Results 21 to 30 of about 2,730,307 (209)

Using Harvest Data to Assess Factors Influencing Regional Population Declines of Muskrats (Ondatra zibethicus) 利用捕获数据评估影响麝鼠 (Ondatra zibethicus) 区域种群数量下降的相关因素

open access: yesWildlife Letters, EarlyView.
Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller   +5 more
wiley   +1 more source

Wild Pigs (Sus scrofa) Stand Their Ground: Investigating Flight Response, or Lack Thereof, to Perceived Predation Risk 野猪坚守原地:探究其面对感知捕食风险时的逃逸反应 (或无逃逸行为)

open access: yesWildlife Letters, EarlyView.
We used automated behavioral response systems (ABRs) to assess invasive wild pig (Sus scrofa) behavioral response to four auditory playbacks: humans, coyote vocalizations (Canis latrans), pigs in distress, and barred owl (Strix varia) calls. Wild pigs had a significant flight response to human playbacks, but 68% of pigs did not flee.
Justine L. Smith   +2 more
wiley   +1 more source

微气泡催化臭氧化-生化耦合工程装置运行性能

open access: yesGongye shui chuli, 2020
采用首例微气泡催化臭氧化—生化耦合工程装置深度处理煤化工废水,对其长期连续运行性能进行评估。结果表明,该工程装置能够稳定可靠运行,微气泡催化臭氧化可有效降解大分子有机污染物并改善废水可生化性,耦合生化处理可进一步去除小分子产物。较优运行条件下,整体COD去除率为57.5%,臭氧投加量/COD去除量为0.63。生化处理中细菌种群受有机污染物变化和DO浓度影响较大。该工程装置为微气泡催化臭氧化-生化耦合工艺实际应用提供了良好示范。
施佳泽   +5 more
doaj   +2 more sources

Context‐Dependent Effects of Beavers (Castor spp.) on Freshwater Pearl Mussels (Margaritifera margaritifera) in European Rivers 河狸对欧洲河流中的淡水珍珠贝 (Margaritifera margaritifera) 存在情境依赖性影响

open access: yesWildlife Letters, EarlyView.
The study explores how beavers (Castor spp.) affect endangered freshwater pearl mussels (Margaritifera margaritifera) in European rivers. Beaver dams can harm small, fragmented mussel populations by reducing flow, increasing sediment, and potentially limiting host fish movement, while larger populations may benefit from improved bed stability and ...
Louise Lavictoire   +2 more
wiley   +1 more source

可拓学在退化生态系统研究中的探索与应用

open access: yesShuitu Baochi Xuebao, 2002
可拓学是系统科学、思维科学和数学的交叉学科。把可拓学运用于退化生态系统的研究,提出退化生态系统具有发散性、可扩性、相关性和共轭性的特点,并对可拓学在退化生态系统恢复与重建途径决策中的应用作了探索,为生态学研究提供了新的思路。
王小丹 钟祥浩 范建蓉
doaj   +2 more sources

Assessing the Influence of Interference Competition on Ecologically Similar Species Threatened by Habitat Loss 评估干扰性竞争对受栖息地丧失威胁的生态相似物种的影响

open access: yesWildlife Letters, EarlyView.
We staged dyadic interaction trials between two kangaroo rat species threatened by habitat loss to test whether one species dominates in direct interactions in the field. We found that Stephens’ kangaroo rat (Dipodomys stephensi) residents and intruders were dominant over Dulzura kangaroo rat (Dipodomys simulans). These results suggest that D. simulans
Janine N. Straughan   +2 more
wiley   +1 more source

混合炸药废水的厌氧生化可降解性研究

open access: yesGongye shui chuli, 2010
结合火炸药工业生产的工艺特点,针对混合炸药废水的特性,进行了混合炸药废水的厌氧生化可降解性研究。研究结果表明:废水中N、P含量能够满足厌氧微生物的生长需要;COD的去除率为80.1%,厌氧生物可降解性为85.3%,pH的变化也能达到厌氧反应器正常运行的要求;废水中有毒物质的整体毒性抑制作用为26.1%,属于代谢毒素,微生物通过驯化可以适应。实验表明,混合炸药废水具有良好的厌氧生化可降解性,用厌氧生物法处理火炸药废水切实可行。
张瑜   +4 more
doaj   +2 more sources

FoxWatch: A User‐Friendly Tool for Estimating Fox Abundance From Camera Traps Using Simultaneous‐Count Models FoxWatch: 种利用同步计数模型从红外相机数据估算狐狸种群数量的简易工具

open access: yesWildlife Letters, EarlyView.
FoxWatch is a user‐friendly analytical workflow that converts camera‐trap detections into dependable estimates of fox abundance. The user‐friendly Shiny R app standardizes data preparation, employs Simultaneous‐Count Models modeling, and displays uncertainty in clear, comprehensible outputs. By connecting field monitoring with decision‐making, FoxWatch
Duminda S. B. Dissanayake   +1 more
wiley   +1 more source

生物多样性数据论文:规范化和多样化

open access: yes, 2021
2021年10月,联合国《生物多样性公约》第15次缔约方大会(COP15)将在我国昆明举办。会议将审议通过2020后全球生物多样性框架,确定2030年全球生物多样性保护目标。与之密切相关的联合国可持续发展目标(SustainableDevelopmentGoals,SDGs)、生物多样性和生态系统服务政府间科学-政策平台(IPBES)和政府间气候变化专门委员会(IPCC)评估报告等,也对当前和未来的生物多样性保护设定了短期和长期目标 ...
周玉荣, 马克平, 黄晓磊, 张健
core  

含鎳赤血鹽葡萄糖生化感測器

open access: yes, 2009
本文中證實具有混價性質(mixed-valence)的含鎳赤血鹽(nickel(II) hexacyanoferrate)修飾碳糊電極發展成之安培法葡萄糖生化感測器具有很好的選擇性,並有催化雙氧水還原的性質,可發展在低電位操作的葡萄糖生化感測器,有效防止血液中電活性物質的干擾。完成的葡萄糖生化感測器偵測葡萄糖時電流密度 (current density)為0.85mA/(mM×cm2),線性範圍 (linearity range) 達5.5 mM (correlation coefficient=0 ...
林孟山; 賴榮生; 王俊勝
core   +1 more source

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