Browsing by Author "Roy, Sajal"

Now showing 1 - 4 of 4

Arsenic contamination in the food chain and its possible mitigation approaches
(J. Asiatic Soc. Bangladesh, 2011-12) Huq, S. M. Imamul; Roy, Sajal
Effects of arsenic on the nutrient uptake pattern of amaranthus
(Dhaka Univ. J. Biol. Sci., 2012-01) Roy, Sajal; Parvin, Zakia; Huq, S. M. Imamul
A macrocosm study was carried out to assess the transfer of arsenic (As) from irrigation water and sludge of arsenic removal water filter to two varieties of Amaranthus and their effects on phosphorus (P), potassium (K), sulfur (S), calcium (Ca) and magnesium (Mg) uptake. P and K uptake in shoot and root were negatively affected by As that were not significant. However, a significant negative relationship was observed between As and S in shoot. A positive and significant relationship existed between As and Ca of green Amaranthus shoot but it was negative and insignificant in case of red Amaranthus. Mg content of shoot and root was positively affected by As in green Amaranthus. On the other hand, in the red Amaranthus the relation between As and Mg was positive in the shoot but negative in the root.
Effects of nitrobenze on grouth of tomato plants and accumulation of arsenic
(Bangladesh Journal of Scientific Research, 2012-06) Deb, Mithila; Roy, Sajal; Huq, S. M. Imamul
Understanding the Socio-Economic Impacts of Climate Change on Riparian Communities in Bangladesh
(Wiley, 22-04-08) Filho, Walter Leal; Wolf, Franziska; Abubakar, Ismaila Rimi; Al-Amin, Abul Quasem; Roy, Sajal; Malakar, Krishna; Alam, G. M. Monirul; Sarker, Muhammad Nazirul Islam
Riparian communities in developing countries such as Bangladesh, whose livelihoods depend especially on fisheries and other subsistence activities, are under considerable pressure due to climate change. Therefore, there is a need to better understand how the dynamics of riparian communities are influenced by climate change and how its impacts can be assessed. Using Bangladesh as an example, this paper describes the various climate stressors affecting riparian communities and their socio-economic impacts, and it outlines some measures needed to increase their resilience to a changing climate. The results show that riparian communities are not only quite vulnerable to the impacts of climate change but also have a rather low level of resilience. This challenge can, at least in part, be attributed to their fragile living conditions, which intensify the socio-economic impacts of extreme events. One lesson from the paper is that handling climate-induced risks in riparian communities requires implementing strategic measures to improve local climate and livelihood resilience, such as effective public health infrastructure and a resilient built environment. Win-win scenarios comprise strategies that offer multiple benefits including better water storage, flood control, and improved riparian habitats.