Results 91 to 100 of about 58,899 (239)

Phytoplankton community structure and microbial loop during giant jellyfish blooms in the Yellow Sea [PDF]

open access: yes, 2015
大型水母暴发已是全球性的海洋生态灾害,作为东亚海域水母高发区,黄海的水母暴发已经对生态系统造成了显著影响,然而水母暴发对浮游生态系统影响或生态效应尚不清楚。本论文通过现场大面调查和培养实验等研究手段,利用高效液相色谱、流式细胞仪等多种分析方法,在水母暴发年份对我国黄海大型水母沙海蜇(Nemopilemanomurai)暴发区的浮游植物及微食物环各主要组分相互关系展开研究。根据2011年~2014年航次调查研究和实验生态研究数据,取得以下主要结果: 1 ...
曾阳
core  

Informing spatial conservation prioritization with species’ traits

open access: yesConservation Biology, EarlyView.
Abstract New Guinea, the most botanically diverse island on the planet, is the location for one of the boldest conservation initiatives. The Manokwari Declaration aims to achieve 70% conservation designation for the Bird's Head Peninsula. This is 40% higher than the 2022 Global Biodiversity Framework target.
Liam A. Trethowan   +27 more
wiley   +1 more source

Evaluation and Excavation on Changting Ecotourism Resources [PDF]

open access: yes, 2015
生态旅游作为一种可持续的旅游发展模式,在快速发展,并逐步为游客和从业者所接受,许多景区已经让生态旅游产品为游客服务。 长汀作为一座拥有一千多年历史的国家历史文化名城,有丰富的生物多样性、清澈的河流湿地、唐宋古城墙与古城门、后唐开始修建的汀州府城隍庙、宋代文庙、明代试院、四条古街与百栋古民居。 作为客家人的发祥地和大本营,长汀因此被尊为“客家首府”;它保留了数以百计的宗祠与家庙群,成为一道见证客家文明的窗口;同时,长汀是战争年代的红色政治经济中心和长征出发地,被誉为红色“闽都 ...
朱攀
core  

Differences in characteristics between naturalized threatened plants and other threatened plants

open access: yesConservation Biology, EarlyView.
Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao   +10 more
wiley   +1 more source

Study on phytoplankton community similarity and ecological connectivity in northern Beibu Gulf [PDF]

open access: yes, 2015
浮游植物是海洋生态系统中主要的初级生产者,是构成海洋生态系统食物网的基础环节,其种类变化和群落结构直接影响海洋生态系统的结构和功能,在海洋生态系统的物质循环和能量流动过程中起着重要作用。本文以2006~2007年于北部湾进行的四个航次的调查数据,分析了北部湾北部浮游植物的种类组成、数量变化、群落结构以及生物多样性,探讨了浮游植物的群落演替和群落相似性及生态连通性的调控机制,获得主要结果如下: (1)北部湾北部浮游植物四季共鉴定273种(含变种和变型),隶属于5门78属,种类组成以广温类和暖水类为主 ...
王符菁
core  

Comprehensive framework for assessing and optimizing existing research networks

open access: yesConservation Biology, EarlyView.
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East   +2 more
wiley   +1 more source

长兴水韭,中国水韭属一个四倍体新种

open access: yesGuangxi Zhiwu
水韭属是一类具有异形孢子的古老石松类植物,全属物种均被列入国家重点保护野生植物。该文报道了在浙江省长兴县新发现的一个四倍体水韭属居群。基于形态学、孢粉学和细胞学证据,将该物种命名为长兴水韭(Isoëtes changxingensis),并详细描述了其形态特征。长兴水韭与保东水韭(I. baodongii)在植株形态及孢子纹饰方面都较为相似,不同之处在于其染色体为44条,大孢子极面直径为317~411 μm(平均为360 μm)(vs.染色体22条,大孢子极面直径为390~510 μm,平均为450 ...
童 玲   +7 more
doaj   +1 more source

Urban Forestry Development Administration Discussion:A Case Study of Shanghai's Forest Resource Management [PDF]

open access: yes, 2016
20世纪进入了城市快速发展的时代,城市建设在取得骄人成绩时,却为此付出了城市生态环境恶化的代价。进入21世纪,随着经济的飞速发展,城市的发展更加迅猛,人口高度集中,土地十分紧张,城市森林也不断萎缩,城市的环境仍然日趋恶化。因此,今天的人们越来越意识到生态环境建设的重要性,良好的城市生态环境是人类生存繁衍和社会经济发展的基础,是城市可持续发展的根本保证。发展城市林业,通过建设城市森林来健全城市生态安全体系,倡导城市生态文明,实现城市的可持续发展,已成为时代的迫切要求和人们的强烈愿望。在我国的城市中 ...
胡玮
core  

Representation of obligate groundwater‐dwelling copepod diversity in European protected areas

open access: yesConservation Biology, EarlyView.
Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli   +7 more
wiley   +1 more source

广西苦苣苔科植物一新种——平果报春苣苔

open access: yesGuangxi Zhiwu
该文报道了广西苦苣苔科报春苣苔属(Primulina Hance)一新种——平果报春苣苔(Primulina pingguoensis H. S. Ma & B. Pan),该新种在形态学上与囊筒报春苣苔(P. carinata Y. G. Wei, F. Wen & H. Z. Lü)相似,但两者能明显区别,平果报春苣苔花冠裂片狭披针形至线型,长宽比大于2(vs.圆形至卵圆形,长宽比小于1.5),花冠内部具8~10条紫色条纹,与花冠同色,无明显导蜜线(vs.棕色条纹,与花冠不同色,具两条黄色导蜜线 ...
马 虎生   +3 more
doaj   +1 more source

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