检索结果-南通市图书馆

Estimating abundance and density of Amur tigers along the Sino- Russian border

Integrative Zoology 2016年第4期11卷 322-332页

作者： Wenhong XIAO Limin FENG Pu MOU dale gmiquelle Mark HEBBLEWHITE Joshua FGOLDBERG Hugh SROBINSON Xiaodan ZHAO Bo ZHOU Tianming WANG Jianping GE State Key Laboratory of Earth Surface Processes and Resource Ecology Ministry of Education Key Laboratory for Biodiversity Science and Engineeringand College of Life SciencesBeijing Normal UniversityBeijingChina Wildlife Biology Program Department of Ecosystem and Conservation SciencesCollege of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA Wildlife Conservation Society BronxNew YorkUSA Department of Ecology Far Eastern Federal UniversityAyaksRusski IslandVladivostokRussia Evolution Ecology and Organismal Biology ProgramDepartment of BiologyUniversity of CaliforniaRiversideCaliforniaUSA Panthera New YorkNYUSA

As an apex predator the Amur tiger(Panthera tigris altaica)could play a pivotal role in maintaining the integrity of forest ecosystems in Northeast Asia.Due to habitat loss and harvest over the past century,tigers rapidly declined in China and are now restricted to the Russian Far East and bordering habitat in nearby China.To facilitate restoration of the tiger in its historical range,reliable estimates of population size are essential to assess effectiveness of conservation interventions.Here we used camera trap data collected in Hunchun National Nature Reserve from April to June 2013 and 2014 to estimate tiger density and abundance using both maximum likelihood and Bayesian spatially explicit capture-recapture(SECR)methods.A minimum of 8 individuals were detected in both sample periods and the documentation of marking behavior and reproduction suggests the presence of a resident population.Using Bayesian SECR modeling within the 11400 km2 state space,density estimates were 0.33 and 0.40 individuals/100 km^(2) in 2013 and 2014,respectively,corresponding to an estimated abundance of 38 and 45 animals for this transboundary Sino-Russian population.In a maximum likelihood framework,we estimated densities of 0.30 and 0.24 individuals/100 km^(2) corresponding to abundances of 34 and 27,in 2013 and 2014,respectively.These density estimates are comparable to other published estimates for resident Amur tiger populations in the Russian Far East.This study reveals promising signs of tiger recovery in Northeast China,and demonstrates the importance of connectivity between the Russian and Chinese populations for recovering tigers in Northeast China.

关键词： Amur tiger camera traps density individual identification spatial capture-recapture

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Happy Bird

引用

小学生时代（大嘴英语） 2024年第4期 18-20页

作者： Claudia Lee-Ottman Lindsay dale-Scott(图) 不详

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Amur tiger in Northeast Asia:Conservation and ecology of an endangered subspecies

引用

Integrative Zoology 2015年第4期10卷 311-314页

作者： dale G.MIQUELLE Wildlife Conservation Society Bronx New YorkUSA

When I first traveled to Russia to begin a radiotelemetry project on Amur tigers,I was operating on the false assumption that we would be“the first”to study and begin to understand the ecology of this northernmost subspecies of tigers.My ignorance was,as it turned out,primarily a language barrier,as nearly all work that had been conducted on this subspecies existed in either Russian or Chinese languages.

关键词： Conservation endangered Northeast

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Review of research methodologies for tigers:Telemetry

引用

Integrative Zoology 2010年第4期5卷 378-389页

作者： Clayton S.MILLER Mark HEBBLEWHITE John M.GOODRICH dale G.MIQUELLE Wildlife Conservation Society BronxNYUSA Wildlife Biology Program College of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA

Over the past half century,wildlife research has relied on technological advances to gain additional insight into the secretive lives of animals.This revolution started in the 1960s with the development of radio telemetry and continues today with the use of Global Positioning System(GPS)-based research techniques.In the present paper we review the history of radio telemetry from its origins with grizzly bears in Yellowstone to its early applications in tiger research and conservation in Asia.We address the different types of data that are available using radio telemetry as opposed to using other research techniques,such as behavioral observations,camera trapping,DNA analysis and scat analysis.In the late 1990s,the rapid development of GPS collar technology revolutionized wildlife research.This new technology has enabled researchers to dramatically improve their ability to gather data on animal movements and ecology.Despite the ecological and conservation benefits of radio telemetry,there have been few telemetry studies of tigers in the wild,and most have been on the Bengal or Amur subspecies.We close with an assessment of the current tiger conservation efforts using GPS technology and discuss how this new information can help to preserve tigers for future generations.

关键词： Global Positioning System technology Panthera tigris radio telemetry research methodologies tiger

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

双光束超分辨光刻技术的发展和未来

引用

科技导报 2024年第8期42卷 21-28页

作者：谢大乐艾星星甘棕松华中科技大学武汉光电国家研究中心武汉430074 华中科技大学信息存储系统教育部重点实验室武汉430074 黄冈师范学院化学化工学院黄冈438000

近年来,随着芯片制造工艺的不断提高,光刻技术发展面临着一些难题,这些难题也影响着芯片行业发展及摩尔定律的持续性。然而,当前主流的极紫外光刻技术已经接近制造极限,需要更先进的技术来突破技术瓶颈。综述了基于双光束超分辨技术的... 详细信息

近年来,随着芯片制造工艺的不断提高,光刻技术发展面临着一些难题,这些难题也影响着芯片行业发展及摩尔定律的持续性。然而,当前主流的极紫外光刻技术已经接近制造极限,需要更先进的技术来突破技术瓶颈。综述了基于双光束超分辨技术的光刻技术概念,并分析了其优势和潜力,同时提出了该技术面临的挑战和可能的解决方案,指出这种新型光刻技术有望在微纳制造领域扮演重要的角色。

关键词：芯片制造光刻技术双光束超分辨

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

沙漠战士角蜥泣血而战的御敌艺术家

引用

环球人文地理 2024年第3期 74-81页

作者：鲨鲨 David McGowen vaclav Scott rodphotography Ted dale qingwa Phil and Karen flickr

关键时刻能用眼睛喷出身体三分之一的血量，静止、伪装、膨胀……得克萨斯州的小小角蜥如同沙漠中的八边形战士，不舍昼夜地研究如何御敌。在长期的生存竞争中，动物们演化出了形形色色的逃生技巧。比如蟾蜍自爆求存，蚂蚁自杀式爆炸袭...

关键时刻能用眼睛喷出身体三分之一的血量，静止、伪装、膨胀……得克萨斯州的小小角蜥如同沙漠中的八边形战士，不舍昼夜地研究如何御敌。在长期的生存竞争中，动物们演化出了形形色色的逃生技巧。比如蟾蜍自爆求存，蚂蚁自杀式爆炸袭击……而最令人惊奇的，则是角蜥的喷血御敌。

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

太空垃圾场

引用

环球科学 2024年第2期 76-79页

作者：亚历克斯·戴尔不详

六十多年前的1957年10月4日,苏联发射了第一颗地球轨道人造卫星斯普特尼克1号。在这个历史性一2的日子里,还诞生了另一项世界第将人造卫星送入太空的运载火箭分离后成为了第一块太空垃圾。太空垃圾,又叫太空碎片,是对遗留在地球轨道上... 详细信息

六十多年前的1957年10月4日,苏联发射了第一颗地球轨道人造卫星斯普特尼克1号。在这个历史性一2的日子里,还诞生了另一项世界第将人造卫星送入太空的运载火箭分离后成为了第一块太空垃圾。太空垃圾,又叫太空碎片,是对遗留在地球轨道上的人造废弃物的统称。它们大小各异,从公交车大小的废弃航天器,到花生、绿豆,乃至灰尘大小的发动机碎片。自1957年以来,围绕地球的太空垃圾数量一直在逐年攀升,目前,美国空间监视网络追踪的大于5厘米的物体已经超过了34600个。

关键词：地球轨道太空碎片空间监视垃圾场网络追踪人造卫星废弃物公交车

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Population dynamics of Amur tigers(Panthera tigris altaica)in Sikhote-Alin Biosphere Zapovednik:1966–2012

引用

Integrative Zoology 2015年第4期10卷 315-328页

作者： dale G.MIQUELLE Evgeny N.SMIRNOV Olga Yu.ZAUMYSLOVA Svetlana V.SOUTYRINA Douglas H.JOHNSON Wildlife Conservation Society BronxNew YorkUSA Sikhote-Alin Biosphere Zapovednik TerneiPrimorskii KraiRussia USGS Northern Prairie Wildlife Research Center Saint PaulMinnesotaUSA

In 2010,the world’s tiger(Panthera tigris)range countries agreed to the goal of doubling tiger numbers over 12 years,but whether such an increase is biologically feasible has not been assessed.Long-term monitoring of tigers in Sikhote-Alin Biosphere Zapovednik(SABZ),Russia provided an opportunity to determine growth rates of a recovering population.A 41-year growth phase was followed by a rapid decline in tiger numbers.Annual growth rates during the growth phase averaged 4.6%,beginning near 10%in the earliest years but quickly dropping below 5%.Sex ratio(females per male)mirrored growth rates,declining as population size increased.The rapid decline from 2009 to 2012 appeared to be tied to multiple factors,including poaching,severe winters and disease.Reproductive indicators of this population are similar to those of Bengal tiger populations,suggesting that growth rates may be similar.These results suggest that,first,tiger populations likely in general grow slowly:3–5%yearly increases are realistic and larger growth rates are likely only when populations are highly depressed,mortality rates are low and prey populations are high relative to numbers of adult females.Second,while more research is needed,it should not be assumed that tiger populations with high prey densities will necessarily grow more quickly than populations with low prey densities.Third,while growth is slow,decline can be rapid.Fourth,because declines can happen so quickly,there is a constant need to monitor populations and be ready to respond with appropriate and timely conservation interventions if tiger populations are to remain secure.Finally,an average annual growth rate across all tiger populations of 6%,required to reach the Global Tiger Initiative’s goal of doubling tiger numbers in 12 years,is a noble but unlikely scenario.

关键词： Amur tiger growth rates population dynamics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mortality of Amur tigers:The more things change,the more they stay the same

引用

Integrative Zoology 2015年第4期10卷 344-353页

作者： Hugh S.ROBINSON John M.GOODRICH dale G.MIQUELLE Clayton S.MILLER Ivan V.SERYODKIN Panthera New YorkNew YorkUSA Wildlife Conservation Society BronxNew YorkUSA Wildlife Biology Program College of Forestry and ConservationUniversity of MontanaMissoulaMontanaUSA Pacific Geographical Institute Far Eastern Branch of the Russian Academy of SciencesVladivostokRussia Far Eastern Federal University VladivostokRussia

Poaching as well as loss of habitat and prey are identified as causes of tiger population declines.Although some studies have examined habitat requirements and prey availability,few studies have quantified cause-specific mortality of tigers.We used cumulative incidence functions(CIFs)to quantify cause-specific mortality rates of tigers,expanding and refining earlier studies to assess the potential impact of a newly emerging disease.To quantify changes in tiger mortality over time,we re-examined data first collected by Goodrich et al.(2008;study period 1:1992–2004)as well as new telemetry data collected since January 2005(study period 2:2005–2012)using a total of 57 tigers(27 males and 30 females)monitored for an average of 747 days(range 26–4718 days).Across the entire study period(1992 to 2012)we found an estimated average annual survival rate of 0.75 for all tigers combined.Poaching was the primary cause of mortality during both study periods,followed by suspected poaching,distemper and natural/unknown causes.Since 2005,poaching mortality has remained relatively constant and,if combined with suspected poaching,may account for a loss of 17–19%of the population each year.Canine distemper virus(CDV)may be an additive form of mortality to the population,currently accounting for an additional 5%.Despite this relatively new source of mortality,poaching remains the main threat to Amur tiger survival and,therefore,population growth.

关键词： canine distemper virus cause-specific mortality cumulative incidence function Panthera tigris altaica poaching

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Zinc in plants:Integrating homeostasis and biofortification

引用

Molecular Plant 2022年第1期15卷 65-85页

作者： Camilla Stanton dale Sanders Ute Krämer Dorina Podar John Innes Centre Colney LaneNorwichNR47UHUK Molecular Genetics and Physiology of Plants Ruhr University Bochum44801 BochumGermany Department of Molecular Biology and Biotechnology and Centre for Systems Biology Biodiversity and BioresourcesBabes-Bolyai University400084 Cluj-NapocaRomania

Zinc plays many essential roles in life.As a strong Lewis acid that lacks redox activity under environ-mental and cellular conditions,the Zn2+cation is central in determining protein structure and catalytic function of nearly 10%of most eukaryotic proteomes.While specific functions of zinc have been elucidated at a molecular level in a number of plant proteins,wider issues abound with respect to the acquisition and distribution of zinc by plants.An important challenge is to understand how plants balance between Zn supply in soil and their own nutritional requirement for zinc,particularly where edaphic factors lead to a lack of bioavailable zinc or,conversely,an excess of zinc that bears a major risk of phyto-toxicity.Plants are the ultimate source of zinc in the human diet,and human Zn deficiency accounts for over 400000 deaths annually.Here,we review the current understanding of zinc homeostasis in plants from the molecular and physiological perspectives.We provide an overview of approaches pursued so far in Zn biofortification of crops.Finally,we outline a"push-pull"model of zinc nutrition in plants as a simplifying concept.In summary,this review discusses avenues that can potentially deliver wider bene-fits for both plant and human Zn nutrition.

关键词： zinc biofortification Zn homeostasis cereals Arabidopsis barley wheat rice

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：