Results 21 to 30 of about 934 (165)

Nutritional and Physiological Markers Are Mediated by Seasonality and Forest Access in Captive Coquerel's Sifakas 圈养科氏冕狐猴 (Coquerel's Sifakas) 的营养和生理指标受季节性和森林通道的影响

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 652-664, December 2025.
We profiled nutritional and physiological markers in captive sifakas, endangered primates from Madagascar, managed in expansive, non‐native forest enclosures. Variation in many markers reflects freely foraged diets and the energy required to maintain homeostasis under more naturalistic conditions.
Lydia K. Greene   +5 more
wiley   +1 more source

Fluxes, Temporal and Spatial Variation and Influence Factors of Dissolved Nutrients in the Jiulong River Watershed [PDF]

open access: yes, 2016
营养盐是水生生物生长不可或缺的化学成分。河流是连接陆地与海洋两大生态系统的重要纽带,也是营养盐输送的一个关键渠道。九龙江作为福建省第二大河流连接了福建省东南部发达地区与台湾海峡,流域内环境压力较大,但对于人类活动对九龙江流域营养盐的生物地球化学行为及其排放尚不明了。 本研究于2013年3月至2014年4月对九龙江北溪、西溪和南溪河流端进行了高频取样,并在枯水期(2013年1月19-21日)及丰水期(2013年10月25-26日)分别实施了北溪及西溪全流域内的沿程调查取样 ...
陈国祥
core  

Facilitating Large‐Scale Bird Biodiversity Data Collection in Citizen Science: ‘Relaxed’ Point Counts for Anytime, Anywhere Monitoring

open access: yesEcology and Evolution, Volume 15, Issue 10, October 2025.
This paper proposes a ‘relaxed’ point‐count survey method to enhance accessibility and expand geographic coverage by easing these constraints. Surveys can be conducted in diverse locations, including urban areas and travel routes, within flexible timeframes (e.g., 6 h after sunrise or during the evening) and with adaptable spacing between survey points,
Masumi Hisano
wiley   +1 more source

Microeukaryotic community structure and diversity in Xiamen offshore waters and Shenhu Bay, Fujian [PDF]

open access: yes, 2015
微型真核浮游生物是海洋生态系统的重要组成成分,同时在海洋经典食物链和微食物网中发挥重要作用。该类群个体较小,对环境变化较为敏感,作为生产者、消费者和分解者的微型真核浮游生物在海洋生态系统的生物地球化学过程和生态健康评价等方面有着重要意义。本研究选择厦门岛近海海域和福建省泉州市深沪湾为例,对目标海区进行微型真核浮游生物样品的釆集,运用变性梯度凝胶电泳(DGGE)、克隆测序和高通量测序技术方法对微型真核浮游生物群落组成和多样性进行研究,分析其时空分布和群落结构特征 ...
于凌宇
core  

Progress and Application of Entomological Evidence in Forensic Science [PDF]

open access: yes, 2021
Entomological evidence provides entry points and clues for cases detection, in terms of estimation of the postmortem interval (PMI), and place and cause of death.
REN Li-pin, SHANG Yan-jie, GUO Ya-dong
core   +1 more source

Seasonality of temperature dependence of methane fluxes from natural wetlands

open access: yesFunctional Ecology, Volume 39, Issue 9, Page 2383-2397, September 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Temperature dependence is a crucial parameter in estimating methane (CH4) fluxes from natural wetlands, yet our understanding of this parameter remains inadequate. Seasonal fluctuations in water levels and ecosystem productivity lead to seasonal differences in CH4 ...
Jinshuai Li   +6 more
wiley   +1 more source

基于红外相机技术的罗山国家级自然保护区赤狐活动节律

open access: yes野生动物学报, 2020
利用红外相机技术,对宁夏罗山国家级自然保护区夏、秋两季赤狐(Vulpes vulpes)的活动节律进行了研究。结果表明,赤狐在不同月份的日活动差异指数α(t=18359,df=5 ...
李涛 1 孟德怀 2 滕丽微 2   +2 more
doaj  

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  

Dry and Wet Deposition Characteristics and Anthropogenic Sources of Atmospheric Mercury in Xiamen [PDF]

open access: yes, 2016
大气汞是危害人体健康的毒性污染物。大气中不同形态的汞具有不同的理化特性,颗粒态总汞TPM(Totalparticulatemercury)沉降速率高,能在排放源附近沉降,对区域内的生态环境造成较大的危害;大气气态总汞TGM(Totalgaseousmercury)因其具有较低的水溶性和沉降速率,可在大气中停留0.5-2年,能够进行长距离传输,被认为是全球性污染物。目前欧美地区已经广泛地建立起汞监测网络,虽然国内的大气汞监测也陆续开展起来,但是长时间持续监测尚不多见。本研究基于实验室前期的研究成果 ...
陈强
core  

Dynamic control of working slope shape and optimization of advance speed in seasonally stripped open-pit coal mine [PDF]

open access: yes, 2023
Due to the discontinuity of the stripping project in seasonal stripping open-pit coal mines, the untimely advance distance of the working slope is huge. In order to reduce the advance stripping and save the stripping distance, research was carried out on
Bo CAO   +3 more
core   +1 more source

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