Microbial mat and surface sediment communities from a shallow oxbow lake in the Colorado River floodplain, Argentina

2020 ◽  
Vol 37 (10) ◽  
pp. 937-949
Author(s):  
Rocío Fayó ◽  
Jerónimo Pan ◽  
Marcela A. Espinosa
Keyword(s):  
Surface Sediment ◽  
Colorado River ◽  
Microbial Mat ◽  
Oxbow Lake ◽  
River Floodplain

scholarly journals Oxygen demand during mineralization of aquatic macrophytes from an oxbow lake

2008 ◽  
Vol 68 (1) ◽  
pp. 61-67 ◽  
Author(s):  
I. Bianchini Jr. ◽  
MB. Cunha-Santino ◽  
AM. Peret
Keyword(s):  
Aquatic Macrophytes ◽  
Oxygen Demand ◽  
Oxbow Lake ◽  
Short Term ◽  
River Floodplain ◽  
Dissolved Carbon ◽  
Eichhornia Azurea ◽  
Aerobic Decomposition ◽  
Cyperus Giganteus ◽  
Egeria Najas

This study presents a kinetic model of oxygen consumption during aerobic decomposition of detritus from seven species of aquatic macrophytes: Cabomba furcata, Cyperus giganteus, Egeria najas, Eichhornia azurea, Salvinia auriculata, Oxycaryum cubense and Utricularia breviscapa. The aquatic macrophytes were collected from Óleo Lagoon situated in the Mogi-Guaçu river floodplain (SP, Brazil). Mineralization experiments were performed using the closed bottles method. Incubations made with lake water and macrophytes detritus (500 mL and 200 mg.L-1 (DM), respectively) were maintained during 45 to 80 days at 20 °C under aerobic conditions and darkness. Carbon content of leachates from aquatic macrophytes detritus and dissolved oxygen concentrations were analyzed. From the results we concluded that: i) the decomposition constants differ among macrophytes; these differences being dependent primarily on molecular and elemental composition of detritus and ii) in the short term, most of the oxygen demand seems to depend upon the demineralization of the dissolved carbon fraction.

scholarly journals Estimating groundwater dynamics at a Colorado River floodplain site using historical hydrological data and climate information

2016 ◽  
Vol 52 (3) ◽  
pp. 1881-1898 ◽  
Author(s):  
Jinsong Chen ◽  
Susan S. Hubbard ◽  
Kenneth H. Williams ◽  
Darren L. Ficklin
Keyword(s):  
Colorado River ◽  
Climate Information ◽  
River Floodplain ◽  
Hydrological Data ◽  
Groundwater Dynamics

scholarly journals Abiotic variables in littoral-limnetic gradient of an oxbow lake of Mogi-Guaçu River floodplain, Southeastern, Brazil

2004 ◽  
Vol 47 (6) ◽  
pp. 961-971 ◽  
Author(s):  
Glória Massae Taniguchi ◽  
Denise de Campos Bicudo ◽  
Pedro Américo Cabral Sennab
Keyword(s):  
Hydrological Cycle ◽  
High Water ◽  
Field Trips ◽  
Oxbow Lake ◽  
Southeastern Brazil ◽  
Spatial Gradient ◽  
River Floodplain ◽  
Forcing Function ◽  
Physical And Chemical Variables ◽  
Physical And Chemical

The present study aimed to analyse the abiotic characteristics spatial variability in the littoral-limnetic gradient of the Diogo Pond, Mogi-Guaçu River floodplain, as well as evaluating the hydrological influence on the spatial gradient. During the hydrological cycle, four field trips (high water, flood, low water, and drought) were carried out at three sampling stations: littoral, interface, and limnetic region. Analysis of physical and chemical variables allowed to conclude that the time scale established by the hydrological cycle was the main forcing function over the limnological variability of the Diogo Pond. The relative spatial scale related to littoral-limnetic gradient contributed secondarily to the abiotic variability. Littoral was characterized as a distinct compartment from the other stations during the entire hydrological cycle.

scholarly journals Dissolved metals in surface sediment and a microbial mat at 100-μm resolution

Nature ◽  
10.1038/43147 ◽  
1997 ◽  
Vol 387 (6636) ◽  
pp. 885-888 ◽  
Author(s):  
W. Davison ◽  
G. R. Fones ◽  
G. W. Grime
Keyword(s):  
Surface Sediment ◽  
Microbial Mat ◽  
Dissolved Metals

RESPONSE OF THE FISH COMMUNITY TO OXBOW LAKE RESTORATION IN A LOW-GRADIENT RIVER FLOODPLAIN

2016 ◽  
Vol 15 (6) ◽  
pp. 1269-1279
Author(s):  
Krystian Obolewski ◽  
Katarzyna Glinska-Lewczuk ◽  
Pawel Burandt ◽  
Szymon Kobus ◽  
Agnieszka Strzelczak ◽  
...  
Keyword(s):  
Fish Community ◽  
Lake Restoration ◽  
Oxbow Lake ◽  
River Floodplain

scholarly journals The Barkman Site (41BW693) in the Red River Valley in Northeast Texas

2019 ◽  
Author(s):  
Timothy Perttula ◽  
Rodney Nelson
Keyword(s):  
Main Part ◽  
River Channel ◽  
Red River ◽  
Oxbow Lake ◽  
Clear Lake ◽  
River Floodplain ◽  
Red River Valley ◽  
The North ◽  
North Side ◽  
Large Platform

The Barkman site (41BW693) is an ancestral Caddo settlement on a natural alluvial rise in the Red River floodplain in Bowie County, Texas (Figure 1). The rise is on the north side of Clear Lake, an old river channel and now an oxbow lake, about 140 meters northwest of the large platform mound at the Hatchel site (41BW3, see Perttula 2014, 2015, 2018). The Hatchel site is a major ancestral Caddo village and mound center on a natural levee deposit in the floodplain of the Red River in Bowie County, Texas, just a few kilometers west of the Arkansas state line, and on the south side of Clear Lake. The platform mound and the main part of the associated village overlooks two channel lakes of the river; these likely were part of the channel of the river when the site was occupied by the Caddo. The Hatchel site was occupied by the Caddo from at least A.D. 1040 to the late 17th century, and the Barkman site appears to have been occupied contemporaneously much of the time with this ancestral Caddo village and mound center.

Diatom-based reconstruction of Holocene hydrological changes along the Colorado River floodplain (northern Patagonia, Argentina)

2018 ◽  
Vol 60 (3) ◽  
pp. 427-443 ◽  
Author(s):  
Rocío Fayó ◽  
Marcela A. Espinosa ◽  
Camilo A. Vélez-Agudelo ◽  
Jerónimo Pan ◽  
Federico I. Isla
Keyword(s):  
Colorado River ◽  
River Floodplain ◽  
Northern Patagonia ◽  
Hydrological Changes

Орошение томата F1 Донской в открытом грунте Московской области

2019 ◽  
Author(s):  
D.I. Engalychev ◽  
N.A. Engalycheva ◽  
A.M. Menshikh
Keyword(s):  
Experimental Data ◽  
Agricultural Technology ◽  
Tomato Fruits ◽  
River Floodplain ◽  
Yield And Quality ◽  
Open Ground ◽  
Alluvial Meadow ◽  
Standard Production ◽  
Moscow River

Представлены экспериментальные данные о влиянии капельного орошения на урожайность и качество плодов томата при выращивании культуры в открытом грунте Московской области. На плодородных аллювиальных луговых почвах Москворецкой поймы при соблюдении агротехники без орошения в среднем за три года исследований в полевых условиях получена урожайность томата F1 Донской 31,9 т/га, с орошением 48,5 т/га, в т.ч. стандартной продукции 42,6 т/га.The article presents experimental data on the effect of drip irrigation on the yield and quality of tomato fruits when growing crops in open ground of the Moscow Region. On fertile alluvial meadow soils of the Moscow river floodplain, with the observance of agricultural technology without irrigation, the field yield of tomato hybrid F1 Donskoi on average for three years of research was 31.9 t/ha, with irrigation 48.5 t/ha, incl. standard production 42.6 t/ha.

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