Results 11 to 20 of about 1,237 (170)

The structure and phylogenesis of olfactory receptor gene OR14J1 in ardeid birds [PDF]

open access: yes, 2016
动物嗅觉受体(OlfactoryReceptor,OR)分布于嗅觉上皮而直接影响着嗅觉功能。哺乳类OR基因家族中位点相连于主要组织相容性复合体(MajorHistocompatibilityComplex,MHC)的基因比例最大,且邻近MHC的最常见OR14J1基因具有与MHC相关联的作用,动物通过嗅觉选择配偶能够有利于提高其免疫力和适应性。鸟类嗅觉以往被认为较弱而没有得到重视,近年来有关鸟类嗅觉基因的研究正在开始起步。 本论文在设计鹭科鸟类OR14J1通用引物的基础上,扩增鹭科鸟类OR14J1片段 ...
刘梦绮
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Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás   +4 more
wiley   +1 more source

The Garden Paintings Engraved on Bronze Vessels of the Eastern Zhou Dynasty [PDF]

open access: yes, 2000
【中文文摘】从东周青铜器上的图像分析园林构成 ,并与文献史料进行比较研究 ,探讨这个时期的园林特征 ,从图像中的苑囿构成来看 ,已有功能分区 ,并有台榭、坛台、帐幕、池沼、动植物等构成要素及宴乐、祭祀、狩猎等活动 【英文文摘】Based on many garden pictures engraved on bronze vessels of the Eastern Zhou dynasty, this paper analyses the system of these gardens ...
曹春平
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Effects of landscape context on avian specialist response to increased surface temperature in protected areas

open access: yesConservation 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

A study on the breeding-site fidelity of Chinese egret——based on stable carbon and nitrogen isotopic analyses [PDF]

open access: yes, 2015
稳定同位素技术因具有示踪、整合和指示等多项功能,以及检测快速、结果准确等特点,近二十几年来被作为一种比较成熟的技术应用于生态学及环境科学的各个领域。例如,研究生物与环境的相关关系,检测环境污染,研究动物的食性、食物构成、营养级层次、食物链及食物网结构,动物迁徙活动,农产品溯源,食品安全等方面。同时,稳定同位素技术在动物生态学研究,尤其是鸟类生态学研究中发挥了巨大的作用,解决了很多传统方法无法解决的难题。例如鸟类食性选择、迁徙路线及中途停留地选择、繁殖地忠实度等问题上。至此 ...
于小桐
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Functional Stability Despite Taxonomic Changes in Mixed‐Species Foraging Flock Participants Along an Elevational Gradient in Knuckles Montane Reserve, Sri Lanka 斯里兰卡纳克斯山地保护区 (Knuckles Montane Reserve) 海拔梯度上混合物种觅食群参与者的功能稳定性与分类变化

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 59-73, March 2026.
This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara   +3 more
wiley   +1 more source

云南异龙湖冬季水鸟群落多样性及年际变化

open access: yes野生动物学报, 2021
2016年11月—2019年3月,采用“点样带法”对云南异龙湖冬季水鸟群落进行研究,共记录冬季水鸟8目14科59种,其中,2016—2017年调查到6目10科41种;2017—2018年调查到8目14科56种;2018—2019年调查到8目14科59种。从水鸟群落组成的年度动态图上看,物种数呈增加趋势,最多出现在2018—2019年,记录59种;从水鸟物种数量的年度动态图上看,物种数呈先增加后减少趋势,最多出现在2017—2018年。冬季水鸟物种数及个体数呈逐年增加,2016 ...
马国强 1   +1 more
doaj  

Are Galliformes of the High Himalayas Well Protected? Identifying Conservation Priority Areas Using an Assemblage‐Level Approach 高喜马拉雅地区的鸡形目鸟类是否得到了有效保护?利用群落水平方法确定优先保护区域

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.
This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma   +5 more
wiley   +1 more source

陕西省鸟类物种组成及分布状况40年之变化

open access: yes野生动物学报, 2023
对截至2022年4月底陕西省11个调查地理单元中的鸟类组成及其变化进行统计。结果表明:陕西省共有鸟类572种,隶属于22目81科,其中国家一级重点保护鸟类29种,国家二级重点保护鸟类98种。按居留型划分,留鸟200种,夏候鸟191种,冬候鸟55种,旅鸟104种,迷鸟22种。物种组成随着调查地理单元的不同而发生变化,渭河谷地及其以南区域的物种数较多,其次为陕北黄土高原及其以北区域,而陕北黄土切割塬和陇山山地最少。秦巴山地留鸟的比例较高,鄂尔多斯高原和陕北高原西北部迁徙鸟的比例相对较高 ...
高学斌, 王伟峰, 于晓平
doaj  

不受歡迎的生物多樣性:香港的外來植物物種 [PDF]

open access: yes, 2002
The flora of Hong Kong has been well-surveyed since the mid nineteenth century and has had a long history of alien plant invasions. To the present day, more than 2130 wild plant species have been recorded, including 238 species that are probably ...
Corlett, RT, Ng, SC
core  

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