Results 21 to 30 of about 30,612 (170)
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 +8 more
wiley +1 more source
Synthetic studies of cytotoxic polyketides and an antifeeding terpene [PDF]
, 2012 Thesis (Ph. D. in Sciences)--University of Tsukuba, (A), no.
佐藤 洋輔
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Conservation Biology, EarlyView.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
保水剂和微生物菌肥配施对旱作燕麦土壤微生物生物量碳、氮含量及酶活性的影响
Shuitu Baochi Xuebao, 2020 为探讨保水剂和微生物菌肥配施后旱作燕麦土壤微生物生物量碳、氮含量及酶活性的影响，在内蒙古黄土高原旱作农田设置不施用保水剂和微生物菌肥（CK）、保水剂和微生物菌肥配施（A）、单施微生物菌肥（B）和单施保水剂（C）4个处理，分析燕麦全生育期内0—10，10—20，20—40 cm土壤微生物生物量碳、氮含量及酶活性时空动态变化和产量变化。结果表明：（1）全生育期，土壤微生物量碳含量呈"双峰"曲线变化，峰值均出现在孕穗期和灌浆期；氮含量呈先降低后升高再降低趋势，苗期含量最高；过氧化氢酶、蔗糖酶、脲酶活性均呈 ...
田露 +6 more
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野生动物学报, 2021 为了解动物园动物笼舍环境微生物活性及其影响因素，采集了5种灵长动物（Primates）、3种爬行动物（Reptilia）笼舍的3种不同类型的环境样本共15个，采用BiologECO板进行微生物分析。结果表明：15个样本的微生物活性存在极显著差异 ...
王兴金萨家祺李冠惠黎绘宏成世清
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がん細胞の微小管に作用する低分子化合物の探索と、その生物活性の評価 [論文要旨及び審査の要旨] [PDF]
, 2015 関西大
Kawaratani Yasuyuki, 瓦谷 泰之
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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 +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2011 为探讨科尔沁沙地小叶锦鸡儿固沙群落土壤微生物生物量和酶活性的季节动态规律,选取6,11,24年生人工群落和天然群落为对象,研究了不同土层深度微生物生物量(C、N、P)和脲酶、蛋白酶、蔗糖酶、磷酸单酯酶、脱氢酶和多酚氧化酶的活性随季节的变化特征。土壤按5层取样:0-10cm,10-20cm,20-30cm,30-40cm,40-50cm。结果表明,6～24年生小叶锦鸡人工固沙群落及天然群落土壤微生物生物量表现出明显的季节性变化,微生物生物量C和N为夏季>秋季>春季;微生物生物量P为夏季>秋季 ...
曹成有 +3 more
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Selective Isolation of Rare Actinomycetes from Rhizosphere Soil and Identification of Two Novel Strains [PDF]
, 2015 放线菌的次级代谢产物是重要的药物资源，目前已发现的数万种天然抗生素中约70%是由放线菌所产生的。近年来，由于从链霉菌中不断分离得到重复的活性化合物，继而人们逐渐将目光转向稀有放线菌。稀有放线菌种类多样，并且具有某些不同于链霉菌的特殊代谢途径，因而更有可能产生结构新颖、生物活性独特的化合物，具有极大开发潜力。 本文以采自厦门翔安香山、南京中山植物园和玄武湖公园的植物根际土壤作为分离源，采用聚乳酸-明胶（PLA-G）培养基和海藻糖-脯氨酸（YIM212）培养基进行稀有放线菌的选择性分离 ...
黎丹
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Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, EarlyView.Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman +6 more
wiley +1 more source