Abstract
Our estimates indicate that about 30% of the seven million square kilometers that make up the Amazon basin comply with international criteria for wetland definition. Most countries sharing the Amazon basin have signed the Ramsar Convention on Wetlands of International Importance but still lack complete wetland inventories, classification systems, and management plans. Amazonian wetlands vary considerably with respect to hydrology, water and soil fertility, vegetation cover, diversity of plant and animal species, and primary and secondary productivity. They also play important roles in the hydrology and biogeochemical cycles of the basin. Here, we propose a classification system for large Amazonian wetland types based on climatic, hydrological, hydrochemical, and botanical parameters. The classification scheme divides natural wetlands into one group with rather stable water levels and another with oscillating water levels. These groups are subdivided into 14 major wetland types. The types are characterized and their distributions and extents are mapped.
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Appendix
Appendix
A glossary of indigenous, Portuguese and Spanish terms
- Buritizal :
-
Palm swamp dominated by buriti (Mauritia flexuosa)
- Campina (Caatinga baixa, Bana, Chamizal, Muri scrub) :
-
Low shrub and tree savanna areas on podzols in the Amazon rainforest. Some areas are periodically waterlogged or shallowly flooded (edaphic hydromorphic savannas)
- Campinarana (Caatinga alta, Varillal, Wallaba) :
-
Low stature, thin-trunked forest areas on podzols in the Amazon rainforest, sometimes periodically waterlogged or shallowly flooded (edaphic hydromorphic savannas covered by stunted forest)
- Campo úmido :
-
Wetland in the cerrado covered by grasses, sedges, and herbs
- Cerrado :
-
Brazilian savanna. This general term includes different physiognomies from open grasslands and shrub lands to low dry forests (cerradão)
- Igapó :
-
Floodplain of blackwater rivers
- Paleo-várzea :
-
Ancient whitewater river sediments that were deposited during former interglacial periods and are impoverished in nutrients
- Tepui :
-
Table mountain on the Guiana shield
- Terra firme :
-
Upland, covered by never-flooded Amazonian rainforest
- Várzea :
-
Floodplain of recent whitewater rivers
- Vereda :
-
Wetland adjacent to streams in the cerrado and covered by shrubs, buriti palms, grasses, sedges, and herbs
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Junk, W.J., Piedade, M.T.F., Schöngart, J. et al. A Classification of Major Naturally-Occurring Amazonian Lowland Wetlands. Wetlands 31, 623–640 (2011). https://doi.org/10.1007/s13157-011-0190-7
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DOI: https://doi.org/10.1007/s13157-011-0190-7