Planktonic Crustacean Assemblages in a System of Three Reservoirs in the Mexican Central Plateau: Seasonal and Spatial Patterns

Ramírez-Olvera, Marco A.; Díaz-Argüero, Magdalena; López‐López, Eugenia

doi:10.1080/02705060.2004.9664508

Cited by 4 publications

(6 citation statements)

References 26 publications

(14 reference statements)

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“…This dam was built in 1940 to supply water for domestic consumption as well as for industrial and agricultural activities. The Cointzio reservoir (6 km 2 ; 65×10 6 m 3 ) undergoes significant sedimentation, which leads to an increase in water turbidity in the lake inducing a drastic decline in the zooplankton population disturbing the entire trophic chain (Ramirez-Olvera et al, 2004) and to a 20% loss of its water storage capacity (Susperregui et al, 2009). Increasing siltation of this reservoir is a major concern in the Morelia region where it supplies a significant part of distributed water.…”

Section: Study Areamentioning

confidence: 99%

Sediment dynamics during the rainy season in tropical highland catchments of central Mexico using fallout radionuclides

Evrard

Némery

Gratiot³

et al. 2010

Geomorphology

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International audienceTropical regions are affected by intense soil erosion associated with deforestation, overgrazing, and cropping intensification. This land degradation leads to important on-site (e.g., decrease in soil fertility) and off-site (e.g., reservoir siltation and water pollution) impacts. This study determined the mean soil particle and sediment residence times in soils and rivers of three subcatchments (3-12 km2) with contrasted land uses (i.e., cropland, forests, and rangelands) draining to a reservoir located in highlands of the transvolcanic Mexican belt. Calculations were based on rainfall amount and river discharges as well as on fallout radionuclide measurements (Be-7, Cs-137, and Pb-210) conducted on rainfall precipitated samples, soil sampled in the catchments, and suspended sediment collected by automatic samplers in the river during most storms recorded throughout the 2009 rainy season. Calculations using a radionuclide two-box balance model showed that the mean residence time of particles in soils ranged between 5000 ± 1500 and 23,300 ± 7000 years. In contrast, sediment residence time in rivers was much shorter, fluctuating between 50 ± 30 and 200 ± 70 days. The shortest mean residence times were measured in a hilly catchment dominated by cropland and rangelands, whereas they were the longest in an undulating catchment dominated by forests and cropland. Calculation of the Be-7/excess-Pb-210 in both rainfall and sediment allowed gaining insight on sediment dynamics throughout the rainy season. The first heavy storms of the year exported the bulk of the sediment stock accumulated in the river channel during the previous year. Then, during the rainy season, the two steeper catchments dominated by cropland and rangelands reacted strongly to rainfall. Sediment was indeed eroded and exported from both catchments during single heavy storms on several occasions in 2009. In contrast, the agro-forested catchment with gentler slopes exported sediment at a constant and low rate throughout the rainy season. Overall, land cover and flood type clearly proved to exert more control on sediment export than slope steepness and rainfall erosivity. Our results show the priority of stabilising old gully systems to prevent their extension by regressive erosion to cropland and to concentrate the implementation of on-site erosion control measures in cropland and rangeland of the most reactive catchments

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Section: Study Areamentioning

confidence: 99%

Sediment dynamics during the rainy season in tropical highland catchments of central Mexico using fallout radionuclides

Evrard

Némery

Gratiot³

et al. 2010

Geomorphology

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“…2002). The crustacean assemblages and phytoplankton composition were also studied, being found to be highly affected by environmental deterioration along the Rio Grande River (Ramirez‐Olvera et al . 2004).…”

Section: Introductionmentioning

confidence: 99%

“…2004). A high concentration of mineralogical suspended particulate matter (SPM), associated with increased turbidity, could result in drastic population declines of small zooplankton (Ramirez‐Olvera et al . 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Studies of the Cointzio Reservoir over the past few decades have focused on such topics as nutrient limitation of algal biomass (Lopez Lopez & Davalos-Lind 1998), fish fauna assemblages (Soto-Galera et al 1999) and waterfowl communities (Severo et al 2002). The crustacean assemblages and phytoplankton composition were also studied, being found to be highly affected by environmental deterioration along the Rio Grande River (Ramirez-Olvera et al 2004). A high concentration of mineralogical suspended particulate matter (SPM), associated with increased turbidity, could result in drastic population declines of small zooplankton (Ramirez-Olvera et al 2004).…”

Section: Introductionmentioning

confidence: 99%

“…The crustacean assemblages and phytoplankton composition were also studied, being found to be highly affected by environmental deterioration along the Rio Grande River (Ramirez-Olvera et al 2004). A high concentration of mineralogical suspended particulate matter (SPM), associated with increased turbidity, could result in drastic population declines of small zooplankton (Ramirez-Olvera et al 2004). Despite this possibility, there has been no limnological study of Cointzio Reser voir.…”

Section: Introductionmentioning

confidence: 99%

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A preliminary hydrosedimentary view of a highly turbid, tropical, manmade lake: Cointzio Reservoir (Michoacán, Mexico)

Susperregui¹,

Gratiot

Estèves

et al. 2009

Lakes & Reservoirs

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International audienceThis study represents the first limnological assessment of Cointzio Reservoir (Michoacán, Mexico). A full three-dimensional scan of temperature, conductivity and turbidity was done for the reservoir during two field surveys at the end of the 2005 rainy season (December 2005), and before the beginning of the next season (May 2006). These parameters also were measured continuously during the 2006 rainy season. Analysis of data within the context of local climate trends at a multidecadal scale indicates the reservoir can amplify seasonal features because of its morphometric properties. Between June to December, the reservoir behaved as a fluvial system, exhibiting a rapid, efficient mixing of the water column. Between January to May, the reservoir developed substantial stratification, and exhibited typical lacustrine characteristics. These alternate phases of fluvial and lacustrine regimes, associated with a high water turbidity throughout the year (Secchi depth of ≈0.2 m) contributes to stress on this aquatic ecosystem

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Tracing sediment sources in a tropical highland catchment of central Mexico by using conventional and alternative fingerprinting methods

Evrard

Poulenard

Némery

et al. 2012

Hydrological Processes

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Land degradation is intense in tropical regions where it causes for instance a decline in soil fertility and reservoir siltation. Two fingerprinting approaches (i.e. the conventional approach based on radionuclide and geochemical concentrations and the alternative diffuse reflectance infrared Fourier transform spectroscopy method) were conducted independently to outline the sources delivering sediment to the river network draining into the Cointzio reservoir, in Mexican tropical highlands. This study was conducted between May and October in 2009 in subcatchments representative of the different environments supplying sediment to the river network. Overall, Cointzio catchment is characterized by very altered soils and the dominance of Andisols and Acrisols. Both fingerprinting methods provided very similar results regarding the origin of sediment in Huertitas subcatchment (dominated by Acrisols) where the bulk of sediment was supplied by gullies. In contrast, in La Cortina subcatchment dominated by Andisols, the bulk of sediment was supplied by cropland. Sediment originating from Potrerillos subcatchment characterized by a mix of Acrisols and Andisols was supplied in variable proportions by both gullies and rangeland/cropland. In this latter subcatchment, results provided by both fingerprinting methods were very variable. Our results outline the need to take the organic carbon content of soils into account and the difficulty to use geochemical properties to fingerprint sediment in very altered volcanic catchments. However, combining our fingerprinting results with sediment export data provided a way of prioritizing the implementation of erosion control measures to mitigate sediment supply to the Cointzio reservoir supplying drinking water to Morelia city. a According to FAO (2006). b Derived from the analysis of aerial photographs. FINGERPRINTING SEDIMENT SOURCES IN MEXICO

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Planktonic Crustacean Assemblages in a System of Three Reservoirs in the Mexican Central Plateau: Seasonal and Spatial Patterns

Cited by 4 publications

References 26 publications

Sediment dynamics during the rainy season in tropical highland catchments of central Mexico using fallout radionuclides

Sediment dynamics during the rainy season in tropical highland catchments of central Mexico using fallout radionuclides

A preliminary hydrosedimentary view of a highly turbid, tropical, manmade lake: Cointzio Reservoir (Michoacán, Mexico)

Tracing sediment sources in a tropical highland catchment of central Mexico by using conventional and alternative fingerprinting methods

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