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Dissertations / Theses on the topic 'Benthic environment'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Duna, Oliver Olwethu. "The influence of the physical environment, topography and time on the inshore distribution of invertebrate larvae : a multi-taxon approach." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017804.

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Coastal hydrodynamics regulate population dynamics through the distribution and dispersal of the meroplankton of many benthic invertebrates. I examined the hydrodynamics at four different sites on the south-east coast of South Africa and coupled them with larval sampling done at high temporal and spatial resolution. Day and night sampling was done at all four sites and a continuous 24 hour study was done in one site, both forms of sampling were carried out in autumn and spring. Samples were taken at two stations, 900 metres offshore and 300 metres apart, within each site. Water properties meas

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2

Radabaugh, Kara. "Light-Environment Controls and Basal Resource Use of Planktonic and Benthic Primary Production." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4564.

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Consumers in marine and estuarine environments have a strong reliance on planktonic and benthic primary production. These two basal resources form the foundation of aquatic food webs, yet the abundance of phytoplankton and benthic algae are frequently inversely related due to competition for light and nutrients. As a result, optimal habitats for benthic and planktonic consumers vary spatially and temporally. To investigate these trends, three studies were conducted focusing on light attenuation and basal resources in a bay, river, and on a continental shelf. δ13C and δ15N stable isotopes can b

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3

Haverson, David Thomas. "Numerical modelling of the interaction between tidal stream turbines and the benthic environment." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/27784.

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The tidal stream industry has seen large growth in recent years, and the number of pre-commercial scale devices currently being tested reflects this development. However, commercialising this technology whilst showing that their environmental impacts is minimal remains a challenge. The impact on benthic communities is not considered to be a key strategic consenting issue, yet it is anticipated that the benthic habitat will change as a result of the presence of tidal turbines. To date, only single tidal turbine devices have been installed to demonstrate the application of tidal stream technolog

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4

Whomersley, Paul. "Uses of benthic ecology in the assessment of anthropogenic impacts in the marine environment." Thesis, Edinburgh Napier University, 2009. http://researchrepository.napier.ac.uk/Output/3741.

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The ability to detect and manage anthropogenic disturbances in the marine environment is more important than ever, given increasing pressure from a range of sources and the growing awareness of the sensitivity of some marine habitats. The main aims of this study were to ascertain if intensity and type of disturbance were important factors to consider during the assessment of these disturbances. Throughout, various techniques were used and assessed, e.g. primary, derived, multivariate and biological indices, as tools capable of indicating changes within benthic communities. A methodology of sel

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5

Schuchert, Pia Christiane. "Modelling Large Scale Coral Reef Fish and Benthic Community Structures in a Subsistence Fishing Environment." Thesis, University of Newcastle upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519443.

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6

Dahl, 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.

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7

Fallesen, Grethe. "The ecology of macrozoobenthos in Arhus Bay, Denmark." Thesis, University of Stirling, 1994. http://hdl.handle.net/1893/21608.

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The aim of this thesis has been to: 1) assess the state of pollution in the two study areas and relate them to recent changes found in the Kattegat - Belt Sea area; 2) examine the observed spatial and temporal variability in species composition, abundance and biomass in Arhus Bay and the Formes area and relate the variability to antropogenic and natural causes; 3) discuss and assess methods, particularly for the estimation of secondary production and the use of multivariate analyses as methods for examining changes in macrozoobenthic communities. Macrozoobenthos were sampled at 15 stations in

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8

Wai, Ho Yin. "Effects of deployment of artificial reefs on the marine benthic environment, with special reference to sediment physico-chemical characteristics /." access full-text access abstract and table of contents, 2009. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?mphil-bch-b23750856f.pdf.

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Thesis (M.Phil.)--City University of Hong Kong, 2009.<br>"Submitted to Department of Biology and Chemistry in partial fulfillment of the requirements for the degree of Master of Philosophy." Includes bibliographical references (leaves 144-191)

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9

Hansson, Mattias. "Macroinvertebrate sampling in hydropeaking rivers : Testing Hester-Dendy samplers in a laboratory environment using different flow conditions." Thesis, Karlstads universitet, Avdelningen för biologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78552.

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Degraded rivers and streams caused by disturbances have created a need for reliable tools to assess the ecological status of such ecosystems. Numerous methods and programs have been developed to assess ecological status using biological indicators, benthic macroinvertebrates are the most commonly used biotic indicator. The Hester-Dendy multi-plate sampler is a commonly used tool for sampling benthic macroinvertebrates, but its effectiveness under different environmental conditions has not been adequately tested. The aim of this study was to investigate if HD samplers assess the benthic macroin

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10

Bergamino, Roman Leandro. "Spatial and temporal variations in trophic connectivity within an estuarine environment : benthic-pelagic and terrestrial-aquatic linkages via invertebrates and fishes." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017799.

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Estuarine ecosystems are among the most biologically productive areas and they provide important ecosystem services such as erosion control, habitat and refugia for several species. These environments are characterized by the presence of a variety of organic matter sources due to their transitional position between rivers and the sea. The biotic compositions can undergo spatial and seasonal changes along the estuary due to the spatial and temporal fluctuations of environmental factors such as salinity, temperature and seston loads. Therefore, the different combinations of biotic and abiotic fa

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11

Brittle, Seth William. "Bioavailability and Transformation of Silver Nanoparticles in the Freshwater Environment." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1484594585990252.

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12

Camargo, Bruna Vielmo. "MACROINVERTEBRADOS DA LAVOURA DE ARROZ IRRIGADO TRATADA COM OS AGROTÓXICOS CARBOFURAN E PENOXSULAM." Universidade Federal de Santa Maria, 2010. http://repositorio.ufsm.br/handle/1/5275.

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The rice cultivation (Oryza sativa) has been target of speculations because of its effects in the environment. The intensive pesticides uses in the ricefields have contributed in a meaningful manner to many things related to this crop. The purpose of this study was to compare the benthic macroinvertebrates community in an irrigated rice farm treated with pesticides Carbofuran (insecticide) and Penoxsulam (herbicide) comparing to a control farm. The experiment was accomplished in an experimental lowland area, from the Crop Science Departament of the Universidade Federal de Santa Maria, during t

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13

Bray, Laura. "Preparing for offshore renewable energy development in the Mediterranean." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/10099.

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The development of offshore wind farms and marine renewable energy devices in the Mediterranean is central to both national, and international, energy strategies for countries bordering the Mediterranean Sea. The ecological impacts of marine renewable energy development in the Mediterranean region, although essential for policy makers, are as yet unknown. The Northern Adriatic is identified as a plausible site for offshore wind farm development. Using the wider region (Adriatic and Northern Ionian) as a case study, this thesis examines the likely impact to the marine environment if an offshore

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14

Freilich, Emily. "Restoration of Mauri (Life-Force) to Ōkahu Bay: Investigation of a Community Driven Restoration Process." Scholarship @ Claremont, 2018. https://scholarship.claremont.edu/pomona_theses/196.

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This thesis investigated the restoration of mauri (life-force) to Ōkahu Bay, Auckland New Zealand. Ōkahu Bay is part of the land and waters of Ngāti Whātua Ōrākei, a Māori hapū (sub-tribe). Ngāti Whātua Ōrākei has been driving the restoration, restoring Ōkahu Bay based on their worldview, visions, and concerns. This vision and control of the restoration process allows them to bring in the hapū in sustainable engagement and have the long-term vision and commitment necessary for self-determination. However, while there has been progress with projects and improved decision-making authority, hapū

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15

Helton, Rebekah R. "Ecology of benthic viruses in marine and estuarine environments." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 214 p, 2007. http://proquest.umi.com/pqdweb?did=1362525081&sid=14&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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16

Williams, Ryann A. "Comparing reef bioindicators on benthic environments off southeast Florida." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003191.

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17

Death, Russell G. "Environmental stability: Its effect on stream benthic communities." Thesis, University of Canterbury. Zoology, 1991. http://hdl.handle.net/10092/4812.

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The effects of environmental stability on benthic community structure were examined at eleven sites (ten streams and a wind-swept lake shore) in the CassCraigieburn region, New Zealand. Physicochemical conditions, apart from stability, were similar at all sites. Epilithic biomass was considerably higher at the more stable sites, but the composition of periphyton communities, and amounts of benthic organic matter present were more strongly influenced by the nature of the riparian vegetation than by stream stability. Invertebrate species richness and density were markedly higher at the more stab

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18

Chouinard, Julie. "Metal concentrations in benthic invertebrates in peatlands." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6549.

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In order to assess the influence of various abiotic and biotic factors on metal accumulation in peatlands, insects were collected from bogs, mineral poor fens and circumneutral fens located in Central Ontario. The peatlands represented a gradient in alkalinity from 0 (acid bogs) to 200 $\mu$eq$\cdot$L$\sp{-1}$ (circumneutral fens). Further, the peatlands had important hydrological differences with no obvious inflows in the bogs and inflow/outflow streams in the fens. Given these contrasting environments, it was hypothesized that there would also be differences in metal accumulation in the asso

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19

Culhane, Fiona E. "The use of benthic communities in environmental health assessment." Thesis, Edinburgh Napier University, 2012. http://researchrepository.napier.ac.uk/Output/5687.

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Quality classification of water bodies commonly hinges upon the results of biotic indices. Biotic indices should reliably detect environmental change caused by anthropogenic stress; distinguish between different levels of disturbance; and be applicable in different areas. This study assesses current methods used in the assessment of benthic ecosystem health in transitional and coastal waters. Specifically, this study considers the performance of macrozoobenthos based biotic and diversity indices. Data utilised in the assessment covered a range of sites and environmental gradients including lon

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20

Mednaoui, Hassan el. "Contribution à l'étude du comportement du cuivre en milieu marin côtier. : Aspects chimiques de la bioturbation de l'interface eau-sédiment par le gastéropode Hydrobia Ulvae." Pau, 1986. http://www.theses.fr/1986PAUU3002.

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21

Tinson, S. V. "The environmental metabolic function of benthic copepods from Esthwaite Water, Cumbria." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373481.

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22

West, Fraser James Craig. "Interactions between marine benthic invertebrates and sediments in intertidal and deep sea environments." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395057.

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23

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.

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24

Galanidi, Maria. "Spatial considerations and environmental constraints on benthic prey resources for common scoter." Thesis, Bangor University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443651.

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25

Mullen, Kortney. "Upstream Sources Inhibit Benthic Phosphorus Fluxes in the Lower Great Miami River, Southwest Ohio." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1496852595092696.

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26

Hu, Irene Helen. "A novel trimodal sensor for eddy correlation measurements of benthic flux in aquatic environments." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121703.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: Ph. D., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2019<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 237-251).<br>Quantifying chemical fluxes between natural waters and their benthic sediments is a central problem in biogeochemistry, yet it is notoriously challenging. A relatively new method for measuring benthic fluxes, Eddy Correlat

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27

Ellis, Joanne I. "Incorporation of spatial gradients into benthic impact assessment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0009/NQ34715.pdf.

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28

Polovodova, Irina [Verfasser]. "Benthic foraminifera and environmental change in the South-Western Baltic Sea / Irina Polovodova." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019552859/34.

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29

Da, Silva Ana Aranda. "Benthic protozoan community attributes in relation to environmental gradients in the Arabian Sea." Thesis, University of Southampton, 2005. https://eprints.soton.ac.uk/18664/.

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“Live” (stained) and dead macrofaunal (>300 μm fraction) foraminifera in multicorer samples (0-1 cm and 0-5 cm layers) were analysed at six stations along a transect (100-3400 m water depth) across the Oman margin (Arabian Sea) oxygen minimum zone (OMZ). Very high abundances (2858 per 25.5 cm2), dominated by Uvigerina ex. gr. semiornata, were found in the upper 100 m. The 850 m site also had elevated abundances. These peaks probably represented upper and lower OMZ boundary edge effects, respectively. A total of 199 live species was recognized. Diversity was depressed between 100 m and 850 m an

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30

Sommer, Christian. "Processes and factors governing benthic community dynamics—environmental change in the Baltic Sea." Licentiate thesis, Södertörns högskola, Miljövetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-39750.

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As drivers of biogeochemical cycles and nutrient recycling, such as carbon turnover, the microbial community is essential in sustaining functioning ecosystems. Together with the metazoan community, the microbial community constitute the majority of all life in the benthos. Environmental change in biotic and abiotic factors may influence the dynamics of these communities, for example through a sorting or driving effect on the community structure through assembly processes. Environmental change, e.g. change in dissolved oxygen concentration, salinity and temperature, can directly or indirectly a

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31

Taormina, Bastien. "Potential impacts of submarine power cables from marine renewable energy projects on benthic communities A review of potential impacts of submarine power cables on the marine environment: Knowledge gaps, recommendations and future directions, in Renewable and Sustainable Energy Reviews 96, November 2018 Optimizing image-based protocol to monitor macroepibenthic communities colonizing artificial structures, in ICES Journal of marine science 77(2), March 2020." Thesis, Brest, 2019. http://theses-scd.univ-brest.fr/2019/These-2019-SML-Ecologie_marine-TAORMINA_Bastien.pdf.

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Dans un contexte de développement rapide des projets d’énergies marines renouvelables, le but de cette thèse était d’améliorer les connaissances sur les impacts potentiels des câbles électriques sous-marins sur les écosystèmes benthiques côtiers. En se focalisant sur la phase de fonctionnement, ce travail était essentiellement dédié à la caractérisation de l’effet récif généré par ces câbles et leurs structures associées (protection, stabilisation) sur les communautés épibenthiques fixées et la mégafaune mobile. L’étude était principalement basée sur l’utilisation d’images sous-marines (photo

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32

White, Carol Marie. "Organic matter cycling in hypoxic environments : the role of oxygen availability and benthic faunal communities." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15730/.

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Continental margins receive significant amounts of organic matter (OM) from terrestrial and marine sources, and it is estimated that over 80 % of all organic carbon (OC) preservation in marine sediments takes place in these areas. The least well understood aspect of OM cycling and burial in marine sediments is the role of benthic fauna living on and in the sediments. Seafloor communities influence marine sedimentary OM cycling and burial via a number of activities including digestion, bioturbation or burrowing, respiration, irrigation and ventilation, and through microbial stimulation. In turn

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33

Hung, Oi Shing. "Effects of environmental factors on biofilms and subsequent larval attachment of benthic marine invertebrates /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?AMCE%202007%20HUNG.

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34

Arshad, Aziz. "Temporal and spatial responses of benthic communities and populations across upper estuarine environmental gradients." Thesis, University of Plymouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284365.

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35

Stefanoudis, Paris V. "Benthic foraminiferal responses to mesoscale environmental heterogeneity at the Porcupine Abyssal Plain, NE Atlantic." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/403394/.

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Although our knowledge on the vast deep-sea biome has increased in recent decades, we still have a poor understanding of the processes regulating deep-sea diversity and assemblage composition, as well as their underlying natural variability in space and time. In the face of unprecedented anthropogenic impact on this environment, addressing this knowledge gap remains of paramount importance. In this thesis I focus on the effect of mesoscale (10s of kilometres) spatial heterogeneity, in the form of abyssal hills and surrounding abyssal plains, on benthic communities and specifically on foraminif

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36

Shah, Aliya. "Distribution of epifauna in offshore benthic environments along the west and south coast of South Africa." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29715.

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Marine unconsolidated sediments, such as sand, gravel and muds, constitute the most extensive benthic ecosystems globally. Biological data for these ecosystems are frequently sparse which can hinder the success and implementation of marine management strategies for benthic ecosystems. There are limited studies in South Africa on benthic epifauna. This study investigates the composition and distribution of epibenthic invertebrate assemblages along the west and south coast of South Africa (sampled using depth-stratified demersal trawls) to inform marine environmental management. Sample depth var

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37

Dyson, Kirstie Elizabeth. "Biodiversity and ecosystem processes in heterogeneous environments /." St Andrews, 2008. http://hdl.handle.net/10023/698.

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38

Manley, Catherine Jane. "Environmental variables, including pollutants, affecting living benthonic Foraminiferida." Thesis, University of Plymouth, 1997. http://hdl.handle.net/10026.1/1706.

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Studies of living benthonic foraminiferal assemblages carried out by marine biologists are comparatively rare. This study of the changes in foraminiferal assemblages from three subtidal sites near Plymouth, U.K., has been carried out with the intention of determining the importance of various abiotic and biotic variables to the foraminiferal communities studied using statistical correlation. Temperature and salinity at depth and particle size characteristics together with organic content, bacterial abundance and type, and other meiofauna present were assessed monthly with samples taken for for

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39

Cheng, Jie. "Paleoenvironmental Reconstruction of Florida Bay, South Florida, Using Benthic Foraminifera." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/179.

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Efforts that are underway to rehabilitate the Florida Bay ecosystem to a more natural state are best guided by a comprehensive understanding of the natural versus human-induced variability that has existed within the ecosystem. Benthic foraminifera, which are well-known paleoenvironmental indicators, were identified in 203 sediment samples from six sediment cores taken from Florida Bay, and analyzed to understand the environmental variability through anthropogenically unaltered and altered periods. In this research, taxa serving as indicators of (1) seagrass abundance (which is correlated with

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40

Braccia, 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.

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Relationships between macroinvertebrate assemblages and environmental stressors were assessed from fall 2002 through spring 2004 in five small streams that represented a study design that involved a gradient of increasing stress (increased cattle density). Macroinvertebrate assemblages were related to environmental factors that were quantified at the sample scale. Environmental factors and macroinvertebrates were concurrently collected so that assemblage structure could be directly related to environmental variables and so that the relative importance of stressors associated with cattle graz

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41

Willey, 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.

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I investigated the baseline benthic macroinvertebrate community in relation to the environmental conditions in a section of Smith Creek, north of Harrisonburg, VA, prior to restoration. Quantitative benthic macroinvertebrate and environmental samples were collected in April and September 2006 from the Bruce Farm (BR) section of Smith Creek and the nearby Mixed Use (MU) section of Mountain Run. BR had been heavily used for cattle grazing for decades and suffered from sediment, nutrients, and lack of a forested riparian zone. MU had a forested riparian zone, but still received nutrient and se

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42

Olson, John R. "The Influence of Geology and Other Environmental Factors on Stream Water Chemistry and Benthic Invertebrate Assemblages." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1327.

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Catchment geology is known to influence water chemistry, which can significantly affect both species composition and ecosystem processes in streams. However, current predictions of how stream water chemistry varies with geology are limited in both scope and precision, and we have not adequately tested the specific mechanisms by which water chemistry influences stream biota. My dissertation research goals were to (1) develop empirical models to predict natural base-flow water chemistry from catchment geology and other environmental factors, (2) extend these predictions to nutrients to establish

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Beltran, Makenzi. "Measuring Nitrogen Transformation in Wastewater Impacted Streams Using In-Situ Benthic Chambers." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7437.

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Acrylic chambers and metal frames were installed at the sediment-water interface of streams impacted by the effluent from wastewater reclamation facilities in order to determine nitrogen rates for nitrification, denitrification, assimilation, ANAMMOX, and DNRA. Each chamber was dosed with an isotopic form of nitrate (15NO3 - ), and both isotopic (15N) and non-isotopic (14N) samples were collected. The project locations included East Canyon Creek near the East Canyon Wastewater Reclamation Facility in Park City, Utah and Box Elder Creek near the Brigham City Wastewater Treatment Plant in Brigha

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44

Greenberg, Marc Samuel. "Defining Benthic Organism Exposure: Bioavailability and Effects of Non-Polar Organics." Wright State University / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=wright1074096654.

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45

McElroy, Anne Elizabeth. "Benz(a)anthracene in benthic marine environments : bioavailability, metabolism, and physiological effects on the polychaete Nereis virens /." Woods Hole, Mass. : Woods Hole Oceanographic Institution, 1985. http://hdl.handle.net/1912/3134.

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46

Dunn, Joseph G. "Comparative analysis of the benthic infauna and sediment for two small estuaries in Connecticut /." Click for abstract, 1998. http://library.ctstateu.edu/ccsu%5Ftheses/1488.html.

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Thesis (M.S.)--Central Connecticut State University, 1998.<br>Thesis advisor: Dr. Clayton Penniman. " ... in partial fulfillment of the requirements for the degree of Master of Science in Biology." Includes bibliographical references (leaves 59-63).

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47

Long, William Christopher. "Hypoxia and Macoma balthica : ecological effects on a key infaunal benthic species /." W&M ScholarWorks, 2007. http://www.vims.edu/library/Theses/Long07.pdf.

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48

Grannis, Betsy M. "Impacts of Mobile Fishing Gear and a Buried Fiber-Optic Cable on Soft-Sediment Benthic Community Structure." Fogler Library, University of Maine, 2005. http://www.library.umaine.edu/theses/pdf/GrannisBM2005.pdf.

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49

Fajemila, Olugbenga Temitope [Verfasser]. "Benthic Foraminifera Assemblages from Shallow-Water Ecosystems: Implications for Environmental Assessment and Monitoring / Olugbenga Temitope Fajemila." Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/1154485854/34.

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50

Chiziane, Hércio Issac Patrício. "Analysis of morphometric attributes of benthic nematodes as descriptors of the different ecological conditions." Master's thesis, ISA/UL, 2018. http://hdl.handle.net/10400.5/17979.

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Mestrado em Gestão e Conservação dos Recursos Naturais - Instituto Superior de Agronomia / Universidade de Évora<br>Free-living nematodes have been and are continually considered excellent bioindicators by several authors. Their high structural and functional diversity makes them more diversified and numerically dominant in aquatic habitats, with a wide distribution ranging from untouched habitats to highly polluted habitats. This fact as called the attention of many researchers who in turn motivated and promoted their use in the evaluation of the quality of water bodies. Farther, studies show

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