Life Sciences Commons^™

The Terrestrial Flora Of South Padre Island, Texas, Robert I. Lonard, Frank W. Judd

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The primary aim of this work is to enable the user to identify the flowering plants of South Padre Island; however, it should be useful for identification of plants on other Texas barrier islands and on the Mexican barrier islands. We hope that the keys will aid teachers, students, coastal zone managers, and individuals conducting environmental impact assessments.

Agriculture News Release - 1980-12-11, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Phytogeography Of South Padre Island, Texas, Robert I. Lonard, Frank W. Judd

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The phytogeographic affinities of the native flora of South Padre Island, Texas, are analyzed and the probable dispersal agent(s) for each species identified. The native flora consists of 99 species and 44% of the species also occur on the adjacent Texas mainland; 28% of the native species have tropical affinities. Only three species have probably dispersed from the island to the mainland. Two species may be endemic to Padre Island and the Tamaulipan barrier islands. Most of the tropical species have reached the island by oceanic drift, but birds are the most important dispersal agent for the native species. Man …

Agriculture News Release - 1980-10-01, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Cellulase Activities Of Soil Fungi, Jacobo Ortega

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The cellulase activities of 8 isolates of fungi obtained from agricultural soils of Hidalgo County, TX were investigated by measuring the changes in the viscosity of a buffered solution of carboxymethylcellulose (CMC), produced by the fluids obtained from liquid cultures of these isolates. The change in the viscosity of the reaction mixture incubated at constant temperature (30 C) was measured with Cannon-Fenske routine viscometers. A buffered cellulase solution was used as a control.

Due to the variability that existed among the isolates investigated, it was possible to select active producers of cellulase with the method followed in this investigation. The …

Agriculture News Release - 1980-06-24, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1980-06-04, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1980-05-07, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1980-05-02, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

The Ferns Of The Rancho Del Cielo Region, Lawrence Victor Lof

Theses and Dissertations - UTB/UTPA

This paper contains a key to the fifty-seven fern species found on the eastern slope of the Sierra de Guatemala in southern Tamaulipas Mexico. Included are descriptions and drawings of each of the species In addition, the climate and its relation to the unique flora of the area is discussed.

Agriculture News Release - 1980-04-09, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1980-04-07, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-12-05, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-10-22, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-10-18, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-10-03, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-09-10, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-08-21, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-06-12, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

A Vegetational Analysis Of A Tropical Cloud Forest In Southern Tamaulipas, Mexico, Robert I. Lonard, R. G. Ross

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The vegetation of a tropical cloud forest in northern Mexico was analyzed by the point- quarter and line intercept methods to determine the relative density, relative dominance, relative frequency and importance values of the woody and herbaceous species. The flora of the study site, near Gomez Farias, Tamaulipas, Mexico, represents a unique mixture of temperate and tropical taxa. Based on importance values, the upper woody stratum was dominated by oak (Quercus sartorii Liebm.), sweet gum (Liquidambar styraciflua L.), Turpinia occidentalis (Swartz) Don and Clethra macrophylla Mart, and Gal. The lower woody stratum consisted largely of Solarium nudum H.B.K. and Ampelopsis …

Agriculture News Release - 1979-05-29, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-05-04, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-05-03, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Flowering Vegetation Of South Texas As An Aggregation Site For Screwworm Flies, Cochliomyia Hominivorax (Coquerel), Geral Lenford Long

Theses and Dissertations - UTB/UTPA

Flowering vegetation was investigated to determine its potential as an aggregation site for the mating of screwworm flies, Cochliomyia hominivorax (Coquerel). Fly activity was observed at vegetation on a typical south Texas shrub community. Noted were the species of vegetation present and the phenology of their flowering. Screwworm flies were found to be attracted to specific species of brush; however, in the absence of the most attractive species, the flies responded to secondary species. Both feeding and mating behavior were observed on vegetation.

Olfaction and visual mechanisms of aggregation were investigated. Results from an olfactometer showed the attractancy of some …

Agriculture News Release - 1979-04-19, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-04-18, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Agriculture News Release - 1979-02-01, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.

Annotated Checklist Of The Flowering Plants Of South Padre Island, Texas, Robert I. Lonard, Frank W. Judd, Sammie L. Sides

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

This study catalogues the flowering plants of South Padre Island, Texas. A total of 207 species in 47 families is listed. The abundance and ecological distribution of each taxon are noted. Comparisons are made with the flora of Mustang Island, Texas. Ninety-three species, 96 genera and 36 families are common to both islands. Three families, Compositae, Gramineae and Leguminosae, contain large shares of the total number of species on both islands. Apparently, much of the floral diversity is due to the presence of a large number of species that are represented by small populations.

Gold In The Gulf: A History Of The Rio Grande Valley Shrimp Industry, Thomas M. Blackwell

Theses and Dissertations - UTB/UTPA

Competition over dwindling fishery stocks has become acute. Shrimp in the Gulf of Mexico is part of that competition. Trawling operations shifted to Brownsville. A dispute between the newly arrived louisiana shrimpers and Texas operators drove many of the newcomers south to the Mexican coastline. This led almost inevitably to a conflict with Mexico. That it was almost inevitable was also due to the fact that the two nations had differing interpretations of territorial limits.

The confrontations themselves were often full of adventure with charges, counter-charges, and sometimes bullets hurled through the air. Because of this nation's own past actions, …

Agriculture News Release - 1977-09-23, United States. Congress. House. Committee On Agriculture, E. De La Garza

Kika de la Garza Congressional Papers - Agriculture Committee News Releases

No abstract provided.