Browsing by Autor "Jorge Marco"
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Item type: Item , Advancing spatial decision-making in a transboundary catchment through multidimensional ecosystem services assessment(Elsevier BV, 2023) Alicia Correa; Jorge Enrique Forero; Jorge Marco; Iván Lizarazo; Mark Mulligan; Daniele CodatoItem type: Item , Examining the success of the tilapia industry in Huila, an emerging aquaculture hub in the Colombian Southwest(Taylor & Francis, 2025) Jorge Marco; N. Valbuena; Diego Valderrama; Marlen I. VasquezItem type: Item , Improving Utilization of the Queen Conch (<i>Aliger gigas</i>) Resource in Colombia(University of Chicago Press, 2021) Jorge Marco; Diego Valderrama; Mario Rueda; Maykol Rodríguez-PrietoA bioeconomic model was developed to investigate optimal exploitation strategies for the queen conch (Aliger gigas) resource in the Colombian Caribbean. Ecological and economic indicators substantially improved when the status quo management system based on sustained annual harvesting of the resource at a rate of 8% of the total exploitable biomass was replaced with a rotational harvesting scheme whereby fishing was conducted at a higher exploitation rate (30%), following a four-year closure period. Closures allowed queen conch biomass to recover and accumulate undisturbed, leading to an 11% increase in the average standing density of adult conchs and a 26% increase in the net present value of the fishery, as compared with the status quo scenario. Multiple sources of improvement associated with rotation of fishing areas were identified, such as the harvesting of larger quantities of conch meats and pearls as well as reduced fishing costs. In addition to an informed assessment of the economic potential of the fishery under rotational management, the model provides a useful benchmark to estimate the gains associated with further reductions in illegal, unreported, and unregulated fishing, which has brought the fishery to the brink of collapse in recent years.Item type: Item , Moral ties, peer pressure and social norms of cooperation(RELX Group (Netherlands), 2021) Renan Goetz; Jorge MarcoItem type: Item , Optimización del aprovechamiento de productos maderables de tres especies forestales comerciales en el departamento del Guaviare (departamento de la Amazonía Colombiana) (Optimization of the Use of Timber Products of Three Commercial Forest Species in the Department of Guaviare (Department of the Colombian Amazon))(RELX Group (Netherlands), 2023) Yuli Castellanos Niño; Jorge MarcoItem type: Item , The social organization of the commons and public policy design: A social network approach(RELX Group (Netherlands), 2021) Jorge Marco; Renan Goetz