Results 31 to 40 of about 24,580 (225)
Justice in coexistence: Pastoralism and large carnivores on the Qinghai‐Tibet Plateau
People and Nature, EarlyView.Abstract The conflict between livestock husbandry and large carnivore conservation presents significant challenges in grassland ecosystems worldwide. Achieving sustainable coexistence among herders, livestock and large carnivores requires reconciling diverse perspectives and interests through equitable, inclusive and fair processes that address both ...
Yufang Gao, Yue Yu
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的探讨吉林地区汉族人群脂联素基因（apM1）多态性与与冠心病的关系。方法运用单核苷酸多态性分析技术在251例无亲缘关系的吉林地区汉族人群（正常对照人群131例,冠心病120例）中检测apM1基因2号外显子及3号外显子的多态性。结果吉林地区汉族人群中SNP45（T/G）和SNP331（T/C）多态性的基因型频率和等位基因频率在冠心病组和正常对照组间的分布存在显著性差异 ...
王楠, 李淑梅
doaj
污水处理厂中浮游生物群落DNA指纹及其与水质指标的关系 [PDF]
, 2008 以武汉龙王嘴污水处理系统为研究对象,揭示了污水处理各阶段中浮游生物群落的DNA指纹拓扑结构,进而探索了其与浮游生物群落结构和环境理化因子的关系.首先建立了污水处理系统中浮游生物群落总DNA提取方法,然后用原核与真核特异性引物对流程(A2/O氧化沟工艺)中不同阶段的浮游生物群落总DNA进行PCR扩增,用变性梯度凝胶电泳(DGGE)检测,并对平行水样分别进行常规理化因子和浮游生物物种的检测与鉴定.结果显示,各采样点理化因子、物种组成与浮游生物DNA指纹的统计分析结果十分吻合,厌氧、缺氧和好氧阶段间差异较小,
余育和 +4 more
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Wildlife Letters, EarlyView.Asiatic black bears in Russia face conservation threats such as habitat destruction and fragmentation, which exacerbate food shortages caused by crop failures. This study explores an innovative approach to rehabilitating bears that abandon hibernation in mid‐winter due to extreme exhaustion by providing supplemental food near their den sites.
Sergey A. Kolchin +2 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 目的探讨血管紧张素原（AGT）基因M235T多态性与中国人群结直肠癌易感性的关系。方法采用聚合酶链反应-限制性片段长度多态性方法检测结直肠癌组151例患者和健康对照组202例AGT基因M235T多态性。结果结直肠癌组与对照组AGT20M235T基因型和等位基因分布差异无统计学意义（P>0.05）。根据临床病理特征进行分层分析,发现携带TT基因型个体患低分化结直肠癌的风险比携带MT/MM基因型高2.50倍（P=0.008,OR=2.50;95%CI,1.26-4.97 ...
侯波
doaj
The genetic differentiation and mating system of Avicennia marina populations in China [PDF]
, 2016 本研究利用SSR分子标记技术，以海南三亚河口、湛江特呈岛和泉州洛阳桥三个地区的白骨壤(Avicenniamarina)种群为研究对象，比较分析三个白骨壤种群的遗传多样性、种群之间的遗传分化和繁育系统模式(包括花粉流、异交率和种子流)。主要结果为： 1、10对核基因组SSR引物在742个个体检测到58个等位基因位点。每个引物扩增等位基因数在5-9个之间，平均5.8个。三个地区种群共出现了15个私有等位基因位点，在等位基因水平上已发现较大的分化与遗传距离。 2、湛江白骨壤种群遗传多样性水平最高 ...
侯蕊
core
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
Fbgβ455基因多态性与CRP协同作用对动脉粥样硬化的影响
Zhongguo shiyan zhenduanxue, 2010 目的研究血浆纤维蛋白原Fbgβ455基因多态性与此反应蛋白CRP的协同作用对动脉粥样硬化的影响。方法采用限制性长度多态性聚合酶链反应检测血浆Fbgβ455基因态性及免疫比浊法检测CRP。结果心肌梗塞组与冠心病组患者外周血基因组DNAFbgβ455多态性分布G/G,G/A,A/A具有显著性差异（P0.05）。结论血浆Fbgβ455等位基因型G/A,A/A可能是急性心肌梗塞发病的遗传性危险因素,Fbgβ455与CRP在动脉硬化的发生过程中无协同作用。
孙晓盈, 王海, 高申, 谢风
doaj
Mating system, brood parasitism and extra-pair behaviour in the Chinese egret (Egretta eulophotes) basing on the microsatellite technology [PDF]
, 2015 动物的婚配制度影响着个体的繁殖成功率，直接关系到群体的遗传多样性和种群动态的发展变化，是保护遗传学和生态学领域中非常重要的研究内容。已有学者野外观察到黄嘴白鹭（Egrettaeulophotes）存在婚外交配（EPC）行为，然而，有关黄嘴白鹭的婚配制度、EPC的产生机制以及其是否会导致婚外父权（EPP）现象还未清楚。此外，许多集群繁殖的鸟类都存在种内巢寄生（CBP）现象，而关于黄嘴白鹭巢寄生行为的研究也尚未开展。因此，本研究围绕黄嘴白鹭的婚配制度问题，主要开展以下几方面研究： （1）对3种非损伤性样品 ...
戴宇飞
core
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source