Results 31 to 40 of about 13,867 (169)

Temperature and the evolution of flower color: A review

open access: yesAmerican Journal of Botany, Volume 113, Issue 1, January 2026.
Abstract Flower colors brighten our natural world. How and why have they evolved? How might ongoing global warming alter their evolutionary trajectories? In this review, I examine the influence of ambient temperature on the evolution of flower color.
Elizabeth P. Lacey
wiley   +1 more source

红壤侵蚀退化坡面植被恢复过程中的水土保持效益演变

open access: yesShuitu Baochi Xuebao, 2022
为探究花岗岩红壤侵蚀退化坡面植草措施实施中植被在不同生长阶段水土保持效益的演变规律,设置条带型(D1)、随机型(D2)、斑块型(D3)3种不同植草格局坡面,并以侵蚀退化裸地坡面(CK)作为对照开展试验,在天然降雨条件下监测整个植被生长过程中的坡面土壤侵蚀变化特征。结果表明:(1)植被的生长可显著提升坡面的水土保持能力,随着植被生长阶段的推进,坡面的产流产沙量明显下降,减流效益达20.74%~79.03%,减沙效益达97.42%~99.40%,但在不同降雨类型下,随着植被生长 ...
黄博文   +4 more
doaj  

牛山湖两种不同生境小型鱼类的种类组成、多样性和密度 [PDF]

open access: yes, 2007
研究了2003年春季浅水草型湖泊牛山湖小型鱼类空间分布(种类组成、多样性和密度等)与生境异质性之间的关系.根据水生植被状况、离岸距离和水深,选择了两种差异较大且有代表性的生境类型,即近岸沉水植物茂密的生境A和远岸沉水植物稀疏的生境B.使用围网(180m2)在这两种生境中进行小型鱼类的采样,采用多次标志回捕法和Zippin去除法估算了围网内小型鱼类的密度.结果表明,两种不同生境中小型鱼类的种类组成、多样性度量值和密度估算值均存在一定程度的差异:1)生境A中的渔获物由5科14种小型鱼类组成 ...
叶少文, 曹文宣, 李钟杰
core  

Robust metrics for quantifying and comparing resistance and recovery in experimental studies

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 1, Page 6-14, January 2026.
Abstract Various indices have been developed to experimentally quantify resistance and recovery (two components of engineering resilience) in response to anthropogenic and natural disturbances. This diversity complicates the selection of appropriate metrics for comparing resilience across ecosystems and studies.
Zewei Zhuang   +2 more
wiley   +1 more source

Aerodynamical properties of an air layer affected by vegetation [PDF]

open access: yes, 1983
Thesis--University of Tsukuba, D.Sc. (B), no. 118, 1983.
Hayashi Yosei, 林 陽生
core  

Conserved spatial patterning of gene expression in independent lineages of C4 plants

open access: yesNew Phytologist, Volume 249, Issue 1, Page 24-38, January 2026.
Summary C4 photosynthesis enhances carbon fixation efficiency by reducing photorespiration through the use of an oxygen‐insensitive carboxylase and spatial separation of photosynthesis between mesophyll and bundle sheath cells. The C4 pathway has evolved independently in > 60 plant lineages, but molecular mechanisms underpinning this convergence remain
Tianshu Sun   +4 more
wiley   +1 more source

StudyontheStructureandCompositionofForestof HuangshanScenicArea [PDF]

open access: yes, 2016
为了全面了解黄山风景名胜区主要森林群落类型、植物物种多样性及其分布状况,本文选择了天海景区、北海景区、玉屏景区、西海景区、温泉景区、云谷景区、浮溪保护区、西大门等多个区域,通过样线法和典型样地法相结合,在4条样线、62个样地群落调查基础上,结合前人研究成果,分别从植物区系成分、植被类型分类、珍稀濒危植物、群落物种多样性特征、群落的海拔梯度变化等方面进行综合研究。主要研究结果如下: (1)黄山风景名胜区植物种类丰富,区系成分复杂。共有种子植物173科648属1483种(包括变种、亚种和变型),其中 ...
吕霖
core  

A multiscale growth atlas of Arabidopsis: linking cell dynamics to organ development

open access: yesNew Phytologist, Volume 249, Issue 1, Page 299-324, January 2026.
Summary Plant development depends on coordinated growth at cellular and organ scales, yet comparative analyses are hindered by inconsistent reporting of growth across studies. We conducted a meta‐analysis of Arabidopsis thaliana growth dynamics, integrating data from 176 studies to create the first multiscale atlas of plant growth.
Viraj Alimchandani   +2 more
wiley   +1 more source

几种挺水植物净化生活污水总氮和总磷效果的研究

open access: yesShuitu Baochi Xuebao, 2004
研究了石菖蒲、灯心草和蝴蝶花3种不同植被系统、基质为河砂的潜流型人工湿地净化生活污水总氮和总磷的效果,并同无植被系统、相同基质的潜流型人工湿地净化效果进行了比较,结果表明:在较低浓度范围里无植被的人工湿地和3种有植被的人工湿地对污水中总氮有较好的去除作用,随着污水中总氮浓度的增加,虽然无植被的人工湿地和有植被的人工湿地去除总氮的效果均有下降的趋势,但有植被的人工湿地仍然能维持较高的总氮去除水平,无植被的人工湿地总氮去除效果则下降较快。在有植被的人工湿地中,以石菖蒲植被人工湿地氮素净化能力最强 ...
袁东海 高士祥 任全进 尹大强 王连生
doaj  

Cryptic signals: substomatal architecture influences stomatal responses to red light and CO2

open access: yesNew Phytologist, Volume 249, Issue 1, Page 181-188, January 2026.
Summary The mesophyll provides a critical signal for stomatal responses to red light (RL) and CO2 in angiosperms. By contrast, the stomatal response to blue light (BL) is largely guard cell‐specific. It is not known whether substomatal or mesophyll anatomy influences the effectiveness of the mesophyll signal driving stomatal responses to RL and CO2 ...
Muhammad Haroon   +4 more
wiley   +1 more source

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