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Dissertations / Theses on the topic 'Benthic invertebrate community'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Laureta, L. V. "Trophic dynamics of a benthic community, with particular reference to the ecological energetics of Corbula gibba (Olivi)." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381336.

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2

Bennett, Barbara Loraine Jr. "Land use influences on benthic invertebrate assemblages in southern Appalachian agricultural streams." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36940.

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I investigated the role of land use in structuring benthic invertebrate assemblages in agricultural streams in the French Broad River drainage in western North Carolina. I sampled six agricultural streams (3 with cleared headwaters and 3 with forested headwaters) at three points along a gradient (headwaters, a midpoint, and a downstream site). At each site, I measured a variety of physico-chemical parameters, including temperature, chlorophyll a, discharge, nutrients, and suspended solids. Invertebrates were sampled at all sites in October 1996 and April 1997. Riparian vegetation was asses

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3

Wells, Elizabeth Hamilton. "Evolutionary novelty and naivete in invertebrate predator-prey interactions in a benthic marine community." Thesis, University of California, Davis, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3565574.

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<p> In the first chapter of this dissertation, I explore the role of shared evolutionary history in determining predation preferences of a suite of three generalist muricid whelks preying on oysters and mussels. Various theories such as the enemy release and novel weapons hypotheses predict how evolutionary novelty will affect predator-prey interactions, but it is not clear how applicable these theories are to interactions between generalist predators and familiar prey types. In addition to determining whether the one native and two invasive whelks preferred to consume evolutionarily familiar

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4

Wright, Sara E. "Spatial structuring of benthic invertebrate communities within and among wooded headwater stream networks." Youngstown State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1329070085.

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5

Calder-Potts, Ruth Naomi. "The biological and ecological impacts of hypoxia on coastal benthic communities." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/9352.

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Traditionally, hypoxia has been defined as the situation where DO levels have fallen below 2.0 mg O2 L-1, but increasing evidence suggests that this low level of DO is inadequate to describe the onset of hypoxia impacts for many organisms. Consequently, there is a need for a greater understanding of how ‘moderate’ alterations in DO levels will affect ecosystem processes and functionality, specifically through behavioural and physiological alterations at the organism and community level. This thesis reports on mesocosm experiments which were conducted to examine the effects of moderate ( > 3.0

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6

Pohe, Stephen Robert. "Aquatic invertebrate fauna of Matapouri, Northland." Click here to access this resource online, 2008. http://hdl.handle.net/10292/425.

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A study of the aquatic invertebrate communities from two locations (Location 1 and Location 2) within the Matapouri catchment in Northland, New Zealand, was conducted to assess community structure in differing local-scale habitats. Four data collection methods were utilised generating 33,058 adult or larval invertebrates. The sampling methods comprised benthic kick-sampling, sticky trapping, light trapping, and emergence trapping. For the sticky trapping and light trapping, sampling was carried out at three different sites (Sites 1–3) within each location. The sites were situated within three

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7

Durkota, Jessica M. "Groundwater ecology : invertebrate community distribution across the benthic, hyporheic and phreatic habitats of a chalk aquifer in southeast England." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10040830/.

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Groundwater is an important resource for drinking water, agriculture, and industry, but it also plays an essential role in supporting the functioning of freshwater ecosystems and providing habitat for a number of rare species. However, despite its importance, groundwater ecology often receives little attention in environmental legislation or research. This study aims to improve our understanding of the organisms living in groundwater-dependent habitats and the influence of environmental conditions on their distribution. Invertebrate communities occurring in the benthic, hyporheic and phreatic

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8

Gumede, Sabelo Victor. "A study of benthic invertebrate community structure in selected areas on the continental shelf off KwaZulu-Natal, South Africa." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/6261.

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9

McChesney, Stephen. "The benthic invertebrate community of the intertidal mudflat at the Mai Po Marshes Nature Reserve, with special reference to resources formigrant shorebirds." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31214435.

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10

McChesney, Stephen. "The benthic invertebrate community of the intertidal mudflat at the Mai Po Marshes Nature Reserve, with special reference to resources for migrant shorebirds /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18061977.

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11

Averhed, Björn. "Kan förändringar i bottenfaunan påvisas två år efter en bäckrestaurering?" Thesis, Linköping University, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-57866.

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<p>The aim of this work is to analyze if a change in the benthic community can be detected two years after a restoration of a small stream. The samples were taken in a small stream at Tinnerö Eklandskap just south of Linköping. In addition to the restored area, two reference sites upstream and downstream of the restored area were sampled to compare to the restored site. The method used for sampling of benthic fauna in the stream was kick sampling. ASPT, Berger-Parker and Renkonen-indices were used to find out if there was any difference between the reference areas and the restored area. In add

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12

Mercer, Jennifer Lynne. "Changes in the benthic invertebrate community and the feeding, growth, and PCB accumulation in the three littoral zone fishes following a zebra mussel invasion in Rice Lake, Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30226.pdf.

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13

Campbell, Rebecca Elisabeth. "Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?" Thesis, University of Canterbury. School of Biological Sciences, 2011. http://hdl.handle.net/10092/5094.

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Dendritic stream networks are inherently spatially and hierarchically structured, but the effects of this structure on stream communities are largely unknown. My aim was to investigate spatial patterns in stream networks using extensive spatial sampling of both adult and benthic macroinvertebrates in four stream networks on the West Coast of the South Island, New Zealand. Using spatial modelling and analyses, I answered questions about appropriate spatial measurements to capture ecological processes in stream networks, metacommunity processes at different scales in space and time, and how loca

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14

Meyer, Kirstin. "Community assembly of benthic invertebrates on island-like marine hard substrata." Thesis, University of Oregon, 2016. http://hdl.handle.net/1794/20686.

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Most of the seafloor is soft sediment, so hard substrata are isolated and island-like. In this dissertation, I explore how species distribution patterns on isolated marine hard substrata resemble terrestrial island communities, drawing on classical island biogeography theory and assembly rules, and describe how benthic invertebrate communities assemble in these island-like habitats. Higher species richness occurred on larger substrata (dropstones and shipwrecks), paralleling terrestrial island communities. However, while larger islands have greater habitat diversity and primary productivit

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15

Meyer, Kirstin S. "Community assembly of benthic invertebrates on island-like marine hard substrata." Thesis, University of Oregon, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10192050.

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<p>Most of the seafloor is soft sediment, so hard substrata are isolated and island-like. In this dissertation, I explore how species distribution patterns on isolated marine hard substrata resemble terrestrial island communities, drawing on classical island biogeography theory and assembly rules, and describe how benthic invertebrate communities assemble in these island-like habitats. Higher species richness occurred on larger substrata (dropstones and shipwrecks), paralleling terrestrial island communities. However, while larger islands have greater habitat diversity and primary productivit

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16

Word, Jack Q. "The infaunal trophic index, a functional approach to benthic community analyses /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/5289.

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17

Rogers, Megan Bryn. "Woody debris and macroinvertebrate community structure of low-order streams in Colville National Forest, Washington." Connect to this title online, 2003. http://www.dissertations.wsu.edu/Thesis/Fall2003/m%5Frogers%5F121503.pdf.

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18

Orzetti, Leslie LuChar. "Stream community structure an analysis of riparian forest buffer restoration in the Chesapeake Bay watershed /." Full text available online (restricted access), 2004. http://images.lib.monash.edu.au/ts/theses/Orzetti.pdf.

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19

Kilfoyle, Audie Kirk. "Exploring the Potential for Artificial Reefs in Coral Reef Restoration: Responses and Interactions of Associated Biota to Varying Experimental Treatments in the Mexican Caribbean." NSUWorks, 2017. http://nsuworks.nova.edu/occ_stuetd/440.

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Coral reefs are being negatively impacted by various causes worldwide, and direct intervention is often warranted following disturbance to restore or replace lost ecosystem structure and function. An experimental coral reef restoration study involving standardized artificial reef modules (ReefballsTM) was conducted in Mexico’s Yucatan Peninsula in the towns of Puerto Morelos and Akumal. The purpose was to explore the use of artificial structure for restoration and mitigation applications in a highly diverse and dynamic Caribbean coral reef environment by applying and evaluating the performance

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20

Hsu, Hsien-Fu, and 徐顯富. "Temporal and spatial changes of benthic invertebrate community in Taoyuan algal reefs." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/85386061789904912429.

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碩士<br>國立中興大學<br>生命科學系所<br>102<br>Algal reefs located in Taoyuan have the largest cover area in Taiwan. Invertebrates are important in coastal ecosystems, they are foods for high consumers and affect high consumers’ distribution and abundance. There were four sampling area along the coast of Taoyuan, including Sinwu river (SW), Datan power plant (DT), Guanyin beach (GY) and Shulinzih (SL). In this four sampling area, two transects of each area were surveyed for the distribution and abundance of epifauna in four seasons of a whole year from September 2012 to June 2013. In addition, a piece of re

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21

St, John Margaretha Ann. "The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario." Thesis, 2009. http://hdl.handle.net/1807/17447.

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Iron mining began in Wawa, Ontario in the late 1800s and ceased in 1998. The sintering process of iron pyrite produced sulfur dioxide which led to the acidification of nearby lakes. Benthic macroinvertebrate samples were collected from lakes along a gradient of historical impairment in Wawa to examine the extent to which the benthos of the lakes would separate along the historical impairment gradient. The results show that the lakes are not separated along a gradient of impairment, and acid-intolerant taxa were collected in previously acidified lakes. There was no ameliorative intervention

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22

Dai, Li, and 戴立. "A study of benthic invertebrate community and environmental factors of salty artifical wetlands." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/27347582845949385409.

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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>99<br>The objectives of this study are to investigate the biodiversity in different unit of treatment systems, and to detect the function in a salt water type of constructed wetland. We investigated the benthic invertebrate community in different stage from 2010 July to 2011 May, while the parameters of TKN, NH3-N, organic nitrogen, TP, TOC and particle size were measured in the sediments of each sampling site at the same time in the wetland system. The results show that concentrations of organic matter and nutrients in the sediments were increased with time mon

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23

Dewas, Severine Emmanuelle Alexandra. "Benthic-invertebrate diversity of Tucetona laticostata (Mollusca: Bivalvia) biogenic substrata in Hauraki Gulf." 2008. http://hdl.handle.net/10292/454.

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Marine ecosystems are increasingly being subject to human impact from diverse recreational and commercial activities, not necessarily restricted to those of a marine nature. This has significant implications for biodiversity. The large dog cockle, Tucetona laticostata, once occurred live in Rangitoto Channel, Hauraki Gulf, although this species no longer appears to occur there, most likely as a consequence of repeated dredging and channel excavation and continued siltation. Tucetona laticostata still occurs in a few isolated pockets of sea bed throughout Hauraki Gulf, particularly off Otata Is

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24

Linden, Pieter van der. "The functional composition of the benthic invertebrate community of the Mondego estuary : insights within the functioning of this ecosystem." Master's thesis, 2011. http://hdl.handle.net/10316/19928.

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Dissertação de mestrado em Ecologia, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>The main aim of this study was to investigate the functional composition of the subtidal benthic invertebrate communities of the Mondego estuary and thus contributing to a better understanding of the response of these communities to the pressures within this type of ecosystem. We characterized the environmental conditions and investigated the spatial and seasonal distribution of the communities by means of traditional taxonomic analysis and BTA. Moreover, we investigated the re

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25

Gaber, Leon Sebastion. "Measuring the impact of agricultural land use intensification on benthic macroinvertebrate community dynamics within an agricultural watershed." Thesis, 2008. http://hdl.handle.net/1828/2564.

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Activities associated with agricultural land use intensification, one of the primary sources of anthropogenic stress to aquatic ecosystems, degrade freshwater stream health and present a significant challenge to resource managers in terms of monitoring and remediation. Biomonitoring of benthic macroinvertebrates, a common method of measuring the impact of anthropogenic stress on freshwater stream health, has been used to characterize the impact of agricultural activities. However, in order for this technique to be useful to resource managers in the protection of freshwater streams from agricul

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26

Gerard, Kerry J. "The effects of stream restoration and sediment removal on community dynamics and secondary production rates of benthic invertebrates in Juday Creek, Indiana." 2005. http://etd.nd.edu/ETD-db/theses/available/etd-11042008-101621/.

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