Human-driven changes in sediment-water interactions may increase the degradation of ecosystem functioning in the Ganga River
作者： Jitendra Pandey , Deepa Jaiswal
DOI: 10.1016/J.JHYDROL.2021.126261
关键词: Tributary 、 Biogeochemical cycle 、 Ecosystem 、 Hydrology 、 Sediment 、 Main stem 、 Hypoxia (environmental) 、 Degradation (geology) 、 Benthic zone 、 Environmental science
摘要: Abstract While it is widely accepted that the magnitude of river water quality degradation depends upon proportion human interventions, overall changes are ultimately consequence interconnected biogeochemical processes with poorly understood role ecosystem feedbacks. Here, we conducted in situ and incubation experiments, considering a 620 km Ganga River main stem, two tributaries point source downstream locations for trajectory studies to analyze human-driven feedback associated functioning its tributaries. The stem coupled analyses show benthic hypoxia/anoxia resulting from intensive releases generates positive feedbacks (sediment-P –metal release) exacerbate We found 1.9 4.6 times higher rates sediment-P release about 1.1 3.7 rate sediment-metal at sites DOsw
sci-hub.st 参考文章(59)
GRAHAM P. HARRIS, A. LOUISE HEATHWAITE, Why is achieving good ecological outcomes in rivers so difficult Freshwater Biology. ,vol. 57, pp. 91- 107 ,(2012) , 10.1111/J.1365-2427.2011.02640.X
ANE LØVENDAHL RAUN, JENS BORUM, KAJ SAND-JENSEN, Influence of sediment organic enrichment and water alkalinity on growth of aquatic isoetid and elodeid plants Freshwater Biology. ,vol. 55, pp. 1891- 1904 ,(2010) , 10.1111/J.1365-2427.2010.02423.X
Johan Schnürer, Thomas Rosswall, Fluorescein Diacetate Hydrolysis as a Measure of Total Microbial Activity in Soil and Litter Applied and Environmental Microbiology. ,vol. 43, pp. 1256- 1261 ,(1982) , 10.1128/AEM.43.6.1256-1261.1982
JS Stark, MJ Riddle, SDA Smith, Influence of an Antarctic waste dump on recruitment to nearshore marine soft-sediment assemblages Marine Ecology Progress Series. ,vol. 276, pp. 53- 70 ,(2004) , 10.3354/MEPS276053
Lars Hakanson, An ecological risk index for aquatic pollution control.a sedimentological approach Water Research. ,vol. 14, pp. 975- 1001 ,(1980) , 10.1016/0043-1354(80)90143-8
Jitendra Pandey, Usha Pandey, Anand V. Singh, Impact of changing atmospheric deposition chemistry on carbon and nutrient loading to Ganga River: integrating land–atmosphere–water components to uncover cross-domain carbon linkages Biogeochemistry. ,vol. 119, pp. 179- 198 ,(2014) , 10.1007/S10533-014-9957-2
J. J. Elser, T. Andersen, J. S. Baron, A.-K. Bergstrom, M. Jansson, M. Kyle, K. R. Nydick, L. Steger, D. O. Hessen, Shifts in Lake N:P Stoichiometry and Nutrient Limitation Driven by Atmospheric Nitrogen Deposition Science. ,vol. 326, pp. 835- 837 ,(2009) , 10.1126/SCIENCE.1176199
D. W. Schindler, R. E. Hecky, D. L. Findlay, M. P. Stainton, B. R. Parker, M. J. Paterson, K. G. Beaty, M. Lyng, S. E. M. Kasian, Eutrophication of lakes cannot be controlled by reducing nitrogen input: Results of a 37-year whole-ecosystem experiment Proceedings of the National Academy of Sciences of the United States of America. ,vol. 105, pp. 11254- 11258 ,(2008) , 10.1073/PNAS.0805108105
K. Slavik, B. J. Peterson, L. A. Deegan, W. B. Bowden, A. E. Hershey, J. E. Hobbie, Long‐term responses of the kuparuk river ecosystem to phosphorus fertilization Ecology. ,vol. 85, pp. 939- 954 ,(2004) , 10.1890/02-4039
Jacqueline Eggleton, Kevin V Thomas, A review of factors affecting the release and bioavailability of contaminants during sediment disturbance events. Environment International. ,vol. 30, pp. 973- 980 ,(2004) , 10.1016/J.ENVINT.2004.03.001