Carbon cycle in the soil of the flood planire of rio mapire, Anzoátegui state
Keywords:
Flood plain, Mapire river, topographic gradient, biogeochemical cycles, microbial activityAbstract
During the rainy season, the mouth of the Mapire River is transformed into a complex system, a floodplain due to the increase of the water level in this river, due to the damming caused by the Orinoco River. In this region, there are areas with variable flood intensity, and spatial differences in soil texture and moisture content as a consequence of the topographic gradient perpendicular to the riverbed. The samples were collected at three times of the year (drought, onset of rain and flood) following a systematic sampling at 4 gradient points.
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References
Anderson, J.; Ingram, J.S. (1993). Tropical Soil Biology and Fertility: A Handbook of Methods. CAB International. Wallingford. UK.
Banach, A.M.; Banach, K.; Visser, E.J.W; Stepniewska, Z.; Smits, A.J. M.; Roelofs, J.G.M.; Lamers, L.P.M. (2009).
Effects of summer flooding on floodplain biogeochemistry in Poland; implications for increased flooding frequency. Biogeochemistry 92: 247–262.
Bastardo, H. (1983). Los microorganismos y su importancia en el proceso de descomposición. Trabajo de Ascenso. Universidad Central de Venezuela.
Carballas, M.T. (2004). La material orgánica del suelo y el cambio climático global. Discurso de Ingreso, Academia de Farmacia de Galicia. Imprenta Universitaria. Santiago de Compostela.
Carbón, J.; Schubert, C. (1994). Late Cenozoic history of the eastern Llanos of Venezuela: geomorphology and stratigraphy of the Mesa Formation. Quaternary International 21: 91–100.
Chacón N.; Dezzeo, N.; Rangel, M.; Flores, S. (2008). Seasonal changes in soil phosphorus dynamics and root mass along a flooded tropical forest gradient in the lower Orinoco River, Venezuela. Biogeochemistry 87:157–168.
Chakrabarty, A. N.; Sati, A.; Pramanik, M.K. (1970). The Hydrolysis of Tween 80 by Vibrios and Aeromonads. Journal of Applied Bacteriology 33: 397-402.
Fernández, M.D.; Pieters, A.; Donoso, C.; Herrera, C.; Tezara, W.; Rengifo, E.; Herrera, A. (1999). Seasonal changes in photosynthesis of trees in the flooded forest of the Mapire river. Tree Physiology. 19: 79–85.
Fierer, N.; Schimel, J.P.; Holden, P.A. (2003). Variations in microbial community composition though two soils depth profiles. Soil Biology and Biochemistry. 35: 167-176.
Hammer, Ø.; Harper, D.A. (2001). PAST: Paleontological Satatistics Software Package for education and data analysis. Palaeontologia Electronica. 4(1): 9.
McFaddin, J. (2004). Pruebas Bioquímicas Para La Identificación De Bacterias De Importancia Clínica. 3ª Edición. Ediciones Panamericana. Argentina.
Parkinson, D., Gray, T.R.G.; Williams, S.T. (1971). Methods for Studying the Ecology of Soil Micro-organisms. IBP Handbook No 19. International Biological Programme. Blackwell Scientific Publications. Oxford.
Ravot, G.; Ollivier, B.; Magot, M.; Patel, C. (1995). Thiosulfate reduction, an important physiological feature shared by members of the order Thermotogales. Applied Environmental Microbiology. 61: 2053-2055.
Rees, G.; Watson, G.; Baldwin, D.; Mitchell, A. (2006). Variability in sediment microbial communities in a semipermanent stream: impact of drought. Journal the North American Benthological Society. 25(2): 370- 378.
Smart, K.; Jackson, C. (2009). Fine Scale Patterns in Microbial Extracellular Enzyme Activity during Leaf Litter Decomposition in a Stream and its Floodplain. Microbial Ecology. 58: 591- 598.
Sollins, P.; Spycher, G.; Glassman, C. (1984). Net nitrogen mineralization from light- and heavy-fraction forest soil organic matter. Soil Biology and Biochemistry. 16(1): 31-37.
Stoeckel, D.M.; Miller-Goodman, M.S. (2001). Seasonal Nutrient Dynamics of Forested Floodplain Soil Influenced by Microtopography and Depth. Soil Science Society of America Journal. 65: 922-931.
Vegas-Vilarrúbia, T.; Herrera., F. (1993). Effects of periodic flooding on thewater chemistry and primary production of the Mapire systems (Venezuela). Hydrobiologia. 262: 31-42.
Walkley, A.; Black, A. (1934). An examination of the Degtjareff method for determining soil organic matter and a proposed modification of the chromic acid titration method. Soil.
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