Fluvial fluxes into the Caribbean Sea and their impact on coastal ecosystems: The Magdalena River, Colombia

Restrepo, Juan D.; Zapata, Paula; Díaz, Juan Manuel; Garzón-Ferreira, Jaime; García, Camilo

doi:10.1016/j.gloplacha.2005.09.002

Cited by 120 publications

(113 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…40 t km -2 year -1 . Restrepo et al (2006) calculated that the weathering rate of the Magdalena River in Colombia was 120 t km -2 year -1 , resulting from both rock weathering (limestone) and anthropogenic effects (a well-known factor that affects all ecosystems in the Caribbean region).…”

Section: Total Dissolved Solids (Tds)mentioning

confidence: 99%

Yields of suspended sediment and dissolved solids from the Andean basins of Ecuador

Armijos

Laraque

Barba

et al. 2013

Hydrological Sciences Journal

View full text Add to dashboard Cite

Water discharge and suspended and dissolved sediment data from three rivers (Napo, Pastaza and Santiago) in the Ecuadorian Amazon basin and a river in the Pacific basin (Esmeraldas) over a 9-year period, are presented. This data set allows us to present: (a) the chemical weathering rates; (b) the erosion rates, calculated from the suspended sediment from the Andean basin; (c) the spatio-temporal variability of the two regions; and (d) the relationship between this variability and the precipitation, topography, lithology and seismic activity of the area. The dissolved solids load from the Esmeraldas basin was 2 × 10 6 t year -1 , whereas for the Napo, Pastaza and Santiago basins, it was 4, 2 and 3 × 10 6 t year -1 , respectively. For stations in the Andean piedmont of Ecuador, the relationship between surface sediment and the total sediment concentration was found to be close to one. This is due to minimal stratification of the suspended sediment in the vertical profile, which is attributed to turbulence and high vertical water speeds. However, during the dry season, when the water speed decreases, sediment stratification appears, but this effect can be neglected in the sediment flux calculations due to low concentration rates. The suspended sediment load in the Pacific basin was 6 × 10 6 t year -1 , and the total for the three Amazon basins was 47 × 10 6 t year -1 . The difference between these contributions of the suspended sediment load is likely due to the tectonic uplift and the seismic and volcanic dynamics that occur on the Amazon side.

show abstract

Section: Total Dissolved Solids (Tds)mentioning

confidence: 99%

Yields of suspended sediment and dissolved solids from the Andean basins of Ecuador

Armijos

Laraque

Barba

et al. 2013

Hydrological Sciences Journal

View full text Add to dashboard Cite

show abstract

“…To avoid nutrient enrichment on coral reefs, the biologically available nitrogen (nitrates and ammonia) should be lower than 1.0 uM (<0.014 ppm), and the biologically available phosphorous less than 0.1 uM (<0.003 ppm) [20]. High sediments and low salinity have inhibitory effects on reef communities and the sedimentary processes, including various associations between substrate type, turbidity and light availability, affect coral distributions on all scales from local depth restrictions to broad-scale biogeography [21]. Caño Correa concentration of solids, nutrients and salinity have contributed to current low levels (22%) of coral cover in Rosario Island and San Bernado Natural Park [22].…”

Section: Coralsmentioning

confidence: 99%

Influence of the surface water quality of the Caño Correa on the coral reefs of the Corales del Rosario and San Bernardo National Natural Park (Colombian Caribbean)

Baldiris-Navarro¹,

Sanchez-Aponte²,

Acosta-Jimenez³

et al. 2017

IJET

View full text Add to dashboard Cite

Abstract-The quality of the surface water of Caño Correa and its influence on the coral reefs of the Corales del Rosario and San Bernardo National Natural Park located in the waters of the Colombian Caribbean were analyzed. Multivariate analysis of the water quality data-set was performed through PCA. The statistical analysis showed that the nutrients are at levels close to eutrophication, the solids exceed the levels established by the regulations and the salinity presents abrupt changes in their levels, all these factors affect the health of the marine ecosystems. The principal component analysis identified four components that explain 67.27% of the total variance of the data. The first factor represents the agroindustrial contribution, the second factor represents pollution by minerals and organic matter, the third factor is due to wastewater-fertilization and the fourth factor is clearly microbiological.

show abstract

“…Aalto et al, 2006;Armijos et al, 2013;Laraque et al, 2009;Molina et al, 2007Molina et al, , 2008Pépin et al, 2010;Restrepo et al, 2006a;Guyot, 1993). In the northern Andes, mean annual runoff explained most SSY variability in the Magdalena River catchment and sub-catchments (Restrepo et al, 2006b). However, this study only explored hydrologic, morphometric and climatic factors and cannot explore vegetation, soil properties and the effect of land use because of a lack of information about these parameters.…”

Section: Introductionmentioning

confidence: 98%

Pertinent spatio-temporal scale of observation to understand suspended sediment yield control factors in the Andean region: the case of the Santa River (Peru)

Morera

Condom

Vauchel

et al. 2013

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Hydro-sedimentology development is a great challenge in Peru due to limited data as well as sparse and confidential information. This study aimed to quantify and to understand the suspended sediment yield from the westcentral Andes Mountains and to identify the main erosioncontrol factors and their relevance. The Tablachaca River (3132 km 2 ) and the Santa River (6815 km 2 ), located in two adjacent Andes catchments, showed similar statistical daily rainfall and discharge variability but large differences in specific suspended-sediment yield (SSY). In order to investigate the main erosion factors, daily water discharge and suspended sediment concentration (SSC) datasets of the Santa and Tablachaca rivers were analysed.Mining activity in specific lithologies was identified as the major factor that controls the high SSY of the Tablachaca (2204 t km 2 yr −1 ), which is four times greater than the Santa's SSY. These results show that the analysis of control factors of regional SSY at the Andes scale should be done carefully. Indeed, spatial data at kilometric scale and also daily water discharge and SSC time series are needed to define the main erosion factors along the entire Andean range.

show abstract

Fluvial fluxes into the Caribbean Sea and their impact on coastal ecosystems: The Magdalena River, Colombia

Cited by 120 publications

References 52 publications

Yields of suspended sediment and dissolved solids from the Andean basins of Ecuador

Yields of suspended sediment and dissolved solids from the Andean basins of Ecuador

Influence of the surface water quality of the Caño Correa on the coral reefs of the Corales del Rosario and San Bernardo National Natural Park (Colombian Caribbean)

Pertinent spatio-temporal scale of observation to understand suspended sediment yield control factors in the Andean region: the case of the Santa River (Peru)

Contact Info

Product

Resources

About