نتایج جستجو برای: phenological stage

تعداد نتایج: 358156  

2009
Louie H. Yang V. H. W. Rudolf

Louie H. Yang and V. H. W. Rudolf* Department of Entomology, UC Davis, CA 95616, USA Department of Ecology & Evolutionary Biology, Rice University, Houston, TX 77098, USA *Correspondence: E-mail: [email protected] These authors contributed equally to this work. Abstract Climate change is altering the phenology of many species and the timing of their interactions with other species, but the...

Journal: :Annals of agricultural and environmental medicine : AAEM 2009
Maria Fernandez-Gonzalez Javier Rodriguez-Rajo Victoria Jato Jesus Aira

Knowledge about the fungal spores most abundant in the atmosphere of a vineyard is of great use since it allows development of prediction models of the spore concentration, and therefore application of phytosanitary treatments only when high levels of fungal propaguls are detected. In this study the concentration of phytopathogenic spores is related with the different phenological stages of the...

Journal: :Revista de biologia tropical 2012
W Alice Boyle Judith L Bronstein

Reproductive phenologies of plants are constrained by climate in highly seasonal regions. In contrast, plants growing in wet tropical forests are freed from many abiotic constraints, which in canopy tree communities lead to a rich diversity of phenological patterns within and among individuals, species and communities. However, basic descriptions of tropical phenological patterns and the proces...

Journal: :Remote Sensing 2014
Qian Wang Lifu Zhang Taixia Wu Yi Cen Changping Huang Qingxi Tong

Phenological shifts in events such as flowering and bud break are important indicators of ecosystem processes, and are therefore of particular significance for carbon (C) cycle research. Using long-term flux data from three contrasting plant functional type (evergreen and deciduous) boreal forest sites, we evaluated and compared the responses of annual C fluxes to multiple spring phenological i...

Journal: :International journal of biometeorology 2014
Lynda E Chambers Peter Dann Belinda Cannell Eric J Woehler

Seabirds are one of the most threatened groups of birds globally and, overall, their conservation status is deteriorating rapidly. Southern hemisphere countries are over-represented in the number of species of conservation concern yet long-term phenological data on seabirds in the southern hemisphere is limited. A better understanding of the implications of changes in the marine and terrestrial...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2010
Inés Ibáñez Richard B Primack Abraham J Miller-Rushing Elizabeth Ellwood Hiroyoshi Higuchi Sang Don Lee Hiromi Kobori John A Silander

As a consequence of warming temperatures around the world, spring and autumn phenologies have been shifting, with corresponding changes in the length of the growing season. Our understanding of the spatial and interspecific variation of these changes, however, is limited. Not all species are responding similarly, and there is significant spatial variation in responses even within species. This ...

Journal: :Proceedings. Biological sciences 2015
Nadiah Pardede Kristensen Jacob Johansson Jörgen Ripa Niclas Jonzén

In migratory birds, arrival date and hatching date are two key phenological markers that have responded to global warming. A body of knowledge exists relating these traits to evolutionary pressures. In this study, we formalize this knowledge into general mathematical assumptions, and use them in an ecoevolutionary model. In contrast to previous models, this study novelty accounts for both trait...

Journal: :Remote Sensing 2016
Fanjie Kong Xiaobing Li Hong Wang Dengfeng Xie Xiang Li Yunxiao Bai

Accurate regional and global information on land cover and its changes over time is crucial for environmental monitoring, land management, and planning. In this study, we selected Fengning County, in China’s Hebei Province, as a case study area. Using satellite data, we generated fused normalized-difference vegetation index (NDVI) data with high spatial and temporal resolution by utilizing the ...

An experiment was carried out to investigate the effect of progressing water deficit stress on leaf water relation parameters and compatible solutes at different phenological stages. Completely randomized design including four phenological stages (as drought stress treatments) was used. Each treatment had five replicates. Variables measured were osmotic potential (&PsiS), relative water content...

2013
Kellen M Calinger Simon Queenborough Peter S Curtis

Shifting flowering phenology with rising temperatures is occurring worldwide, but the rarity of co-occurring long-term observational and temperature records has hindered the evaluation of phenological responsiveness in many species and across large spatial scales. We used herbarium specimens combined with historic temperature data to examine the impact of climate change on flowering trends in 1...

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