Abstract
Caroni Swamp Ramsar Site, the largest mangrove dominated wetland in Trinidad and Tobago, continues to be impacted by human activities. This study examines changes in land cover and land use from 1942 to 2007 using remote sensing technology, geographic information systems (GIS) and extensive field surveys. Land cover maps were produced for 1942, 1957, 1986, 1994, 2003 and 2007 from aerial photos and high resolution satellite imagery. Caroni Swamp’s hydrology was altered in the 1920’s to facilitate rice cultivation. This resulted in the formation of large tracts of freshwater marsh. From 1942 to 1957, freshwater marsh and agriculture lands increased, but after this period there was a steady decline in both, as freshwater was diverted away from the wetland and salt water intruded further inland. Although mangrove forest was cleared for built development, its coverage has consistently increased in the Swamp from 1957, with the exception of 2003 when there was a decrease by less than 100 ha. This is in contrast to most areas in the tropics where mangrove coverage continue to decline. In this case, the mangrove trees are out-competing/shading marsh vegetation, causing shift in the wetland communities. In the Caroni Ramsar Site, the natural wetland communities generally increased from 1942 to 2003, but declined in 2007, as built development more than doubled. The paper provides spatial coverage, and quantifies land cover from 1942 to 2007. It also identifies reasons for the changes in land cover and uses, and the implications for management.
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References
Bacon PR (1970) The ecology of Caroni Swamp. Special Publication, Central Statistical Office, Trinidad and Tobago
Bacon PR (1993) Mangroves in the Lesser Antilles, Jamaica and Trinidad and Tobago. In: Lacerda LD (Project Co-ordinator)- Conservation and sustainable utilization of mangrove forests in Latin America and Africa Regions. International Tropical Timber Organization/International Society of Mangrove Ecosystems, technical reports vol. 2: part 1- Latin America
Bacon PR, Ffrench RP (1972) The wildlife sanctuaries on Trinidad and Tobago. Wildlife Conservation Committee, Ministry of Agriculture, Lands and Fisheries, Trinidad and Tobago
Bacon PR, Bissessar V, Cuffy G (1997) Study of the feasibility of marsh restoration in the Caroni Swamp, Trinidad. Final report on wetland ecology UWI/IDB Project; p 84
Beard JS (1946) The natural vegetation of Trinidad. Clarendon, Oxford
Bildstein KL (1990) Status, conservation and management of the Scarlet Ibis Eudocimus ruber in the Caroni Swamp, Trinidad, West Indies. Biol Conserv 54:61–78
Blumenfield S, Lu C, Chistophersen T, Coastes D (2009) Water, wetlands and forests. A review of ecological, economic and policy linkages. Secretariat of the Convention on Biological Diversity and Secretariat of the Ramsar Convention on Wetlands, Montreal and Gland. CBD Technical Series No 47
Brown, CB, Hansell JRF, Hill ID, Stark J, Smith, JW (1966) Land Capability Survey of Trinidad and Tobago # 1
Central Statistical Office (CSO) of Trinidad and Tobago (1995) Population and Housing Census 1990
Central Statistical Office (CSO) of Trinidad and Tobago (2000) Population and Housing Census 2000
Cintrón G, Lugo AE, Pool DJ, Morris G (1978) Mangroves of arid environments in Puerto Rico and adjacent islands. Biotropica 10:110–121
Cuffy GC (1999) Seasonal use of a neotropical marsh by avifauna, Caroni, Trinidad. M.Phil. Thesis. Department of Life Sciences, University of the West Indies, St. Augustine, Trinidad
Deonarine G (1980) Studies on the biomagnification of some chlorinated hydrocarbons in a neotropical mangrove Swamp. M.Phil Dissertation, University of the West Indies
Donawa AL (1976) Draft Report of pollution ecologist-Caroni River Basin Study. Government of Trinidad and Tobago
FAO (1994) Mangrove forest management guidelines FAO Forestry Paper 117, Rome
ffrench RP (1984) The scarlet ibis in Trinidad. Evaluation and Development of Wildlife Resources, Trinidad and Tobago. Report to the Ministry of Agriculture, Lands and Food Production; p 10
Field CD (1995) Journey amongst mangroves. International Society for Mangrove Ecosystem, Okinawa
Gerald L (1985) The changing Caroni Swamp. Naturalist 6:14–17
Grimm NB, Faeth SH, Golubiewski NE, Redman CL, Wu J, Bai X, Briggs JM (2008) Global changes and the ecology of cities. Science 319:756–760
Institute of Marine Affairs (IMA) (1999) Trinidad and Tobago Water Sector Institutional Strengthening Design and Implementation of the Surface Water Quality Monitoring Programme for the Caroni River Basin Draft Final Report–Surface Water Quality in the Caroni River Basin. Trinidad and Tobago
Juman R, Bacon P, Gerald L (2002) Caroni Basin Case Study, Caribbean Basins, LOICZ (Land-Ocean Interaction in the Coastal Zone) Global Change Assessment and Synthesis of River Catchment/Island Coastal Sea Interaction and Human Dimensions, with a desktop study of Oceania Basins. LOICZ Reports and Studies No. 27, ii + 174 pp, LOICZ Texel, The Netherlands
Kjerfve B, Wiebe WJ, Kremer HH, Salomons W, Marshall Crossland JI (Caribbean), Marcom N, Harvey N, Marshall Crossland JI (Oceania) (2002) Caribbean Basins: LOICZ Global Change Assessment and Synthesis of River Catchment/Island-Coastal Sea Interaction and Human Dimensions, with a desktop study of the Oceania Basins, LOICZ Reports and Studies No. 27, ii + 174 pp, LOICZ Texel, The Netherlands
Millennium Ecosystem Assessment (2005) Ecosystems and human well-being: Wetlands and Water synthesis. World Resource Institute, Washington
Minnich RA, Bahre CJ (1995) Wildland fire and chaparral succession along the California-Baja California boundary. Int J Wildland Fire 5:13–24
Mosher L (1986) At sea in the Caribbean? In: Maguire A, Brown JW (eds) Bordering on trouble: resources and politics in Latin America. Adler and Adler Publications, Bethesda, pp 235–269
Nathai-Gyan G (2006) Restoration of the Freshwater Marsh Ecosystem of the Caroni Swamp to improve foraging opportunity for the Scarlet Ibis (Eudocimus ruber) Draft M Phil Thesis, University of the West Indies, St Augustine; p 144
Nickerson NH, Thibodeau FR (1985) Association between pore water sulphide concentrations and the distribution of mangroves. Biogeochemistry 1:183–192
Phelps HO (1997) Caroni Swamp Rehabilitation Study- hydrology and engineering. Report to the Inter American Development Bank
Pool D, Lugo AE, Snedaker SC (1975) Litter productions in mangrove forest of southern Florida and Puerto Rico. In: Walsh GE, Snedaker SC, Teas HJ (eds) Proceedings of the International Symposium on Biology and Management of Mangroves. East West Center, Honolulu
Santos MCFV, Zieman JC, Cohen RRH (1997) Interpreting the upper mid-littoral zonation patterns of mangroves in Maranhao (Brazil) in response to microtopography and hydrology. In: Kjerfve B, de Lacerda LD, Diop EHS (eds) Mangrove ecosystems studies in Latin America and Africa. UNESCO and Tokyo: ISME, Paris
Siung-Chang AM, Norman PE, Dalipsingh R (1987) Caroni river study–organic pollution. Institute of Marine Affairs, Chaguaramas
Skinner GN (1995) Change in spatial characteristics of forest openings in the Klamath of northwestern California, USA. Landscape Ecol 10:219–228
Turner IM, Wong YK, Chew PT, Ibrahim AB (1996) Rapid assessment of tropical rain forest successional status using aerial photographs. Biol Conserv 77:177–183
Valiela I (2006) Global coastal change. Blackwell Publ, Oxford, p 359
Valiela I, Kinney E, Culbetson J, Peacock E, Smith S (2009) Global losses of mangroves and salt marshes: magnitudes, causes and consequences. In: Duarte C (ed) Global loss of coastal habitats: rates, causes, and consequences. Fundación BBVA, Bilbao, pp 107–138
Van Wyk GF, Everard DA, Midgley JJ, Gordon IG (1996) Classification and dynamics of southern African subtropical coastal lowland forest. S Afr J Bot 62:133–142
Vitousek PM, Mooney HA, Lubchenco J, Melillo JM (1997) Human domination of earth’s ecosystem. Science 227(5325):494–499
World Resources Institute (1996) World resources 1996–1997. Oxford University Press, New York
Worm B, Barbier EB, Beaumont N, Duffy JE, Folke C, Halpern BS, Jackson JBC, Lotze HK, Micheli F, Palumbi ST et al (2006) Science 314:787–790
Acknowledgment
The authors wish to acknowledge the following individuals who have contributed to this study: Suresh Sookbir, Neal O’Connor, Lamani Patino, Jonathan Gomez, Sarah Hosein, Jillian St. Bernard, Kahlil Hassanali, and Adam Jehu. The study was funded by the Institute of Marine Affairs, Trinidad and Tobago.
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Juman, R.A., Ramsewak, D. Land cover changes in the Caroni Swamp Ramsar Site, Trinidad (1942 and 2007): implications for management. J Coast Conserv 17, 133–141 (2013). https://doi.org/10.1007/s11852-012-0225-0
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DOI: https://doi.org/10.1007/s11852-012-0225-0