Results 31 to 40 of about 836 (145)
Macrofaunal community at three habitats in the 14th Yong intertidal zone of Nansha,Guangzhou [PDF]
为了解广州南沙十四涌潮间带大型底栖动物的群落结构,于2007和2008年在十四涌潮间带选择光滩、海桑(SOnnErATIA)和茳芏(CyPEruS MAlACCEnSIS)3种生境进行大型底栖动物调查。对4个季度定量取样获得的大型底栖动物群落结构和差异进行比较分析,结果表明:从种数、平均生物量和丰度指数上看,茳芏生境最多,光滩第二,海桑生境最少;从大型底栖动物平均密度、种类多样性指数和均匀性指数上看,光滩最高,茳芏第二,海桑生境最低。AnOVA分析表明,3种生境间大型底栖动物的物种数、密度均呈显著差异 ...
刘莎 +7 more
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Lessons from an eradication under multiple constraints of an island rat population of record density
Abstract Invasive rats threaten island biodiversity, disrupting ecosystems and endangering native species. Although rat eradication has succeeded on many islands, tropical islands present unique management challenges. Strict regulations and financial constraints on some tropical islands further limit proven eradication methods, complicating rodent ...
Tatiane Micheletti +7 more
wiley +1 more source
鸟类多样性是生物多样性的重要组成部分,研究孔林的鸟类多样性对孔林生态环境保护具有重要意义。2015年5月至2016年6月,采用样线法对孔林鸟类进行了调查,共记录到鸟类14目33科71种,其中留鸟33种,夏候鸟16种,冬候鸟8种,旅鸟14种。区系方面,古北界鸟类种类最多,占43.7%。食性方面,食虫鸟类最多,占40.9%。孔林内春季的鸟类多样性指数(2.990 6)和均匀度指数(0.753 3)最高; 冬季鸟类优势度(0.203 2)最高。根据记录到的鸟类种类和数量,对鸟类群落特征及其季节变化进行了分析 ...
孙太福 聂圣鸿 国天曰 王 旭 高 欣 高晓冬 陈 磊
doaj
Inter-regional biological invasion in China:Present status and countermeasures [PDF]
区域间生物入侵是指国家内部不同区域间物种入侵所引发的危害。由于我国生态系统错综多样,国内人员、物品流动频繁且不易监控,因此区域间生物入侵危害已经十分严峻。本文主要以我国以及国外已有的区域间生物入侵事件为例,分析其主要的入侵途径、危害与防治措施。区域间生物入侵主要通过引种、运输、人为干扰等途径,可以造成土著种灭绝、基因污染、生物多样性降低等危害。全球气候变化、南水北调等大型工程建设以及海峡两岸交流等领域是今后我国区域间生物入侵研究的主要方向。Inter-regional biological ...
冯砚艳 +4 more
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A link between increased temperature and avian body condition in a logged tropical forest
Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
wiley +1 more source
Species diversity in mangrove wetlands of China and its causation analyses [PDF]
作者简介: 何斌源( 1969 ~ ), 男, 广西东兴市人, 博士生, 主要从事海洋生态学研究. E-mail: hebinyuan2003@yahoo.com.cn * 通讯作者Corresponding author. E-mai:l fanhq@ppp.nn.gx.cn[中文文摘]目前中国红树林湿地共记录了2854种生物,包括真菌136种、放线菌13种、细菌7种、小型藻类441种、大型藻类55种、维管束植物37种、浮游动物109种、底栖动物873种、游泳动物258种、昆虫434种、蜘蛛31种 ...
何斌源(广西红树林研究中心) +4 more
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How much biotic nativeness matters across human demographic groups
Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley +1 more source
Study on coastal ecological safety assessment mode and case studies [PDF]
安全是一个古老而新兴的概念,生态安全是安全概念的演变结果之一,与生态风险、生态健康、生态脆弱性、可持续发展有着密切的联系。海岸带是陆地和海洋系统的交界地带,是地球上水圈、岩石圈、大气圈和生物圈相互作用最频繁、最活跃的地带。伴随着我国经济社会的发展,海岸带地区人类社会与生态环境之间的矛盾日益凸现,海岸带生态安全是实现海岸带可持续发展的重要手段,也是追求海岸带人与自然和谐相处的保障。作为典型的生态脆弱带和人为活动密集区,海岸带生态安全问题亟待解决,但目前对于海岸带生态安全的相关研究很少,且较为分散 ...
吝涛
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Informing spatial conservation prioritization with species’ traits
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
Heavy metal distribution in Egretta eulophotes in some islands of Fujian [PDF]
2006年7月-8月在漳埔地区菜屿,福鼎日屿采集到黄嘴白鹭(Egrettaeulophotes)雏鸟,卵壳以及雏鸟呕吐出的食物团,厦门大屿取得黄嘴白鹭成鸟样本。采用微波消解和电感耦合等离子体质谱(ICP-MS)测定不同组织,卵壳和食物团中的钒(V),铬(Cr),锰(Mn),铜(Cu),锌(Zn),砷(As),硒(Se),镉(Cd),钡(Ba),铅(Pb),汞(Hg)11种重金属和非金属元素的含量。11种元素在黄嘴白鹭雏鸟各组织和卵壳中的残留量各不相同,但有些元素符合一定的规律,如Zn>Cu> ...
李璠
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