Effect of open ditch draining on sediment and soil properties in cultivated areas in southeast Mexico

Geissen, Violette; Hernández, I. Casasola; Lozada, A. Sepúlveda

doi:10.1016/j.geoderma.2006.04.002

Cited by 7 publications

(5 citation statements)

References 20 publications

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“…The banana farms have an open-ditch drainage system with secondary and tertiary drains leading to one primary drain per farm. All primary drains discharge into the runnel Sane that empties into Sitio Grande (Geissen et al, 2006). The pastureland has only primary drains that discharge into the runnel.…”

Section: Study Sitementioning

confidence: 99%

Water quality under intensive banana production and extensive pastureland in tropical Mexico

Aryal

Geissen

Ponce‐Mendoza

et al. 2012

Z. Pflanzenernähr. Bodenk.

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The effects of intensive banana production with high mineral-fertilizer application and of extensive pastures were compared regarding water quality in a lowland region of SE Mexico. We monitored NO À 3 , NO À 2 , and PO 4 3-concentrations in groundwater (80 m depth), subsurface water (5 m depth), and surface water (open-ditch drainage) at monthly intervals for a one-year period. Irrespective of the land use, the NO À 3 concentrations in all water bodies were lower than the threshold value for drinking water and aquatic life. Particularly in areas with intense banana production, the NO À 2 contents in water exceeded the safety thresholds for drinking water of 1.0 mg L -1 (WHO, 2006) and aquatic ecosystems of 0.2 mg L -1 (OATA, 2008). Water from pastureland showed significantly higher PO 4 3-concentration than that from the banana plantation, indicating a high risk of eutrophication. There is a need to provide recommendations for optimal time and amount of N application in commercial banana production and for limitation of P inputs in pasturelands to avoid further contamination of water bodies.

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Section: Study Sitementioning

confidence: 99%

Water quality under intensive banana production and extensive pastureland in tropical Mexico

Aryal

Geissen

Ponce‐Mendoza

et al. 2012

Z. Pflanzenernähr. Bodenk.

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“…1). El clima de la región es cálido húmedo con precipitaciones a lo largo de todo el año (Af) (Geissen et al, 2006). En la subcuenca del río Puyacatengo la temperatura media anual es de 26.9°C con una precipitación anual de 2,563 mm, mientras que en la subcuenca del río Pichucalco, la temperatura media anual es de 25.3°C con una precipitación anual de 4,033.4 mm; la subcuenca del río Teapa presenta una temperatura media anual de 25.2°C y 4,953.7 mm de precipitación por año (INEGI, 2017).…”

Section: Materiales Y Métodosunclassified

Land use changes affect water quality and chlorophyll concentration in tropical streams

Castillo-Uzcanga

2023

Hidrobiológica

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Section: Materiales Y Métodosunclassified

Untitled

2022

Hidrobiológica

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Background: Algal blooms have increased in frequency and intensity in recent decades. Excess nutrients of anthropogenic origin may be an essential factor that gives rise to these blooms. Goals: This work aimed to study an unusual bloom of the chlorophyte Chlamydomonas in an urban lake from a morphological and chemical approach. Methods: The study site was a small lake located in Cantera Oriente, Mexico City. Sampling was performed in February 2016 (the cold-dry season); environmental variables were measured in situ, and surface samples were obtained for organism abundance and chlorophyll-a concentration. An additional sample was freeze-dried for chemical analyses, and another sample was fixed in glutaraldehyde for ultrastructural studies by SEM, TEM, LM, and confocal microscopy, using the stain Nile red to detect the presence of intracellular lipids. Results: The results of morphological observations agreed with the characteristics of the description of C. reinhardtii. The bloom abundance values were high (6.98 x 10 5 ± 1.37 x 10 5 cells mL -1 ), confirmed by the high values of chlorophyll-a concentration (5548 ± 796 µg L -1 ). The carbohydrate:protein ratio of the cells (0.15) indicates high protein synthesis during the enormous algal proliferation. The low lipid content (6.5 %) is associated with the absence of intracellular lipid granules and may be related to the availability of nitrogen and phosphorus and high vegetative multiplication. C. reinhardtii synthesizes essential fatty acids, such as alpha-linolenic acid (Omega 3), a precursor of beneficial lipids in human cardiovascular and neurological health. Conclusions: The bloom consisted mainly of Chlamydomonas reinhardtii and it significantly correlated with the chlorophyll a concentration, indicating high photosynthetic capacity and active cell division. Linoleic acid (Omega 3), an important substance for human health, was present in the alga composition. A controlled culture of this alga could improve the Omega 3 concentration offering a biotechnological resource for the future.

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Effect of open ditch draining on sediment and soil properties in cultivated areas in southeast Mexico

Cited by 7 publications

References 20 publications

Water quality under intensive banana production and extensive pastureland in tropical Mexico

Water quality under intensive banana production and extensive pastureland in tropical Mexico

Land use changes affect water quality and chlorophyll concentration in tropical streams

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