Results 21 to 30 of about 6,238 (171)
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
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Zhejiang Daxue xuebao. Lixue ban, 2001 以浙江天台山特有种华顶杜鹃为研究对象，分析了它所在群落的结构Q物种组成及数量特征.在该群落中，华顶杜鹃不占优势，优势种群为阔叶箬竹、黄山松、山□和金钱松等，它们的年龄结构都属于稳定型或增长型.群落垂直结构完整，可分为乔木层、灌木层、草本层，亦有一定数量的层间植物.乔木层的物种多样性偏低，灌木层和草本层的物种多样性较高.各样地间的植物种类相似性较高.华顶杜鹃处于濒危状态，必须采取措施加以保护.
ZENGHan-yuan(曾汉元) +2 more
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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
野生动物学报, 2015 近年来,城市化对鸟类的影响受到生态学家的广泛关注。于2014年3～5月对哈尔滨市区7块城市绿地中鸟类的分布和数量进行了调查,同时选取4个城市化指标以确定影响哈尔滨市区鸟类群落的主要城市化因子,并进一步分析哈尔滨城市化与鸟类群落的关系。调查共记录到鸟类121种隶属于14目38科。在7个样地中,鸟类群落多样性指数显示为:H群力湿地公园>H植物园>H太阳岛>H东北林业大学林场>H兆麟公园>H四季上东小区>H儿童公园; 均匀性指数E群力湿地公园>E植物园>E东北林业大学林场>E太阳岛>E四季上东小区>E兆麟公园>
王 舒 童玉平 王志洁 姚依晨 刘力榕 李 枫
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Zhejiang Daxue xuebao. Lixue ban, 2010 采用PCR-DGGE和RAPD分子标记技术分析了不同浓度硝基苯废水驯化的细菌群落结构变化,探讨硝基苯废水对细菌群落结构及多样性的影响.结果表明：RAPD分子标记显示不同浓度废水驯化的细菌群落的Nei's指数(h)平均为0.252 3, Shannon's信息指数(I)平均为0.373 0；而采用DGGE技术得到不同浓度废水驯化的细菌群落的h平均为0.252 3, I平均为0.395 8.
YUBin-bin(余彬彬) +2 more
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Effects of landscape fragmentation on floodplain fishes as revealed by species–habitat networks
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract How species interact with habitat patches is influenced primarily by habitat configuration (e.g., connectivity) and species’ functional traits. As levels of fragmentation increase, identifying the intricate connections between these components is crucial for biodiversity conservation.
Chen Zhang +8 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 松叶蕨（Psilotum mudum）是裸蕨类松叶蕨属孑遗植物，由于分布范围的急剧缩小，现已处于极度濒危状态.对分布于浙江缙云的松叶蕨的自然环境进行了野外调查，测定群落的总体方差比率及X2统计量等种间联结性指标，并测定其土壤含水量、有机质含量、pH值，以及植株和土壤中的K、Ca、Mg、Fe、Zn、Cu、Mn、Na、Al、Pb、Cd等元素含量.结果表明：松叶蕨群落种类丰富，植被类型的次生特征明显.松叶蕨与极少数种群的种间联结性显著，与大部分种群种间联结性不显著，松叶蕨在群落中具有很大的独立性或随机性 ...
ZHUSheng-chao(朱圣潮) +1 more
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Contribution of microcosm experiments to conservation science
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Microcosms, or miniature experimental systems, have been used to develop models and theories in ecology. However, their contribution to conservation science is unclear. We explored the application, design, and impact of microcosms in conservation science from 469 systematically identified articles published from 1986 to 2023.
Eleanor R. Stern +3 more
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Haiyang yu huzhao为了解岱衢洋海域游泳动物资源及其群落稳定性特征，根据2023年10月(秋)和2024年4月(春)对岱衢洋海域两个航次的渔业资源调查资料，运用ABC曲线法和聚类分析对游泳动物群落结构进行分析，并构建了鱼类和甲壳类生物量粒径谱，比较分析了春、秋季节两个群落生物量粒径谱的特征参数差异性。结果显示，鱼类种类数减少，甲壳类种类增加；春季鱼类、甲壳类Sheldon型生物量粒径谱均呈现不规则锯齿状，秋季鱼类、甲壳类生物量粒径谱呈现“M”形；春季标准化生物量粒径谱鱼类曲率大于秋季，曲线较平缓，受干扰程度较小；春 ...
徐 菲 +8 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 研究了分布于浙江建德的亚热带常绿阔叶林生态系统的Mg的积累和循环.结果表明：群落各代表种类的Mg浓度为0.028%~0.265%，变幅较大.新的器官和个体中积累了较多的Mg.优势种青冈体内Mg浓度的季节变化不明显.鲜叶和鲜枝中的Mg浓度比枯叶和枯枝高.降水通过林冠时有部分Mg被淋溶出来.Mg在群落中现存量为89.96 kg/hm2，死地被层中积累量为15.62 kg/hm2，土壤（A0-B层）中储存量为39 840 kg/hm2.群落中Mg的存留量为11.64 kg/(hm2 • a)；归还量为8.52
LIMing-hong(李铭红) +3 more
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