Multidisciplinary approach to assess the water self-depuration characteristics of Suquía River (Córdoba, Argentina)

doi:10.1186/S40693-014-0012-4

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Journal Article•DOI•

A multilevel response approach reveals the Asian clam Corbicula largillierti as a mirror of aquatic pollution

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Paola Beatriz Reyna¹, Paola Beatriz Reyna², Maria Laura Ballesteros¹, Maria Laura Ballesteros², M.L. Albá¹, Lidwina Bertrand¹, Lidwina Bertrand², María Jesús González González³, Karina S.B. Miglioranza³, Marcos Tatián¹, Marcos Tatián², Andrea Cecilia Hued¹, Andrea Cecilia Hued² - Show less +9 more•Institutions (3)

National University of Cordoba¹, National Scientific and Technical Research Council², Spanish National Research Council³

15 Jul 2019-Science of The Total Environment

TL;DR: The results showed the presence of contaminants along the studied river and the ability of C. largillierti to bioaccumulate them, and suggest this species as an useful bioindicator of aquatic pollution.

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15 citations

Journal Article•DOI•

Chemical and spectroscopic characterization of humic substances from sediment and riparian soil of a highly polluted urban river (Suquía River, Córdoba, Argentina)

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Carolina Merlo¹, Carolina Merlo², Carolina Vázquez², Ana G. Iriarte², Carlos M. Romero³, Carlos M. Romero⁴ - Show less +2 more•Institutions (4)

National Scientific and Technical Research Council¹, National University of Cordoba², University of Lethbridge³, Agriculture and Agri-Food Canada⁴

01 Jun 2020-International Journal of Sediment Research

TL;DR: In this paper, organic matter dynamics and humic substances (HS) spectrochemical properties along the lower-middle basin of the Suquia River were investigated. But the results were limited to a small portion of the river basin.

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14 citations

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Planted Riparian Buffer Zones in New Zealand: Do They Live Up to Expectations?

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Stephanie M. Parkyn¹, Robert J. Davies-Colley¹, N. Jane Halliday¹, Kerry J. Costley¹, Glenys F. Croker¹ - Show less +1 more•Institutions (1)

National Institute of Water and Atmospheric Research¹

01 Dec 2003-Restoration Ecology

TL;DR: In this article, the authors assessed nine buffer zone schemes in North Island, New Zealand that had been fenced and planted (age range from 2 to 24 years) and compared them with unbuffered control reaches upstream or nearby.

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Abstract: River and stream rehabilitation projects are increasing in number, but the success or failure of these projects has rarely been evaluated, and the extent to which buffers can restore riparian and stream function and species composition is not well understood. In New Zealand the widespread conversion of forest to agricultural land has caused degradation of streams and riparian ecosystems. We assessed nine riparian buffer zone schemes in North Island, New Zealand that had been fenced and planted (age range from 2 to 24 years) and compared them with unbuffered control reaches upstream or nearby. Macroinvertebrate community composition was our prime indicator of water and habitat quality and ecological functioning, but we also assessed a range of physical and water quality variables within the stream and in the riparian zone. Generally, streams within buffer zones showed rapid improvements in visual water clarity and channel stability, but nutrient and fecal contamination responses were variable. Significant changes in macroinvertebrate communities toward “clean water” or native forest communities did not occur at most of the study sites. Improvement in invertebrate communities appeared to be most strongly linked to decreases in water temperature, suggesting that restoration of in-stream communities would only be achieved after canopy closure, with long buffer lengths, and protection of headwater tributaries. Expectations of riparian restoration efforts should be tempered by (1) time scales and (2) spatial arrangement of planted reaches, either within a catchment or with consideration of their proximity to source areas of recolonists.

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207 citations

"Multidisciplinary approach to asses..." refers background in this paper

...The aim of ecological restoration programs is to improve water quality, enhance in-stream habitat, and manage the riparian zone (Parkyn et al. 2003; Kang and Lin 2009; Gift et al. 2010)....
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...The key aspect of the river dynamics regarding the success of restoration programs is the degree of water selfdepuration, which allows the establishment of the magnitude of treatment effects in time and distance (Dzyuban 2003; Parkyn et al. 2003)....
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...It is well known that toph soils do not allow the vegetation to grow and the highest water speed prevents OM deposition, eliminating the possibility of nutrients uptake and retention of xenobiotics (Parkyn et al. 2003; McIntyre et al. 2009; Sahu and Gu 2009)....
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...However, many river restoration programs fail to achieve their objectives partly because of a poor understanding of river system dynamics (Parkyn et al. 2003)....
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Journal Article•DOI•

Natural paradigms of plant cell wall degradation.

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Hui Wei¹, Qi Xu¹, Larry E. Taylor¹, John O. Baker¹, Melvin P. Tucker¹, Shi You Ding¹ - Show less +2 more•Institutions (1)

National Renewable Energy Laboratory¹

01 Jun 2009-Current Opinion in Biotechnology

TL;DR: The primitive 'multicellularity' exhibited by certain cellulolytic microorganisms may play a role in facilitating cell-cell communication and cell-plant cell wall-substrate interaction.

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144 citations

"Multidisciplinary approach to asses..." refers background in this paper

...It was informed that cellulose global degradation occurs in aerobic conditions in 90% and in anaerobic conditions in 10% (Wei et al. 2009; Ransom-Jones et al. 2012)....
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Basic methods for counting microorganisms in soil and water

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H.-J. Lorch

01 Jan 1995

131 citations

"Multidisciplinary approach to asses..." refers background or methods in this paper

...…of microbial metabolic groups were measured: (a) sulfate reducers, nitrate reducers, ammonifiers, and cellulolytics in specific liquid media by the most probable number technique and (b) total aerobic heterotrophs and fermenters in solid culture media by agar plate methods (Lorch et al. 1995)....
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...The presence of cellulolytics was detected by the alteration of cellulose strips as the consequence of cellulose degradation (Lorch et al. 1995)....
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...The gas formation is due to the reduction of nitrate to N oxides and N2 (Lorch et al. 1995)....
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...Then, ammonifiers’ presence was detected by the formation of orange color with the aggregates of Nessler’s reaction due to the presence of ammonia produced (Lorch et al. 1995)....
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...After 2 days of incubation, the number of colony-forming units was counted (Lorch et al. 1995)....
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Journal Article•DOI•

Responses of benthic bacteria to experimental drying in sediments from Mediterranean temporary rivers.

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Stefano Amalfitano¹, Stefano Fazi¹, Annamaria Zoppini¹, Anna Barra Caracciolo¹, Paola Grenni¹, Alberto Puddu¹ - Show less +2 more•Institutions (1)

IRSA¹

01 Feb 2008-Microbial Ecology

TL;DR: The results suggest that the occurrence of drought events could affect carbon cycling through the freshwater microbial compartment, by temporarily limiting microbial mineralization and altering bacterial community structure.

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Abstract: In the semiarid Mediterranean regions, water scarcity represents a common physiological stress for microbial communities residing in river sediments. However, the effect of drying has not yet adequately been evaluated when analyzing riverine microbiological processes. The bacterial community structure (abundance, biomass, composition) and functioning (carbon production, live cell percentage) were assessed during experimental desiccation in microcosms with sediments from different Mediterranean temporary rivers (Tagliamento, Krathis, Mulargia, Pardiela). Our results showed that the overall responses to drying of the bacterial community were independent from sediment origin and strictly related to water content. During desiccation, a prompt decline (up to 100%) of the initial bacterial carbon production was followed by a slower decrease in abundance and biomass, with an overall reduction of 74% and 78%, respectively. By the end of the experiment, live cells were still abundant but depressed in their main metabolic functions, thus resulting in a drastic increase in the community turnover time. Only 14% of the initial live cell biomass was available in dry sediments to immediately start the reactivation of the aquatic microbial food web after the arrival of new water. Community composition analysis showed a relative increase in alpha- and beta-Proteobacteria, when passing from wet to dry conditions. Our results suggest that the occurrence of drought events could affect carbon cycling through the freshwater microbial compartment, by temporarily limiting microbial mineralization and altering bacterial community structure.

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123 citations

"Multidisciplinary approach to asses..." refers background in this paper

...The dynamics of microbial metabolic groups at RS agree with numerous studies which indicate that part of the degradation is carried out quickly in the water by aerobic microorganisms and the other in soil and sediment with a predominance of anaerobic bacteria (Wetzel 2001; Dzyuban 2003; Dzyuban 2005; Amalfitano et al. 2008)....
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...…groups at RS agree with numerous studies which indicate that part of the degradation is carried out quickly in the water by aerobic microorganisms and the other in soil and sediment with a predominance of anaerobic bacteria (Wetzel 2001; Dzyuban 2003; Dzyuban 2005; Amalfitano et al. 2008)....
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Journal Article•DOI•

Cultivation-based and molecular approaches to characterisation of terrestrial and aquatic nitrifiers.

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James I. Prosser¹, T. Martin Embley²•Institutions (2)

University of Aberdeen¹, Natural History Museum²

01 Aug 2002-Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology

TL;DR: There is increasing evidence for physiological properties driving the environmental distribution of particular groups of ammonia oxidisers and for associations between nitrification process rates and ammonia oxidiser community structure.

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Abstract: Increased awareness of the metabolic diversity within autotrophic nitrifying bacteria has led to a re-evaluation of their role in the cycling of nitrogen in terrestrial and aquatic ecosystems. This has been accompanied by improvements in our ability to characterise natural populations of autotrophic ammonia oxidising bacteria through the application of molecular techniques. Molecular approaches indicate considerable diversity within natural populations and the association of different groups of ammonia oxidisers with different environments and changes in populations in response to environmental factors. To some extent, results from molecular approaches are consistent with those adopting laboratory enrichment and isolation strategies. Physiological studies on the latter demonstrate links between phylogenetic groups and possession of characteristics of relevance to ecological studies. Understanding of the significance of ammonia oxidiser species and functional diversity for global cycling of nitrogen require greater links between molecular analyses, physiological studies and measurements of nitrogen cycling processes. However, there is increasing evidence for physiological properties driving the environmental distribution of particular groups of ammonia oxidisers and for associations between nitrification process rates and ammonia oxidiser community structure.

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114 citations

"Multidisciplinary approach to asses..." refers background in this paper

...The effect of soil and sediments’ heterogeneity on microbial community has been reported by numerous authors (Prosser and Embley 2002; Koschorreck and Darwich 2003; Leloup et al. 2005)....
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Multidisciplinary approach to assess the water self-depuration characteristics of Suquía River (Córdoba, Argentina)

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"Multidisciplinary approach to asses..." refers background in this paper

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"Multidisciplinary approach to asses..." refers background in this paper

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