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Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales is the property of Academia Colombiana de Ciencias Exactas, Fisicas y Naturales and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Biológico Agropecuaria Tuxpan is the property of Revista Biologico Agropecuaria Tuxpan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Investigación Agraria is the property of Investigacion Agraria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We estimated the carbon (C) stored in the total aerial biomass of native forests of the Espinal (Ñandubay District, Entre Ríos Province, Argentina) and the reduction of CO2 emissions by avoided deforestation. In this work, it was used the information reported in the First National Inventory of Native Forests from 2007. The forests from the evaluated area stored a total of 54.48 Tg C, with an average of 38.82 Mg.ha-1. In a zero deforestation scenario from 2020, an emission reduction of the order of 17.7 Tg CO2 would be achieved by 2030, representing 3.7% of the national goal proposed by Argentina not to exceeding, the net emission of 483 Tg CO2 (Nationally Determined Contribution). The Espinal forests conservation also constitutes a mechanism with great potential to generate and commercialize C credits according to the standards of the REDD + mechanism. [ABSTRACT FROM AUTHOR]

Coastal wetlands of Lima are ecosystems where plants store a large amount of biomass, and soil with very rich with organic matter. These characteristics make these ecosystems potential and important carbon storage in the desert coast of Peru. Despite this, frequent fires of anthropogenic origin have been reported, which could affect this ecosystem service. The objective of this work was to quantify the carbon stored in the American bulrush (Schoenoplectus americanus) community in the Protected Area Los Pantanos de Villa Wildlige Refuge (RVSPV) under two scenarios of American Bulrush's growth, the first scenario was a natural growth zone (unburned area), and the other was a post-fire zone (burned area) after a year of disturbance. For this, 5 plots of 1m2 were made in each scenario; in each plot the aboveground biomass (herbaceous and litter/necromass), the root biomass (roots and rhizomes) were measured, and soil samples were taken (up to 30 cm deep). The amount of carbon in the aboveground and belowground was measured by the Dumas method. Our results show that the total carbon sequestration values were 305.37 MgCha-1 in the unburned area, and 155.52 MgCha-1 in the burned area; in both scenarios, the soil stored the most significant amount in the first 10 cm. The potential of this coastal wetland to sequester carbon, and the possibility of including these ecosystems in financial incentives for climate change mitigation are discussed. [ABSTRACT FROM AUTHOR]

Floristic composition, structure and biomass of pine-oak forests in the reserve Santa Rosa, Tisey, Estelí, Nicaragua. The pine-oak forest is distributed from Central Mexico to the North of Nicaragua and represent an important ecosystem for conservation in Mesoamerica. In Nicaragua, several protected areas were established for the preservation of this ecosystem, such as the natural reserve Tisey-Estanzuela; however, this forest is considered susceptible to degradation, due to increasing deforestation and agricultural activities, besides being a narrow ecological niche (700 to 1 500 masl). We studied the floristic composition, forest structure and biomass along an altitude gradient dominated by Pinus-Quercus in forest stands on the highlands of Esteli, Northern Nicaragua. A vegetation survey on 15 plots (0.1 ha = 20x50 m) was carried out to identify patterns of tree density and diversity, and carbon stocks. In each plot, all the woody stems with diameter greater or equal to 2.5 cm were identified to species and the diameter at breast height and total height were measured. A total amount of 1 081 individuals of 24 species (17 families and 21 genera) were registered, being Q. sapotifolia, P. maximinoi, C. vicentina, M. coriacea and S. gladulosum the most abundant species representing 92 % of the individuals. Three forest associations were defined based on the abundance and dominance of Q. sapotifolia, P. maximinoi and the other species, two of those associations were dominated by Pinus (pine forest and pine-oak forest) at altitudes between 1 300 to 1 400 masl, while the third association, dominated by oak and other species (Cletha vicentina, Myrsine coriaceae and Sapium glandulosum), was found mainly at altitudes higher than 1 400 masl. Tree composition and species richness was influenced significantly by the dominance of Pinus, showing a negative correlation between the dominance and species richness of broadleaved trees other than Quercus spp. with the dominance of Pinus spp. (P < 0.001). However, the association dominated by Pinus, presented higher stem volume and biomass compared with other associations. The results from this study suggest that stands with both, an oak- or oak-pine-dominated canopy, presented the highest diversity, while Pinus dominated stands presented lower tree diversity, but higher aerial biomass and carbon storage. For this reason, we suggest that the strategies for ecosystem service payments as carbon sequestration or biodiversity conservation, must take into account differences in the type of forest associations found in this work. [ABSTRACT FROM AUTHOR]