Results 21 to 30 of about 1,174,630 (197)
Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Structured machine learning modeling to support conservation of deep‐sea benthic biodiversity
Conservation Biology, EarlyView.Abstract Biodiversity monitoring programs need to deliver accurate, timely, and actionable predictions. To establish a predictive monitoring program for deep‐sea benthos of the Santos Basin, Brazil, we developed a two‐stage structured model that allowed comparison of biodiversity predictions obtained from environmental simulations (2M‐Sim).
Gustavo Fonseca +23 more
wiley +1 more source
, 2000 用ＲＡＰＤ技术对稀有Ｊｕ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多样性指数来看，近交１０代的遗传多样性极低。在２２６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０．２９１１－０．３２３５间，表明自群本保持了较丰富遗传多样性。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 ...
王剑伟, 王伟, 崔迎松
core +1 more source
Taxonomic and functional diversity of urban bees of the world
Conservation Biology, EarlyView.Abstract Bees play a pivotal role in terrestrial environments. Urbanization can affect these organisms and the ecosystem services they provide. However, knowledge of the global diversity of urban bees is limited. Thus, we summarized data on urban bee species identities and occurrences; compared distributions of all bees with those found in urban ...
João C. F. Cardoso +10 more
wiley +1 more source
Biodiversity conservation needs more research
Guangxi Zhiwu, 2023 联合国《生物多样性公约》第十五次缔约方大会（以下简称COP15）通过了《昆明-蒙特利尔全球生物多样性框架》（以下简称《昆蒙框架》），包括4个长期目标和23个行动目标（马克平，2023），为全球2030年前应对生物多样性丧失问题明确了目标和路径。近年来，中国实施了一系列生态文明建设的举措，包括国土空间规划、生态保护红线划定和管控、以国家公园为主体的自然保护地体系的建设等，率先实现了《昆蒙框架》中关于通过全域空间规划实现生物多样性主流化（行动目标1）、保护30%陆地面积（行动目标3）等重要目标，为国际社会 ...
Keping MA, Hai REN, Chunlin LONG
doaj +1 more source
Conservation Biology, EarlyView.Abstract Although significant biodiversity has been safeguarded by protected areas (PAs), biodiversity trends continue downward. Within the frameworks of the EU Biodiversity Strategy for 2030 and the new EU Restoration Regulation (2024), conserving critical biodiversity areas is essential.
George Kefalas +14 more
wiley +1 more source
Using customs data to understand overlooked trade in non‐CITES birds between Africa and Asia
Conservation Biology, EarlyView.Abstract The international trade in live birds poses risks to animals, people, and biodiversity. To effectively mitigate these risks, decision‐makers require information on the volume, dynamics, and direction of trade. Despite Africa once being the largest exporter of birds by region, very little data exist on recent trade in live birds not listed on ...
Alisa Davies +4 more
wiley +1 more source
, 2021 毛茛科是真双子叶植物的基部类群之一,包含多种药用植物,具有较高的保护价值,但关于毛茛科物种多样性和谱系多样性大尺度格局及其影响因子的研究还比较匮乏,特别是以较高分辨率分布数据为基础的物种多样性格局研究尚未见报道。本文旨在:(1)建立欧亚大陆东部毛茛科植物分布数据库,估算不同生活型物种多样性和谱系多样性格局,并探究格局的形成机制。(2)分析毛茛科物种多样性和谱系多样性的相关关系,确定多样性热点地区,为毛茛科保护规划提供依据。根据中国、哈萨克斯坦、吉尔吉斯斯坦、塔吉克斯坦、土库曼斯坦、乌兹别克斯坦 ...
李亦超 +11 more
core
野生动物学报, 2011 2009年5月9日～6月9日,采用样方法对安邦河湿地自然保护区退耕还湿区域鸟类群落多样性进行了研究。根据调查区域生境特点,将调查区划分为3个大样方,分别为恢复初期湿地（样方1）、恢复中后期湿地（样方2）以及农田（旱田,样方3）。本研究共观察到鸟类12目24科61种。该地区春季鸟类群落多样性指数为2.20,其中样方2的多样性指数最高,为1.73;样方1为0.63;样方3为0.18。多样性指数比较结果表明,进行生态恢复可以增加鸟类的群落多样性。鸟类群落多样性是衡量一个地区生态环境的一个重要指标 ...
刘志伟 +5 more
doaj
Zhejiang Daxue xuebao. Lixue ban, 2014 城市湿地水质受人类活动影响，其水系浮游细菌群落多样性也因水质状况不同而变化.以杭州西溪湿地国家公园为研究区，分析人类活动特征差异对河道水质及浮游细菌群落多样性的影响，测定溶解氧、氨氮、硝氮、总氮、总磷等主要理化指标，运用聚合酶链式反应与变性梯度凝胶电泳(PCR-DGGE)技术，分析各水样中浮游细菌群落多样性，通过主成分分析与典型对应分析等统计手段，比较各项理化指标与细菌群落结构的相关性.研究结果表明：湿地河道水质受人类活动影响显著，呈中度~重度富营养化；河道水域内细菌群落总体多样性较高 ...
NIYanyan(倪燕燕) +6 more
doaj +1 more source