野生群体间在 11～ 19个位点上的表型频率存在显著差异 ,总遗传多样性的 91.33%来自群体内 ,8.6 ...
王剑伟,王伟,崔迎松
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Ten rules for using evidence to guide ecosystem restoration
Journal of Applied Ecology, Volume 63, Issue 9, September 2026.These 10 rules provide a guidance framework to put into action the best available evidence, ensuring that restoration benefits people and nature. We highlight the importance of knowledge brokering systems in this process, effectively informed and empowered to fulfil their emerging role across existing institutions and new ones dedicated to Science ...
Rafael B. Chaves +12 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 1998 调查上海部分地区正常人血清ａｐｏＥ浓度，了解它与年龄和性别的关系；建立ａｐｏＥ基因型的检测方法。方法采用夹心ＥＬＩＳＡ法进行ａｐｏＥ定量，应用多聚酶链反应（ＰｏｌｙｍｅｎａｓｅｃｈａｉｎｒｅａｃｔｉｏｎＰＣＲ）和限制性片段长度多态性分析（ＲｅｓｔｒｉａｔｉｏｎｆｒａｇｍｅｕｔｌｅｎｇｔｈＰａｌｙｍｏｒｐｈｉｓｍ，ＲＦＬＰ）建立ａｐｏＥ多态性分析法。结果２００份正常人血清ａｐｏＥ定量确立参考值范围为８０±５３ｍｇ／Ｌ，女性略高于男性，不同年龄无显著差异；建立了快速抽提ＤＮＡ方法和ＰＣＲ扩增及ＲＦＬＰ法 ...
doaj
, 2016 中国森林生物多样性保护和恢复措施的制订依赖于生物多样性的监测信息。设计一个有效的生物多样性监测网络是一项复杂的系统工程。监测网络的设计框架可分为监测目标、监测对象、监测指标、取样策略、数据采集和处理、网络维护以及组织工作等几个部分。目前,国际上已有5个得到广泛认可的生物多样性监测网络,包括地球观测组织–生物多样性监测网络、全球森林监测网络、热带生态评估与监测网络、泛欧洲森林监测网络和亚马逊森林清查网络,它们的监测目标、监测内容和方法、样地布局及部分监测成果各有特色。我们试图在全国生物多样性监测 ...
郭柯 +5 more
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Out of Sight, Out of Mind? The Impact of Issue Proximity on Policy Choice at the Individual Level
Review of Policy Research, Volume 43, Issue 5, September 2026.ABSTRACT Scholars have extensively studied the link between issue definition and policy choice. However, empirical evidence on the role of issue proximity on policy support at the individual level remains scarce. The study draws on policy and management literatures to examine whether framing an issue as more or less spatially proximate to an individual
Vaiva Kalesnikaite, Ana Maria Dimand
wiley +1 more source
[Association analysis between dystrophin gene polymorphism and non-syndromic cleft lip with or without cleft palate]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiBa W +6 more
europepmc +1 more source
Association of insulin signaling pathway-related gene polymorphisms and gene-gene interactions with MAFLD in obese children. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Xiao X +5 more
europepmc +1 more source