Development of microconsumers in waterlogged soil: experience in microcosms

Zaplara, Virginia; Solari, Lía Cristina; Benítez, Hernán Hugo; Gabellone, Néstor Adrián

doi:10.22179/revmacn.20.605

Cited by 2 publications

(3 citation statements)

References 32 publications

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“…Nitrates and nitrites increased gradually during the experiment, owing to the endogenous nitri cation processes and the incorporation of water to maintain the water level of the mesocosm. Nevertheless, the previous investigations involving a long ooding period in lentic systems (Quaíni 2011;Solari et al 2018;Zaplara et al 2023) observed that the water nitrate decreased markedly for up to 15 days and remained very low thereafter. This nding was attributable to a consumption by the producing microorganisms, which registered a substantial development until the end of the ooding, and also coincided with the observed decrease in SRP.…”

Section: Nutrients and Chlorophyll "A"mentioning

confidence: 86%

“…Recent investigations (Zaplara et al 2023) have demonstrated that upon ooding a soil under lentic conditions over a short time, mediated by different physical-chemical procedures, the soil releases the adsorbed phosphorus into the water (Zaplara et al 2023) to become a source of nutrients for oxygenproducing organisms and for the upper trophic chains. In lentic systems, when a soil is ooded, the water displaces the air in the pores between the soil particles, thus reducing the availability of oxygen and generating anoxic sites (Rubio et al 1997;Chaneton 2006).…”

Section: Nutrients and Chlorophyll "A"mentioning

confidence: 99%

“…These redox reactions are affected by the physical, chemical, and biologic characteristics of soils; the organic substrates; and the thickness of the water layer (Morales 2004). We therefore analyzed the nutrient dynamics in studies performed in ooded soils under lentic conditions and observed that during the rst days of ooding the phosphorus concentrations in the water increased since phosphorus was released from the soil under anoxic conditions, thus being available for the primary producers (Quaíni 2011;Zaplara 2021;Zaplara et al 2023).…”

Section: Introductionmentioning

confidence: 99%

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Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm

Zaplara,

Solari,

Gabellone

et al. 2024

Aquat Sci

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We analyzed the succession of soil organisms and nutrient dynamics under lotic conditions. We simulated typical runoff and erosion conditions in the laboratory using lotic mesocosms. We then analyzed the effects of soil waterlogging under dissimilar times of ooding on environmental variables, water nutrients, the concentration of chlorophyll "a", and the succession of consumer organisms in two systems (one with plankton, the other with arti cial substrates). The soil samples used were collected from a sector of the Salado-River middle basin with agricultural use and a middle topography. The environmental variables that varied the most greatly were the temperature and conductivity, both increasing throughout the ooding time; whereas the turbidity attained a maximum value at the beginning, but decreased thereafter. The soluble reactive phosphorus remained at a low concentration throughout the experiment, but the nitrates plus nitrites increased over time. The chlorophyll "a" in the water passed through maximum values at the beginning, but in the presence of arti cial substrates the concentration increased with progressive ooding. Of the taxa assessed, 24 were recorded in the plankton system with 18 and 14 detected in Zones I and II, respectively, of the arti cial-substrate systems. The groups of organisms registered in both systems were ciliates, amoebas, rotifers, and nematodes with a dominance mainly by the ciliates. In both systems (plankton and substrates), the speci c diversity was low and the succession of the communities limited. The exposure of the soil to surface-runoff erosion along with the effects of current velocity, turbulence, and turbidity determined the nutrient dynamics plus the emergence and succession of organisms.

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Section: Nutrients and Chlorophyll "A"mentioning

confidence: 86%

Section: Nutrients and Chlorophyll "A"mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm

Zaplara,

Solari,

Gabellone

et al. 2024

Aquat Sci

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Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm.

Zaplara

Solari

Gabellone

et al. 2023

Preprint

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We analyzed the succession of soil organisms and nutrient dynamics under lotic conditions. We simulated typical runoff and erosion conditions in the laboratory using lotic mesocosms. We then analyzed the effects of soil waterlogging under dissimilar times of flooding on environmental variables, water nutrients, the concentration of chlorophyll "a", and the succession of consumer organisms in two systems (one with plankton, the other with artificial substrates). The soil samples used were collected from a sector of the Salado-River middle basin with agricultural use and a middle topography. The environmental variables that varied the most greatly were the temperature and conductivity, both increasing throughout the flooding time; whereas the turbidity attained a maximum value at the beginning, but decreased thereafter. The soluble reactive phosphorus remained at a low concentration throughout the experiment, but the nitrates plus nitrites increased over time. The chlorophyll "a" in the water passed through maximum values at the beginning, but in the presence of artificial substrates the concentration increased with progressive flooding. Of the taxa assessed, 24 were recorded in the plankton system with 18 and 14 detected in Zones I and II, respectively, of the artificial-substrate systems. The groups of organisms registered in both systems were ciliates, amoebas, rotifers, and nematodes with a dominance mainly by the ciliates. In both systems (plankton and substrates), the specific diversity was low and the succession of the communities limited. The exposure of the soil to surface-runoff erosion along with the effects of current velocity, turbulence, and turbidity determined the nutrient dynamics plus the emergence and succession of organisms.

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Development of microconsumers in waterlogged soil: experience in microcosms

Cited by 2 publications

References 32 publications

Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm

Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm

Effects of surface runoff from agricultural soils on the succession of microconsumer organisms in a lotic mesocosm.

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