Results 31 to 40 of about 5,313 (178)
Abstract Social media platforms make choices about what content is and is not permissible on their platforms. For example, choices about if and how to deal with online harassment and hate speech are growing problems in many online settings. But these choices are often opaque, can vary from platform to platform, and can change over time with little ...
Elizabeth Dubois, Anna Reepschlager
wiley +1 more source
Median ovum size (mm; ±1 quartile) of wood frogs from three different wetland classes (long = long hydroperiods, short = short hydroperiods, and fish presence/absence) near Churchill, Manitoba, Canada from 2014 to 2019. Data points are individual egg mass values. Abstract Optimal egg size theory predicts females must balance investment per offspring to
Jon M. Davenport+3 more
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2007年3~11月,通过样带法对内蒙古达赉湖自然保护区内水乌生境利用进行了研究。研究表明,达赉湖保护区不同种水乌的生境利用显著不同,鹳形目、鸥形目和鹈形目鸟类主要选择在河漫滩草甸,鸻形目鸟类主要选择泥岸沼泽,鹤形目和鸊(?)目鸟类主要选择浅水植被区,雁形目鸟类主要选择深水区。
特喜铁, 梁秀梅
doaj
Abstract Generation Z (Gen‐Z), representing a demographic cohort of persons born from 1995 to 2010, has demonstrated their concerns for environmental protection. On September 20, 2019, for example, millions of Gen‐Zs from over 150 different countries across the globe embarked on a protest to pressure decision‐makers and governments to help save the ...
Prasad Siba Borah+2 more
wiley +1 more source
本文建立了扎龙国家自然保护区苍鹭营巢的最适生境选择指数模型。通过对影响苍鹭营巢的主要生境因子水源、植被种类、植被密度和植被高度等进行调查分析,分别建立了相应的选择指数,为苍鹭营巢的生境质量评价提供了一种建模思想。
孙洪志+3 more
doaj
近年来,人类活动范围不断扩大,对雪豹(Panthera uncia)所处高海拔生态系统侵入不断增加,对雪豹生存已造成威胁。准确掌握雪豹生境选择偏好与食源结构特征,可以完善雪豹基础研究,提高雪豹保护管理效率。因此于2019年7月对卧龙自然保护区内雪豹集中分布区域进行野外调查,研究雪豹对各生境因子的选择偏好情况;分析粪便组成,明确雪豹食源结构。结果显示:雪豹偏好于海拔3500—4500 m、坡度31°—45°且地形较为崎岖的无家畜活动区域,在坡位的选择上,雪豹偏好于山脊与上坡位,避开中、下坡位与山谷 ...
洪 洋 张晋东
doaj
Selection of planning unit size in dynamic management strategies to reduce human–wildlife conflict
Abstract Conservation planning traditionally relies upon static reserves; however, there is increasing emphasis on dynamic management (DM) strategies that are flexible in space and time. Due to its novelty, DM lacks best practices to guide design and implementation.
Heather Welch+5 more
wiley +1 more source
Leakage of biodiversity risks under the European Union Biodiversity Strategy 2030
Abstract The European Union Biodiversity Strategy 2030 (EUBDS) aims to regain biodiversity through enhanced forest conservation and protection, which may lead to increased timber harvest in non‐EU countries. We aimed to identify the potential leakage of biodiversity risks as induced by the EUBDS.
Richard Fischer+7 more
wiley +1 more source
确定食物选择性不仅是估计动物生境营养容纳量和进行生境评价及改良等种群管理学问题的基础,它也将为生境选择、建立最优取食模型和探讨种间关系等许多生态学方面的问题提供有价值的信息,因此成为食性研究中一项主要的工作。在国外,食物选择性(food selectivity)这一术语在食性研究中通常与食物偏爱性(food preference)相混淆,在食性文献中常为后者所代替。在国内,食物选择性的确定仅在最近的有蹄类食性研究中得到重视(陈化鹏等1989),并且在已往的食性研究中,主要食物(Principal ...
陈化鹏, 马建章, 高晓芳
doaj
Introducing Elinor for monitoring the governance and management of area‐based conservation
Abstract Monitoring the governance and management effectiveness of area‐based conservation has long been recognized as an important foundation for achieving national and global biodiversity goals and enabling adaptive management. However, there are still many barriers that prevent conservation actors, including those affected by governance and ...
Shauna L. Mahajan+32 more
wiley +1 more source