Results 11 to 20 of about 17,401 (196)
Wildlife Letters, EarlyView.In the winter of 2021/2022, a winter track survey revealed 43–46 tigers (without cubs) in 5.4 thousand km2 of suitable habitats in the Southwest Primorsky Province of Russia. In the same period, a network of camera traps registered 54 adult/subadult tigers here.
Yury Darman, Dina Matiukhina
wiley +1 more source
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
Wildlife Letters, EarlyView.Using a 3‐year, broad‐scale camera‐trap network in western Kansas, we tested whether coyotes and American badgers exhibit spatiotemporal patterns consistent with coordinated hunting. Despite high diel activity overlap, detection‐conditioned co‐detections occurred far less frequently than expected under independence, and short‐term temporal sequencing ...
Ty J. Werdel +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Wildlife Letters, EarlyView.Although once abundant across its range, gray foxes (Urocyon cinereoargenteus) are purportedly declining. While range maps indicate that gray fox potentially occur throughout the central United States, contemporary distribution maps are needed. We developed a Habitat Suitability Model for six states, leveraging gray fox presence data in an ensemble ...
Daniel J. Benson +4 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2003 通过群落与种群的调查,对浙江北部几个地区的青冈常绿阔叶林中青冈种群的数量特征,从分株和分株+萌生枝两个层次上进行了研究.结果表明:青冈种群的大小结构在分株层次上,有两种类型:纺锤形结构和不典型的金字塔形结构(倒"J"型),在分株+萌生枝层次上,都为金字塔形结构;青冈种群主要是集群分布格局;动态分布格局是从集群分布到随机分布.
HUXiao-bing(胡小兵) +1 more
doaj +1 more source
Wildlife Letters, EarlyView.Human‐caused leopard deaths in Sri Lanka averaged 9.65 ± 4.5 records year−1 over 17 years (2008–2024; n = 164), with records highly clustered in the central highland mosaic ecosystem. Mortality was dominated by adult males and driven primarily by snaring in plantation landscapes, and indicating an increase approximately 0.7–0.8 deaths per year.
Sanjaya Weerakkody +11 more
wiley +1 more source
野生动物学报, 2020 基因流是指基因从某一群体迁移至另外一个群体的所有基因迁移方式的统称。为探索长白山北部西伯利亚狍(Capreolus pygargus)局域种群间的基因流,本研究通过收集长白山北部5个西伯利亚狍局域种群279份粪便样本,使用9个微卫星位点,鉴定出215个个体,用以评估种群间遗传多样性,同时运用贝叶斯方法探讨了群体间基因流动情况。研究结果表明,5个西伯利亚狍种群遗传多样性水平(He=0.714—0.732)高于亚洲大部分西伯利亚狍种群(He=0.522—0.628 ...
田玉苗 # 盛清宇 # 袁立成 姜广顺
doaj
野生动物学报, 2023 奠基者效应会打破种群遗传结构，使原有种群动态特征失去平衡，加剧遗传多样性的丧失，严重影响物种重引入的遗传多样性和遗传结构。中国麋鹿（Elaphurus davidianus）奠基种群为北京南海子麋鹿苑和江苏大丰麋鹿国家级自然保护区两大种群。为分析中国麋鹿奠基者效应，探究资源遗传多样性及种群结构，揭示中国麋鹿适应环境的遗传机制，以中国两大麋鹿奠基种群为研究对象，基于简化基因组测序，研究北京和江苏2个地区麋鹿的遗传多样性、种群遗传结构及亲缘关系。结果表明：2个种群（18只）共筛选出高质量多态性SNP位点1 ...
张树苗 +9 more
doaj
Study on dispersal patterns of two introduction populations of Sonneratia apetala [PDF]
, 2016 摘要 本研究通过对雷州附城和泉州泉港两个无瓣海桑引种种群进行野外调查、种群遗传结构分析及交配系统(亲本分析、花粉流及种子流)、种子萌发特性等方面的研究，探讨两个种群当前扩散格局的形成机制。 野外调查结果显示，泉州样地未发现无瓣海桑幼苗及幼树的散布，说明样地种群难以自然更新；雷州样地无瓣海桑引种林出现沿小河河道向上游大规模扩散的现象，其中河道上游扩散样方（20m*100m）散布着18株无瓣海桑幼苗、34株幼树、23株小树及2株大树；中游扩散样方（20m*100m）内分布着16株幼苗、20株幼树 ...
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