Results 41 to 50 of about 34,300 (180)

Evaluating the empirical basis for threat attribution in the IUCN Red List

Conservation Biology, EarlyView.
Abstract Understanding the impacts of different threats on species is key to successful conservation interventions and policies. The International Union for Conservation of Nature (IUCN) assesses threats to species, and the organization's Red List of Threatened Species is a key conservation tool.
Ena Humphries, Isaac M. Smith, Mark Ziebell, Charlotte M. Probst, Neil Carter, Brian C. Weeks   +5 more
wiley   +1 more source

IL-23R基因多态性与五邑地区汉族人群强直性脊柱炎的相关性分析

Zhongguo shiyan zhenduanxue, 2018
目的探讨中国五邑地区汉族人群中白细胞介素(interleukin,IL)-23R基因多态位点与强直性脊柱炎(ankylosing spondylitis,AS)发病的相关性。方法选取该地区汉族人群AS患者50例和同期健康体检者70名,采用Sequenom MassArray基因分型方法检测IL-23R基因多态位点,计算等位基因及基因型频率分布,并进行统计学分析。结果 rs10489629位点基因型频率和等位基因频率在两组间分布存在显著差异(χ2=11.392,P=0.003;χ2=13.435,P=0 ...
李秀娟, 孙川, 陈卫光, 黄胜起, 许蓓妮, 陈建勇   +5 more
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Functional homogenization of terrestrial mammals outside protected areas in the Hengduan Mountains, China

Conservation Biology, EarlyView.
Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li, Wenqiang Hu, Kenneth Otieno Onditi, Quan Li, Zhechang Hu, Ru Bai, Yang Liu, Hongjiao Wang, Xuelong Jiang   +8 more
wiley   +1 more source

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

Conservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás, Francisco Botello, Claudia E. Moreno, Griselda Escalona‐Segura, Víctor Sánchez‐Cordero   +4 more
wiley   +1 more source

PGC-1α基因Gly482Ser多态性与2型糖尿病前期的相关性研究

Zhongguo shiyan zhenduanxue, 2012
目的了解云南省昆明地区PGC-1α基因Gly482Ser多态性与2型糖尿病前期的相关性。方法采集361例糖尿病前期人群（IGR）、430例2型糖尿病患者（T2DM）和446例OGTT正常的健康志愿者（NGT）的血样,提取基因组DNA。应用高分辨率熔解曲线分析方法检测PGC-1α基因Gly482Ser基因型,观察三组人群中基因型和等位基因的分布情况,同时分析糖尿病前期不同基因型人群的临床变量的差异性。结果20（1）PGC-1α基因Gly482Ser20AA基因型及G等位基因在T2DM组中的频率分别为0 ...
邓德耀, 袁文丽, 冯倩, 刘春林, 赵东岩, 李显丽, 高宗鹰, 徐红云, 方芳, 李奕平   +9 more
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Calibration of the species threat abatement and restoration metric's threat abatement component in a Costa Rican landscape

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, Thomas M. Brooks, Randall R. Jimenez, Nicholas B. W. Macfarlance, Tony Nello, Antonin Vergez, Leon Bennun, Florence Curet, Annie Dakmejian, Edward Ellis, Melibea Gallo, Philip J. K. McGowan, Francesca A. Ridley, Alex Ross, Claudine Sierra, Thomas Starnes, Joseph A. Turner, Frank Hawkins   +17 more
wiley   +1 more source

颅内动脉瘤信号传导相关基因的筛选

Zhongshan Daxue xuebao. Yixue kexue ban, 2007
【目的】基因芯片技术建立颅内动脉瘤患者血液单核细胞基因表达谱,筛选与信号传导相关的基因表达情况。【方法】50例颅内动脉瘤患者外周血,10例正常成人作为对照组,分离血液单核细胞,提取总RNA,与含22215个人类基因的Affymetrix寡核苷酸基因芯片杂交、洗脱、染色和扫描,分析检测的数据。荧光定量RT-PCR验证芯片结果。【结果】检测的22215个基因中,颅内动脉瘤共差异表达的基因有325个,差异水平均达2倍以上的基因有35个,生物信息学分析发现信号传导相关基因有7个,其中上调基因5个,下调基因2个。【
石忠松, 李明昌, 孙毅明, 朱永华, 戴华浩, 潘伟生, 黄正松   +6 more
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Biodiversity‐driven spatial conservation planning to delineate temporally stable regions

Conservation Biology, EarlyView.
Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella, Viviana Cittadino, Ilaria Bernabò, Antonio Romano, Maurizio Biondi, Davide Serva   +5 more
wiley   +1 more source

Defining and identifying relevant stakeholders to advance effective conservation

Conservation Biology, EarlyView.
The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher, Felix Przesdzink, Christian Wilhelmy, Laura Herzog, Johannes Halbe, Florian Fiebelkorn   +5 more
wiley   +1 more source

转化生长因子β₁基因多态性与食管癌的关系

Zhongguo shiyan zhenduanxue, 2010
目的研究转化生长因子β1（TGF-β1）基因启动子区-800G/A和第1外显子+915G/C基因多态性各等位基因及基因型在食管癌患者中的分布频率,初步分析其基因型及血清水平与食管癌的相关性。方法采用序列特异性引物聚合酶链反应（PCR-SSP）和聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术,检测118例食管癌患者和130例正常对照组TGF-β1的基因多态性,包括TGF-β1基因启动子-800G/A、第1外显子+915G/C位点,同时采用酶联免疫吸附试验（ELISA）检测血清TGF-β1水平 ...
唐任光, 韦叶生, 韦彩成, 陈宏明, 黄艳青, 李燕飞   +5 more
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