Results 41 to 50 of about 9,411 (205)
Conservation Biology, EarlyView.Abstract Consumer demand for ivory perpetuates the unsustainable and illegal killing of African elephants and other wildlife species. Interventions that aim to change consumer behavior are increasingly recognized as a crucial element of demand management. However, poor design and implementation have limited their effectiveness.
Molly R. C. Brown +2 more
wiley +1 more source
野生动物学报, 1992 伴随着自然保护事业的发展,1988年10月,西藏自治区人民政府批准建立了珠穆朗玛峰自然保护区（以下简称:珠峰自然保护区）。她的出现,象怒放的雪莲,为大自然增添了无限春色,引起了国内外关心自然保护事业的人们和有关组织的关注。珠峰自然保护区位于西藏自治区与尼泊尔王国交界处,大致在北纬27°48′—29°19′,东经84°27′—88°之间,面积3.3万余平方公里,平均海拔在4000米以上,相对高差达7408米（1440米—8848米）,是世界上海拔最高的自然保护区。
贺文利, 胡胜昌
doaj
Zhejiang Daxue xuebao. Lixue ban, 2015 基于浙江天目山国家级自然保护区常绿落叶阔叶混交林1 hm2样地调查数据，采用空间代替时间和点格局分析法，探究了交让木种群的结构特征、不同生长阶段的空间分布格局及其相互关系.结果表明：(1)交让木种群的径级结构大体呈倒J型，属增长型种群.(2)排除生境异质性影响，交让木幼苗、幼树、中树以及整个种群在1~3 m尺度上呈现微弱的均匀分布格局，其他尺度上呈现随机分布格局.(3)交让木中树与幼树之间基本呈微弱的负相关或无关联性；幼树与幼苗在小尺度区域内呈负相关，随空间尺度增大负相关性减弱至无关联性 ...
ZHAOMingshui(赵明水) +4 more
doaj +1 more source
, 2002 The flora of Hong Kong has been well-surveyed since the mid nineteenth century and has had a long history of alien plant invasions. To the present day, more than 2130 wild plant species have been recorded, including 238 species that are probably ...
Corlett, RT, Ng, SC
core
How much biotic nativeness matters across human demographic groups
Conservation Biology, EarlyView.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
Spatial and temporal distribution of microphytobenthic composition and primary production and their controlling factors in subtropical intertidal areas [PDF]
, 2016 作为近岸潮间带中最主要的初级生产者，底栖微藻是滩涂初级生产力的主要贡献者。对底栖微藻初级生产力及其调控机制的研究，主要集中于中纬度温带地区，而对亚热带生态系统的研究则较少。本论文针对“亚热带潮间带底栖微藻初级生产力及其调控因子”这一科学问题，于2014年5月至2016年3月，分别于厦门湾、漳江河口区及漳江口红树林保护区，应用显微镜、高效液相色谱及红外气体分析仪，研究了潮间带不同类型的光滩底栖微藻种类组成、光合色素组成及初级生产力的时空分布特征，同时探讨了影响底栖微藻群落组成和初级生产力分布变化的环境因子，
王源勇
core
, 2017 2011-2012年间对扎龙国家级自然保护区的藻类标本进行采集及观察鉴定.研究发现，该区域鼓藻类植物生物多样性较高，共观察到90个分类单位.研究过程中发现宽带鼓藻属的一个新种——Pleurotaenium parvulum Li，Fan & Wei.该物种特征为植物体单细胞，细胞小型，长圆柱形；半细胞顶端平截，其缘边横断面可见5个小结节；细胞壁平滑或具点纹；半细胞具两个轴生星状的色素体，每个色素体具1个蛋白核.本文比较了该物种与其相近种类之间的差异.
付志鑫 +7 more
semanticscholar +1 more source
Differences in characteristics between naturalized threatened plants and other threatened plants
Conservation 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
Mass mortality of mangroves in Qingmeigang Bay, Sanya—an indication of mangrove fate resulted from accelerated sea-level rise in the future [PDF]
, 2015 在全球变化的各种效应中，海平面的上升是对红树林最大的威胁之一。发生在海南三亚青梅港红树林自然保护区的红树林突发大面积死亡事件作为海岸工程引起红树林淹水时间与深度增加并导致红树林大规模死亡的特例为研究海平面上升对红树林影响提供一个新的角度。未来不断上升的海平面对红树林的破坏作用在此次事件中被间接反映出来。对青梅港红树林死亡事件的调查研究不仅为青梅港地区红树林的恢复、管理提供理论依据，而且对于探讨海平面上升对红树林的影响存在重要意义 ...
傅海峰
core
Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source