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Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces (open access)

Biodiversity of Dragonflies and Damselflies (Odonata) of the South-Central Nearctic and Adjacent Neotropical Biotic Provinces

The south-central United States serves as an important biogeographical link and dispersal corridor between Nearctic and Neotropical elements of western hemisphere odonate faunas. Its species are reasonably well known because of substantial collections, but there has been no concerted effort to document the extent of biodiversity and possible geographic affinities of dragonflies and damselflies of this region. The recent discoveries of Argia leonorae Garrison, Gomphus gonzalezi Dunkle and Erpetogomphus heterodon Garrison from southern and western Texas and northern Mexico suggest that Odonata species remain to be discovered in this area, particularly from far south Texas and northern Mexico. I have documented a total of 12,515 records of Odonata found in 408 counties within the south-central U.S. A total of 73 species of damselflies and 160 species of dragonflies was revealed in the region. The 233 (197 in Texas) Odonata species are distributed among 10 families and 66 genera. Illustrated family, generic, and species-level keys are provided. Since the beginning of this work in the Fall of 1993, one species has been added each to the Louisiana and Oklahoma faunas, and 12 species have been added, previously unreported from Texas, including four new to the U.S. The area of highest Odonata …
Date: May 1999
Creator: Abbott, John C.
System: The UNT Digital Library
Effects of English and Bilingual Storybook Reading and Reenactment on the Retelling Abilities of Preschool Children (open access)

Effects of English and Bilingual Storybook Reading and Reenactment on the Retelling Abilities of Preschool Children

The purpose of this study was to investigate the story retelling abilities of preschool children who have experienced storybook reading and storybook reenactment bilingually, in English and Spanish, and preschool children who have experienced storybook reading and storybook reenactment in English only. This is a clinical case study employing both quantitative and qualitative measures comparing four treatment groups. Three evaluation instruments were developed by the researcher and used for posttesting; a story comprehension test, a story retelling guidesheet/scoresheet, and a storybook literacy response evaluation. In addition, participant observation and teacher interviews were used to gather qualitative data regarding learning center extensions of the target text and teacher beliefs and practices about the use of storybooks. The findings from this study show that scores for children who experienced storybook reading and storybook reenactment were significantly better on both the story retelling and story comprehension measures. In addition, a larger proportion of children who experienced storybook reading and reenactment were found to perform at the second level of literacy response on the Levels of Literacy evaluation. No differences were found in relationship to the language used on any of the dependent measures. Findings fromqualitative data showed that children were involved in limited …
Date: December 1996
Creator: Gutierrez-Gomez, Catalina
System: The UNT Digital Library