Dissertations / Theses on the topic 'Benthic macroinvertebrates'
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Christman, Van D. "Ecology of benthic macroinvertebrates in experimental ponds." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-134927/.
Full textJohansson, Andreas. "Effects of beaver dams on benthic macroinvertebrates." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-396803.
Full textGabel, Friederike. "Impacts of ship-induced waves on benthic macroinvertebrates." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2012. http://dx.doi.org/10.18452/16498.
Full textInland navigation is a major human use of rivers and lakes worldwide which is expected to increase in the future. It significantly affects shore habitats by ship-induced waves. In contrast to the importance of such pressures, the effects of these hydrodynamic disturbances on benthic invertebrates in the littoral zones are poorly understood, even that invertebrates are a central element of littoral food webs. Hence, I investigated 1) the direct and immediate effects of ship-waves on benthic invertebrates, 2) their subsequent effects on trophic interactions and 3) on the growth and fitness of invertebrates, and finally 4) the long-term effects on the community composition. Laboratory and field experiments showed increasing detachment of invertebrates with higher wave-induced shear stress. Detachment was significantly mitigated by higher structural complexity of the habitats, as complex habitats dissipate wave energy and provide better fixing possibilities. Moreover dislodgement of invertebrates led to a higher risk of being preyed upon by fusiform fish, while deep bodied fish reduced feeding under waves. Waves also reduced growth and fitness of native invertebrates via reduced feeding or increased energy costs, while non-native invertebrates were not affected. The cumulative impact of ship-waves alters the community composition of benthic invertebrates. The abundance of native invertebrates and total species richness was lower at exposed sites, while non-native invertebrates increased in abundance. Thus, ship-waves affect benthic invertebrates on the individual, species, and community levels, as well as the interaction of trophic levels, and hence will alter the ecological structure and function of whole littoral zones. Adverse effects of ship-waves may be mitigated by protecting structural complex habitats such as tree roots and dense reed belts, and by minimizing wave generation by increasing minimum sailing distance to shore or by adjusting vessel speed.
Garey, Andrew L. "The Effects of Hydropeaking on Lotic Benthic Macroinvertebrate Assemblages." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/4057.
Full textO'Hare, Matthew Thomas. "Flow preferences of benthic macroinvertebrates in three Scottish rivers." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312705.
Full textSong, Mi-Young. "Ecological quality assessment of stream ecosystems using benthic macroinvertebrates." Toulouse 3, 2007. http://thesesups.ups-tlse.fr/224/.
Full textIn this study, we applied the SOM for ecological assessment using benthic macroinvertebrates in aquatic ecosystem. First, Chapter I, SOM was utilized to extract information from complex data of environmental variables and benthic macroinvertebrate communities residing in different micro-habitats. Although the sampling was carried out in a limited area, the patterns of environmental variables revealed spatial heterogeneity. The clustering of benthic macroinvertebrate communities in the trained SOM was efficient in showing temporal variation and evaluating water quality according to the conditions of different micro-habitats. Consequently, local spatial heterogeneity is important in revealing dynamics of community abundance and biotic indices, especially regarding restoration processes in polluted streams. Chapter II, the samples were grouped into three main clusters corresponding to distinc EPTC assemblages in the tributary streams of the Garonne River catchment, southern France. Lower richness and diversity of macroinvertebrates were observed in the areas affected by agricultural land use, being associated with high Total Dissolved Solids (TDS), Nitrate (NO3) and Chemical Oxygen Demand (COD). Tolerant EPTC species were identified as controlling parameters for the changes in the assemblages collected at the agricultural-impacted sites. .
Roberts, Lenn Darrell. "Benthic Macroinvertebrate Susceptibility to Trout Farm Effluents." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35004.
Full textMaster of Science
Foster, Carole A. "Benthic macroinvertebrates in Uvas Creek, California, downstream of a reservoir." Thesis, San Jose State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1583489.
Full textI sampled macroinvertebrates in May, July, and October 2008 in Uvas Creek, a reservoir-regulated stream in south Santa Clara County, California, to assess what factors (including canopy closure, turbidity, and stream flow) downstream of the reservoir were related to food availability for rearing juvenile Steelhead (Oncorhynchus mykiss). I found benthic and drifting macroinvertebrate biomass was considerably greater during most months in the more open-canopied two sites in the downstream reach as compared to the densely shaded, more turbid and silty two sites in the upstream reach. Abundance of important drifting aquatic invertebrates in May (chironomids, simuliids, and baetids) was proportional to benthic abundance, but large hydropsychids were relatively scarce in the drift. Terrestrial drift abundance correlated with canopy density, but differences were small compared to the substantial increase in aquatic drift in sunnier sites. Thinning of the canopy at select locations and reduction of sediment input to Uvas Creek and its tributaries due to vineyard and other operations could increase benthic macroinvertebrate productivity in the upstream reach, which would increase food availability for rearing juvenile Steelhead.
Kaller, Michael D. "Effects of sediment upon benthic macroinvertebrates in forested northern Appalachian streams." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1862.
Full textTitle from document title page. Document formatted into pages; contains x, 157 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.
McNish, Julie Helen. "An interdisciplinary assessment of variations in acidity in Yorkshire rivers, with special reference to episodic acidification of headwaters in the Esk catchment." Thesis, University of Huddersfield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285628.
Full textBéjar, Maceiras María. "Interactions between sediment transport, physical habitat and benthic communities in a mountainous river affected by natural and human disturbances." Doctoral thesis, Universitat de Lleida, 2018. http://hdl.handle.net/10803/664346.
Full textEsta tesis doctoral analiza las interacciones entre los procesos físicos (transporte de sedimentos, caudal y hábitat) y ecológicos (comunidades bentónicas, deriva de macroinvertebrados) afectados por perturbaciones naturales (crecidas y entrada de afluentes) y antrópicas (extracción de áridos e hidropuntas) en un rio de montaña (el alto Cinca, en el sur de los Pirineos). Dichos procesos y sus interacciones se han evaluado desde una escala instantánea hasta anual, y desde la escala de partícula a la escala de tramo. La identificación de las escalas de interacción así como el uso de nuevas técnicas de muestreo han demostrado ser relevantes para el estudio de la relación especie-hábitat y constituyen, por ello, un nuevo ejemplo de integración eco-geomorfológica que contribuye al conocimiento de los sistemas fluviales y apoya la gestión sostenible de los mismos.
This doctoral thesis presents new insights on the interactions between physical (sediment transport, flow and habitat) and ecological (benthic communities, macroinvertebrate drift) processes driven by natural (tributaries, floods) and human disturbances (gravel mining and hydropeaking) in a montane river (the upper Cinca, Southern Pyrenees). The work addresses processes and interactions spanning instantaneous to annual temporal scales, and from grain to river reach scale. Identification of the key scales of interaction and the integration of sampling techniques that provide continuous and high density measurements are shown to provide sound knowledge into species-habitat relations and, in turn, a firm evidence supporting the rational assessment and sustainable management of fluvial ecosystems.
Khan, Muhammad Irfan. "A lotic microcosm for ecological and ecotoxicological studies on benthic macroinvertebrates." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320214.
Full textNeale, Martin William. "Classifying and measuring the ecological status of lakes using benthic macroinvertebrates." Thesis, University of Ulster, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414101.
Full textTharme, Rebecca Elizabeth. "Ecologically relevant low flows for riverine benthic macroinvertebrates: characterization and application." Doctoral thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/11040.
Full textMcTammany, Matthew Eric Jr. "The Impact of Urbanization on Benthic Macroinvertebrates in Southern Appalachian Streams." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/46508.
Full textMaster of Science
Eby, Gloria. "TMDL BIOASSESSMENT SAMPLING OF BENTHIC MACROINVERTEBRATES FOR LAKE JESUP AND LAKE SEMINARY." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3899.
Full textM.S.
Department of Biology
Sciences
Biology MS
Lage, Fernanda. "Aplicação da tríade de qualidade do sedimento em análise espacial no reservatório do Guarapiranga (SP, Brasil)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19032014-141437/.
Full textWith the purpose to know the history of the benthic community in Guarapiranga reservoir for future study about the influence of different sources of pollution in the reservoir over zoobenthos, this study was conducted to collect historical data of benthic fauna and variation in community structure. Four studies conducted during winter in four regions of the reservoir medium-profundal (Guarapiranga, Embu-Mirim, Embu-Guaçu and Parelheiros) over the years, 1939, 1976, 1996 and 2010 were analysed. The best richness of data presented in the works reflected the evolution of knowledge in limnological studies, in Brazil and worldwide. The density of Oligochaeta had an increase over the years as well as the Chaoboridae. On the other hand, Chironomidae presented 30% in the 70\' community and was not representative anymore in 2010. The environment showed strong organic enrichment for all regions along the years, and this has contributed to a greater diversity of detritivorous groups (Tubificinae and Naidinae - Oligochaeta), for example. The dissolved oxygen levels at the bottom declined over the years in all regions. Attention is called to the necessity of biomonitoring in 4 regions of the reservoir, using benthic macroinvertebrates and physical and chemical sediment analyses and the adoption of a new way of managing this system
Eliason, Kevin Matthew. "The Short Term Responses of Benthic Macroinvertebrates to the Removal of Riparian Rhododendron in Southern Appalachian Streams." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/77931.
Full textMaster of Science
Sandin, Leonard. "Spatial and temporal variability of stream benthic macroinvertebrates : implications for environmental assessment /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-6056-5.pdf.
Full textIrving, Katherine Sarah [Verfasser]. "Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates / Katherine Sarah Irving." Berlin : Freie Universität Berlin, 2020. http://d-nb.info/1214641342/34.
Full textLittle, Sally. "The impact of increasing saline penetration upon estuarine and riverine benthic macroinvertebrates." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/9737.
Full textFreeman, Emily K. "Effects of Dreissenid Mussel Druses on Heavy Metals Transfer via Benthic Macroinvertebrates." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1372077038.
Full textSullivan, Joseph C. "Contemporary assessment of benthic macroinvertebrates and fish interactions in the Truckee River, NV." abstract and full text PDF (UNR users only), 2009. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1472981.
Full textAmos, Katlyn L. "Investigating Historical and Contemporary Land Cover Effects on Macroinvertebrate Communities and Water Quality of Virginia Piedmont Streams." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50513.
Full textMaster of Science
Raunio, J. (Janne). "The use of Chironomid Pupal Exuvial Technique (CPET) in freshwater biomonitoring: applications for boreal rivers and lakes." Doctoral thesis, University of Oulu, 2008. http://urn.fi/urn:isbn:9789514286834.
Full textDahl, Joakim. "Detection of human-induced stress in streams : comparison of bioassessment approaches using macroinvertebrates /." Uppsala : Dept. of Environmental Assessment, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/s332.pdf.
Full textRanganath, Sheila Casaba. "Recovery of Channel Morphology and Benthic Macroinvertebrate Assemblages after Livestock Exclusion." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/33455.
Full textMaster of Science
Hedrick, Lara B. "Evaluation of the impacts of highway construction on sediment and benthic macroinvertebrates in Appalachian streams." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5643.
Full textTitle from document title page. Document formatted into pages; contains xii, 162 p. : ill. (some col.), maps (some col.). Vita. Includes abstract. Includes bibliographical references.
Hilderbrand, Robert Howard. "Relations between large woody debris, physical habitat, and benthic macroinvertebrates in Appalachian mountain streams." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06082009-170744/.
Full textLonging, Scott Douglas. "Ecological studies of benthic macroinvertebrates for determining sedimentation impacts in Chattahoochee National Forest streams." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27008.
Full textPh. D.
KORPIK, JEFFERY S. "IMPACT OF HABITAT AND WATER QUALITY ON THE BENTHIC MACROINVERTEBRATE COMMUNITY IN A MULTI-STRESSED URBAN STREAM." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1123858583.
Full textVasconcelos, Márlon de Castro. "Efeito do sedimento fino de origem terrestre sobre a fauna de macroinvertebrados bentônicos em riachos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10908.
Full textOne of the main forms by which aquatic ecosystems are impacted is the input of fine sediment. The objective of our study was to determinate by one experiment the effect of fine sediment on benthic macroinvertebrates in subtropical streams. The study area was the Forqueta River in Barra do Ouro district of Maquiné city, Rio Grande do Sul, Brazil. It’s was added 3138 cm3 of sediment, in two fractions: fine sand (0mm – 0.25mm) and coarse sand (0.25mm – 1mm) into the river with two levels (with or without sediment) . The data were analyzed by Analysis of Variance (ANOVA two-way) for abundance, richness and rarefied richness, the last one intended to compare species richness based on an equivalent number of individuals. Using Multivaried Analysis of Variance (MANOVA) we examined the effect of fine sediment on relative abundance and composition of species. Sediment was used as one factor in four levels. A Partial Canonical Correspondence Analysis (pCCA) was used to examine the effect of the disturbance event on communities. The interaction between the flow and the factors of the sediment was examined. There was a negative effect of fine sediment on abundance, richness and species composition, but the effect was null on relative abundance and rarefaction of species richness. The flow was important for distribution of individuals colleted. The abundance, species richness and rarefied richness were highest on places with fastest flows. The flow increased the effect of fine sand on abundance and rarefied richness. The pCCA showed that disturbance events of small frequency consisting of input of terrestrial sediment have no negative effects on benthic macroinvertebrate. The relationship between flow and benthic macroinvertebrates can be attributed to the ecological preferences of species. These results showed that fine sediment impact is harmful for benthic macroinvertebrates in streams, particularly in termsof abundance. This negative effect may be a consequence of loss of habitat, reduced food quality, physiological stress and others forms. Because some results differ from other studies, the effect of the fine sediment on the benthic macroinvertebrates needs to be better studied.
Jarving, Ohlsson Julius, and Linus Welander. "Hasslebäcken En studie av vattenkvalitet,vandringshinder och potentiellareproduktionsbiotoper för öring." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-32374.
Full textBraccia, Amy. "Quantifying the environmental factors that determine benthic macroinvertebrate assemblages in streams by analyzing stressors associated with a gradient of cattle grazing." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29326.
Full textPh. D.
Merricks, Timothy Chad. "Ecotoxicological Evaluation of Hollow Fill Drainages in Low Order Streams in the Appalachian Mountains of Virginia and West Virginia." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/32977.
Full textMaster of Science
Soucek, David John. "Integrative Bioassessment of Acid Mine Drainage Impacts on the Upper Powell River Watershed, Southwestern Virginia." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/27852.
Full textPh. D.
Layton, Raymond Jay. "Production of benthic macroinvertebrates in a river used for commercial navigation : Kanawha River, West Virginia /." Thesis, This resource online, 1985. http://scholar.lib.vt.edu/theses/available/etd-03032009-041041/.
Full textHorne, Jennifer L. "The influence of grazing macroinvertebrates on the structure of benthic diatom assemblages : implications for biomonitoring." Thesis, University of Sheffield, 2009. http://etheses.whiterose.ac.uk/586/.
Full textBernard, Aaron Michael. "Geospatial Modeling of Forest Road Networks and Their Effect on Stream Macroinvertebrate Communities." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/33338.
Full textMaster of Science
Bopp, Jesse A. "Combined effects of water chemistry, canopy cover, and stream size on benthic macroinvertebrates along a central Appalachian stream continuum." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2474.
Full textTitle from document title page. Document formatted into pages; contains viii, 96 p. : ill., maps (some col.). Includes abstract. Includes bibliographical references (p. 41-51).
Sokol, Eric Robert. "Community ecology of aquatic insects in forested headwater streams in the southern Appalachians." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29110.
Full textPh. D.
Ilmonen, J. (Jari). "Benthic macroinvertebrate and bryophyte assemblages in boreal springs: diversity, spatial patterns and conservation." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514290633.
Full textWilley, Katherine Tara. "Environmental Factors Determining the Pre-Restoration Benthic Macroinvertebrate Assemblage In A Stream Used By Cattle." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/35221.
Full textMaster of Science
Tiller, David, and n/a. "The impact of sewage effluent on the benthic macroinvertebrate community of the upper Thredbo River." University of Canberra. Applied Science, 1988. http://erl.canberra.edu.au./public/adt-AUC20061109.145223.
Full textNebra, Costas Alfonso. "Ecology and bioindicator potential of benthic macroinvertebrates in a Mediterranean salt wedge estuary: the Ebro River case." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/385277.
Full textEl objetivo general de la presente tesis fue describir la ecología de la comunidad de macroinvertebrados bentónicos del estuario del Río Ebro, un estuario de cuña salina o altamente estratificado. En concreto esta tesis exploró a un alto nivel de resolución taxonómica la dinámica espacio-temporal de la comunidad de macroinvertebrados en relación con los gradientes ambientales de un estuario de este tipo, con el propósito de evaluar su uso potencial como indicadores biológicos en otros estuarios mediterráneos altamente estratificados. La condición bentónica actual del estuario del río Ebro fue descrita de manera exhaustiva, incluyendo la caracterización físico-química del agua (concentración de nutrientes, contenido de sólidos en suspensión, oxígeno disuelto, pH, temperatura y salinidad) así como un análisis granulométrico del sedimento y la estimación del contenido en materia orgánica. Los datos físico-químicos fueron utilizados para la estimación de un gradiente de contaminación orgánica mediante la técnica de PCA. Además, debido a la relevancia del caudal del río en la dinámica de la cuña salina (avance, retirada y permanencia) y por lo tanto en la ecología bentónica del estuario, se comparó la dinámica actual de la cuña salina, gravemente alterada por la regulación del caudal, con la dinámica natural de la cuña salina que se obtuvo a partir de datos históricos disponibles en la página web de la Confederación Hidrológica del Ebro. Finalmente, el potencial bioindicador de los macroinvertebrados, con el fin de determinar el Estado Ecológico de acuerdo con los criterios de la DMA, fue evaluado mediante el análisis de la respuesta de varios índices bióticos basados en macroinvertebrados en relación con las principales presiones antrópicas que afectan al estuario del Ebro, contaminación orgánica y la alteración hidrológica. Los resultados obtenidos evidencian la relevancia de los macroinvertebrados en el funcionamiento ecológico del estuario así como su idoneidad como indicadores biológicos en relación con la contaminación orgánica Las principales conclusiones obtenidas en esta tesis son: 1. La comunidad actual de macroinvertebrados del estuario del Ebro difiere en gran medida a la encontrada en la década de los 90 cuando la condición de anoxia, debida a un exceso de materia orgánica de origen eutrófico, impedían el establecimiento de comunidades biológicas. La comunidad actual de macroinvertebrados mostró valores excepcionalmente altos de riqueza (213 taxones) comparado con otros estuarios templados; los moluscos, poliquetos y crustáceos fueron los grupos dominantes en términos de riqueza y de abundancia. 2. Como consecuencia de la regulación hidrológica a la que está sometido el tramo bajo del río Ebro, la dinámica de la cuña salina está gravemente alterada causando largos períodos de presencia de cuña salina y de estratificación de la columna de agua. La presencia de cuña salina divide al estuario del Ebro en dos tramos opuestos en función de sus características limnológicas; aguas arriba de la cuña, un tramo con características fluviales y una comunidad de macroinvertebrados dulceacuícola (alto estuario) y aguas abajo un tramo estuarino con agua con salinidades prácticamente marinas debido a la escasa mezcla con el agua del río y una comunidad de macroinvertebrados de origen marino (bajo estuario). 3. El cambio brusco de salinidad fue el principal factor que determinó la estructura de la comunidad de macroinvertebrados del estuario del Ebro. Debido a la práctica inexistencia de agentes de mezcla entre la capa de agua dulce y la marina, el intercambio de materiales y de organismos es muy limitado, como consecuencia la distribución de la comunidad a lo largo del estuario encaja con un patrón de turnover o sustitución total. Este patrón junto con las características homogéneas de ambos ambientes (alto y bajo estuario) sugieren que el estuario del Ebro está funcionando en términos de fronteras ecológicas como un ecotono. 4. La estaciones de muestreo cercanas al punto nulo o nodal (punto donde contactan ambas capas de agua y con valores de velocidad cercanos a cero) mostraron los valores más bajos de riqueza y abundancia debido a que esta zona de mayor estrés dentro del estuario. 5. Durante la última década el estado químico del estuario del Ebro ha mejorado debido a la disminución de los aportes de nutrientes, en especial de fósforo, en toda la cuenca. Esto llevó a la mitigación del proceso de eutrofización y a una oligotrofización del estuario que actualmente recibe menos aportes de materia orgánica atenuando su impacto y reduciendo los eventos de anoxia e hipoxia. Como resultado de esta mejora, la comunidad de macroinvertebrados ha sido capaz de recolonizar el estuario alcanzando un alto grado de complejidad. 6. La comunidad de macroinvertebrados demostró su capacidad de respuesta frente a las principales presiones que afectan al estuario del Ebro. Los parámetros de la comunidad disminuyeron hacía el punto nodal en respuesta al incremento de factores de estrés hidrológico y al incremento de la contaminación en el punto nodal debido a la circulación convergente. 7. La alteración hidrológica de la dinámica de la cuña salina creó una estabilidad artificial en las condiciones ambientales, este hecho favoreció a la comunidad de macroinvertebrados. Como consecuencia tras la aplicación de varios índices biológicos se identificó una respuesta paradójica a esta presión, a mayor grado de alteración hidrológica mayor complejidad en la comunidad y por lo tanto mejor estado ecológico. Este resultado evidencia que es necesaria una aproximación diferente para la determinación del estado ecológico en cuencas mediterráneas donde los aspectos hidrológicos están ganando en relevancia en comparación con la calidad del agua y del sedimento.
Haidekker, Alexandra. "The effect of water temperature regime on benthic macroinvertebrates a contribution to the ecological assessment of rivers /." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976540819.
Full textMulders, Joseph Alexander. "Effects of land-use change on benthic macroinvertebrates in the upper reaches of the Apies-Pienaar catchment." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/53534.
Full textMini Dissertation (MSc)--University of Pretoria, 2015.
Geography, Geoinformatics and Meteorology
MSc
Unrestricted
Evans, Shane Kent. "Studies of Benthic Macroinvertebrates in Western Virginia Streams as Related to the Implementation of Rapid Bioassessment Techniques." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30700.
Full textPh. D.
Schmidt, Travis Scott. "Development and Implementation of Integrative Bioassessment Techniques to Delineate Small Order Acid Mine Drainage Impacted Streams of the North Fork Powell River, Southwestern Virginia." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35095.
Full textMaster of Science
Hiner, Stephen W. "Analyses of Two Aspects of Study Design for Bioassessment With Benthic Macroinvertebrates: Single Versus Multiple Habitat Sampling and Taxonomic Identification Level." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9716.
Full textMaster of Science