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Thematische Bibliographien / Indicators (biology) / Dissertationen

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Dissertationen zum Thema „Indicators (biology)“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 29. Juli 2024

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1

Call, Erynn. "River birds as indicators of change in riverine ecosystems." Thesis, The University of Maine, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3663177.

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<p> River-associated birds may be valuable indicators of environmental change in riverine ecosystems because they are predators of fishes and therefore often top predators in the aquatic food web. To evaluate the likely scope of one form of change - river restoration through dam removal and the expected return of abundant diadromous fish prey - we: 1) developed an appropriate river bird survey protocol; 2) documented the relative importance of sea-run fish in the diet of four river bird species, bald eagle (<i>Haliaeetus leucocephalus</i>), osprey (<i>Pandion haliaetus</i>), belted kingfisher

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2

Potts, Tavis William. "Sustainability indicators in marine capture fisheries." Connect to this title online, 2003. http://eprints.utas.edu.au/234/.

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3

Vinluan, Edlin Artuz. "Survival of Microbial Indicators In constructed Wetlands." Thesis, The University of Arizona, 1996. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0275_sip1_w.pdf&type=application/pdf.

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4

Giesen, Myra J. "Late prehistoric populations in the Ohio area : biological affinities and stress indicators /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487778663284737.

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5

Krutsinger, Roxane. "Evaluation of Grassland Restoration Success in Illinois Using Indicators of Ecosystem Function." Thesis, Southern Illinois University at Edwardsville, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1556741.

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<p> Grasslands are known to have been an important ecosystem in the Illinois landscape prior to European settlement. They have been severely impacted by changes in land use such as the conversion of native grasslands to agricultural land for the production of crops and livestock. Grassland ecosystems are known to provide several essential ecosystem functions that are important for the maintenance of the ecosystem and for human survival. Some of the ecosystem functions associated with grasslands include: nutrient cycling, carbon sequestration, and the cleansing of environmental contaminants fro

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6

Hennig, Helmke Friedrich-Karl Otto. "Baseline surveys and metal binding proteins as metal pollution indicators." Doctoral thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/22479.

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Bibliography: pages 304-309.<br>The field of metal determination as a part of pollution studies, has been critically examined and metal pollution may be defined in one simple statement: The presence of metal binding proteins confirms toxic metal pollution. It has been shown that current methods of metal determination in biological systems are of little use. This has been illustrated by both a review of metal concentration in Southern African coastal water, sediments and biotopes, and by a comparative baseline study of organisms from Gough Island and Mar ion Island. These showed that extrapolat

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7

Greffard, Marie-Helene. "Chironomids as indicators of environmental change in shallow lakes of northeastern United States." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86992.

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Despite the widespread use of chironomids in biomonitoring and paleoenvironmental research to infer environmental change, there is disagreement over the level of taxonomic resolution required for meaningful ecological interpretations. An objective of my thesis was to evaluate the differences in environmental inferences drawn at two different levels of taxonomic resolution. I found similar results between both levels of resolution with both live and sub-fossil datasets, but a number of taxa had different ecological preferences when examined at different resolutions. Another objective was to

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8

Ravenscroft, John Elmer. "Evaluation of survival and recovery characteristics of bifidobacteria as indicators of fecal pollution of water." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1613.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xi, 138 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 133-137).

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Erdner, Deana Lynn 1969. "Characterization of ferredoxin and flavodoxin as molecular indicators of iron limitation in marine eukaryotic phytoplankton." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/45490.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1997.<br>"Funding was provided by a Department of Energy Graduate Fellowship for Global Change and an Exploratory Research Agreement No. RP8021-05 from the Electric Power Research Institute."<br>Includes bibliographical references.<br>by Deana L. Erdner.<br>Ph.D.

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10

Van, Heerden Johannes Hendrik. "Peripheral blood mononuclear cells as non-invasive diagnostic indicators of stress-associated neural states." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/4347.

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Includes abstract.<br>Includes bibliographical references (leaves 155-181).<br>Researchers have demonstrated the ability to predict psychopathological states from human peripheral immune tissure transcriptional profiles, using microarrays. Although evidence in support of such an approach as a viable diagnostic avenue within psychiatric settings is accumulating, it remains to be demonstrated, in an animal model, that transcriptional changes in peripheral tissue targets are paralleled by specific gene expression changes in neural tissues.

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Gumbleton, Sarah. "Parasitic Indicators of Foraging Strategies in Wading Birds." Thesis, NSUWorks, 2018. https://nsuworks.nova.edu/occ_stuetd/484.

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Feeding ecology and trophic interactions of six species of wading birds were explored through a combined analysis of stable isotope profiles and endoparasite communities. Stable isotopes broadly characterize the feeding preferences and geographic information, while parasite communities reflect long-term trends in feeding ecology. Deceased birds were obtained from four South Florida wildlife rehabilitation organizations. Of the 81 birds dissected, 73 contained parasites. Parasites were predominately found within the gastrointestinal tract. Host and range extensions were noted for several parasi

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Flanagan, Neal E. "Comparing ecosystem structure and function of constructed and naturally occurring wetlands : empirical field indicators and theoretical indices /." Connect to resource, 1997. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1242846242.

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13

Öster, Mathias. "Biological diversity values in semi-natural grasslands : indicators, landscape context and restoration." Doctoral thesis, Stockholm University, Department of Botany, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1352.

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<p>Semi-natural grasslands, which are a declining and fragmented habitat in Europe, contain a high biodiversity, and are therefore of interest to conservation. This thesis examines how plant diversity is influenced by the landscape context, and how plant and fungal diversity can be targeted by practical conservation using indicator species and congruence between species groups. Reproduction and recruitment of the dioecious herb <i>Antennaria dioica </i>was also investigated, providing a case study on how fragmentation and habitat degradation may affect grassland plants.</p><p>Grassland size an

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14

Morse, David Linn. "Choline metabolites as diagnostic and therapeutic response indicators for breast cancer." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/280525.

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Choline metabolites are elevated in breast cancer, decrease in response to effective therapy and are detected non-invasively by magnetic resonance modalities. Decreases in choline metabolites occur early-on after initiation of treatment. There is potential for use of choline metabolites as non-invasive diagnostic and therapeutic response indicators. Choline metabolites are detected in vivo by magnetic resonance spectroscopy (MRS) in broad resonances which are composites of multiple compounds. Tumor extract studies have suggested that phosphocholine (PCho) is the component of these resonances

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Chu, King-hei Vincent. "Derivation of environmental quality guidelines based on tissue burden of toxic pollutants in the green lipped mussel Perna viridis /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37120281.

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16

Matusiewicz, Malgorzata. "Using biochemical indicators to determine the recommended dietary allowance (RDA) and body ascorbate compartmentalization for juvenile rainbow trout /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487857546387809.

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17

Kenkel, Julie Ann. "Identifying indicators of nitrogen pollution in vegetation and soils in the Grand Canyon region." Thesis, Northern Arizona University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1537787.

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<p>Anthropogenic contributions to global reactive N pools have more than doubled since the agricultural and industrial revolutions. Although N is an essential plant nutrient, enrichment of reactive N in air pollution can initiate a cascade of deleterious effects including increased smog and haze, ecosystem acidification, increased invasion of non-native grasses, and reduced biodiversity. However, the ecological impacts of N deposition in historically N-limited, semi-arid regions are not well understood. Here, I report the findings from field studies of automobile pollution in Grand Canyon Nati

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Oguma, Andrew Y. "Assessing the Effects of Low-Level Lead Contamination in Freshwater Sediments using Community-Level and Functional Indicators." Thesis, University of Louisiana at Lafayette, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3622951.

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<p> Anthropogenic lead releases into the environment often end up in aquatic sediments. Ecotoxicologists have historically studied biological effects of toxicants, such as lead, using individuals or populations as models in laboratory settings. It has recently been suggested that because such bottom-up approaches can be difficult to extrapolate to actual effects of contaminants in the field, more research should take a top-down perspective. My project therefore aimed to investigate sediment lead effects at the community level, as well as on ecosystem function. Studies were conducted in a lake

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19

Tucker, Sally Sue. "Morphological and physiological traits as indicators of drought tolerance in tallgrass prairie plants." Thesis, Kansas State University, 2010. http://hdl.handle.net/2097/4628.

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Master of Science<br>Department of Biology<br>Jesse B. Nippert<br>The Konza Prairie in northern Kansas, USA contains over 550 vascular plant species; of which, few have been closely studied. These species are adapted to environmental stress as imposed by variable temperature, precipitation, fire, and grazing. Understanding which plant traits relate to drought responses will allow us to both predict drought tolerance and potential future shifts in plant community composition from changes in local climate. Morphological and physiological measurements were taken on 121 species of herbaceous tallg

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Hoare, Annabel. "An evaluation of downland turf re-creation, using invertebrates as indicators." Thesis, Bournemouth University, 1999. http://eprints.bournemouth.ac.uk/402/.

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Seven study sites within the South Wessex Downs Environmentally Sensitive Area (SWD ESA) were used to evaluate re-created downland turf, a habitat created under one of the scheme management options. The novel habitat was compared to adjacent areas of established downland and to the edges of arable fields, by collecting vegetation data, and using invertebrates as indicators of habitat quality. The recreated downland sites were re-seeded 1 to 3 years before the study. The new habitat was influenced by adjacent established downland and calcicolous species were found colonising the: edges of the r

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21

Sanchez, Luis R. "Removal of bacterial indicators and pathogens from dairy wastewater by a treatment system." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284075.

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An integrated wastewater treatment facility at a dairy in Glendale, Arizona, consisting of an upper subsystem (solids separators, anaerobic lagoons, and aerobic ponds) and lower subsystem (wetland subsystems) has been proven to be successful in reducing indicator organisms and potential pathogens (bacteria, enteric viruses, and parasites). The collection sump of the new integrated system collects all dairy wastewater and pumps it to solid separators, which then flows by gravity to anaerobic lagoons and aerobic ponds. The upper subsystem achieved significant microbial reductions of >98 percent

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22

Allen, Laura. "The application of biodiversity indicators to infer ecosystem health in regenerating tropical forest." Thesis, University of Glasgow, 2019. http://theses.gla.ac.uk/40949/.

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There are an overwhelming number of biodiversity indices and indicators available for ecologists and conservationists to use when seeking to understand how biodiversity responds to human disturbance. In choosing between measures there is often an underlying assumption that if a measure works well for one group it will be equally applicable to another. In this study, I use multiple taxa to explore the performance of a wide range of alpha and beta diversity measures for studying biodiversity responses to human disturbance in tropical forest. I sampled 18 sites along a gradient of human disturban

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23

Cheung, Ka-hong. "Chromate toxicity assessment and detoxification by bacteria from the marine environment /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36249890.

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24

Sutanto, Yovita. "Manure from grazing cattle effects on soil microbial communities and soil quality in northern West Virginia pastures /." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3933.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains vii, 72 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references.

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Monson, Michael L. Jr. "The Effects of Increased Hay-Grain Ratio on Masai Giraffe Behavior, Health Indicators and Fecal Microflora Diversity." Cleveland State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=csu1475530272039469.

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26

Kwong, Pui-ki. "Surface water quality indicators in China and their implications for sustainability." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36618718.

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27

Dlamini, Nonhlanhla. "An assessment of the health status by non-specific stress indicators in early farming populations from central and southern Africa." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/26516.

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The adoption of an agricultural lifestyle had profound implications for nutritional ecology, health and behaviour of human populations. The goal of this project was to generate information about the health status and disease patterns of early farming populations from central and southern Africa. Skeletal material was obtained from various 'Iron Age' sites in South Africa, Ingombe Ilede from Zambia, and Sanga and Katoto from the Democratic Republic of Congo. Palaeopathological analyses was done through the examination of non-specific stress indicators that included cribra orbitalia/porotic hype

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Miniutti, Danielle M. "Bioindicators of Desorbed Contaminants Following Resuspension of Penobscot River Sediments." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/MiniuttiDM2007.pdf.

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29

Shepard, Gerald T. "Determination of a true biotic index and comparison of riffle and snag habitats in Bearskin Creek, Oneida County Wisconsin, using a modified biotic index /." Link to abstract, 2002. http://epapers.uwsp.edu/abstracts/2002/shepard.pdf.

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30

Bergolc, Melanie. "A paleoenvironmental analysis using fossil insects in late Quaternary deposits in Indiana and Ohio." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1092940677.

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31

Reese, Carol Jean. "Pigments as Indicators of a Response to Environmentally Induced Modification of a Coral-Algal Symbiosis." NSUWorks, 1990. http://nsuworks.nova.edu/occ_stuetd/363.

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The purpose of this study was to assess whether phagotrophy may be proportionally more important to coral nutrition with decreasing light intensity. An animal carotenoid pigment, possibly astaxanthin, isolated from Montastrea annularis was used as an indicator of phagotrophy. This carotenoid was measured in corals collected over a depth transect in the field and in corals exposed to varying amounts of food and light in laboratory experiments. In the field, multiple cores of the same and different coral heads were collected at each of four depths, 4.6, 7.6, 18.3 and 22.9 m. In the laboratory, c

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Mengel, Doreen C. "Amphibians as Wetland Restoration Indicators on Wetlands Reserve Program Sites in Lower Grand River Basin, Missouri." Thesis, University of Missouri - Columbia, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13850742.

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<p> Globally, amphibians have suffered dramatic population declines in the past twenty years with habitat destruction implicated as the primary threat. The Natural Resources Conservation Service’s Wetlands Reserve Program (WRP) restores wetlands on marginal agricultural land and is a means to restore the spatio-temporal wetland habitat required by amphibians to prevent, reverse, or stabilize declining population trends. The goal of WRP is “to achieve the greatest wetland functions and values, along with optimum wildlife habitat, on every acre enrolled in the program.” Functio

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Green, Melissa V. "Prevalence and Distribution of Staphylococcus aureus and Other Potential Health Risk Indicators in South Florida Beaches." NSUWorks, 2004. http://nsuworks.nova.edu/occ_stuetd/281.

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This report is part of the first study to evaluate the potential use of non-traditional and non-enteric bacteria as indicators of health risk in recreational waters and beach sand in south Florida. This study evaluated the possibility of utilizing a series of novel indicators including Staphylococcus aureus, Clostridium perfringens, Pseudomonas aeruginosa, and Vibrio species to assess beach quality. To evaluate the usefulness of these 4 novel microorganisms as potential indicators, 3 south Florida beaches were sampled for a 1 year period and during the year, the distribution across 500m of the

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Vázquez, Rosa I. "Decomposition rates of organic amendments and soil organic matter fractions as indicators of soil quality : an on-farm study of organic and conventional dairy farms in Ohio /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488202678776313.

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35

Simaika, John Pascal. "Practical conservation planning from local to continental scales using freshwater invertebrates." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/18051.

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Thesis (PhD)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: Dragonflies (Insecta: Odonata) are a valuable tool for assessing aquatic systems and have been used as indicators of ecological health, ecological integrity, and environmental change, including climatic change. In four separate studies I explored the usefulness of dragonflies as surrogates in biomonitoring, site prioritization and indication of global climate change. In the use of dragonflies for biomonitoring, I field-tested a freshwater ecological integrity index, the Dragonfly Biotic Index (DBI), based on dragonfly assemblage

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Kennard, Mark. "A quantitative basis for the use of fish as indicators of river health in eastern Australia." Connect to this title online, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051004.155737/.

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Gadbois, Nicholas Brian. "Using Chaetognatha as Indicators of Water Masses in the Florida Current, Broward County, Florida." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/168.

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Zooplankton samples and water mass measurements were conducted along a 10 km long, east-west transect off the coast of southeast Florida during 2007. Temperature and salinity measurements were recorded using a conductivity-temperature-depth (CTD) sensor, and current direction and magnitude measurements were recorded using an acoustic Doppler current profiler (ADCP). Daylight zooplankton samples were collected using a 335 μm mesh bongo net at surface 0-25 m and 0-150 m (nearshore) and 0-200 m (offshore), at three stations, for 5 nonconsecutive months along the transect. Chaetognatha were separa

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Kwong, Pui-ki, and 鄺沛琪. "Surface water quality indicators in China and their implications for sustainability." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36618718.

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Geraghty, Maureen Elizabeth. "Physiological and molecular indicators of change in the intestinal microflora of postmenopausal women consuming soy and fructooligosaccharides (FOS)." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1149013040.

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40

Staples, Peter G. "Freshwater tortoises Chelodina Longicollis Shaw and Emydura SP (Cooper Creek) : their potential as bio-monitors of environmental heavy metal contamination /." Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09AEVH/09aevhss794.pdf.

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Cheung, Ka-hong, and 張嘉康. "Chromate toxicity assessment and detoxification by bacteria from the marine environment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45015351.

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Beghelli, Frederico Guilherme de Souza. "As relações de organismos bentônicos bioindicadores com a poluição por metais e metaloides em represas do sistema Cantareira, São Paulo /." Sorocaba, 2016. http://hdl.handle.net/11449/140278.

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Orientador: Viviane Moschini Carlos<br>Coorientador: Marcelo Luiz Martins Pompêo<br>Resumo: Vivemos atualmente, um cenário de crise hídrica mundial. Tal crise inclui tanto aspectos quantitativos quanto qualitativos ameaçando a segurança hídrica das sociedades humanas e os ecossistemas do planeta Terra. No Brasil, a região hidrográfica do Paraná destaca-se como região com maior densidade populacional, desenvolvimento econômico e industrial do país sendo, portanto, a região com maior demanda pelo recurso. No Estado de São Paulo desenha-se uma situação de crise hídrica agravada em ambos os aspect

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Devor, Devin Patrick. "Effects of Hyperoxia on Thermal Tolerance and Indicators of Hypoxic Stress in Antarctic Fishes That Differ in Expression of Oxygen-Binding Proteins." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1362666619.

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Fernandes, Gerson Eli. "Cobertura florestal ou função ecológica: o dilema da restauração na bacia do Rio Sorocaba." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8531.

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Submitted by Milena Rubi (milenarubi@ufscar.br) on 2017-02-24T15:58:06Z No. of bitstreams: 1 FERNANDES_Gerson_2016.pdf: 13725241 bytes, checksum: 4bf54868355621d2ad09ae85d6c244f4 (MD5)<br>Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2017-02-24T15:58:17Z (GMT) No. of bitstreams: 1 FERNANDES_Gerson_2016.pdf: 13725241 bytes, checksum: 4bf54868355621d2ad09ae85d6c244f4 (MD5)<br>Approved for entry into archive by Milena Rubi (milenarubi@ufscar.br) on 2017-02-24T15:58:24Z (GMT) No. of bitstreams: 1 FERNANDES_Gerson_2016.pdf: 13725241 bytes, checksum: 4bf54868355621d2ad

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Williams, James Michael. "Assessment of anti-neoplastic activity in cancerous and non-cancerous cells using nuclear growth indicators." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1321.

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Velonis, Heather Kelly. "Predicting Parturition in a Long-Gestating Species: Behavioral and Hormonal Indicators in the Asian Elephant (Elephas maximus)." PDXScholar, 2017. https://pdxscholar.library.pdx.edu/open_access_etds/4021.

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Captive populations of Asian elephants (Elephas maximus) in North America are not self-sustaining, and increasing reproductive success within captive populations is a high priority. The ability to accurately predict parturition can have a direct impact on elephant welfare. Elephants in captivity often require significant preparation and management throughout the birthing process, and complications during labor and delivery can necessitate immediate intervention, including stillbirth, protracted labor, maternal aggression towards a newborn calf, and dystocia. Being able to predict when parturit

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Bastos, Joani Cristina Húngaro Aires da Gama [UNESP]. "Avaliação da sensibilidade de organismos aquáticos e terrestres ao triclopyr." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/136029.

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Made available in DSpace on 2016-03-07T19:20:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-10-13. Added 1 bitstream(s) on 2016-03-07T19:24:45Z : No. of bitstreams: 1 000858310.pdf: 845115 bytes, checksum: 5ec5166e1b27f0663340b13817b13b43 (MD5)<br>O uso inadequado de herbicidas como o triclopyr pode gerar resíduos no solo e na água que podem colocar em risco o equilíbrio do meio ambiente. Para compreender os efeitos deste herbicida no meio ambiente, o presente tem como objetivo classificar o triclopyr pela sua toxicidade aguda para cinco espécies aquáticas, selecionar espécies não

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Bastos, Joani Cristina Húngaro Aires da Gama. "Avaliação da sensibilidade de organismos aquáticos e terrestres ao triclopyr /." Jaboticabal, 2015. http://hdl.handle.net/11449/136029.

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Orientador: Dagoberto Martins<br>Coorientador: Robinson Antonio Pitelli<br>Banca: Silvano Bianco<br>Banca: Fernando Tadeu de Carvalho<br>Banca: Ricardo Victória Filho<br>Banca: Marcos Antonio Kuva<br>Resumo: O uso inadequado de herbicidas como o triclopyr pode gerar resíduos no solo e na água que podem colocar em risco o equilíbrio do meio ambiente. Para compreender os efeitos deste herbicida no meio ambiente, o presente tem como objetivo classificar o triclopyr pela sua toxicidade aguda para cinco espécies aquáticas, selecionar espécies não alvo para o monitoramento ambiental desta molécula c

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Carpenter, Kurt Davis. "Indicators of Nutrient Limited Plankton Growth in Lakes Near Mount Saint Helens, Washington." PDXScholar, 1994. https://pdxscholar.library.pdx.edu/open_access_etds/4874.

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Several lakes located in the blast zone of the 1980 eruption of Mount St. Helens were studied to determine if the plankton in the lakes were limited in their growth by nitrogen or phosphorus availability. Long term nutrient enrichment experiments were performed on lake water from five lakes and measures of chlorophyll-a, carbon fixation, and nutrient uptake were used to evaluate the extent of limitation. Nutrient concentrations, ratios, and uptake from 14 lakes provided additional evidence for limitation by nitrogen and/or phosphorus. The physical, chemical, and biological characteristics of t

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Beazley, Karen. "A focal-species approach to biodiversity management in Nova Scotia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0026/NQ36569.pdf.

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