نتایج جستجو برای: phenological stages

تعداد نتایج: 187784  

2017
Mauricio D. Tejera Emily A. Heaton

Triploid Miscanthus × giganteus (Greef et Deu. ex Hodkinson et Renvoize) is a sterile, perennial grass used for biomass production in temperate environments. While M. × giganteus has been intensively researched, a scale standardizing description of M. × giganteus morphological stages has not been developed. Here we provide such a scale by adapting the widely-used Biologische Bundesanstalt, Bund...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2011
Hassen Teyeb Sami Zouari Wahiba Douki Mohamed Fadhel Najjar Mohamed Neffati

The essential oils obtained by hydrodistillation (Clevenger apparatus) from aerial parts of Astragalus gombiformis were analysed by gas chromatography coupled with mass spectrometry (GC/MS). This study showed that the A. gombiformis essential oils are complex mixtures of important natural compounds, which varied qualitatively and quantitatively between cultivated and wild plants and between phe...

2013
Nicole E Rafferty Paul J CaraDonna Laura A Burkle Amy M Iler Judith L Bronstein

Concern regarding the biological effects of climate change has led to a recent surge in research to understand the consequences of phenological change for species interactions. This rapidly expanding research program is centered on three lines of inquiry: (1) how the phenological overlap of interacting species is changing, (2) why the phenological overlap of interacting species is changing, and...

2009
Nicholas S. Fabina Karen C. Abbott R.Tucker Gilman

For many species in seasonal environments, warmer springs associated with anthropogenic climate change are causing phenological changes. Within ecological communities, the timing of interactions among species may be altered if the species experience asymmetrical phenological shifts. We present a model that examines the consequences of changes in the relative timing of herbivory and pollination ...

Journal: :Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 2014

Journal: :Remote Sensing 2013
Cornelius Senf Dirk Pflugmacher Sebastian van der Linden Patrick Hostert

We developed and evaluated a new approach for mapping rubber plantations and natural forests in one of Southeast Asia’s biodiversity hot spots, Xishuangbanna in China. We used a one-year annual time series of Moderate Resolution Imaging Spectroradiometer (MODIS), Enhanced Vegetation Index (EVI) and short-wave infrared (SWIR) reflectance data to develop phenological metrics. These phenological m...

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