Results 21 to 30 of about 1,337 (121)
Our study addresses the significant knowledge gap regarding the wintering population and habitat utilization of the Yellow‐breasted Bunting (Emberiza aureola) in Nepal, providing crucial insights that can aid in the conservation of this critically endangered species in wintering grounds.
Hem Bahadur Katuwal +6 more
wiley +1 more source
Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
wiley +1 more source
Abstract Although agriculture and plantation forestry have decreased natural open habitats and old‐growth forests, conservation in managed lands is considered essential for achieving “nature‐positive” goals that reverse biodiversity trends from negative to positive. From subboreal to temperate regions, mature conifer plantations with broadleaved trees (
Kazuhiro Kawamura +2 more
wiley +1 more source
Guanotrophy: Waterbirds Pay for Using Resources at Their Wintering Habitats 鸟粪营养学 :水鸟在越冬栖息地使用资源后留下回报
Significant waterbird colonisation was recorded in the wintering period (October through March in 2018–2019 and 2019–2020) in wetlands on Central Asian and East Australasian Flyways. Different limnochemical conditions influenced nitrate and phosphate concentrations.
Arkajyoti Mukherjee +3 more
wiley +1 more source
Molecular markers are widely used in conservation genetics of wildlife. A total of 15 novel microsatellite loci with high polymorphism of Blue‐crowned laughingthrush were developed in this study. The genetic diversity level of wild individuals was higher than two captive populations including Ocean Park Hong Kong and Nanchang Zoo. The genetic diversity
Xinghe Gao +8 more
wiley +1 more source
盐城生物圈保护区越冬丹顶鹤数量超过1000只19be年12月至1997年回月,盐城生物圈保护区对越冬丹顶鹤(GrUsjaPonens训的数量进行了调查。结果表明,保护区内越冬丹顶鹤的总数为1020只,比19954I5xattw长200余只,是保护区建...
马志军
doaj
云南昭通地区是黑颈鹤越冬的王要栖息地之一。1995/96年冬季共发现有1000只左右个体在10个地点越冬栖息.越冬集群有家族、同种和异种三种类型。成功比为8:1。目前辽些分布点的沼泽湿地都已受到不同程度的人为破坏。云南省政府正筹划在该地区建立自然保护区。
孙德辉
doaj
为探究采煤沉陷区生态修复而形成的人工湿地中越冬鸳鸯(Aix galericulata)生境利用模式及其行为变化规律,于2023年10月—2024年4月,在淮南鸳鸯湖城郊湿地公园采用定点观察法和瞬时扫描法对越冬鸳鸯在不同天气、越冬阶段以及雌雄个体间的生境利用和日行为模式进行研究,观察记录觅食、休息、游泳、移动、社群、维持、警戒和飞行等行为,共记录1 628条有效数据,累积时长407 h。结果显示:(1)越冬鸳鸯种群数量在不同越冬阶段存在显著性差异(χ² = 27.031,P < 0.001 ...
程磊 +4 more
doaj +2 more sources
丹顶鹤(Grus japonensis)在响水县沿海滩涂的越冬场所是一块盐田和扬水滩。笔者在丹顶鹤的越冬季节对这块越冬地进行了长约三个月的观察。本文是对丹顶鹤在响水滩涂的越冬场所分布和生存条件的简要介绍。滩涂现状及越冬场所分布响水县位于江苏省的灌河入海处。沿海滩涂面积约占全县面积的四分之一。滩涂上有三道海堤和八条港河贯穿,并有十三个面积不等的扬水滩(相当于浅水库),其余都是盐田。(见附图)。整个滩涂以老海堤为界 ...
陶定维
doaj
鄱阳湖位于长江中下游、江西省北部,是我国最大的淡水湖.每年冬季都有成千上万只水禽来此越冬.到鄱阳湖越冬的白鹤数量占全世界总数的98%以上.这里也是世界上最大的鸿雁越冬群所在地.因此,鄱阳湖是亚洲物种保护的最重要的湿地之一,已列为国际重要湿地.
魏海昌, 王小龙
doaj

