Role of declining discharge and water pollution on habitat suitability of fish community in the Mathabhanga-Churni River, India

Short‐term hydromorphological and ecological responses of using woody structures for river restoration in a tailing‐impacted tropical river

“…Aquatic ecosystems have been widely impacted by anthropogenic activities such as industrialization, agriculture, waste discharge, dam construction, and mining activities (Akamagwuna et al, 2022; Passos, et al, 2020; Sarkar et al, 2021). In November 2015 the rupture of the Fundão Dam, located in Minas Gerais State (MG), in southeastern Brazil, launched 43.7 million m 3 of iron mining waste into the Santarém River, flowing along its length until it reached the Gualaxo do Norte River (GNR) and, later, the Doce River, which has a total length of 660 km.…”

Exploring the past to discern the present: The role of historico‐geographical study in differentiating natural river channels from artificial canals

“…A narrow bypass channel of the Padma River in Bangladesh lies to the east of the border fence of the Char‐Mahishkundi. The river Mathabhanga is taking off from that narrow bypass channel ($${24}^{^\circ }03^{\prime} 43^{\prime\prime} {\rm{N}}\,{\text{and}88}^{^\circ }44^{\prime} 21^{\prime\prime} {\rm{E}}$$) (Sarkar et al, 2021). It is beheaded because its source of flow from the feeder channel of river Padma has been blocked by a large sand bar except for 1 or 2 months during monsoon.…”

“…The pollution of the Mathabhanga‐Churni River has evolved into an international concern involving Bangladesh and India. The pivotal factor contributing to water quality degradation is the presence of Carew and Company, a sugar and chemical industry based in Bangladesh (Sarkar & Islam, 2020; Sarkar et al, 2021). The study of Mitra and Bandyopadhyay (2006) signifies the initial recorded instance of ectoparasitic African Trichodinids (a type of microscopic organism belonging to the group Ciliophora, specifically Peritrichida) in a cichlid fish species in the river.…”

Long-term variations in water discharge and sediment load of the Pearl River Estuary: Implications for sustainable development of the Greater Bay Area

“…The method of increasing the freshwater flow in the dry season not only ensures freshwater supply, but is also of great significance for coastal environments. For example, freshwater from rivers plays a critical role in the regulation of phytoplankton biomass, primary production, microbial community structure and water quality in the Great Bay Area (Fan et al, 2012;Zhou et al, 2016;Li et al, 2017;Sarkar et al, 2021). However, the effect of reservoir management for saltwater mitigation and freshwater supplement to coastal ecosystems remains relatively poorly understood.…”