Results 11 to 20 of about 14,805 (141)
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee +5 more
wiley +1 more source
Urbanization may alter bird foraging. Austral Parakeets (Enicognathus ferrugineus) in Patagonia rely on introduced plants in urban areas, especially in winter, despite preferring natives in the wild. This seasonal reliance on introduced species highlights urbanization trade‐offs and underscores the need to manage green areas with native plants to ...
Rocío Bahía +2 more
wiley +1 more source
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
外墙保温性能是制约装配式钢结构建筑推广应用的关键问题之一,目前对于钢结构外围护体系热工性能的研究还不充分,尚无关于我国严寒地区钢结构框架-ALC外墙传热机理和热桥效应的相关研究。针对严寒地区气候特点和建筑节能要求,基于ABAQUS软件,开展了钢结构框架-ALC外墙的传热性能有限元分析,揭示了钢梁、钢管混凝土柱以及梁柱节点等对墙体热工性能的影响机理,分析了保温体系类型、保温层热阻、ALC墙板热阻、钢梁连接件类型、框架柱截面形式、有无楼板等对墙体平均传热系数、热桥效应和内表面温度的影响。结果表明 ...
张相勇 +5 more
doaj
Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
wiley +1 more source
通过对低相对分子质量聚异丁烯产物端基结构的测定,研究了BF3/MTBE、BF3/甲醇、BF3/乙醇和BF3/丙醇引发体系对聚异丁烯端基结构的影响,同时考察溶剂种类及聚合反应时间对聚异丁烯端基结构的影响.实验结果表明,对于BF3引发剂体系,络合引发剂的阳离子部分对聚异丁烯的端基结构影响不大,反阴离子部分烷基取代基的不同会影响产物的各种端基摩尔分数;相比非极性正己烷溶剂,极性二氯甲烷溶剂更有利于减少异构化的程度;同时,异构化的程度随着反应的进行会逐渐增加.
ZHANGXiang-bin(张向斌) +4 more
doaj +1 more source
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
Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
为了揭示超高层建筑施工顶模大平台体系整体顶升时的动力响应特征,基于LS-DYNA程序,提出了“升温顶升”的模拟方法,构建了系统的显式动力计算模型,实现了系统顶升过程的动力分析。通过对实际工况的反演模拟明确了该体系顶升过程中的动力响应,并根据计算结果提出了系统主要结构的优化设计措施。进一步研究了0.005~0.1 m·s-2不同顶升加速度工况下系统关键构件及支座的动力响应特征,明确了不同顶升加速度下系统关键构件内力及支座反力的动力影响系数,据此确定了顶升加速度安全控制阈值 ...
廖林绪 +5 more
doaj
Perceived costs as drivers of wildlife management preferences in rural Tanzanian communities
Abstract Effectively managing human–wildlife interactions is crucial for fostering coexistence on shared landscapes. Management options are most effective when aligned with the preferences of people directly affected by wildlife, yet little is known about how socioecological factors influence these preferences.
Christian Kiffner +10 more
wiley +1 more source

