Hatha, A A M; Nishamol, S; Varghese, R; Suchitra, R(Journal of Advances in Developmental Research, June , 2012)
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Abstract:
Present study is focused on the spatiotemporal variation of the microbial population (bacteria,
fungus and actinomycetes) in the grassland soils of tropical montane forest and its relation with
important soil physico-chemical characteristics and nutrients. Different physico-chemical properties
of the soil such as temperature, moisture content, organic carbon, available nitrogen, available
phosphorous and available potassium have been studied. Results of the present study revealed that
both microbial load and soil characteristics showed spatiotemporal variation. Microbial population of
the grassland soils were characterized by high load of bacteria followed by fungus and actinomycetes.
Microbial load was high during pre monsoon season, followed by post monsoon and monsoon. The
microbial load varied with important soil physico-chemical properties and nutrients. Organic carbon
content, available nitrogen and available phosphorous were positively correlated with bacterial load
and the correlation is significant at 0.05 and 0.01 levels respectively. Available nitrogen and available
phosphorous were positively correlated with fungus at 0.05 level significance. Moisture content was
negatively correlated with actinomycetes at 0.01 level of significance. Organic carbon negatively correlated
with actinomycetes load at 0.05 level of significance
Prasanth A, Pillai; Dr.Mohan Kumar, K(Cochin University of Science & Technology, October , 2008)
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Abstract:
The present study illustrates the biennial oscillation in different ocean-atmosphere
parameters associated with interannual variability of Indian summer monsoon rainfall.It also accounts the role of different processes like ENSO, IOD, QBO and ISO in the monsoon variability during the TBO years.
Description:
Department of Atmospheric Sciences,
Cochin University of Science and Technology
Rajesh, J; Dr.Mohan Kumar, K(Cochin University of Science and Technology, August 25, 2009)
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Abstract:
The Doctoral thesis focuses on the factors that influence the weather and climate
over Peninsular Indias. The first chapter provides a general introduction about the climatic features over peninsular India, various factors dealt in subsequent chapters, such as solar forcing on climate, SST variability in the northern Indian Ocean and its influence on Indian monsoon, moisture content of the atmosphere and its importance in the climate system, empirical formulation of regression forecast of climate and some aspects of regional climate modeling. Chapter 2 deals with the variability in the vertically integrated moisture (VIM) over Peninsular India on various time scales. The third Chapter discusses the influence of solar activity in the low frequency variability in the rainfall of Peninsular India. The study also investigates the influence of solar activity on the horizontal and vertical components of wind and the difference in the forcing before and after the so-called regime shift in the climate system before and after mid-1970s.In Chapter 4 on Peninsular Indian Rainfall and its association with meteorological and oceanic parameters over adjoining oceanic region, a linear regression model was developed and tested for the seasonal rainfall prediction of Peninsular India.
Description:
Department
of Atmospheric Sciences, Cochin University of Science and Technology