THE VASCULAR FLORA OF THE NORTH CENTRAL TEXAS WALNUT FORMATION

Political boundaries frequently define local floras. This floristic project takes a geological approach inspired by Dalea reverchonii (Comanche Peak prairie clover), which is primarily endemic to glades of the Walnut Formation. The Cretaceous Walnut Formation (Comanchean) lies on the drier western e...

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Bibliographische Detailangaben
Veröffentlicht in:	Journal of the Botanical Research Institute of Texas. - Botanical Research Institute of Texas. - 6(2012), 2, Seite 725-752
1. Verfasser:	Swadek, Rebecca K. (VerfasserIn)
Weitere Verfasser:	Burgess, Tony L.
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2012
Zugriff auf das übergeordnete Werk:	Journal of the Botanical Research Institute of Texas
Schlagworte:	Physical sciences Biological sciences


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100	1		\|a Swadek, Rebecca K. \|e verfasserin \|4 aut
245	1	4	\|a THE VASCULAR FLORA OF THE NORTH CENTRAL TEXAS WALNUT FORMATION
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520			\|a Political boundaries frequently define local floras. This floristic project takes a geological approach inspired by Dalea reverchonii (Comanche Peak prairie clover), which is primarily endemic to glades of the Walnut Formation. The Cretaceous Walnut Formation (Comanchean) lies on the drier western edge of the Fort Worth Prairie in North Central Texas. Its shallow limestone soils, formed from alternating layers of hard limestone and clayey marl, support a variety of habitats. Glades of barren limestone typically appear on ridgetops, grassland savannas form on eroding hillslopes, and seeps support diverse hyperseasonal vegetation. Vouchers were collected from January 2010 to June 2012 resulting in 469 infraspecific taxa, 453 species in 286 genera and 79 families. The richest five plant families are Asteraceae (74 taxa), Poaceae (73), Fabaceae (34), Euphorbiaceae (18), and Cyperaceae (17). There are 61 introduced species. Results indicate floristic affinities to limestone cedar glades of the Southeastern United States, the Edwards Plateau of Central Texas, and calcareous Apacherian Savannas of Southwestern North America. Las fronteras políticas definen frecuentemente las floras locales. Este proyecto florístico toma una aproximación geológica inspirada en Dalea reverchonii (trébol de la paradera de Comanche Peak), que es primariamente endémico de los claros de la formación Walnut. La formación Cretácica Walnut (Comancheana) está en el borde oeste más seco de la pradera de Fort Worth en el Norte-Centro de Texas. Sus suelos calcáreos poco profundos, formados por capas alternas de calizas duras y margas arcillosas, soportan una variedad de habitats. Aparecen típicos claros de calizas estériles en las cumbres, sabanas herbáceas en las laderas erosionadas, y filtraciones soportan una vegetación hiperestacional diversa. Se colectaron testigos des enero de 2010 a junio de 2012 dando como resultado 469 taxa infraspecíficos, 453 especies in 286 géneros y 79 familias. Las cinco familias de plantas más ricas son Asteraceae (74 taxa), Poaceae (73), Fabaceae (34), Euphorbiaceae (18), y Cyperaceae (17). Hay 47 especies exóticas. Los resultados indican afinidades florísticas con las calizas de cedar glades del sureste de los Estados Unidos, el Edwards Plateau del centro de Texas, y sabanas calcáreas Apacherianas del suroeste de Norte América.
540			\|a 2012 Botanical Research Institute of Texas (BRIT)
650		4	\|a Physical sciences \|x Earth sciences \|x Geography \|x Geomorphology \|x Rocks \|x Sedimentary rocks \|x Limestones
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Biocenosis \|x Plant communities \|x Forests \|x Glades
650		4	\|a Biological sciences \|x Ecology \|x Ecosystems \|x Biomes \|x Grasslands \|x Prairies
650		4	\|a Biological sciences \|x Agriculture \|x Agricultural sciences \|x Agronomy \|x Soil science \|x Soils \|x Limestone soils
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant ecology \|x Vegetation
650		4	\|a Biological sciences \|x Agriculture \|x Agricultural sciences \|x Agronomy \|x Soil science \|x Edaphology \|x Soil ecology \|x Soil characteristics \|x Soil depth
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plants
650		4	\|a Biological sciences \|x Agriculture \|x Agricultural sciences \|x Agronomy \|x Soil science \|x Soils \|x Prairie soils
650		4	\|a Biological sciences \|x Ecology \|x Population ecology \|x Synecology \|x Habitats
650		4	\|a Biological sciences \|x Biology \|x Biological taxonomies \|x Flora \|x FLORISTICS, ECOLOGY, AND CONSERVATION
655		4	\|a research-article
700	1		\|a Burgess, Tony L. \|e verfasserin \|4 aut
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773	1	8	\|g volume:6 \|g year:2012 \|g number:2 \|g pages:725-752
856	4	0	\|u https://www.jstor.org/stable/41972462 \|3 Volltext
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