Relevant bibliographies by topics / Freshwater ecolog

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Freshwater ecolog'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Freshwater ecolog"

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Neal, C., S. J. Ormerod, S. J. Langan, T. R. Nisbet, and J. Roberts. "Sustainability of UK forestry: contemporary issues for the protection of freshwaters, a conclusion." Hydrology and Earth System Sciences 8, no. 3 (June 30, 2004): 589–95. http://dx.doi.org/10.5194/hess-8-589-2004.

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Abstract. This paper closes the Special Issue of Hydrology and Earth System Sciences entitled "Sustainability of UK forestry: contemporary issues for the protection of freshwaters" by presenting conclusions from the contributions together with associated research findings. The volume deals largely with issues of upland water quality and biology in the context of environmental research and management. The studies are linked to an array of issues which affect the sustainability of UK forestry in the context of the protection of freshwaters, freshwater ecosystems and freshwater organisms. These issues include atmospheric and climate driven factors (acidification from atmospheric pollutants, critical loads, climate-change and climate variability), forestry practice and hydrobiogeochemical processing both within-catchments and within-rivers. The findings lie within the context of the science and relate to environmental management. Keywords: water quality, forestry, stream ecology, acidification, critical loads, nutrients
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Ferreira, Elielson Francisco Fernandes, and Fábio Henrique Portella Oliveira. "ECOLOGIA DAS POPULAÇÕES DE GEITLERINEMA E PLANKTOTHRIX EM ECOSSISTEMA DE ÁGUA DOCE." Revista Interfaces: Saúde, Humanas e Tecnologia 7, no. 2 (September 30, 2019): 274–81. http://dx.doi.org/10.16891/2317-434x.v7.e2.a2019.pp274-281.

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Bean, Colin W. "FRESHWATER FISHERIES ECOLOGY." Journal of Fish Biology 88, no. 4 (April 2016): 1675–76. http://dx.doi.org/10.1111/jfb.12937.

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Watkins, Siobhan C., Neil Kuehnle, C. Anthony Ruggeri, Kema Malki, Katherine Bruder, Jinan Elayyan, Kristina Damisch, et al. "Assessment of a metaviromic dataset generated from nearshore Lake Michigan." Marine and Freshwater Research 67, no. 11 (2016): 1700. http://dx.doi.org/10.1071/mf15172.

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Bacteriophages are powerful ecosystem engineers. They drive bacterial mortality rates and genetic diversity, and affect microbially mediated biogeochemical processes on a global scale. This has been demonstrated in marine environments; however, phage communities have been less studied in freshwaters, despite representing a potentially more diverse environment. Lake Michigan is one of the largest bodies of freshwater on the planet, yet to date the diversity of its phages has yet to be examined. Here, we present a composite survey of viral ecology in the nearshore waters of Lake Michigan. Sequence analysis was performed using a web server previously used to analyse similar data. Our results revealed a diverse community of DNA phages, largely comprising the order Caudovirales. Within the scope of the current study, the Lake Michigan virome demonstrates a distinct community. Although several phages appeared to hold dominance, further examination highlighted the importance of interrogating metagenomic data at the genome level. We present our study as baseline information for further examination of the ecology of the lake. In the current study we discuss our results and highlight issues of data analysis which may be important for freshwater studies particularly, in light of the complexities associated with examining phage ecology generally.
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Gurung, Tek Bahadur. "Native fish conservation in Nepal: Challenges and opportunities." Nepalese Journal of Biosciences 2 (January 24, 2013): 71–79. http://dx.doi.org/10.3126/njbs.v2i0.7492.

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Habitat degradation and loss probably has been more responsible for the decline of native fish species. Nepalese fishes are one of main aquatic vertebrates which are yet to be studied for their occurrence, distribution and ecology, especially from western regions of the country. However, before complete understanding on native fishes, threat over their existence have been loomed by climate change, over fishing, pollution, alteration of natural habitats and poor understanding of fish ecology etc. Thus, publicizing the importance and knowledge of fish conservation has been one of the most important challenges. The other challenges are sustainability of quality and quantity of freshwaters which have been impacted. In such circumstance to overcome the problems, adoption of community or cooperative based conservation could be one of the best approaches for freshwaters and fish restoration. Optimistically, a national strategy on conservation of freshwater fish is desirable. Fish conservation has the opportunities to be used for multidimensional purposes. A success of single fish species might contribute substantially on local economy, if that could be used in aquaculture or angling for tourism industry. DOI: http://dx.doi.org/10.3126/njbs.v2i0.7492 Nepalese Journal of Biosciences 2 : 71-79 (2012)
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Angulo Sibaja, Arturo, Alex Molina Arias, Atsunobu Murase, Yusuke Miyazaki, William Albert Bussing, and Myrna Isabel López Sánchez. "Fishes from the Tusubres River basin, Pacific coast, Costa Rica: checklist, identification key and photographic album." Check List 11, no. 3 (May 28, 2015): 1666. http://dx.doi.org/10.15560/11.3.1666.

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A checklist of the fishes of the Tusubres River basin, Pacific coast of Costa Rica, compiled from field and museum surveys is herein presented. A total of 54 species, representing 47 genera and 27 families, were recorded. Peripheral species were dominant (64.8%), followed by secondary freshwater fishes (20.4%); primary freshwater fishes accounted only for 14.8% of the total fish diversity. Eleotridae (6 spp.), Gobiidae (6 spp.), Poeciliidae (5 spp.) and Characidae (4 spp.) were the most diverse. Two species (Caranx sexfasciatus, Carangidae; and Opisthonema libertate, Clupeidae) were new records for Costa Rican freshwaters, and two species (Gymnotus maculosus, Gymnotidae; and Lebiasina boruca, Lebiasinidae) was found to have expanded ranges. An identification key and a complete photographic album of all fish species recorded in the basin are presented. The results of this investigation provide a framework for future studies on biogeography, ecology and conservation on fishes from this area.
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Hodgson, Alan N. "The Ecology of Freshwater." African Zoology 35, no. 2 (October 2000): 301–2. http://dx.doi.org/10.1080/15627020.2000.11657104.

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Pentecost, Allan, Brian A. Whitton, and Christopher F. Carter. "Ecology and morphology of the freshwater red alga Chroothece in the British Isles." Algological Studies 143, no. 1 (December 23, 2013): 51–63. http://dx.doi.org/10.1127/1864-1318/2013/0137.

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Okamura, Beth. "The ecology of subdivided populations of a clonal freshwater bryozoan in southern England." Fundamental and Applied Limnology 141, no. 1 (December 23, 1997): 13–34. http://dx.doi.org/10.1127/archiv-hydrobiol/141/1997/13.

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Venohr, Markus, Simone D. Langhans, Oliver Peters, Franz Hölker, Robert Arlinghaus, Lewis Mitchell, and Christian Wolter. "The underestimated dynamics and impacts of water-based recreational activities on freshwater ecosystems." Environmental Reviews 26, no. 2 (June 2018): 199–213. http://dx.doi.org/10.1139/er-2017-0024.

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Recreational activities on, in, and along freshwaters (e.g., boating, bathing, angling) positively contribute to human well-being but can also concurrently stress aquatic ecosystems. While outdoor recreation, aquatic ecosystems, and human well-being form coupled social-ecological systems, inherent fluxes and interactions between these have rarely been properly quantified. This paper synthesizes information on links between water-based recreational activities, effects on freshwater ecosystems integrity and recreational quality, and proposes a novel framework for assessment and integrated management. This framework is based on understanding relationships between recreational quality, demand and use, and recreational use-induced impacts on ecosystem state and function, as well as ecological and social carrying capacities. Current management approaches of freshwater ecosystems addressing economic, environmental, or recreational aspects are poorly linked and harmonized, and are further constrained by inadequate information on the dynamics and densities of recreational uses. Novel assessment and monitoring methods are needed to capture the short-term peak dynamics of water-based recreational uses, and we argue social media could play an increasingly important role here. An integrative recreation ecology management concept combined with peak usage information has great potential to form the basis for next-generation management approaches of freshwater and other ecosystems.
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Dissertations / Theses on the topic "Freshwater ecolog"

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Clegg, Mark Robert. "Behavioural ecology of freshwater phytoplanktonic flagellates." Thesis, Lancaster University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403729.

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Österling, Martin. "Ecology of freshwater mussels in disturbed environments." Doctoral thesis, Karlstad University, Faculty of Social and Life Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-734.

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The number of species extinctions is increasing at an alarming rate. Long-lived freshwater mussels of the order Unionoida, which include a parasitic stage on a host fish, are highly threatened. Habitat degradation by turbidity and sedimentation is thought to be one major reason for their decline. The objective of this thesis was to examine recruitment patterns and identify the causes of the lack of recruitment in the threatened unionoid freshwater pearl mussel (Margaritifera margaritifera). In addition, I investigated the effects of turbidity on non-endangered dreissenid mussels, where turbidity was manipulated through use of bioturbating mayflies.

In a survey of 107 Swedish streams, mussel population size and trout density were both positively correlated to recruitment probability of M. margaritifera. A more in-depth study of the age-structure of nine populations revealed that four of these populations showed no signs of recruitment over the last ten years. Within-stream variation in recruitment was high as both mussels and trout had patchy distribution, and may be important for population regulation. Moreover, examination of different life stages revealed no differences in the gravid mussel stage or the stage when mussels infect salmonid fish. Instead, differences were observed for the juvenile, benthic stage, presumably related to differences in turbidity and sedimentation. High turbidity may affect filter-feeding efficiency of mussels and high sedimentation may reduce survival by clogging sediments, thereby altering, for example, oxygen and food conditions. In the study of the effects of turbidity, bioturbating mayflies increased turbidity and filter-feeding dreissenid mussels reduced turbidity. Mussel growth both decreased and increased with increasing turbidity, depending on sediment type.

Turbidity and sedimentation often impact entire stream systems, and a holistic, catchment-based management strategy may be needed to reduce the effects of sedimentation on freshwater pearl mussels. The effects of restoration take a long time and must start soon if recruitment of mussels is to be re-established. Restoration may also be more urgent in some streams than in others, as the maximum age of M. margaritifera populations in my study differed by as much as 60 years. As mussel and trout densities seem to be important for recruitment success, one conservation method may be to concentrate mussels into sites where trout density is high.

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Chadderton, W. L. "The ecology of Stewart Island freshwater communities." Thesis, University of Canterbury. Zoology, 1990. http://hdl.handle.net/10092/6568.

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A comprehensive survey of the stream and river faunas of Stewart Island (invertebrates and fish) was undertaken between August 1987 and December 1989. In total, 113 invertebrate taxa and 12 fish species were recorded. The invertebrate fauna is characterised by a common core of taxa (Chiltonia rivertonensis, Oligochaeta, Chironomidae, Deleatidium, Zelandoperla, Zelandobius, Austroperla cyrene, Hydrobiosidae stenocerca, Hydrobiosidae, Simuliidae, and Scirtidae) and a paucity or absence of some common mainland families or genera, notably the Notonemouridae, Conoesucidae, and Archichauliodes. The fish fauna consists of diadromous species except for Galaxias vulgaris. A number of invertebrate and fish species are more widespread, or abundant, and occupy more diverse habitat types than reported in mainland studies. They include the isopod Austridotea benhami, and the fishes Galaxias argenteus, G. fasciatus and Gobiomorphus huttoni. These differences may reflect the more pristine conditions of Stewart Island streams and an absence of predatory salmonids on the island. Gut analysis of G. huttoni and G. fasciatus confirmed that they fed predominantly on benthic invertebrates and terrestrial prey items, respectively. Both species appeared to be opportunistic feeders and showed a low degree of prey selectivity. Experimental studies at six sites in the Rakeahua River system indicated that leaf litter breakdown (kamahi leaves) rates were rapid at headwater sites where feeding by shredders (principally Austroperla cyrene) was high. In contrast, breakdown rates were slower at mainstem sites even though the large detritivore/carnivore, Austridotea benhami was present. In summary, the Stewart Island freshwater fauna can be seen to possess a number of distinctive features, but the extent of these appear to be no greater than those found between the North and South Islands of New Zealand. Stewart Island is unique, however, because of the apparent absence of adventive species, including trout, that are common on the mainland. Because of this and the largely pristine nature of its catchments, I suggest that greater protection should be afforded to the island's freshwater systems than is imparted by Reserve and Conservation Land status.
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Sivichai, Somsak. "Tropical freshwater fungi : their taxonomy and ecology." Thesis, University of Portsmouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302240.

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Sanderson, Rory J. "Ecology of freshwater plankton in contrasting hydraulic environments." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/29785.

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The effects of contrasting water residence time on the planktonic community of three water bodies was studied. The sites were Rutland Water, Covenham reservoir and the River Nene, in order of decreasing retention time. The river was the only site where the residence time was sufficiently short to directly impact upon planktonic populations. The importance of physical mechanisms of control in the river was indicated by the dominance of r-selected phytoplankton, namely diatoms and green algae, and zooplankton, namely rotifers. This pattern was in contrast to that of the reservoirs in which slower-growing cyanobacteria and cladocerans dominated. Riverine rotifers were found to have rapid population turnover, due to a combination of short pre-adult duration and high maximum growth rates. Some species also showed a shift in reproductive behaviour to the constant production of resting eggs. This was assumed to convey benefits in a system where resting stages may be less susceptible than adults to downstream displacements. The total chlorophyll 'a' concentration achieved per unit phosphorus was significantly lower in the river than either of the reservoirs. Algal density was negatively associated with discharge in the Nene, suggesting the importance of physical control. The relationship was not a simple one, however, as periods of increased retention time during the summer were associated with low algal density. The absolute density of rotifers was found to be constrained by discharge. Animals were rare above a threshold flow velocity of 0.08ms-1. Simple models of water flow in open channels were insufficient to account for the continued persistence of a plankton in the Nene given the level of advection. It was assumed that the overall retention time of the system was increased by the presence of dead zones within the channel which 'held' planktonic organisms for sufficient time for populations to develop. This behaviour was important during the spring when population density increased in the main channel.
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Lee, Jacqueline S. "The distribution and ecology of the freshwater molluscs of northern British Columbia." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0033/MQ62481.pdf.

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Jamal, Al-Lail S. S. "Ecophysiological studies on freshwater gammarid crustaceans." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373334.

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Fear, Lesley Anne. "Microbial ecology of the gut of Gammarus pulex." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250026.

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Roznere, Ieva. "Health assessment of freshwater mussels using metabolomics." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461065547.

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Barretto, de Menezes Alexandre. "Molecular ecology of cellulose-degrading microorganisms in freshwater lakes." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511074.

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Books on the topic "Freshwater ecolog"

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Niskern, Diana. Freshwater ecology. Washington, D.C: Science Reference Section, Science and Technology Division, Library of Congress, 1990.

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Craig, John F., ed. Freshwater Fisheries Ecology. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118394380.

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Traunspurger, Walter, ed. Ecology of freshwater nematodes. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789243635.0000.

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Abstract This book, with its 12 chapters, not only encourages all ecologists to consider free-living nematodes as a model organism in their investigations, but also shows how important it is to study the fundamentals of ecology, for example, the distribution and diversity of a group of organisms as well as the interactions of those organisms with others. Detailed studies of this type will ultimately provide a better understanding of food webs, their role in the respective habitat, and the changes therein caused by human activities. In this context, research during the past 20 years has determined that, in addition to aquatic environments, nematodes are good indicators of sediment and soil quality. This book takes into account much of the recent research on the ecology of freshwater nematodes. It contains many new chapters as well as revisions and updates of the chapters of the 2006 book. The objective was to write a comprehensive yet readable guide for interested biologists, from students to career scientists.
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Freshwater feeders: Studying food webs in freshwater. Vero Beach, FL: Rourke Pub., 2009.

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Henry, Mills Derek, ed. Freshwater ecology: Principles and applications. London: Belhaven Press, 1990.

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Reynolds, C. S. The ecology of freshwater phytoplankton. Cambridge: Cambridge University Press, 1990.

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1928-, Mills D. H., ed. Freshwater ecology: Principles and applications. Chichester: Wiley, 1994.

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Ecology of Australian freshwater fishes. Collingwood, Vic: CSIRO Pub., 2013.

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Patterns in freshwater fish ecology. New York: Chapman & Hall, 1998.

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1958-, Downes Barbara J., and Boulton Andrew J, eds. Freshwater ecology: A scientific introduction. Malden, MA: Blackwell Pub. Co., 2004.

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Book chapters on the topic "Freshwater ecolog"

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Hodda, Mike, and Walter Traunspurger. "Nematodes from extreme and unusual freshwater habitats." In Ecology of freshwater nematodes, 109–50. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789243635.0004.

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Abstract This chapter discusses the ecology and biogeography of nematodes from freshwater environments that are extreme in temperature, chemical composition, variability, or isolation. Described and compared are the compositions of nematode faunas from hot or mineral springs, pools and bogs in polar regions, intermittent lakes or pools or streams, freshwater pools in bromeliads or tree hollows, stemflow, fresh groundwaters, and caves. Comparisons of the nematode faunas from these extreme habitats with those from more typical freshwater environments are also provided. Also discussed are nematodes with evolutionary affinities to freshwaters that are found in estuarine sediments along with nematodes from freshwaters with evolutionary affinities to otherwise marine taxa. The emphasis is on broad ecological patterns rather than on detailed species interactions with the various freshwater environments. Thus, the chapter focuses on genera or higher taxa rather than species.
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Stonehouse, B. "Freshwater Environments." In Polar Ecology, 106–24. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-1260-5_4.

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Höss, Sebastian. "Single- and multi-species toxicity testing with nematodes." In Ecology of freshwater nematodes, 298–322. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789243635.0010.

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Abstract This chapter discusses the utility of nematodes in experimental ecotoxicology, and specifically in the study of freshwaters. Drawing on reports in which nematodes were used as test organisms in single-species tests as well as studies investigating nematode communities in model ecosystems (i.e. microcosms), the suitability of nematode-based experimental approaches in prospective and retrospective risk assessments of chemicals in freshwater sediments is examined. Several examples are presented of the use of Caenorhabditis elegans as a test organism in single-species bioassays, in order to demonstrate the versatility of this nematode for ecotoxicological investigations.
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"FRESHWATER ECOLOGY." In Stream Ecology and Self Purification, 89–108. CRC Press, 2001. http://dx.doi.org/10.1201/9781420031676-10.

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"Freshwater Ecology." In Stream Ecology and Self Purification, 73–92. CRC Press, 2001. http://dx.doi.org/10.1201/9781420031676.ch7.

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"Freshwater ecology." In Methods of Environmental Impact Assessment, 302–30. Routledge, 2001. http://dx.doi.org/10.4324/9780203995709-17.

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Dodds, Walter K., and Matt R. Whiles. "Freshwater Ecosystems." In Freshwater Ecology, 723–64. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-813255-5.00024-7.

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Dodds, Walter K. "Freshwater Ecosystems." In Freshwater Ecology, 448–72. Elsevier, 2002. http://dx.doi.org/10.1016/b978-012219135-0/50023-4.

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Dodds, Walter K., and Matt R. Whiles. "Freshwater Ecosystems." In Freshwater Ecology, 635–73. Elsevier, 2010. http://dx.doi.org/10.1016/b978-0-12-374724-2.00024-6.

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Lamberth, Curt, and Jocelyne M. R. Hughes. "Physical Variables in Freshwater Ecosystems." In Freshwater Ecology and Conservation, 106–32. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198766384.003.0006.

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We consider three categories of physical variables that can be measured for different freshwater ecosystems: (1) variables measured or described at the catchment or sub-catchment scale (e.g., bathymetry, depth, topography, geology); (2) those in or near to the water (e.g., temperature, turbidity, solar radiation); and (3) variables used to describe the substrate (e.g., particle size, mineral vs. peat). In this chapter we consider the practical aspects of undertaking a freshwater survey that includes measurement of physical variables; the approaches needed to undertake the survey; choosing a sampling strategy or protocol; practical tips on choice of measurement method or sensor, battery type, equipment calibration, resolution, accuracy, and links to literature providing further detail. The final section provides examples from a diversity of freshwaters where physical variables have been measured as part of an ecological survey, forming the evidence-base for management or conservation decisions.
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Conference papers on the topic "Freshwater ecolog"

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Itskovich, Valeria, O. Kaluzhnaya, R. Prathiviraj, G. Seghal Kiran, and J. Selvin. "Microbiome Analysis of Healthy and Bleached Freshwater Sponges." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09511.

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Grabowska, Magdalena. "The Role of Springs in Maintaining the Biodiversity of Freshwater Algae." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09510.

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Stankevica, Karina. "ENVIRONMENTAL AND ECONOMIC ASPECTS OF SMALL FRESHWATER LAKE SUSTAINABLE USE: LAKE PILVELIS EXAMPLE." In 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b53/s21.018.

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Kusnerik, Kristopher M., Guy Means, Roger W. Portell, and Michal Kowalewski. "TRACKING CHANGES IN THE HISTORICAL ECOLOGY OF FLORIDA’S RIVERS USING RECENT AND FOSSIL FRESHWATER MOLLUSKS." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-301269.

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Koutsikos, Nicholas, Leonidas Vardakas, Stamatis Zogaris, and Olga-Ioanna Kalantzi. "Overlapping Areas of Non-Indigenous and Critically Endangered Freshwater Fishes: Setting Conservation Priorities in Greece <sup>†</sup>." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09409.

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Kusnerik, Kristopher M., Harley Means, Harley Means, Roger W. Portell, Roger W. Portell, Michal Kowalewski, and Michal Kowalewski. "HISTORICAL ECOLOGY OF THE SILVER RIVER, FLORIDA: COMPARATIVE ANALYSES OF LIVING, DEAD, AND FOSSIL MOLLUSKS FROM FRESHWATER HABITATS." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-280434.

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Ağdamar, Sevan. "Sequence-Related Amplified Polymorphism (SRAP) Markers: A Feasible Tool for Studies in Invasion Genetics of Freshwater Fish <sup>†</sup>." In 1st International Electronic Conference on Biological Diversity, Ecology and Evolution. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/bdee2021-09407.

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Baba, Takashi, Nobuyasu Yamaguchi, Masao Nasu, Youichi Aibe, and Masanori Shinohara. "Rapid and Accurate Determination of Bacterial Abundance and their Physiological Activity in Freshwater used in Closed Ecology Experiment Facilities (CEEF) “Mini-Earth”, Japan." In International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2006. http://dx.doi.org/10.4271/2006-01-2078.

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Schindler, Rob, Sean Comber, and Andrew Manning. "METAL POLLUTANT PATHWAYS IN COHESIVE COASTAL CATCHMENTS: INFLUENCE OF FLOCCULATION ON PARTITIONING AND FLUX." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b2/v2/09.

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Potentially toxic metals (PTMs) dispersed within catchments from land-based sources pose serious, long-term threats to aquatic ecology and human health. Their chemical state or form affects the potential for transportation and bioavailability and ultimate environmental fate. PTMs are transported either as (1) particulates adsorbed onto sediments, or 2) solutes in groundwater and open channel flow. Cohesive sediment occupies a major part of the world’s coastlines. PTMs are readily sorbed onto clay/silt and consequently particulate-borne PTMs dominate in estuaries and coastal waters. Sediments also represent a considerable ‘sink’ of contaminants which can be periodically remobilized. The role of suspended particulates in the uptake, release, and transport of heavy metals is thus a crucial link in understanding PTM dispersion in these environments. Cohesive sediment is subject to flocculation which dictates the behaviour of suspended sediment. PTM partitioning, flocculation and particulate-borne PTM dynamics are spatially and temporally variable in response to a complex array of inter-related physical and chemical factors exhibited within tidal catchments. However, knowledge of the dispersion and accumulation of both particulate and soluble forms of PTMs within cohesive coastal catchments is limited by little understanding of the association of PTMs with flocculated sediments and their subsequent deposition. This study investigates the influence of changing hydrodynamics and salinities to reveal the partitioning coefficients (Kp) and PTM settling flux (PTMSF) for different spatial and temporal locations within an idealized mesotidal catchment. The data show that the ratio of soluble and particulate-borne PTMs are dependent on salinity and flocculation, and that PTMSF is dependent upon partitioning and flocculation dynamics. Kp is largely dictated by salinity, but floc size and suspended particulate matter concentration (SPMC) are also influential, particular for PTMs with low chloride complexation and in freshwater. PTMSF is a function of Kp, floc size and settling velocity and varies by up to 3 orders of magnitude in response to changing environmental conditions. Findings will improve our ability to predict and monitor contaminant transport for PTMs generated by industries such as agriculture, mining, fisheries, aquaculture & marine engineers. They can be incorporated in existing decision making tools, and help improve numerical modelling parameteristion, to maintain environmental quality standards and limit the impacts of bioavailability of metals in aquatic environment.
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Reports on the topic "Freshwater ecolog"

1

Valenzuela, Nicole M. Evolutionary Ecology of Freshwater Turtles. Ames: Iowa State University, Digital Repository, 2007. http://dx.doi.org/10.31274/farmprogressreports-180814-298.

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Johnson, Gary E., Adam Storch, J. R. Skalski, Amanda J. Bryson, Christine Mallette, Amy B. Borde, E. Van Dyke, et al. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats of the Lower Columbia River, 2007?2010. Office of Scientific and Technical Information (OSTI), March 2011. http://dx.doi.org/10.2172/1009747.

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Sobocinski, Kathryn L., Gary E. Johnson, Nichole K. Sather, Adam Storch, Tucker A. Jones, Christine Mallette, Earl M. Dawley, John R. Skalski, David Teel, and Paul Moran. Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2007. Office of Scientific and Technical Information (OSTI), March 2008. http://dx.doi.org/10.2172/947922.

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Sather, Nichole K., Gary E. Johnson, Adam Storch, David Teel, John R. Skalski, Tucker A. Jones, Earl M. Dawley, et al. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2008. Office of Scientific and Technical Information (OSTI), May 2009. http://dx.doi.org/10.2172/962847.

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5

Pokrzywinski, Kaytee, Kaitlin Volk, Taylor Rycroft, Susie Wood, Tim Davis, and Jim Lazorchak. Aligning research and monitoring priorities for benthic cyanobacteria and cyanotoxins : a workshop summary. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41680.

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In 2018, the US Army Engineer Research and Development Center partnered with the US Army Corps of Engineers–Buffalo District, the US Environmental Protection Agency, Bowling Green State University, and the Cawthron Institute to host a workshop focused on benthic and sediment-associated cyanobacteria and cyanotoxins, particularly in the context of harmful algal blooms (HAB). Technical sessions on the ecology of benthic cyanobacteria in lakes and rivers; monitoring of cyanobacteria and cyanotoxins; detection of benthic and sediment-bound cyanotoxins; and the fate, transport, and health risks of cyanobacteria and their associated toxins were presented. Research summaries included the buoyancy and dispersal of benthic freshwater cyanobacteria mats, the fate and quantification of cyanotoxins in lake sediments, and spatial and temporal variation of toxins in streams. In addition, summaries of remote sensing methods, omic techniques, and field sampling techniques were presented. Critical research gaps identified from this workshop include (1) ecology of benthic cyanobacteria, (2) identity, fate, transport, and risk of cyanotoxins produced by benthic cyanobacteria, (3) standardized sampling and analysis protocols, and (4) increased technical cooperation between government, academia, industry, nonprofit organizations, and other stakeholders. Conclusions from this workshop can inform monitoring and management efforts for benthic cyanobacteria and their associated toxins.
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6

Sather, NK, GE Johnson, and AJ Storch. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2008 Annual Report. Office of Scientific and Technical Information (OSTI), July 2009. http://dx.doi.org/10.2172/961983.

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7

Sobocinski, Kathryn, Gary Johnson, and Nichole Sather. Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2007 Annual Report. Office of Scientific and Technical Information (OSTI), March 2008. http://dx.doi.org/10.2172/961989.

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