Monodominance is an ecological condition in which more than 60\% of the tree canopy comprises a single species of tree.Peh, Kelvin S.-H.; Lewis, Simon L.; Lloyd, Jon (July 2011). "Mechanisms of monodominance in diverse tropical tree-dominated systems". Journal of Ecology (British Ecological Society) 99 (4): 891–898.doi:10.1111/j.1365-2745.2011.01827.x.-Prebble, Matthew; Kennedy, Jean; Southern, Wendy (2010). "Holocene lowland vegetation change and human ecology in Manus Province, Papua New Guinea". In Haberle, S.; Stevenson, J.; Prebble, M. Altered Ecologies: Fire, Climate and Human Influence on Terrestrial Landscapes. Terra Australis Series 32. ANU E Press. .  Although monodominance is studied across different regions, most research focuses on the many prominent species in tropical forests. Connel and Lowman, originally called it single-dominance.Connel, Joseph H.; Lowman, Margaret D. (1989). "Low diversity tropical rainforests: Some possible mechanisms for their existence.". The American Naturalist 134: 88–119. Conventional explanations of biodiversity in tropical forests in the decades prior to Connel and Lowman's work either ignored monodominance entirely or predicted that it would not exist.Torti, Sylvia D.; Coley, Phyllis D.; Kursar, Thomas A. (February 2001). "Causes and Consequences of Monodominance in Tropical Lowland Forests". The American Naturalist 157 (2): 141–153. doi:10.1086/318629. Examples  In tropical lowland forest environments, a minimum of 22 species from eight different families are known to create monodominant forests. Examples of persistent monodominance are seen in Africa, Central and South America, and Asia.Torti, Sylvia D.; Coley, Phyllis D. (June 1999). "Tropical Monodominance: A Preliminary Test of the Ectomycorrhizal Hypothesis". Biotropica (The Association for Tropical Biology and Conservation) 31 (2): 220–228.doi:10.1111/j.1744-7429.1999.tb00134.x. Dipterocarpaceae is one example of a plant family that is recognized as persistently dominant in Asia. The ectomycorrhizal tree Dicymbe corymbosa, found in central Guyana, creates wide ranges of monodominant forests containing more than 80\% of the canopy tree species.McGuire, Krista L. "Ectomycorrhizal Associations Function to Maintain Tropical Monodominance." Mycorrhizae: Sustainable Agriculture and Forestry. Z.A. Siddiqui, et al. Netherlands: Springer Science + Business Media B.V., 2008. 287-302. Print. Dominant plants in the Neotropics and Africa are usually in the family Leguminosae. The species Gilbertiodendron dewevrei, Cynometra alexandri, and Julbernardia seretii are pronounced as exclusive dominants in their individual forests in equatorial Africa.Hart, T. B., Hart, J. A., & Murphy, P. G. (1989). Monodominant and species-rich forests of the humid tropics: causes for their co-occurrence. American Naturalist, 613-633. G. dewevrei dominated forests are more widespread on the highlands adjacent to the central basin of the Zaire River. This species in the Ituri forest forms monodominant stands that occupy more than 90\% of the canopy trees   .
Monodominance is an ecological condition in which more than 60\% of the tree canopy comprises a single species of tree.Peh, Kelvin S.-H.; Lewis, Simon L.; Lloyd, Jon (July 2011). "Mechanisms of monodominance in diverse tropical tree-dominated systems". Journal of Ecology (British Ecological Society) 99 (4): 891–898.doi:10.1111/j.1365-2745.2011.01827.x.-Prebble, Matthew; Kennedy, Jean; Southern, Wendy (2010). "Holocene lowland vegetation change and human ecology in Manus Province, Papua New Guinea". In Haberle, S.; Stevenson, J.; Prebble, M. Altered Ecologies: Fire, Climate and Human Influence on Terrestrial Landscapes. Terra Australis Series 32. ANU E Press. . Monodominant forests are quite common under conditions of extra-tropical climate types. Although monodominance is studied across different regions, most research focuses on the many prominent species in tropical forests. Connel and Lowman, originally called it single-dominance.Connel, Joseph H.; Lowman, Margaret D. (1989). "Low diversity tropical rainforests: Some possible mechanisms for their existence.". The American Naturalist 134: 88–119. Conventional explanations of biodiversity in tropical forests in the decades prior to Connel and Lowman's work either ignored monodominance entirely or predicted that it would not exist.Torti, Sylvia D.; Coley, Phyllis D.; Kursar, Thomas A. (February 2001). "Causes and Consequences of Monodominance in Tropical Lowland Forests". The American Naturalist 157 (2): 141–153. doi:10.1086/318629. Examples Examples of monodominant forests under temperate climate conditions include widespread boreal coniferous forests of the northern hemisphere, temperate Fagus grandifolia (American beech) forests in southern New England, Tsuga canadensis (Eastern hemlock) forests in northeastern United States, Populus tremuloides (quaking aspen) forests in mountainous regions of the western United States, Fagus sylvatica (European beech) forests in central Europe, Fagus crenata (Japanese beech) forests in Japan, or high-altitude monodominant Nothofagus menziesii (silver beech) and Nothofagus solandri (mountain beech) forests in New Zealand. In tropical lowland forest environments, a minimum of 22 species from eight different families are known to create monodominant forests. Examples of persistent monodominance are seen in Africa, Central and South America, and Asia.Torti, Sylvia D.; Coley, Phyllis D. (June 1999). "Tropical Monodominance: A Preliminary Test of the Ectomycorrhizal Hypothesis". Biotropica (The Association for Tropical Biology and Conservation) 31 (2): 220–228.doi:10.1111/j.1744-7429.1999.tb00134.x. Dipterocarpaceae is one example of a plant family that is recognized as persistently dominant in Asia. The ectomycorrhizal tree Dicymbe corymbosa, found in central Guyana, creates wide ranges of monodominant forests containing more than 80\% of the canopy tree species.McGuire, Krista L. "Ectomycorrhizal Associations Function to Maintain Tropical Monodominance." Mycorrhizae: Sustainable Agriculture and Forestry. Z.A. Siddiqui, et al. Netherlands: Springer Science + Business Media B.V., 2008. 287-302. Print. Dominant plants in the Neotropics and Africa are usually in the family Leguminosae. The species Gilbertiodendron dewevrei, Cynometra alexandri, and Julbernardia seretii are pronounced as exclusive dominants in their individual forests in equatorial Africa.Hart, T. B., Hart, J. A., & Murphy, P. G. (1989). Monodominant and species-rich forests of the humid tropics: causes for their co-occurrence. American Naturalist, 613-633. G. dewevrei dominated forests are more widespread on the highlands adjacent to the central basin of the Zaire River. This species in the Ituri forest forms monodominant stands that occupy more than 90\% of the canopy trees . Monodominance often occurs also on oceanic islands in the tropics.Mueller-Dombois, D., Fosberg, F. R., (1998). Vegetation of the tropical Pacific Islands. Springer-Verlag New York, Inc. Examples are Ochrosia oppositifolia forests on the Marshall Islands, Barringtonia asiatica forests on the Samoan Islands, Pisonia grandis forests on Rose Atoll, Palaquium hornei forests on Fiji Islands, Leucaena leucocephala forests on Nuka Hiva and Ua Pou of the Marquesas Islands and on Vanuatu, and Metrosideros polymorpha forests on the Hawaiian Islands .
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Monodominant forests are quite common under conditions of extra-tropical climate types.
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Examples of monodominant forests under temperate climate conditions include widespread boreal coniferous forests of the northern hemisphere, temperate Fagus grandifolia (American beech) forests in southern New England, Tsuga canadensis (Eastern hemlock) forests in northeastern United States, Populus tremuloides (quaking aspen) forests in mountainous regions of the western United States, Fagus sylvatica (European beech) forests in central Europe, Fagus crenata (Japanese beech) forests in Japan, or high-altitude monodominant Nothofagus menziesii (silver beech) and Nothofagus solandri (mountain beech) forests in New Zealand.
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Monodominance often occurs also on oceanic islands in the tropics.Mueller-Dombois, D., Fosberg, F. R., (1998). Vegetation of the tropical Pacific Islands. Springer-Verlag New York, Inc. Examples are Ochrosia oppositifolia forests on the Marshall Islands, Barringtonia asiatica forests on the Samoan Islands, Pisonia grandis forests on Rose Atoll, Palaquium hornei forests on Fiji Islands, Leucaena leucocephala forests on Nuka Hiva and Ua Pou of the Marquesas Islands and on Vanuatu, and Metrosideros polymorpha forests on the Hawaiian Islands