Examinando por Materia "Deforestation"
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Publicación Against the Odds: Community forestry in the San Lucas Mountains, Colombia(Elsevier, 2026) Vélez Zapata, Sara; Vargas, Gonzalo A.; Castaño, Elizabeth; Muñoz, Carolina; Londoño, Yeison; Zamudio-Mir, María Camila; Ríos, Mariela; Palau, Alexander; Valencia, Sergio; Tovar, Manuel; Tobón, Jorge; Uribe, Mauricio; Eslava, Adolfo; Universidad EAFIT, Colombia; Kedge Business School, France; Universidad de los Andes, Colombia; Corporación Grupo Trópico Diverso, Colombia; Colectivo Gente y Bosques, El Bagre, ColombiaCommunity forestry can reduce deforestation, protect tropical biodiverse hotspots, and support the livelihoods of rural inhabitants, but only under the right conditions, e.g., well-defined property rights, enabling regulation, supportive bureaucracies, robust community institutions, and a peaceful environment in which collective action is possible. Since forest-rich regions often lack such auspicious circumstances, in this article, we ask whether community forestry may still be effective when they are missing and, if so, under what conditions. Using fuzzy-set Qualitative Comparative Analysis, we analysed the practices and organisational arrangements of eleven communes (veredas) on the western slopes of the San Lucas Mountains, in northern Colombia, characterised by a weak state presence and the chronic influence of non-state armed groups. Our findings suggest that communities can achieve low deforestation rates and promote forest regeneration when they meet three conditions: legitimate environmental leadership, support from external partners, and sustainable values and practices in relation to the natural environment. This article expands our knowledge of the conditions that make community forestry more effective in curbing deforestation and forest degradation. It provides actionable advice for civil society and local organisations that want to reduce deforestation and support vulnerable rural communities even when the ‘right’ policies and institutions are absent.Publicación Análisis jurídico de la declaración conjunta de intención sobre la reducción de emisiones de gases de efecto invernadero en Colombia(Universidad EAFIT, 2024) Rodríguez Reyes, María Isabella; Arango Duque, Camilo; N/AThe signing and renewal of the Joint Declaration of Intent (DCI). Between the partner countries and Colombia is an important legal mechanism in the fight against global warming. This initiative, based on the consideration of greenhouse gas (GHG) emissions, focuses its proposals on the conservation of forest ecosystems and the integration of different sectors of society in environmental policies, with special emphasis on local communities and indigenous peoples. This approach is reflected in the implementation of projects ranging from Payments for Environmental Services (PES) to initiatives such as Visión Amazonía. The purpose of this monograph is to analyze the incorporation of ICD into Colombia's legal and environmental framework, highlighting the changes and advances of this model, which operates as a results-based payment mechanism. At the time of writing, the first periods of implementation of the ICD have passed, including its renewal in 2019. It is therefore essential to contrast the initial principles with the milestones described in the official documents and to provide a prospective view of this last implementation period until 2025.Publicación Detección de cambios en la cobertura vegetal para el municipio de Florencia, Caquetá(Universidad EAFIT, 2023) Beltrán Rojas, Julitza; Ramírez Rojas, María IsabelPublicación Evaluación del impacto del crédito agropecuario en la deforestación en Colombia(Universidad EAFIT, 2022) Carreño Monguí, Julian Fernando; Parra Pulido, Hernán Dario; Couleau, AnabelleÍtem Human induced discharge diversion in a tropical delta and its environmental implications: The Patía River, Colombia(ELSEVIER SCIENCE BV, 2012-03-06) Restrepo, Juan D.; Kettner, Albert; Universidad EAFIT. Departamento de Geología; Ciencias del MarThe Patía River, the number one in terms of sediment yield ~1500tkm -2yr -1 draining the western South America, has the most extensive and well developed delta on the Pacific coast, measuring 1700km 2. During the Holocene, nature forced the Patía delta to the south; however, a major water diversion, starting in 1972, diverted the Patía flow to the Sanguianga River, the latter, a small stream draining internal lakes from the Pacific lowlands. This human induced discharge diversion shifted the active delta plain back to the north and changed the northern estuarine system into an active delta plain. Overall, major environmental consequences of this discharge diversion in terms of morphological changes along the delta coast and distributary channels, are evidenced by: (1) coastal retreat along the abandoned delta lobe; 63% of the southern shoreline is retreating at maximum rates of 7myr -1, with a corresponding coastal land loss of 106myr -1; (2) transgressive barrier islands with exposed peat soils in the surf zone; (3) abandonment of former active distributaries in the southern delta plain with associated closing of inlets and formation of ebb tidal deltas; (4) breaching events on barrier islands; and (5) distributary channel accretion in the northern delta plain by morphological processes such as sedimentation (also in crevasses), overbank flow, increasing width of levees, interdistributary channel fill, and colonization of pioneer mangrove. The Sanguianga Mangrove National Park (SMNP), the largest mangrove reserve in Colombia, measuring 800km 2, lies in this former estuary, where major hydrologic and sedimentation changes are occurring. Observed environmental changes in the SMNP, include (1) seaward advance of the sub-aqueous delta front at the Sanquianga inlet evidenced by an increase in tidal flat area from 5.4Mm 2 in 1986 to 14Mm 2 in 2001; (2) freshening conditions in the Sanguianga distributary channel, a hydrologic change that has shifted the upper estuarine region (salinity <1psu) downstream; (3) downstream advance of freshwater vegetation, which is invading channel banks in the lower and mixing estuarine zones; (4) die-off of approximately 5200ha of mangrove near the delta apex at Bocas de Satinga; and (5) recurrent periods of mangrove defoliation due to a warm plague. Further analysis indicate that during the past two decades, processes such as mangrove erosion in the delta shore, are the result of a short-term relative sea-level rise of 5.1mmyr -1 for the 1984-2006yr-period, after the devastating tsunami of 1979. In the Patía catchment, erosion rates have been more pronounced during the 1970-1980 and 1990-2000 decades, as a result of land degradation and deforestation. Preliminary results indicate that relative resent anthropogenic influences on the Patía River drainage basin have altered the deltaic environment and beyond significantly. © 2011 Elsevier B.V.Ítem The perils of human activity on South American deltas: Lessons from Colombia's experience with soil erosion(INT ASSOC HYDROLOGICAL SCIENCES, 2013-01-01) Restrepo A., Juan D.; Universidad EAFIT. Departamento de Ingeniería; Ciencias del MarThe Andean drainage basins of Colombian deltas exhibit a very delicate variety of ecosystems and environments along its prolonged trajectory, which has made it particularly vulnerable to the onslaught of modernity and human activity. While the increasing intensity of natural disasters in tropical areas is often blamed on global warming, the causes might not be as intractable. Soil erosion and deforestation, both caused by unrestrained human activity, can affect deltas more profoundly. Many anthropogenic influences, including deforestation, an agriculture and pasture increase by 75%, poor soil conservation and mining practices, may have accounted for the overall increasing trends of sediment transport from rivers to Colombian deltas. According to our recent study of human activities in terms of deforestation, 32% of the observed variance in sediment transport from the Magdalena River to its delta could be explained by deforestation. Thus, the amount of sediment transported by the Magdalena to its delta plain, approximately 50 Mt annually, is probably due to deforestation. Also, the Patia River in the Pacific coast has witnessed an increase in sediment transport by 45% during the last decade, an increase mainly accounted for by deforestation. Drawing from Colombia's experience with man-made ecological modifications, this paper offers a preliminary discussion on the implications of human pressure on fluvial ecosystems and their deltas, with the hope that this information will better equip citizens and policymakers across the developing world. Copyright © 2013 IAHS Press.