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- Title
SPECIES RICHNESS AND SOIL REACTION IN A NORTHEASTERN OKLAHOMA LANDSCAPE.
- Authors
Palmer, Michael W.; Arévalo, José Ramón; Del Carmen Cobo, María; Earls, Peter G.
- Abstract
Abstract: Although the relationship between soil reaction and species richness is of great theoretical interest, and has been relatively well studied in temperate latitudes, the southern Great Plains of North America have not received much attention. We analyzed the relationship between species richness and measures of soil reaction (pH, cation exchange capacity, Ca) in 418 10 m x 10 m samples (with nested smaller quadrats) in the Tallgrass Prairie Preserve, Osage County, Oklahoma. We found a negative correlation of richness with soil reaction that is consistent across scales and years in grasslands, with soil calcium exhibiting the strongest relationships. The relationship in woodlands is weakly positive. The proportion of (primarily Eurasian) exotic species is positively related to calcium concentrations in both woodlands and grasslands. Although our results are not inconsistent with species pool hypotheses, critical tests of such hypotheses are operationally difficult.
- Subjects
TALLGRASS Prairie National Preserve (Okla.); UNITED States; SPECIES pools; BIODIVERSITY; SPECIES; CALCIUM in soils; CALCIUM; GRASSLANDS
- Publication
Folia Geobotanica, 2003, Vol 38, Issue 4, p381
- ISSN
1211-9520
- Publication type
Article
- DOI
10.1007/BF02803246