MODELING THE DISTRIBUTION OF THE DWARF PALMETTO (SABAL MINOR; ARECACEAE) IN McCURTAIN COUNTY, OKLAHOMA

The dwarf palmetto, Sabal minor, reaches the northwestern limit of its geographic range in McCurtain County, Oklahoma, where it is critically imperiled. We determined that S. minor was more widespread than previously reported; 28 new localities were identified. Populations were associated positively...

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Bibliographische Detailangaben
Veröffentlicht in:The Southwestern Naturalist. - Southwestern Association of Naturalist. - 56(2011), 1, Seite 66-70
1. Verfasser: Butler, Christopher J. (VerfasserIn)
Weitere Verfasser: Curtis, Jennifer L., McBride, Kimberly, Arbour, David, Heck, Berlin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The Southwestern Naturalist
Schlagworte:Biological sciences Physical sciences Mathematics Health sciences
Beschreibung
Zusammenfassung:The dwarf palmetto, Sabal minor, reaches the northwestern limit of its geographic range in McCurtain County, Oklahoma, where it is critically imperiled. We determined that S. minor was more widespread than previously reported; 28 new localities were identified. Populations were associated positively with average annual minimum temperatures (i.e., plants were in the warmest parts of the county), negatively associated with elevation, and the species primarily occurred on silty clay soils. Although S. minor was common in a few areas near Red Slough Wildlife Management Area, it generally was uncommon and typically represented by only a few individuals. Ecological Niche Factor Analysis projected that suitable habitat was concentrated in southeastern McCurtain County, but that potentially suitable habitat was present throughout much of the county. El palmeto enano, Sabal minor, llega al límite noroeste de su distribución geográfica en el condado de McCurtain en Oklahoma, donde está críticamente en peligro. Encontramos que S. minor estuvo más ampliamente distribuido que lo informado anteriormente, con 28 nuevas localidades identificadas. Poblaciones se asociaron positivamente con la media temperatura mínima anual (es decir, las plantas se encontraron en la parte más cálida del condado) y negativamente con la altura, y se encontraron principalmente en suelos de arcilla limosa. Aunque S. minor fue común en algunas zonas cercanas a Red Slough Wildlife Management Area, fue en general poco frecuente y normalmente fue representado por pocos individuos. Un análisis de factores del nicho ecológico concluyó que el hábitat adecuado se concentró en el sureste del condado de McCurtain, pero que más hábitat potencialmente adecuado estuvo presente en mucho del condado.
ISSN:19436262