Results 31 to 40 of about 1,617 (167)

The impacts of habitat heterogeneity of mangroves on mollusks diversity at Dongzhaigang Bay, Hainan [PDF]

open access: yes, 2016
包括软体动物在内的大型底栖动物是红树林生态系统的重要组成部分,几乎在所有的红树林生境类型中都能够发现它们的存在,其在红树林中占据了重要的生态位,通过穴居、取食等活动改变着红树林有机物循环的物理和化学过程,对红树林生态系统的结构和功能的维持具有非常重要的作用,是红树林生态系统中食物网的重要环节。本文选取了海南省东寨港国家级自然保护区内三个不同地点的红树林从空间尺度方面对其中的软体动物分布进行了研究。此外还比较了不同地点的红树植物群落内软体动物分布的特点。 选择了海南东寨港的湾口(塔市)、中部(后排 ...
章慧
core  

In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle

open access: yesConservation Biology, EarlyView.
Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla   +4 more
wiley   +1 more source

城市野生动物栖息地保护模式探讨——以上海市为例

open access: yes野生动物学报, 2015
野生动物栖息地是生物多样性保护的研究热点之一,也是国家和地区生态安全及生态管理的关注对象。本文突破了传统意义上只注重野生动物自然分布单一角度的研究模式,探讨从野生动物资源自然分布和城市管理双维度分析城市野生动物栖息地的分布现状,寻找“自然生态与城市管理”的耦合点,以上海市为例分析城市野生动物栖息地的分布、类型、特点、保护管理现状及面临的问题。本研究在分析野生动物栖息地基础上,查阅相关文献及材料,结合上海的实际情况,提出了适合高度城市化地区的野生动物栖息地保护模式,具体包括自然保护区保护模式 ...
张秩通 张恩迪
doaj  

A study of carbon fixation and proteomic analysis of a deep-sea Roseobacter bacteria [PDF]

open access: yes, 2016
玫瑰杆菌类群(Roseobacterbacteriaclade)是海洋微型生物α-变形菌中红螺菌科的主要分支,在海洋中分布广泛、普遍存在,并参与海洋碳循环和硫循环。该类群系统发育相近,但具有非常丰富的形态和生理特征。玫瑰杆菌生活环境多样复杂,生存代谢方式受到环境的影响呈现多样化,并具有一定的灵活性。人们对分布在近岸、表层及深海沉积物的可培养的玫瑰杆菌已有相当认识,但处于深海这片广阔区域的玫瑰杆菌却少有分离及培养 ...
杨玉洁
core  

Prioritizing bat roosts for conservation with a global multicriteria bat roost priority index based on community science

open access: yesConservation Biology, EarlyView.
Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch   +6 more
wiley   +1 more source

太行山脉中南部华北豹活动时间的周期性特征

open access: yes野生动物学报, 2022
动物栖息地利用的时间特征是动物生存策略的重要体现,也一直是生态保护和研究领域不可或缺的基础研究之一。华北豹(Panthera pardus japonensis)作为唯一生存于中国的豹亚种,是华北森林生态系统中的顶级捕食者,探究华北豹栖息地内的活动时间特征对开展华北豹种群及栖息地恢复等保护工作具有重大意义。本研究通过红外自动相机监测技术获取华北豹活动的时间数据,采用小波分析方法对华北豹活动的时间特征进行可视化处理,以揭示华北豹对栖息地利用的时间规律。华北豹的活动时间存在明显的周期性 ...
周泽英, 齐进哲, 姜广顺
doaj  

Endemic plants in coastal zone and islands in South China and construction of vegetation landscape on islands [PDF]

open access: yes, 2015
我国南方海岸带及海岛有丰富的植物资源。在海岸带及海岛大开发的背景下,植物资源的保护和合理利用在构建生态安全屏障、绿化和美化方面具有举足轻重的地位。由于生境特殊,海岸带及海岛植物具有特有种比例高和分布区狭窄的特点。在自然因素和人为因素的双重作用下,我国南方海岸带及海岛植物资源正在经历大规模的衰退。此外,土壤盐渍化、盐雾、干旱及大风等不利环境条件给沿海防护林建设、城镇和道路绿化、海岛植被修复等带来了诸多困难,盐害问题日益突出。抗风、耐土壤盐、耐盐雾植物资源的筛选和利用,以提高存活率 ...
张琳婷
core  

Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves

open access: yesConservation Biology, EarlyView.
Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey   +39 more
wiley   +1 more source

Population genetic variation and symbiotic and associated bacteria diversity studies of bryozoan Bugula neritina based on high-throughput sequencing [PDF]

open access: yes, 2016
多室草苔虫是一种重要的药源生物,从这种生物体内提取出的多种草苔虫内酯被证明有着较强的抗癌活性,其中草苔虫内酯bryostatin1是治疗阿尔茨海默症和多种癌症的最有希望的药物来源,而草苔虫内酯bryostatin1的产生与多室草苔虫体内的共生细菌“CandidatusEndobugulasertula”密切相关。然而,国内学者从中国沿海的多室草苔虫中却一直未能成功提取出这种最具药用价值的草苔虫内酯bryostatin1 ...
李海
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

Home - About - Disclaimer - Privacy