RT Report T1 Caribbean Sea/Colombia & Venezuela, Central America & Mexico-GIWA Regional Assessment 3b, 3c A1 United Nations Environment Programme, A2 Isaza, C. F. A. A2 Sierra-Correa, P. C. A2 Bernal-Velasquez, M. A2 Londono, L. M. A2 Troncoso, W. K1 water K1 water analysis K1 water conservation K1 water consumption K1 water demand K1 water management K1 water monitoring K1 water protection K1 water quality K1 water resource K1 water utilisation K1 environmental assessment K1 freshwater conservation K1 freshwater degradation K1 freshwater ecosystem K1 freshwater monitoring K1 freshwater pollution K1 freshwater resource K1 pollution control K1 pollution cost K1 water pollution K1 environmental conservation K1 environmental impact K1 environmental impact assessment K1 environmental protection K1 coast protection K1 coastal area K1 coastal ecosystem K1 coastal environment K1 coastal pollution K1 coastal water K1 marine conservation area K1 marine ecosystem K1 sea resource K1 sea water protection K1 coastal fishing K1 coastal management PB United Nations Environment Programme (UNEP), GEF, University of Kalmar, Sweden SN 1651-940X YR 2006 FD 2006 LK https://wedocs.unep.org/handle/20.500.11822/8694 UL https://wedocs.unep.org/handle/20.500.11822/8694 NO This report presents the results of the GIWA assessment of the Colombia & Venezuela and Central America & Mexico sub-systems' located in GIWA region 3, the Caribbean Sea. The regional team identified habitat and community modification as the priority concern of both sub-systems. In the Colombia & Venezuela sub-system, coastal habitats are being degraded by a multitude of issues, particularly land-based sources of pollution. The transboundary ecosystems of the Central America & Mexico sub-system have been severely degraded as a consequence of agricultural and urban expansion, increased pollution loads and unsustainable forestry practices. The past and present status and future prospects of these issues are discussed, and they are traced back to their root causes. Feasible policy options are proposed that target key components identified in the Causal chain analysis in order to minimise future impacts on the transboundary aquatic environment. DS UN Environment Document Repository RD Sep 20, 2026