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Tesis sobre el tema "Benthic algae"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Kahlert, Maria. "Biomass and Nutrient Status of Benthic Algae in Lakes." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-5097-0/.

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2

Shamsudin, L. B. "The benthic algae of the River Itchen with particular reference to epilithic algae and epilithic algae on selected macrophytes." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375372.

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3

Novitski, Linda Nicole. "BENTHIC ALGAL COMMUNITY STRUCTURE ALONG AN ELEVATIONAL AND CHEMICAL GRADIENT IN THE HAZEL CREEK WATERSHED, GREAT SMOKY MOUNTAINS NATIONAL PARK." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1155742200.

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4

McGee, Dorien Kymberly. "Morphologic comparisons of shallow and deepwater benthic marine diatoms of Onslow Bay, North Carolina /." Electronic version (PDF), 2005. http://dl.uncw.edu/etd/2005/mcgeed/dorienmcgee.pdf.

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5

Adams, John Anthony. "Benthic calcareous algae as Jurassic marine temperature indicators in Western Europe." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/55372/.

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The determination of calcareous chlorophyte distributional limits is via temperatures---namely isocrymal limits, because the green algae are very susceptible to cold temperatures. The calcereous green algae are today and were in the past, one of the most sensitive and useful environmental indicators. As well as being useful in distribution analysis, they are a useful part of biotic analysis in general. Calcareous green algae are mostly, but not wholly tropical in nature---they are found in shallow marine environments up to their range extent of just into temperate water masses (12°C isocry

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6

Roberts, Emyr Martyn Tomas. "Tidal modulation of seabed light and its implications for benthic algae." Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/tidal-modulation-of-seabed-light-and-its-implications-for-benthic-algae(9842ea2e-2c3f-47c7-8a2e-2f0af199b393).html.

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The light climate at the seabed of shallow, tidal seas is extremely variable, and light is, therefore, often the most important abiotic factor pertaining to primary production in coastal benthic ecosystems. The influence of the tide on seabed light, and thus photosynthesis, has received limited attention in the scientific literature, despite being potentially very substantial. In this thesis, three physical aspects of tidal modulation of seabed light are investigated: (1) temporal (i.e., springs-neaps) patterns induced by the tide in daily total seabed light; (2) the net effect of the tide (e.

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7

Mills, David Kevin. "Productivity and distribution of benthic microalgae in the Forth estuary." Thesis, Heriot-Watt University, 1985. http://hdl.handle.net/10399/1649.

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8

Manzoni, Ginevra. "Possible effects of the invasive algae Caulerpa cylindracea on the benthic assemblages." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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In the Mediterranean Sea, the spread of the invasive algae Caulerpa cylindracea appears to be one of the most severe threat to the biodiversity of the coralligenous benthic communities. The magnitude of its effects may be modulated by the features of recipient communities, considering the high variability in species composition and relative abundance that characterize these biogenic reefs. The structure of benthic assemblages, taxa abundances and species diversity were investigated using a manipulative approach at three study sites in Elba Island and applying a multifactorial experimental desi

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9

Liess, Antonia. "Nutrient Stoichiometry in Benthic Food Webs – Interactions Between Algae, Herbivores and Fish." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6933.

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10

Johnson, Vivienne R. "A study of marine benthic algae along a natural carbon dioxide gradient." Thesis, University of Plymouth, 2012. http://hdl.handle.net/10026.1/1230.

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Increasing atmospheric CO2 is causing unprecedented changes in seawater chemistry, yet the uncertainty of the ecological response to these projected changes, termed ‘ocean acidification’, remains considerable at present. To predict the effects of these changes, we need to improve our understanding of the responses of marine primary producers since these drive biogeochemical cycles and determine the structure and function of benthic habitats. The majority of experiments on the effects of ocean acidification on photoautrophs to date have mainly focused on oceanic microalgae, leaving benthic asse

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11

Martín, Martín Rafael Pablo. "Benthic marine algae from South Shetland Islands (Antarctica): biodiversity and evolutionary patterns." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673828.

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The present work focuses on different aspects related to the Antarctic seaweed. As the main primary producers of the coastal areas of Antarctica, this group of organisms play a key role in shaping the biological communities and the ecological dynamics of Antarctic shores. However, compared to other groups of Antarctic organisms or the seaweed communities of other regions of the world, Antarctic macroalgae remain less studied. This is especially true in several areas of knowledge as their actual biodiversity, their evolutionary history and patterns, some aspects of their ecology or the total ex

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12

Basic, Dunja. "Grazer control on benthic algae in the Berg River, Western Cape, South Africa." Bachelor's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/26088.

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Benthic environments in streams are areas of high biological activity where primary producers and consumers interact with each other and the environment. Various factors such as light, nutrient availability and temperature affect algal biomass accumulation however disturbance factors and grazing lead to biomass losses as well as changes in the species composition and densities of algae. There are little, if any, studies done on the effects of grazers on benthic algae in South African rivers and as such, this experiment was done in the Berg River, in the Western Cape of South Africa. The aim wa

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13

McKenny, Claire. "The Diversity of macroinvertebrate grazers in streams relationships with the productivity and composition of benthic algae /." Click here to access, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060308.131239.

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14

Zacher, Katharina. "Effects of UV radiation on Antarctic benthic algae : with emphasis on early successional stages and communities = Effekte von UV-Strahlung auf antarktische benthische Algen : mit schwerpunkt auf jungen Entwicklungsstadien und Gemeinschaften /." Bremerhaven : Alfred-Wegener-Institut für Polar- und Meeresforschung, 2007. http://www.loc.gov/catdir/toc/fy0804/2008422507.html.

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15

Tsoi, Wing Ying. "Community Dynamics of the Benthic Algae in Cobble Based Streams in South-East Quensland." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/367032.

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Benthic algae are largely present within a polysaccharide matrix called ‘biofilm’ where they coexist as a community with heterotrophs such as bacteria, fungi and other organic matter that attaches to substrates. In upland stream ecosystems, benthic algae serve as a basal food source in riverine food webs and immobilise nutrients from the water column via the processes of assimilation and remineralisation. From a conservation biodiversity perspective, upland benthic algal assemblages are not only a biodiversity hot spot for rare, endangered and endemic freshwater species but also a source of pr

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16

Spears, Bryan M. "Benthic-pelagic nutrient cycling in shallow lakes : investigating the functional role of benthic microalgae." Thesis, University of St Andrews, 2007. http://hdl.handle.net/10023/371.

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Microbes, living on the boundary between the sediment and the water-column in lakes, can play a pivotal role in governing the magnitude and frequency of nutrient cycling. The purpose of this research was to focus on the role of benthic microalgae in regulating such processes and to identify spatial and temporal characteristics in their function. Approaches included the quantification of sediment nutrient concentrations (particularly P fractionation), estimates of equilibrium phosphate concentrations (EPC0) (resuspended and undisturbed sediment estimates), and assessment of the benthic microalg

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17

Bray, Jonathan Peter. "The ecology of algal assemblages across a gradient of acid mine drainage stress on the West Coast, South Island, New Zealand." Thesis, University of Canterbury. Biological Sciences, 2007. http://hdl.handle.net/10092/1492.

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Physicochemical factors, algal diversity, taxonomic composition and standing crop were investigated across a broad gradient of AMD stress in streams and rivers. 52 sites were surveyed in the vicinity of Greymouth, Reefton, Westport and Blackball, on the West Coast, South Island. Seven sites in the Reefton area were sampled from April 2006 - February 2007 to establish changes over time in benthic algal communities of AMD and reference streams. Longitudinal change and ecosystem recovery were also investigated by sampling eight sites down Devils Creek, Reefton, and two of its tributaries. AMD has

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18

Schwinnen, Chad Robert. "Impacts of a Herbivorous Fish, Campostoma anomalum (central stoneroller), on Nitrogen Fixation by Benthic Algae." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1284993489.

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19

Yang, Yao. "The ecology of a herbivorous fish (Pseudogastromyzon myersi: balitoridae) and its influence on benthic algal dynamics in four Hong Kong streams." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41508646.

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20

Pye, Karen. "The effects of eutrophication on the marine benthic flora of Langstone Harbour, South Coast of England." Thesis, University of Portsmouth, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343337.

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21

McKenny, Claire. "The Diversity of Macroinvertebrate Grazers in Streams: Relationships With the Productivity and Composition of Benthic Algae." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/368092.

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There has been much interest in the last decade concerning the factors that influence diversity, especially how diversity and ecosystem processes may be linked. This study was based in small, cobble streams in South East Queensland. Its aim was to determine how the diversity and composition of consumers (the grazer guild) is influenced by both the production and composition of benthic algae, at different spatial scales. It also aimed to ascertain whether this response differs among grazer sub guilds with different dispersal capabilities. Ten sites in the Upper Brisbane and Mary catchments were

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22

Stephens, Sonia H. "Effects of light and nutrients on the community composition of Benthic Algae in a Hawaiian stream." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7014.

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23

McKenny, Claire, and n/a. "The Diversity of Macroinvertebrate Grazers in Streams: Relationships With the Productivity and Composition of Benthic Algae." Griffith University. Australian School of Environmental Studies, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060308.131239.

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There has been much interest in the last decade concerning the factors that influence diversity, especially how diversity and ecosystem processes may be linked. This study was based in small, cobble streams in South East Queensland. Its aim was to determine how the diversity and composition of consumers (the grazer guild) is influenced by both the production and composition of benthic algae, at different spatial scales. It also aimed to ascertain whether this response differs among grazer sub guilds with different dispersal capabilities. Ten sites in the Upper Brisbane and Mary catchments were

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24

Tan, Xiang. "Environmental Influences on Benthic Algal Communities and their Application for Biomonitoring of Australian and Chinese Rivers." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/367601.

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Benthic algae a re one of the most important primary producers i n lotic ecosystems, and changes i n their community structure and function (e.g., metabolism) will influence other organisms at higher trophic levels or even the entire aquatic ecosystem through bottom-up effects. Since they are known to be sensiti ve to changes i n ambient conditions, benthic algae and especially diatoms have been widely used as i ndicators of environmental changes in aquatic ecosystems, particular ly i n E urope , through developi ng diatom-based indices. However, these indices have not been widely

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25

Brandt, Michael. "Factors limiting benthic algal abundance in Virginia streams of the Coastal Plain." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1878.

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Algae are important components of stream food webs and often used in biomonitoring assessments. Little is known regarding the factors that limit their abundance in streams of the VA Coastal Plain. The surficial geology of the Coastal Plain is predominately sandy deposits which comprise the dominant substrate in streams of this region. In a comparative study of five streams located near the VCU Rice Center, we quantified substrate composition, light availability, and nutrient concentrations to assess their relative importance in determining benthic algal abundance. The proportion of stream

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26

Thomas, Evan William. "THE ROLE OF WAVE DISTURBANCE ON LENTIC, BENTHIC ALGAL COMMUNITY STRUCTURE AND DIVERSITY." Bowling Green State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1178127686.

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27

Bambakidis, Theodore. "Changes in Benthic Algal Community Structure Following an Unpredictable Stream-Wide Desiccation Event." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1245682807.

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28

Smith, Francine Mary Jorna. "Investigating Cyanotoxin Production by Benthic Freshwater Cyanobacteria in New Zealand." Thesis, University of Canterbury. Chemistry, 2012. http://hdl.handle.net/10092/6932.

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Cyanobacteria can form nuisance proliferations and produce large concentrations of toxins that pose a health hazard. This thesis investigates cyanotoxin production by New Zealand benthic cyanobacteria. Cyanobacteria were sampled from lakes, reservoirs, streams, and rivers. Thirty-five strains were isolated into culture and screened for genes involved in the biosynthesis of common cyanotoxins. Positive results were confirmed and cyanotoxin concentrations quantified using analytical chemistry techniques. Genes involved in anatoxin a/homoanatoxin a biosynthesis were detected in nine out of ten P

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29

Chinnock, Paul. "Calcareous benthic invertebrates and algae of the cool-water shelves of W.A. and S.A. : their significance in paleoecological studies /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09SB/09sbc539.pdf.

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Thesis (B. Sc.(Hons.))--University of Adelaide, Dept. of Geology and Geophysics, 1997?<br>Australian National Grid reference SF-49 - 12,16;SG -49 - 4,8,12; ; SG - 50- 5,9,13 SH - 49 - 4; SH - 50-1,5,9,14; SI - 50- 5,9,12,14,15 SI - 51- 7,10,11; SI -52- 1,2; SI - 53- 16 SI - 54- 9,13 1:250 000. Includes bibliographical references (leaves 47-51).

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30

Vasconcelos, Francisco Rivera. "Effects of warming and browning on benthic and pelagic ecosystem components in shallow lakes." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-133327.

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The majority of lakes on Earth are shallow, unproductive and located at high latitudes. These lakes are experiencing big changes due to climate change, where two environmental drivers operate simultaneously, browning and warming. How they affect lake ecosystems is not well understood. Here, I addressed this issue by using a theoretical and an experimental approach. In particular, I generated model predictions and compared them with the results of a realistic large-scale experiment, where browning and warming were manipulated in a factorial design. In addition, model outcomes were compared with

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31

Vigilant, Veronica Lynn. "The occurrence of the harmful algae bloom toxin, domoic acid, in nearshore and offshore benthic communities of Monterey Bay, California /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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32

Andersson, Eva. "Benthic-Pelagic Microbial Interactions and Carbon Cycling in Clearwater Lakes." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5798.

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33

Yang, Yao, and 楊瑤. "The ecology of a herbivorous fish (Pseudogastromyzon myersi: balitoridae) and its influence on benthic algal dynamics in four HongKong streams." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41508646.

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34

Krenz, Robert John III. "Organic Matter Processes of Constructed Streams and Associated Riparian Areas in the Coalfields of Southwest Virginia." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73430.

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Central Appalachian headwater streams in coalfield areas are prone to mining disturbances, and compensatory mitigation is required in cases of documented impacts. Stream construction on reclaimed mines is a common mitigation strategy. Streams constructed as compensatory mitigation are meant to restore structural and functional attributes of headwater streams and are often evaluated by measuring structural ecosystem characteristics. However, replacement of stream ecosystem functions is essential for mitigation of mining disturbances from an ecosystem perspective. This research compared selected

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35

Armenio, Patricia. "Nutrient contributions from Dreissena spp. to Lyngbya wollei and Cladophora glomerata." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1294506836.

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36

Davis, Katie S. "Use of a Towed Camera System along the west Florida shelf: A Case Study of the Florida Middle Grounds Benthic Marine Communities." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7494.

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As technologies advance the study of ocean dynamics, new approaches to vexing problems of scale and process are becoming more widely available. Originally conceived as a tool primarily for indexing the abundance of near-bottom fishes, the Camera-based Assessment and Survey System (C-BASS) may also be an effective tool for monitoring benthic invertebrate resources vulnerable to natural and anthropogenic perturbations, and for characterizing the composition of benthic communities to inform spatial management. Using still images derived from the C-BASS video of benthic transects within the Florid

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37

Ralston, S. "A study of the ecology of benthic algae using artificial substrates in an irrigation canal of the Breede River, Western Cape, South Africa." Thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/25987.

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38

Schneck, Fabiana. "Efeitos da rugosidade de substratos, distúrbios físicos e organismos pastejadores na estruturação de assembleias de algas bênticas e na biomassa perifítica em um riacho subtropical : uma abordagem experimental." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49267.

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Os estudos apresentados nesta tese tiveram como objetivo compreender aspectos da organização de assembleias de algas bênticas em riachos. Foi avaliado especificamente o efeito da heterogeneidade de habitat na escala de rugosidade de substratos e sua interação com distúrbios hidrológicos e organismos pastejadores (grazers). Utilizou-se uma abordagem experimental in situ com substratos lisos e rugosos (com fendas) constituindo os tratamentos. Os experimentos foram conduzidos no Rio do Marco, um riacho de quarta ordem na região dos Campos de Cima da Serra, em São José dos Ausentes, Rio Grande do

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39

Lange, Erik David. "Investigation of Microcystis Cell Density and Phosphorus in Benthic Sediment and Their Effect on Cyanobacterial Blooms on Western Lake Erie in the Summer of 2009." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1272581269.

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40

Astill, Helen Lee. "The role of benthic macroalgae in sediment-water nutrient cycling in the Swan-Canning estuarine system, Western Australia." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2000. https://ro.ecu.edu.au/theses/1344.

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This study documented the macroalgal assemblages of the Swan-Canning Estuarine System (SCES) over a two year period, and the influences of several environmental parameters on the assemblages. In addition, the Impacts of unattached macroalgal accumulations on benthic nutrient fluxes and microbial communities were investigated. Benthic macroalgal assemblages and physico-chemical regimes were monitored in the SCES, to determine temporal and spatial changes in macroalgal communities and the influence of environmental factors in these changes. Physico-chemical regimes demonstrated strong seasonal c

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41

Spångfors, Helena. "Malformation in different species of benthic diatoms in three herbicide polluted streams in southern Sweden." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34915.

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Målet med den här studien var att undersöka kiselalger och dess eventuella missbildningar i tre vattendrag i södra Sverige - Höje å, Skivarpsån och M42. Kiselalger används som bioindikator för vattenkvalitet i hela Europa, men de befintliga kiselalgsindexen visar inte eventuell förekomst av miljöfarliga ämnen. Det har dock visats att en förekomst > 1 % av missbildade kiselalger indikerar påverkan av miljöfarliga ämnen, såsom pesticider och tungmetaller. Denna studie är en av få som har undersökt kiselalgers missbildningar i vattendrag som är mer eller mindre påverkade av herbicider. Sex pro

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42

Katona, Leon R. "Diversity and Function of Algal Biofilms in the Laurentian Great Lakes." Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1622215756216238.

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43

Nauman, Callie A. "The Spatial and Temporal Distribution and Environmental Drivers of Saxitoxin in Northwest Ohio." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1589644025246293.

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44

Hooper, Garnet James. "Effects of algal structure on associated motile epifaunal communities." Thesis, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268881.

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45

McLenaghan, Natalie Ann. "Benthic macroinvertebrate diversity in a shallow estuary : controls on nutrient and algal dynamics /." Online version of thesis, 2009. http://hdl.handle.net/1850/9704.

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46

Walker, Robert A. "Photosynthesis and Respiration in Five Species of Benthic Foraminifera that Host Algal Symbionts." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/1287.

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Oxygen production and consumption were measured in five species of benthic foraminifers using a "Clark-type" oxygen electrode. Net photosynthesis and respiration were calculated and normalized to both μg Chl a and mm² upper surface area for the chlorophyte-bearing soritid foraminifers, Archaias angulatus and Cyclorbiculina compressa, and the diatom-bearing amphisteginids, Amphistegina gibbosa, A. lessonii and A. radiata. Photosynthesis/Irradiance curves were generated by fitting data to the hyperbolic tangent equation P = Pmax tanh (α I/ Pmax). Derived photosynthetic parameters, Pmax, α, Ik we

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47

Rull, Jordi. "Algues bentòniques marines de Namíbia." Doctoral thesis, Universitat de Barcelona, 1999. http://hdl.handle.net/10803/673149.

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Aquest treball no pretén ser un estudi exhaustiu sobre la flora bentònica marina de Namíbia, sinó simplement una base per portar-lo a terme en un futur. El que sí pretén, en canvi, és oferir una recopilació de tota la informació que hi ha fins a aquest moment sobre el tema i contribuir al coneixement de la flora bentònica marina de Namíbia, proporcionant-ne noves dades sobre la composició i biogeografia, a part de descripcions detallades i valoracions crítiques de moltes de les especies que la integren. En una època en què les noves tecnologies fan orientar la botànica cap a l'estud

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48

Comeaux, Jay Louis. "Effects of copper on benthic communities in artificial microcosms." Diss., Virginia Tech, 1996. http://hdl.handle.net/10919/40317.

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49

Portune, Kevin Joseph. "Examinations on harmful algal cyst distribution, germination, and reactive oxygen species production within Delaware's Inland Bays, USA." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 210 p, 2008. http://proquest.umi.com/pqdweb?did=1601513961&sid=6&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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50

Witte, Andrew Dennis. "Benthic algal communities of shallow reefs in the Eastern Cape: availability of abalone habitat." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/12032.

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Marine ranching has been identified as an alternative to traditional aquacultural rearing and growing organisms for consumption. In the Eastern Cape, abalone ranching is a new and experimental industry. The aims of the research were to: first develop a GIS model to assist management in site selection for abalone seeding; and secondly to develop and standardize the sampling methodology in order to ground truth the sites, and assist in the monitoring and habitat identification of abalone. The GIS model developed in Chapter 3 was created using an unsupervised classification and fuzzy logic approa

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