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Showing 1 to 16 of 16 for “"quantitative sampling"”.
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An Evaluation of Three Techniques for the Quantitative Sampling of Marsh Invertebrates
… develop, compare, and evaluate three methods for quantitatively sampling the invertebrate standing crop on the water surface of dense cattail (Typha latifolia) marshes at 19 sites around the periphery of Caliche Lake in Grant County, Washington.
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Comparison of Quantitative and Semi-Quantitative Assessments of Benthic Macroinvertebrate Community Response to Elevated Salinity in central Appalachian Coalfield Streams
… rely on Rapid Bioassessment Protocols with semi-quantitative sampling to characterize benthic macroinvertebrate community response to increased salinity caused by surface coal mining. These protocols require subsampling procedures and identification of fixed numbers of individuals regardless of …
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A Quantitative Survey of the Freshwater Mussel Fauna in the Powell River of Virginia and Tennessee, and Life History Study of Two Endangered Species, Quadrula sparsa and Quadrula intermedia
Qualitative and quantitative sampling was conducted along a 165 km reach of the river from PRKM 269.4 near Dryden, VA to PRKM 104.8 near Harrogate, TN. Twenty-nine species were observed throughout the entire river, and the highest diversity of 23 species was collected at PRKM 152.6. Mussel …
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Challenges facing the teaching and learning of accounting as a subject in Vhembe East District in Limpopo Province
… method research design which is a combination of quantitative and qualitative approaches was used. Questionnaire and interview schedules were used to collect data from the participants. The population of the study comprise of Accounting subject advisors, principals, heads of departments and …
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Studies of Benthic Macroinvertebrates in Western Virginia Streams as Related to the Implementation of Rapid Bioassessment Techniques
… and (2) the accuracy of standardized qualitative sampling. Except for the Central Appalachians ecoregion, there was little or no correspondence of benthic macroinvertebrate distribution with the ecoregions or subregions of western Virginia. I found that it was more accurate to rearrange the …
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The Corticolous Crustose and Microfoliose Lichens of Northeastern Brazil – Diversity, Ecology, and Conservation
… variation. Finally, three different sampling methods were considered on the present study and their efficiency for more accurate estimation of tropical microlichen diversity was tested. The analysis showed that opportunistic sampling fails to detect rare, inconspicuous, sterile, …
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The impact of World Financial Crisis on Hotel Industry in Zanzibar
… research approach was qualitative and quantitative, sampling procedure was simple random and purposive sampling, 21 respondents were contacted. Data collection methods used were documentary review, self-administered questionnaires with respective interviews. Findings of this study …
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Aspects of the biology of fish populations from the Medway Estuary, based on power station intake sampling with special reference to parasitism and pollution
… to evaluating the influence of man's activities. Quantitative sampling was carried out monthly between 1973 and 1975 from the intake screens of Kingsnorth Power Station. Trawl samples were also taken as a check for selectivity. During the study over 46,000 fish, divided between 59 species, were …
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Environmental and behavioral factors associated with the infestation of vineyards by larvae of grape root borer
… pupal exuviae counts, indicating that exuviae sampling is most appropriate to assess infestations. Exuviae sampling in Virginia vineyards revealed infestations that ranged from light to very heavy. Eighteen biotic and abiotic variables were measured and used in analyses that assessed their …
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An evaluation of SASS (South African scoring system) as a tool for the rapid bioassessment of water quality
… of two methods of biological assessment, namely quantitative box-sampling and SASS. The ability of each method to differentiate between these sites was determined. The more general application of SASS in the south-western Cape was examined at forty nine sites and potential problems associated …
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ECOLOGY OF ROCKY SUBTIDAL COMMUNITIES: THE ROLE OF MODIOLUS MODIOLUS (L) AND THE INFLUENCE OF DISTURBANCE, COMPETITION, AND MUTUALISM
… of the horse mussel Modiolus modiolus (L.). Quantitative sampling and multivariate analysis revealed 3 communities: (1) Modiolus community; (2) 30 m community of species with highest densities outside mussel beds; (3) 8-18 m community of species with maximal densities outside mussel …
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Benthic macroinvertebrate community structure responses to multiple stressors in mining-influenced streams of central Appalachia USA
… of streams and are frequently sampled using semi-quantitative methods that preclude calculations of areal densities. Studies of central Appalachian mining impacts in non-acidic streams often focus on biotic effects of salinity, but other types of pollution and habitat alteration can potentially …
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Distributional analysis of the freshwater mussel fauna of the Tennessee River system, with special reference to possible limiting effects of siltation
… the maximum number of species niches available. Quantitative sampling reveals characteristic patterns of species dominance. Changes in species dominance and age class structure provide a better basis for evaluating changes over time than do species composition or diversity alone. Mussel density …
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The influence of epiphytes on arthropods in the tropical forest canopy
… epiphyte-free spaces within the same tree crown. Quantitative sampling of the arthropods inhabiting three different epiphyte species provided compelling evidence for the specificity of epiphyte-associated faunas (Chapter 4). Epiphytes proved to be microhabitats for a diverse and numerous arthropod …
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Hubungan sense of humor dengan kepercayaan diri penyiar radio di Kota Malang
… dengan teknik pengambilan sampel yaitu puposive sampling berjumlah 19 orang diantaranya penyiar Radio Mitra Adi Swara, RRI Pro 1 saluran budaya dan pendidikan, Radio Chakra Buana. Proses pengambilan data menggunakan metode observasi, wawancara, skala dan metode dokumentasi. Sedangkan untuk …
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Struktur komunitas tumbuhan bawah pada tegakan terbuka dan tertutup serta pemanfaatannya oleh masyarakat di Taman Hutan Raya (TAHURA) R. Soerjo Cangar Kota Batu
… and closed stands. This research is descriptive quantitative, sampling research belt transect method. Environmental factors were observed, among others, light, altitude and temperature. Data were analyzed by calculating the density, frequency, dominance and IVI. For deployment patterns are …