Urban river recovery: a systematic review on the effectiveness of water clean-up programs

Silva, Caroline Ferreira da; Pereira, Elisabete Alves; Carvalho, Mayara de Almeida Ribeiro; Botero, Wander Gustavo; de Oliveira, Luciana Camargo

doi:10.1007/s11356-024-33055-w

Cited by 2 publications

(1 citation statement)

References 112 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is of major ecological importance, as rivers are increasingly threatened by anthropogenic activities (Reid et al, 2019) and global climate (Woodward et al, 2010). While quite some research has been performed in recent years to better understand the effects of multiple stressors on rivers (Dudgeon et al, 2006; Reid et al, 2019) and how rivers recover when stressors are released (Silva et al, 2024; Verdonschot et al, 2012), very little is known about the effects of multiple stressor increase and release on the structure and functioning of prokaryotic microbial communities in rivers (Romero et al, 2020; Shade et al, 2012), and in aquatic systems in general (Balian et al, 2007; Pedros-Alio, 2006; Zinger et al, 2012). In this study, we therefore aimed to elucidate the extent of microbial self-recycling for the functioning of microbial communities in rivers, and how microbial self-recycling differs in phases of river degradation and recovery.…”

Section: Introductionmentioning

confidence: 99%

Effects of temperature and salinity on microbial degradation of bacterial necromass in urban river sediments in outdoor mesocosm experiments

Hadžiomerović,

Baikova,

Madge Pimentel

et al. 2024

Preprint

View full text Add to dashboard Cite

Microorganisms play a key role in the functioning of healthy river ecosystems because they consume carbon and nutrients from dead biomass derived from algae and other higher organisms, or “necromass”, to feed it back into the food web. This so-called microbial loop is known to be substantial in aquatic systems, but it is so far unknown to which extent microorganisms perform self-recycling, i.e. recycling of necromass derived from microorganisms, and how this process is affected by multiple stressors such as increased temperature and salinity. In this study, we investigated microbial self-recycling in the sediment of the urban river Boye within a food-web context before, during, and after a period of increased temperature and salinity using the outdoor flow-through mesocosm system “ExStream”. Rates of self-recycling were measured in additional microcosms with sediment and water from ExStream as an increase in13CO2-concentration over time resulting from the microbial degradation of13C-labelled microbial necromass, which was offered either in the form of intact but deadEscherichia colicells, or lysedE. colicells. The results showed that microbial self-recycling was highest in the first days of incubation suggesting that microbial necromass is an easily biodegradable carbon source. Increased salinity had no effect, but increased temperature or temperature and salinity strongly increased the rate of whole cell-necromass recycling compared to the unstressed control, while it had no effect on lysed cell-necromass recycling. After stressor removal, rates of self-recycling were not distinguishable from the unstressed control, showing the resilience of this community function. The compositions of the necromass-degrading communities were highly similar and little affected by stressor increase or release but changed during the course of the experiment. This indicated that both necromass types stimulated growth of the same organisms and that stressor levels were rather low for microorganisms and dominated by the effects of the seasonal variation in the Boye. The study suggests that microbial communities in urban rivers exposed to moderate levels of multiple anthropogenic stressors will be rather stressor-resistant and show fast recovery of community functioning.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of temperature and salinity on microbial degradation of bacterial necromass in urban river sediments in outdoor mesocosm experiments

Hadžiomerović,

Baikova,

Madge Pimentel

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

An overview on persistent organic pollutants levels in the White Drin River, Kosovo

Camaj Isa,

Haziri,

Nuro

et al. 2024

Scientific Horizons

View full text Add to dashboard Cite

The purpose of this study was to assess the concentrations of persistent organic pollutants in the White Drin River, Kosovo region. The study focused on organochlorine pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, and benzene, toluene, ethylbenzene, and xylenes. The White Drin River originates from Peja, Kosovo, and extends to the Albanian border near Kukesi, making it a significant water body. It is potentially affected by anthropogenic pollution due to its passage through Kosovo’s urban areas, villages, farms, and industries. Sampling was conducted at 15 stations along the river, from the river waterfall to the Albanian border, during two distinct periods in 2023 (January – February and August – September). Organochlorine pollutants were concurrently extracted using liquid-liquid extraction followed by analysis using capillary gas chromatography equipped with an electron capture detector. Polycyclic aromatic hydrocarbons were isolated through a two-step liquid-liquid extraction, with dichloromethane and hexane. Benzene, toluene, ethylbenzene, and xylenes were isolated using headspace solid – phase microextraction assisted by polydimethylsiloxane fibre. Qualitative and quantitative analyses of polycyclic aromatic hydrocarbons, and benzene, toluene, ethylbenzene, and xylenes, were conducted via gas chromatography with a flame ionization detector. The analyses showed the presence of persistent organic pollutants in the river water samples during both sampling periods. Elevated concentrations of volatile polychlorinated biphenyls, benzene, toluene, ethylbenzene, and xylenes, and polycyclic aromatic hydrocarbons, were observed in the water samples during both periods. This study underscores the significance of investigating organic pollutants in Kosovo’s water systems, considering both local geographic concerns and the broader global issue of environmental pollution

show abstract

Urban river recovery: a systematic review on the effectiveness of water clean-up programs

Cited by 2 publications

References 112 publications

Effects of temperature and salinity on microbial degradation of bacterial necromass in urban river sediments in outdoor mesocosm experiments

Effects of temperature and salinity on microbial degradation of bacterial necromass in urban river sediments in outdoor mesocosm experiments

An overview on persistent organic pollutants levels in the White Drin River, Kosovo

Contact Info

Product

Resources

About