|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 印度Ladakh地区斑头雁的数量、种群结构和栖息地利用(英文)显示文摘于 1998、 2 0 0 0和 2 0 0 2年在印度的Ladakh地区进行了野外考察以研究斑头雁的繁殖行为和种群大小。Ladakh地区的斑头雁集小群在淡水湖泊中的小岛上进行繁殖 ,不在树上和悬崖上繁殖。 5月份开始产卵。群内孵化的同步性较低。盐水湖岸上没有观察到进行繁殖或带有幼雏的斑头雁。作者所调查的Ladakh地区有 35 0 - 10 0 0只斑头雁 ,该物种的数量满足了Ramsar公约的有关规定 。 | Herbert HTPRINS Sipke EvanWIEREN | 2004 | 动物学报2004，50，5： | 2 |
| 2 | Up-regulation of CD81 ( TAPA ) by reactive microglial and astrocytes after spinal cord injury in the rat 显示文摘 | Sipke D Eldon EG Gispen WH | 2000 | J Comparat Neurol2000，428，： | 1 |
| 3 | Overstocking in the trans-himalayan rangelands of India显示文摘 | Charudutt Mishra Herbert H T Prins Sipke E Wieren | 2001 | Environmental Conservation2001，28，3： | 1 |
| 4 | Project and portfolio planning cycle project-based management for the multiproject challenge\显示文摘 | Adri Platje Harald Seidel Sipke Wadman | 1994 | International Journal of Project Management1994，12，2： | 1 |
| 5 | Overstocking in the trans-Himalayan rangelands of India显示文摘 | Charudutt Mishra Herbert H T Prins Sipke E | 2001 | Environmental Conservation2001，28，3： | 1 |
| 6 | Screen-and-treat strategies for albuminuria to prevent cardiovascular and renal disease: Cost-effectiveness of nationwide and targeted interventions based on analysis of cohort data from the Netherlands显示文摘 | Cornelis Boersma Ron T. Gansevoort Petros Pechlivanoglou Sipke T. Visser Flip F.J. van Toly Lolkje T.W. de Jong-van den Berg Paul E. de Jong Maarten J. Postma | 2010 | Clinical Therapeutics2010，，6： | 1 |
| 7 | Estimation of green grass/herb biomass from airborne hyperspectral imagery using spectral indices and partial least squares regression显示文摘 | Moses Azong Cho Andrew Skidmore Fabio Corsi Sipke E. van Wieren Istiak Sobhan | 2007 | International Journal of Applied Earth Observations and Geoinformation2007，，4： | 1 |
| 8 | Distributional congruence of mammalian herbivores in the Trans-Himalayan Mountains显示文摘 | Tsewang NAMGAIL Sipke E. van WIEREN Herbert H.T. PRINS | 2013 | Current Zoology2013，59，1： | 0 |
| 9 | Avian introgression in the genomic era显示文摘Introgression,the incorporation of genetic material from one(sub)species into the gene pool of another by means of hybridization and backcrossing,is a common phenomenon in birds and can provide important insights into the speciation process.In the last decade,the toolkit for studying introgression has expanded together with the development of molecular markers.In this review,we explore how genomic data,the most recent step in this methodological progress,impacts different aspects in the study of avian introgression.First,the detection of hybrids and backcrosses has improved dramatically.The most widely used software package is STRUCTURE.Phylogenetic discordance(i.e.different loci resulting in discordant gene trees) is another means for the detection of introgression,although it should be regarded as a starting point for further analyses,not as a definitive proof of introgression.Specifically,disentangling introgression from other biological processes,such as incomplete lineage sorting,remains a challenging endeavour,although new techniques,such as the D-statistic,are being developed.In addition,phylogenetics might require a shift from trees to networks.Second,the study of hybrid zones by means of geographical or genomic cline analysis has led to important insights into the complex interplay between hybridization and speciation.However,because each hybrid zone study is just a single snapshot of a complex and continuously changing interaction,hybrid zones should be studied across different temporal and/or spatial scales.A third powerful tool is the genome scan.The debate on which evolutionary processes underlie the genomic landscape is still ongoing,as is the question whether loci involved in reproductive isolation cluster together in ‘islands of speciation' or whether they are scattered throughout the genome.Exploring genomic landscapes across the avian tree of life will be an exciting field for further research.Finally,the findings from these different methods should be incorporated into specific speciation scenarios,which can consequently be tested using a modelling approach.All in all,this genomic perspective on avian hybridization and speciation will further our understanding in evolution in general. | Jente Ottenburghs Robert H.S.Kraus Pim van Hooft Sipke E.van Wieren Ronald C.Ydenberg Herbert H.T.Prins | 2017 | Avian Research2017，8，4： | 0 |
| 10 | Existing theories do not explain sex ratio variation at birth in monomorphic roe deer (Capreolus capreolus)显示文摘The phenomenon of skewed sex ratios at birth has been reported in many ungulate species.So far,no consistent trend has emerged for roe deer(Capreolus capreolus),because male-biased,female-biased and equal sex ratios at birth have all been found.Nevertheless,both the Trivers–Willard hypothesis and the theory of local resource competition have gained support.Despite the great number of studies carried out regarding the ecology of roe deer,too many aspects remain unclear,and contradictory results have been produced with respect to several crucial elements.Without further research,the discussion on which theory applies will therefore remain inconclusive.We put forward the argument that eventually the theories of Trivers–Willard and local resource competition can be considered as being not essentially different.After all,both theories explain the observed skewed sex ratios as being due to the effect of the progeny s sex on the mother s body condition and hence her reproductive success in subsequent years.Furthermore,neither theory is likely to prove to be suitable for roe deer,as several assumptions are unlikely to be met.In roe deer,skewed ratios probably only have a temporal character.As a matter of fact,several observations of skewed sex ratios in birds and mammals did not withstand the accumulation of further data,as sex ratios that were initially believed to be biased turned out to be equal in the long term.This is likely to be the case in roe deer as well.We hypothesize that roe deer,as r-strategists,will produce as many offspring as possible,regardless of sex. | Stefan Jacob VREUGDENHIL Leo VAN BREUKELEN Sipke Egbert VAN WIEREN | 2007 | Integrative Zoology2007，2，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员