This study is aimed to investigate the species composition and seasonal distribution of siphonophores in relation to water temperature and salinity in the coastal waters, southwestern Taiwan, from June 2001 to October 2002. In total, 39 siphonophoran species belonging to 17 genera and 5 families were identified, with the mean total abundance of 5301¡Ó8525 ind./100m3. The numerical abundance of siphonophores showed apparent seasonal change, higher in spring and autumn and lower in winter. The five most dominant species were Chelophyes contorta, Lensia subtiloides, Sulculeolaria chuni, Bassia bassensis and Diphyes bojani, and contributed to 80.2% of the total abundance of siphonophores. The mean abundance and species number of siphonophores were higher in surface water than in 0~100m oblique tow. The siphonophores found in the present study mostly belonged to the widespread oceanic species or widespread coastal species, and the dominant species were similar to those in the South China Sea. The dominant siphonophoran species exhibited apparently seasonal succession. Different dominant species showed different seasonal distribution patterns and percentage composition of sexual and asexual generations in total population. The total abundance of siphonophore showed significant (p>0.05) correlation with water salinity, but not temperature. The abundance of Chelophyes contorta, Lensia subtiloides, Abylopsis eschscholtzi and Diphyes chamissonis were significantly correlated to water temperature, but the abundance of Sulculeolaria chuni and Abylopsis tetragona showed significantly negative correlations with temperature. The abundance of Chelophyes contorta, Lensia subtiloides and Abylopsis eschscholtzi were significantly negatively correlated to salinity, but Sulculeolaria chuni showed significantly positive correlation with salinity.

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This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

Thesis (M.S.)--Montana State University--Bozeman, 2005. / Title from PDF t.p. (viewed on June 10, 2006). Chairperson, Graduate Committee: Richard J. Aspinall. Includes bibliographical references (p. 93-105).

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[Truncated abstract] Annual grasses have colonised a diverse range of environments in southern Australia. The “Silvergrasses” of the genus Vulpia are excellent examples being widely distributed, are prevalent weeds of agriculture and have had a long history to naturalise on the continent. Research was undertaken on Vulpia populations to identify if naturalising species have reproductive traits that provide propagules with the best chances of success. Furthermore, research aimed at investigating if these traits vary between species and their populations and how this variability related to the environment. A herbarium and field study was undertaken to establish what Vulpia species occur in SW Australia and to investigate environmental factors affecting their distribution. 169 herbaria specimens was examined and a botanical field survey of 189 sites was carried out in September 1998. Four species occur in the region: V. fasciculata, V. muralis, V. bromoides and two variants of V. myuros (V. myuros var. megalura and V. myuros var. myuros). V. bromoides and V. myuros were introduced early into the region while V. fasciculata and V. muralis more recently. It is plausible that Vulpia invaded the region via early seaport settlements and was spread by agricultural expansion. 96% of field sites contained V. myuros var. myuros, 79% V. myuros var. megalura, 50% V. bromoides, 6% V. fasciculata and 6% contained V. muralis. 90% of sites contained a mix of species and 9% of sites contained pure species stands. V. myuros var. myuros is the most widespread species and dominant form of V. myuros. It is found from high rainfall regions through to arid locations occurring on mostly light textured low fertility soils. V. muralis and V. fasciculata occur infrequently with the former widely dispersed and the later occurring predominantly on sands. V. bromoides occurs extensively in high rainfall regions but rarely extends to locations receiving less than 400-450mm annual rainfall and northward above 30°00’ latitude. It is predominantly on light to loamy textured soils that are fertile and acid. The most common species V. myuros and V. bromoides often coexist within sites but the dominance of one over the other is strongly correlated with growing season length and false break frequency. V. bromoides is positively correlated to growing season length and V. myuros is negatively related. The distribution of Vulpia species is strongly influenced by climate and soils. Variability in distribution is a reflection of the ecological differentiation between species to colonise different environments

Call number: LD2668 .T4 1978 S34 / Master of Science

This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.

The purposes of this study were (a) to analyze whether any significant differences exist in students' satisfaction among the 11 composite scales/satisfaction measures of the SSI (retention programs); (b) to determine whether significant differences exist in satisfaction among students of the institution based on their demographic characteristics of gender, age, ethnicity, class load, and employment; and (c) to record findings, draw conclusions, and make recommendations from the study. The research was conducted using a questionnaire, The Student Satisfaction Inventory (SSI), developed by Juillreat and Schreiner in 1994. The instrument measures, among other matters, students' perceptions and satisfaction. The population of the study comprised all students at the institution during the 1996-1997 school year. A total of 312 students was sampled, with 182 (58%) returns received. Statistical treatments used to analyze the collected data included frequencies, percentages, means, standard deviation, multiple analysis of variances (MANOVA), one-way analysis of variance (ANOVA), and Tukey's Post Hoc t-test for multiple comparison.