A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Kameswara Rao, K.
- The Assessment of Sediment Ages Determination of Bhavanapadu Mangrove Ecosystem, North Coastal Andhra Pradesh, East Coast of India
Authors
1 National Environmental Engineering Research Institute, Nagpur (440020), IN
2 Department of Environmental Sciences, Andhra University, Visakhapatnam (530003), IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 7 (2011), Pagination: 1137-1140Abstract
The present paper aimed to study the Two 20 cm sediment cores were collected with a D-section corer in the Bhavanapadu(BP) , Meghavaram (MV) mangrove forest and analyzed for 210Pbex (excess 210Pb) in order to understand the sedimentation pattern. The activities of 210Pb along with the 208Po tracer were measured by Alpha Spectrometry on a silicon surface barrier detector connected to a multi channel analyzer. Sedimentation rates were determined applying 210Pb dating method and found to vary between 0.94-1.11 cm year-1. The highest accumulation rates were recorded near the river mouth and the lowest rates at the downstream. Assuming that the sedimentation rate values are accurate, this implies that the sediments in the upper 100 cm at Bhavanapadu (BP), Meghavaram (MV) mangrove forest were deposited during the past several years ago.
Keywords
East Coast, India, Mangrove Forest, Sedimentation Rate, Sediment Age, 210Pb, Pollution, Halophytes, Environmental Conservation, Coastal Area.
- Environmental Impact Assessment of Sediment Quality Analysis of Bhavanapadu Mangrove Ecosystem, East Coast of India
Authors
1 National Environmental Engineering Research Institute (NEERI) CSIR, Nehru, Marg, Nagpur - 440 020, IN
2 Department of Environmental Sciences, Andhra University, Visakhapatnam – 530003, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 7 (2011), Pagination: 1067-1072Abstract
The present study was carried out the tidal effects in the sediment of Bhavanapadu mangrove forest, East Coast of India. On the whole, parameters showed high value at high tide compared to low tide. Factor-cluster analysis was adopted to allow the identification of controlling factors at high and low tides. Factor analysis extracted six controlling factors at high tide and seven controlling factors at low tide. Cluster analysis extracted two (Stations) district clusters at high and low tides. The study showed that factor-cluster analysis application is a useful tool to single out the controlling factors at high and low tides. This will provide a basis for describing the tidal effects in the mangrove sediment. The salinity and electrical conductivity clusters as well as component loadings at high and low tide explained the tidal process where there is high contribution of seawater to mangrove sediments that controls the sediment chemistry. The geoaccumulation index (Igeo) values suggest the mangrove sediments are having background concentrations for Al, Cu, Fe, and Zn and unpolluted for Pb.