Results 31 to 40 of about 99,580 (158)

贺兰山西坡阿拉善黄鼠消化道形态的季节变化

open access: yes野生动物学报, 2018
为探讨阿拉善黄鼠(Spermophilus alaschanicus)的消化道特征对贺兰山荒漠环境的适应,对野生环境中阿拉善黄鼠消化道各项指标进行了测定。实验分别测定了不同季节胃、小肠、大肠、盲肠的长度、鲜重及净鲜重。结果表明阿拉善黄鼠消化道的总鲜重和总长度有显著季节差异,秋季较高,夏季次之,春季最低; 胃和盲肠鲜重以及盲肠净鲜重有显著季节差异,以秋季最重,春夏较轻; 小肠和盲肠的长度有显著季节差异,两者秋季最长,小肠夏季居中,春季最短,而盲肠春季居中,夏季最短 ...
王志勇 刘 鹏 燕永彬 滕丽微 高 惠孙玉姣 王继飞 刘振生
doaj  

Seasonal Spatial Population Density Distribution Dynamics of Lynx and Ungulate Prey in Cold‐Temperate Coniferous Forests 寒温带针叶林猞猁和有蹄类猎物种群密度空间分布的季节性动态研究

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.
This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang   +11 more
wiley   +1 more source

Anthropogenic nitrogen addition interrupts seasonal connectivity and structures of plant–pollinator networks

open access: yesFunctional Ecology, Volume 40, Issue 6, Page 1878-1891, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ecological communities are stressed by rapid and complex anthropogenic changes, threatening the persistence of biotic interactions and ecosystem functioning. Plant–pollinator communities, for instance, undergo structural transformations as a result of land‐use change ...
Erliang Gao   +8 more
wiley   +1 more source

乐清湾湿地鸟类多样性特征及季节变动

open access: yes野生动物学报, 2017
在2015 ~2016年间,分四季调查了乐清湾湿地鸟类资源状况。共调查到鸟类195种,分属16目46科,其中春季11目34科114种9 998只,夏季14目37科98种5 449只,秋季15目42科112种6 569只,冬季11目35科119种7 552只,不同季节鸟类物种数和个体数量差异较大。从丰富度指数看,冬季最高(13.21),夏季最低(8.89)。从多样性指数看,春季最高(4.57),秋季最低(3.95)。从相似度指数看,春季和冬季之间最高(57.82%),春季与夏季之间最低(33.33 ...
孔 强 敖展雄 杨秋花 宫莉霞 鲁庆彬
doaj  

黄河干流头道拐水文站水沙运动特征及影响因素

open access: yesShuitu Baochi Xuebao, 2021
为明确黄河干流头道拐水文站水沙运动过程、变化趋势及运动状态特征,以2006—2018年黄河干流头道拐水文站水沙数据为基础,基于累积距平法、R/S极差分析法、河道来沙系数与不协调度等研究方法,对头道拐水文站水沙运动过程进行系统分析。结果表明:头道拐水文站年际间径流与输沙量和年内月均径流与输沙量变化趋势均呈现良好的一致性,但两者的季节性差异特征显著,且输沙量的显著性较径流更突出;冬季径流与输沙量变化趋势同步性相比其他季节较差 ...
赵水霞   +6 more
doaj  

Prioritizing bat roosts for conservation with a global multicriteria bat roost priority index based on community science

open access: yesConservation Biology, Volume 40, Issue 3, June 2026.
Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch   +6 more
wiley   +1 more source

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

Mistimed surveys lead to underestimated migratory bird impacts from wind farms

open access: yesJournal of Applied Ecology, Volume 63, Issue 4, April 2026.
Current guidance and approaches to surveying migratory birds at windfarm developments in Australia are insufficient. Evidence‐based alignment with seasonal presence is needed to improve biodiversity assessment standards, ensuring renewable energy expansion proceeds in a way that better safeguards migratory species and supports global biodiversity and ...
Xu Shi   +7 more
wiley   +1 more source

基于高通量测序技术对不同季节圈养褐马鸡肠道菌群多样性分析

open access: yes野生动物学报, 2022
为提高褐马鸡(Crossoptilon mantchuricum)疾病防控能力和饲养管理水平,利用高通量测序技术对其肠道菌群进行多样性分析,探知其肠道菌群在不同季节的变化规律,并预测潜在致病的高发时间段,结果表明:门水平上,圈养褐马鸡的肠道优势菌群为厚壁菌门(Firmicutes,52.11%)、拟杆菌门(Bacteroidetes,18.20%)、变形菌门(Proteobacteria,17.91%)和放线菌门(Actinobacteria,7.32%); 属水平上 ...
雷 英   +11 more
doaj  

A Novel Topical Emollient Plus for Canine Atopic Dermatitis: A Clinical Trial Assessing Efficacy and User Acceptance

open access: yesVeterinary Dermatology, Volume 37, Issue 2, Page 293-305, April 2026.
Background: Canine atopic dermatitis (cAD) is a common, chronic skin condition characterised by epidermal barrier dysfunction, immune dysregulation and cutaneous dysbiosis. While “emollient plus” formulations are widely used in human atopic dermatitis, their role in cAD remains underexplored. Hypothesis/Objectives: To evaluate the clinical efficacy and
Beatriz Fernandes   +8 more
wiley   +1 more source

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