نتایج جستجو برای: climatic stem

تعداد نتایج: 308452  

2011
Amalia E. Barrios Paul A. Frederickson

Recently there has been increased interest within the U.S. Navy in the use of climatology-based products to support the planning and execution of military operations. Climatological databases of atmospheric features that impact electromagnetic (EM) propagation have been developed to provide guidance on weapons and sensor system performance for expected environmental conditions. However, the mar...

2000
Peter Minchin Alla Seleznyova Stephen Haslett Richard Campbell Kathy Murray Liz Halligan Cara Norling Georgie Milne Ken Gardiner Tessa Mills Dennis Greer

The 30 th anniversary of NCL, the New Zealand controlled environment laboratory, was marked on 20 March 2000. This anniversary opens the fourth decade of service by NCL to researchers in New Zealand and internationally. Looking forward into this decade provides the stimulus for this workshop series, focused on current issues in controlled environment (CE) science. The workshop series is designe...

2015
Daniel J. Short Gianotti Bruce T. Anderson Guido D. Salvucci

Weather and climate prediction rely on inherently different predictors at different time scales. Some of the variability in precipitation on climate time-scales (i.e., interannual) could be attributed to accumulated noise on weather (i.e., daily) time-scales. To determine a lower bound on how much climate variability is due to processes at climate time-scales, weather generator models with no m...

Journal: :Proceedings. Biological sciences 2014
Tatsuya Amano Robert P Freckleton Simon A Queenborough Simon W Doxford Richard J Smithers Tim H Sparks William J Sutherland

To generate realistic projections of species' responses to climate change, we need to understand the factors that limit their ability to respond. Although climatic niche conservatism, the maintenance of a species's climatic niche over time, is a critical assumption in niche-based species distribution models, little is known about how universal it is and how it operates. In particular, few studi...

Journal: :PLoS ONE 2009
Richard D. Gregory Stephen G. Willis Frédéric Jiguet Petr Voříšek Alena Klvaňová Arco van Strien Brian Huntley Yvonne C. Collingham Denis Couvet Rhys E. Green

Rapid climatic change poses a threat to global biodiversity. There is extensive evidence that recent climatic change has affected animal and plant populations, but no indicators exist that summarise impacts over many species and large areas. We use data on long-term population trends of European birds to develop such an indicator. We find a significant relationship between interspecific variati...

Journal: :Science 2003
Ramakrishna R Nemani Charles D Keeling Hirofumi Hashimoto William M Jolly Stephen C Piper Compton J Tucker Ranga B Myneni Steven W Running

Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global climatic changes on vegetation productivity has not before been expressed in the context of variable limiting factors to plant growth. We present a global investigation of vegetation responses to climatic changes by analyzing 18 years (1982 t...

2001
J. G. LOCKWOOD

This review paper summarizes recent research work on abrupt climatic changes and oscillations. The climatic system is viewed as a dissipative, highly non-linear system, under non-equilibrium conditions, and, as such, should be expected to have some unusual properties. These unusual properties include bifurcation points with marked instability just before the point, magnification of semi-periodi...

Journal: :Ecology letters 2010
Kenneth H Kozak John J Wiens

A major goal of ecology is to explain differences in species richness between regions and among clades. The diversification rate of clades is a key parameter for understanding both patterns. Here, we combine phylogenetic and climatic data for 250 species of plethodontid salamanders and show for the first time that rapid species diversification is associated with accelerated climatic-niche evolu...

Journal: :Botanical Journal of the Linnean Society 2022

Abstract The prolonged interplay between orographic and climatic changes creates biogeographic barriers, resulting in the allopatric differentiation of plants Himalaya–Hengduan Mountains. Such consequences have led us to investigate long-term Neogene–Quaternary geo-climatic history Eastern Narrowly distributed populations Koenigia forrestii were sampled (ten populations, 97 individuals) analyse...

Journal: :Biology letters 2012
Stephan Koblmüller Robert K Wayne Jennifer A Leonard

Recurrent cycles of climatic change during the Quaternary period have dramatically affected the population genetic structure of many species. We reconstruct the recent demographic history of the coyote (Canis latrans) through the use of Bayesian techniques to examine the effects of Late Quaternary climatic perturbations on the genetic structure of a highly mobile generalist species. Our analysi...

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