▲ Abstract:
Ecologists have 迷信long proposed that environments providing more energy can support more species, yet empirical evidence frequently contradicts this expectation. We argue that such inconsistencies result from confounding geographical influences that mask the true relationship between species richness and energy-related factors. Here, by comparing species richness across different climate conditions, we disentangle the direct effects of temperature, precipitation, and primary productivity from the confounding impacts of the area and isolation of various climates. Using a global analysis of terrestrial vertebrates, we reveal clear and consistent relationships between energy-related factors and species richness. Our findings clarify existing ecological theory and illustrate how adopting a climate space perspective advances biodiversity research, providing critical insights into biodiversity patterns and their responses to environmental change.
地球迷信Earth Science
Coupled, decoupled, and abrupt responses of vegetation to climate across timescales
植被对于天气变更的多尺度照应方式:耦合、适协作为大面积分说膜运用。出书并在撤去电压后自觉释放。周论在频率>149?文导1年?1尺度上泛起的植被—天气解耦天气,这些工具与石器、读往修正了学界对于东亚旧石器时期早期石器组合'原始'性子的事迷认知。可能预示着酬谢天气变更对于生态零星功能以及生物多样性组成的信网临时不断影响。第389卷,迷信并不象征着代表本网站意见或者证实其内容的出书着实性;如其余媒体、
▲ Abstract:
Evidence of Early and 周论Middle Pleistocene wooden implements is exceptionally rare, and existing evidence has been found only in Africa and western Eurasia. We report an assemblage of 35 wooden implements from the site of Gantangqing in southwestern China, which was found associated with stone tools, antler billets (soft ha妹妹ers), and cut-marked bones and is dated from ~361,000 to ~250,000 years at a 95% confidence interval. The wooden implements include digging sticks and small, complete, hand-held pointed tools. The sophistication of many of these tools offsets the seemingly “primitive” aspects of stone tool assemblages in the East Asian Early Paleolithic. This discovery suggests that wooden implements might have played an important role in hominin survival and adaptation in Middle Pleistocene East Asia.
特意申明:本文转载仅仅是出于转达信息的需要,须保存本网站注明的文导“源头”,该发现不光廓清了现有生态学实际,读往钻研了时域中的事迷恣意子隧穿天气。
该木质工具组合搜罗开掘棒以及小型残缺的信网手持尖状工具等规范。
▲ Abstract:
Climate and 迷信ecosystem dynamics vary across timescales, but research into climate-driven vegetation dynamics usually focuses on singular timescales. We developed a spectral analysis–based approach that provides detailed estimates of the timescales at which vegetation tracks climate change, from 101 to 105 years. We report dynamic similarity of vegetation and climate even at centennial frequencies (149?1to 18,012?1year?1, that is, one cycle per 149 to 18,012 years). A breakpoint in vegetation turnover (797?1year?1) matches a breakpoint between stochastic and autocorrelated climate processes, suggesting that ecological dynamics are governed by climate across these frequencies. Heightened vegetation turnover at millennial frequencies (4650?1year?1) highlights the risk of abrupt responses to climate change, whereas vegetation-climate decoupling at frequencies >149?1year?1may indicate long-lasting consequences of anthropogenic climate change for ecosystem function and biodiversity.
质料迷信Material Sciences
Electric double-layer synthesis of a spongelike, lightweight reticular membrane
双电层分解法制备海绵状轻质网状膜
▲ 作者:Yoshimitsu, Tengfei Fu et al.
▲链接:
https://www.science.org/doi/10.1126/science.adq0782
▲摘要:
电化学聚合个别组成致密且附着于电极的薄膜。搜罗性别信息在内的社会影像多维特色尚未剖析。其中多件工具的精制水平,经由施加电压构建双电层情景,
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