Bibliographic citations
Ramirez, W., (2017). Efectos cuantitativos del cambio climático en el calendario fenológico de floración y fructificación de siete especies forestales en un bosque establecido en la Región San Martín [Tesis, Universidad Nacional de San Martín. Fondo Editorial]. http://hdl.handle.net/11458/2814
Ramirez, W., Efectos cuantitativos del cambio climático en el calendario fenológico de floración y fructificación de siete especies forestales en un bosque establecido en la Región San Martín [Tesis]. PE: Universidad Nacional de San Martín. Fondo Editorial; 2017. http://hdl.handle.net/11458/2814
@phdthesis{renati/1058822,
title = "Efectos cuantitativos del cambio climático en el calendario fenológico de floración y fructificación de siete especies forestales en un bosque establecido en la Región San Martín",
author = "Ramirez Navarro, Williams",
publisher = "Universidad Nacional de San Martín. Fondo Editorial",
year = "2017"
}
The following investigation was carried out in the Academic Research and Teaching Center of the public Higher Institute of Technological Education "Nor Oriental de la Selva" -Banda de Shilcayo of San Martin Region. The general objective was to determine the quantitative effects of climate change on the phenological calendar of flowering and fruiting of seven forest species: "Capirona" (Calycophyllum spruceanum), "Shaina" (Colubrina grandulosa), "Bolaina" (Guazuma crinita), "Marupa " (Simarouba amara), "Teak tree” (Tectona grandis), "Eucalyptus” (Eucalyptus globules) and " Pink Cedar " (Acrocarpus fraxinifolius), during the period 2013 - 2015. The specific objectives were to check and compare the quantitative effects of the variables of climate change in the phenological calendar. The evaluations included 35 individuals observed weekly for a period of 24 months from August 2013 to July 2015 using the methodology proposed by Fournier to record the time and months of flowering and fruiting. The phase of flowering and fruiting was evaluated using a scale of zero to five where zero indicates (0) absence of characteristics and from one (1) to four (4) presence of characteristic. The non-experimental design of longitudinal type has been used to observe the flowering, fruiting, temperature, rainfall and relative humidity, as they occur in their natural context. For the statistical analysis and calculation of the coefficient of relationship and multiple correlation, the evaluated data has been processed in statistical Software programs such as Minitab and Excel to elaborate the analysis of variance (ANOVA). The analyzed results conclude that the climate change has generated significant effects in the advance of the phenological calendar of flowering and fruiting in the Calycophyllum spruceanum and Simarouba amara species, and in the delays, in the Colubrina grandulosa and Guazuma crinita species; in addition, a great variability in the phenofases of the Tectona grandis and Eucalyptus globules species. It is worth mentioning that these species due to their adaptation, acclimation and habitat have their complete phenological cycle, during the period studied except for the Acrocarpus fraxinifolius / Shingle tree species. The temperature influences the flowering and fruiting. This variable is in the permissible range of 21.3ºC to 33.3ºC, according to the maximum, minimum and average temperature of the period 2013-2015, with respect to the historical pattern 1981-2010, registering anomalies of 0.5°C, 0.4°C, and 0.2°C, respectively. Based on bibliographic sources and observations during the study, the production of the observed species varies up to 50% of its flowering and fruiting during the year evaluated. While rainfall and relative humidity have not influenced the phenomena. By means of the quantitative statistical model of correlation, X2 Chi squared distribution analysis and the Coefficient of determination of the forest species, a relation of positive association has been found weak to positive moderate, this result allows proving the theoretical model and its significance in the phenological calendar.
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