Fractionation of Sediment-Bound Nitrogen: Bioavailability and Contamination Status of the Nutrient in Thrissur Kole Wetlands, Southwest India DOI

P. V. Vidya,

S. Rajathy,

Ratheesh Kumar C S

et al.

Soil and Sediment Contamination An International Journal, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 25

Published: Aug. 26, 2024

Fractionation of sediment-bound nitrogen (N) in Thrissur Kole wetland was carried out to assess the mobility, bioavailability, and nutrient contamination status. Various N fractions were extracted using KCl equilibrium extraction method, concentration each fraction analyzed by spectrophotometric method. Dominance ammonia during all seasons due dissimilatory NO3− reduction NH4+ direct inputs from agriculture fields. Enrichment urea post-monsoon (181.78 ± 8.47 ppm) attributed fertilizer sources. NO3−-N deficit at central zone study area (monsoon post-monsoon) anoxia. Comparatively higher values NO2−-N monsoon (0.07 0.02 land run-off, leaching fertilizers fields, rate denitrification. Elevated content total [1819.94 40.20 ppm (pre-monsoon); 3061.62 13.21 (monsoon); 2763.44 9.65 (post-monsoon)] reflected in-situ production, agriculture, terrestrial waste disposal, guano as well carcass birds. Average contribution bioavailable (36.16%) indicated possibility for eutrophication risk pre-monsoon. Agriculture dominated regions recorded severe organic pollution index, phosphorous index.

Language: Английский

Fractionation of Sediment-Bound Nitrogen: Bioavailability and Contamination Status of the Nutrient in Thrissur Kole Wetlands, Southwest India DOI

P. V. Vidya,

S. Rajathy,

Ratheesh Kumar C S

et al.

Soil and Sediment Contamination An International Journal, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 25

Published: Aug. 26, 2024

Fractionation of sediment-bound nitrogen (N) in Thrissur Kole wetland was carried out to assess the mobility, bioavailability, and nutrient contamination status. Various N fractions were extracted using KCl equilibrium extraction method, concentration each fraction analyzed by spectrophotometric method. Dominance ammonia during all seasons due dissimilatory NO3− reduction NH4+ direct inputs from agriculture fields. Enrichment urea post-monsoon (181.78 ± 8.47 ppm) attributed fertilizer sources. NO3−-N deficit at central zone study area (monsoon post-monsoon) anoxia. Comparatively higher values NO2−-N monsoon (0.07 0.02 land run-off, leaching fertilizers fields, rate denitrification. Elevated content total [1819.94 40.20 ppm (pre-monsoon); 3061.62 13.21 (monsoon); 2763.44 9.65 (post-monsoon)] reflected in-situ production, agriculture, terrestrial waste disposal, guano as well carcass birds. Average contribution bioavailable (36.16%) indicated possibility for eutrophication risk pre-monsoon. Agriculture dominated regions recorded severe organic pollution index, phosphorous index.

Language: Английский

Citations

0