Results 51 to 60 of about 18,171 (208)

World‐wide impacts of climate change and nitrogen deposition on vegetation structure, composition, and functioning of shrublands

open access: yesNew Phytologist, Volume 247, Issue 3, Page 1117-1128, August 2025.
Summary Environmental changes and their effects are among the most pressing topics of today's ecological research. Shrublands, although widespread across the globe, remain understudied in this respect. We conducted a global meta‐analysis of 81 shrubland sites subjected to experimental warming, shifts in precipitation (e.g.
Daijun Liu   +11 more
wiley   +1 more source

Simple sequence repeats and their expansions: role in plant development, environmental response and adaptation

open access: yesNew Phytologist, Volume 247, Issue 2, Page 504-517, July 2025.
Summary Repetitive DNA is a feature of all organisms, ranging from archaea and plants to humans. DNA repeats can be seen both in coding and in noncoding regions of the genome. Due to the recurring nature of the sequences, simple DNA repeats tend to be more prone to errors during replication and repair, resulting in variability in their unit length ...
Sridevi Sureshkumar   +3 more
wiley   +1 more source

企业与生物多样性:《生物多样性公约》新议题的产生与谈判进展

open access: yes, 2015
《生物多样性公约》(以下简称《公约》)是三大环境国际公约之一。随着《公约》谈判的不断推进,企业与生物多样性(Business and Biodiversity)逐渐由《公约》中的一个概念发展成为《公约》谈判中的一个重要议题。1996年召开的《公约》缔约方大会第三次会议(COP-3)首次提出企业(私营部门)参与生物多样性的概念后,COP-5将企业参与列入《公约》议题,COP-6正式将企业参与纳入《公约》全球战略,COP-8首次将企业参与生物多样性单独纳入《公约》决定 ...
Ai Wang, Jianyong Wu, Jixin Liu
semanticscholar   +1 more source

一株防治花生采后黄曲霉污染的拮抗菌的 筛选及其防控效果Screening of biocontrol bacteria against peanut postharvest Aspergillus flavus contamination and its prevention effect

open access: yesZhongguo youzhi
为预防花生储藏过程中的黄曲霉污染,从农田土中分离出2株拮抗芽孢杆菌,通过平板对峙法优选出1株作为研究对象,研究其对黄曲霉的抑制效果及对花生采后黄曲霉污染的防控效果。采用平板对峙法检测拮抗菌的抑菌广谱性并绘制生长曲线,并通过生理生化实验、形态特征观察及16S rDNA序列分析对该菌株进行鉴定。结果表明:优选出拮抗菌B419作为研究对象,其可有效抑制黄曲霉的生长,在拮抗菌浓度为1.0×106 CFU/mL,黄曲霉孢子浓度为1.0×103 CFU/mL时,黄曲霉孢子萌发抑制率达到98 ...
郑爱芳1,2,3,4, 何欢1, 高晔1, 张名雪1, 王煦1, 赵凯1,2 ZHENG Aifang1,2,3,4, HE Huan1, GAO Ye1, ZHANG Mingxue1, WANG Xu1,ZHAO Kai1,2
doaj   +1 more source

Wild Cicer species exhibit superior leaf photosynthetic phosphorus‐ and water‐use efficiencies compared with cultivated chickpea under low‐phosphorus conditions

open access: yesNew Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.
Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang   +8 more
wiley   +1 more source

灭鼠对草地物种多样性保护引发的思考

open access: yes野生动物学报, 2007
草地灭鼠是草原建设与畜牧业发展的主要措施之一。然而,由此对草地物种多样性造成的影响与危害却为人们所忽视。通过分析草地动物生态特点,探讨灭鼠对物种多样性保护造成的影响与威胁,以引起社会的关注,维护草地生态系统的完整。
郑杰, 蔡平
doaj  

Phylogenomic insights into the relationship and the evolutionary history of planthoppers (Insecta: Hemiptera: Fulgoromorpha) 基于基因组的系统发育分析为蜡蝉亚目(Fulgoromorpha)的系统发育关系及进化提供新见解

open access: yesSystematic Entomology, Volume 50, Issue 3, Page 495-518, July 2025.
Using genomic data from 285 species across 19 planthopper families, we conducted the first phylogenomic study targeting global planthoppers and inferred their phylogeny with the highest resolution so far. We proposed taxonomic changes including the establishment of a new family Borysthenidae stat. rev. and a new superfamily Meenoploidea superfam.
Junchen Deng   +9 more
wiley   +1 more source

狼尾草和白茅生境鸟类群落研究

open access: yes野生动物学报, 2018
2010~2012年,采用样线法对江苏省大丰麋鹿国家级自然保护区狼尾草和白茅生境中的鸟类群落进行了研究。共记录到鸟类127种,狼尾草和白茅生境中分别记录鸟类102和103种,隶属14目43科,其中雀形目鸟类56种。狼尾草和白茅生境中鸟类数量2011年最多,2010年次之,2012年最少,但差异不显著(χ2=2.195,df=2,P=0.334>0.05); 以冬季鸟类数量最多,秋季、夏季次之,春季最少,差异不显著(χ2=2.799,df=3,P=0.424>0.05)。年份间两种生境鸟类物种数 ...
刘 彬 孙大明 王立波 沈 华 薛丹丹 原宝东
doaj  

生态旅游与生物多样性保护

open access: yes野生动物学报, 1999
由于世界人口激增,加速了对自然资源的开发和对环境的破坏,当今人类已陷于粮食短缺、资源匮乏、生态失调、环境恶化的四面楚歌之中.而生物多样性丧失、全球气候变化及持续生态系统更被列为本世纪后期生态学和环境学的热点议题.对生物多样性价值的认识也不断深入.
张杰, 张华
doaj  

生境因子对向海保护区秋季迁徙期鸟类多样性的影响

open access: yes野生动物学报, 2021
2016—2018年秋季(9—11月),以定点观测方式布设225个观察点,对吉林向海国家级自然保护区的鸟类进行调查,以ArcGIS 103通过导入坐标点的方法将观察点落入3 km×3 km网格中,通过对Landsat 8影像进行监督分类以及对数字高程图(DEM)进行数据提取得到生境因子信息,然后利用ArcGIS 103获取各网格的生境因子信息,包括距耕地距离、距林地距离、距水体距离、海拔、坡度、坡向等。利用Excel以及香农-维纳指数、均匀性指数 ...
杨飞飞 1# 利世锋 1   +1 more
doaj  

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