Academic literature on the topic 'River habitat survey'
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Journal articles on the topic "River habitat survey"
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Kiraga, Marta, and Zbigniew Popek. "Using the River Habitat Survey method in forecasting effects of river restoration." Annals of Warsaw University of Life Sciences, Land Reclamation 46, no. 2 (December 1, 2014): 125–38. http://dx.doi.org/10.2478/sggw-2014-0011.
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Abstract Using the River Habitat Survey method in forecasting effects of river restoration. Research presents usability of the River Habitat Survey (RHS) evaluation method in forecasting effects of the Zielawa River restoration, performed in selected section between 18 + 960 km and 19 + 460 km. The EU so-called Water Framework Directive signalizes necessity of achieving a good ecological status of European rivers in the immediate future. Accordingly, river restoration is the main tool for already technically regulated rivers’ quality upgrading. Present research contains a collation of four proposed restoration works variants and the ecological evaluation of chosen river reach before and after initiating restoration works in accordance to various variants, using the RHS method. The conclusion is fact, that in dependence of established variant it is possible to receive improvement of ecological class from present Class V to Class IV (variants 1 and 2) or Class III (variants 3 and 4)
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Milanovic, Ana, Marko Urosev, and Dragana Milijasevic. "Use of the RHS method in Golijska Moravica river basin." Glasnik Srpskog geografskog drustva 86, no. 2 (2006): 53–61. http://dx.doi.org/10.2298/gsgd0602053m.
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River Habitat Survey (RHS) is terrain method developed in UK in 1994. for determination of physical character of rivers and river basin. This method is applied for the first time in Golijska Moravica river basin. Two indices which broadly describe the diversity of river habitat and landscape features (Habitat Quality Assessment (HQA)) and extent and severity of artificial modification to the channel (Habitat Modification Class (HMC)) has been developed for reporting purposes. These are based on simple scoring systems which have been agreed by technical experts.
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Raven, P. J., N. T. H. Holmes, F. H. Dawson, and M. Everard. "Quality assessment using River Habitat Survey data." Aquatic Conservation: Marine and Freshwater Ecosystems 8, no. 4 (July 1998): 477–99. http://dx.doi.org/10.1002/(sici)1099-0755(199807/08)8:4<477::aid-aqc299>3.0.co;2-k.
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Gu, Jung-Eun, Sang Hwa Jung, Joongu Kang, and Hyoseop Woo. "Analysis for Underwater Sound on Natural River Habitat." E3S Web of Conferences 40 (2018): 02047. http://dx.doi.org/10.1051/e3sconf/20184002047.
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A riffle-pool structure is a representative physical structure of bed in rivers. The change in the physical parameter of the habitat could lead to changes in the sound environment of rivers, which are expressed by underwater acoustics. This change in underwater sound affects fish habitat. In this study, the changes of underwater acoustics were analyzed according to the change of pool-riffle sequence in a natural river. And the correlation between underwater acoustics and hydraulic characteristics was investigated. The survey for underwater acoustics was performed in the Namdae stream where is in Gangwon province. This stream belongs to the Han River basin and the river length is 39.01 km and the catchment area is 127.56 km2. The Namdae stream is a river that accounts for more than 70% of salmon returning to South Korea. The spawning salmon will return to this area around November after growing in the Bering Sea. It is important to manage the fish habitat in this river so there is a lot of research on the enhancement of fish habitat. Hydraulic characteristics were changed by the river bed structure. In this study, we investigated the relationship between underwater acoustic characteristics and hydraulic factors such as riverbed material, flow rate and water depth of each habitat type at 12 sites. The characteristics of underwater acoustic differed relative to different hydraulic factors of the two habitats, which is riffle and pool. The sound pressure level of riffles was relatively higher than that of the pools due to bed materials, shallow depth and high water velocity of riffles. In the future, it is considered that the underwater sound can be utilized as a parameter to evaluate the physical habitat environment of the river.
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Hilling, Corbin D., Jason L. Fischer, Jason Ross, Taaja R. Tucker, Robin L. DeBruyne, Christine M. Mayer, and Edward F. Roseman. "Nearshore Fish Species Richness and Species–Habitat Associations in the St. Clair–Detroit River System." Water 13, no. 12 (June 8, 2021): 1616. http://dx.doi.org/10.3390/w13121616.
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Shallow water riparian zones of large rivers provide important habitat for fishes, but anthropogenic influences have reduced the availability and quality of these habitats. In the St. Clair–Detroit River System, a Laurentian Great Lakes connecting channel, losses of riparian habitat contributed to impairment of fish populations and their habitats. We conducted a seine survey annually from 2013 to 2019 at ten sites in the St. Clair and Detroit rivers to assess riparian fish communities, and to identify habitat attributes associated with fish species richness and catches of common species. We captured a total of 38,451 fish representing 60 species, with emerald shiner Notropis atherinoides composing the largest portion of the catch. We used an information-theoretic approach to assess the associations between species richness and catches of 33 species with habitat variables (substrate, shoreline vegetation types, and aquatic macrophyte richness). Sand, cobble, and algal substrates and shoreline vegetation were important predictors of species richness based on a multimodel inference approach. However, habitat associations of individual species varied. This work identified manageable habitat variables associated with species richness, while identifying potential tradeoffs for individual species. Further, this work provides baselines for development and evaluation of fish community and shoreline habitat restoration goals.
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Naura, Marc, Mike J. Clark, David A. Sear, Peter M. Atkinson, Duncan D. Hornby, Paul Kemp, Judy England, Graeme Peirson, Chris Bromley, and Matthew G. Carter. "Mapping habitat indices across river networks using spatial statistical modelling of River Habitat Survey data." Ecological Indicators 66 (July 2016): 20–29. http://dx.doi.org/10.1016/j.ecolind.2016.01.019.
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Costa, Francisco, and António Vieira. "Decision Support Tools for River Restoration: The Implementation of the “River Habitat Survey” Methodology on the River Selho (Guimarães Municipality, Northwest Portugal)." Hydrology 8, no. 2 (April 21, 2021): 69. http://dx.doi.org/10.3390/hydrology8020069.
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The river habitat survey (RHS) system is a method used to assess the physical features and quality of rivers, which was developed to assist in the conservation and recovery of riverside habitats. The RHS takes into account the need to characterize areas of intervention from a hydromorphological point of view, in order to introduce corrective measures aimed at restoring degraded sections and habitats, and increasing local biodiversity. In this paper, we present the results obtained from the application of the RHS methodology to the River Selho, in the municipality of Guimarães (Portugal). The transects that we defined were strongly influenced by anthropic actions that have modified the riverside habitats, the artificialization of the river channel, and the urban occupation of the banks. Taking into account the results, we can point out the main problems that currently affect the hydromorphological quality of the transects analyzed in the River Selho, as well as identify the originating factors: the excessive silting of the watercourse; morphometric changes, with an emphasis on the narrowing and modification of the channel and the banks; as well as the massive destruction of the riparian zone. This study shows that the application of the RHS methodology is a useful tool for the management of degraded riverside areas.
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Cortes, Rui Manuel Vitor, Simone Varandas, Samantha Jane Hughes, and Maria Teresa Ferreira. "Combining habitat and biological characterization: Ecological validation of the river habitat survey." Limnetica 27, no. 1 (June 15, 2008): 39–56. http://dx.doi.org/10.23818/limn.27.04.
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Spieczyński, Damian, Małgorzata Raczyńska, Anna Grzeszczyk-Kowalska, Mariusz Raczyński, and Małgorzata Zimnicka-Pluskota. "THE APPLICATION OF THE RIVER HABITAT SURVEY METHOD TO THE ASSESSMENT OF THE QUALITY OF THE RIVER WARDYNKA (NORTH-WESTERN POLAND)." Inżynieria Ekologiczna 35 (2013): 85–94. http://dx.doi.org/10.12912/23920629/310.
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Kaeser, Adam J., Reuben Smit, and Michael Gangloff. "Mapping and Modeling the Distribution, Abundance, and Habitat Associations of the Endangered Fat Threeridge in the Apalachicola River System." Journal of Fish and Wildlife Management 10, no. 2 (September 1, 2019): 653–75. http://dx.doi.org/10.3996/032019-jfwm-021.
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Abstract Large, Coastal Plain rivers of the southeastern United States contain some of the most diverse freshwater communities in North America; however, surveying the fauna of these large rivers presents numerous logistical and statistical challenges. We assessed the contemporary distribution, abundance, and habitat associations of the endangered fat threeridge mussel Amblema neislerii throughout the Apalachicola River system in northwestern Florida. To achieve this goal, we used side scan sonar to map the distribution of mesohabitats and conducted a system-wide, quantitative survey to define mussel habitat associations. We then used habitat and mussel data to develop predictive models of spatial distribution and to estimate the abundance of fat threeridge across the entire Apalachicola River system. Findings revealed a broadly distributed (i.e., 128 river kilometers occupied), robust population of approximately 9 million individuals (95% CI = 5–12 million), with a center of distribution (i.e., where abundance and occurrence were highest) approximately 45–80 river kilometers upstream of the river mouth. Fat threeridge primarily occupy fine sediment mesohabitats characterized by smooth/plane bedforms that are clearly definable via sonar habitat mapping. We hypothesize that this species may be particularly sensitive to the availability of stable, fine sediments during one or more critical life history phases and that the availability of this habitat may explain its restricted distribution in tributary rivers. Our study provides a quantitative, replicable foundation upon which future population and habitat monitoring can be based.
Dissertations / Theses on the topic "River habitat survey"
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Boys, Craig Ashley, and n/a. "Fish-Habitat Associations in a Large Dryland River of the Murray-Darling Basin, Australia." University of Canberra. Resource, Environmental & Heritage Sciences, 2007. http://erl.canberra.edu.au./public/adt-AUC20070807.112943.
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Many aspects concerning the association of riverine fish with in-channel habitat remain
poorly understood, greatly hindering the ability of researchers and managers to address
declines in fish assemblages. Recent insights gained from landscape ecology suggest
that small, uni-scalar approaches are unlikely to effectively determine those factors that
influence riverine structure and function and mediate fish-habitat associations. There
appears to be merit in using multiple-scale designs built upon a geomorphologically-derived
hierarchy to bridge small, intermediate and large spatial scales in large rivers.
This thesis employs a hierarchical design encompassing functional process zones
(referred to hereafter as zones), reaches and mesohabitats to investigate fish-habitat
associations as well as explore patterns of in-channel habitat structure in one of
Australia's largest dryland river systems; the Barwon-Darling River.
In this thesis, empirical evidence is presented showing that large dryland rivers are
inherently complex in structure and different facets of existing conceptual models of
landscape ecology must be refined when applied to these systems. In-channel habitat
and fish exist within a hierarchical arrangement of spatial scales in the riverscape,
displaying properties of discontinuities, longitudinal patterns and patch mosaics. During
low flows that predominate for the majority of time in the Barwon-Darling River there
is a significant difference in fish assemblage composition among mesohabitats. There is
a strong association between large wood and golden perch, Murray cod and carp, but
only a weak association with bony herring. Golden perch and Murray cod are large
wood specialists, whereas carp are more general in there use of mesohabitats. Bony
herring are strongly associated with smooth and irregular banks but are ubiquitous in
most mesohabitats. Open water (mid-channel and deep pool) mesohabitats are
characterised by relatively low abundances of all species and a particularly weak
association with golden perch, Murray cod and carp. Murray cod are weakly associated
with matted bank, whereas carp and bony herring associate with this mesohabitat patch
in low abundance.
Nocturnal sampling provided useful information on size-related use of habitat that was
not evident from day sampling. Both bony herring and carp exhibited a variety of
habitat use patterns throughout the die1 period and throughout their lifetime, with
temporal partitioning of habitat use by juvenile bony herring and carp evident. Much of
the strong association between bony herring and smooth and irregular banks was due to
the abundance of juveniles (<100mm in length) in these mesohabitats. Adult bony
herring (>100mm length) occupied large wood more than smooth and irregular banks.
At night, juvenile bony herring were not captured, suggesting the use of deeper water
habitats. Adult bony herring were captured at night and occupjed large wood, smooth
bank and irregular bank. Juvenile carp (<200mm length) were more abundant at night
and aggregated in smooth and irregular banks more than any other mesohabitat patch.
Adult carp (>200mm length) occupied large wood during both day and night.
There is a downstream pattern of change in the fish assemblage among river zones, with
reaches in Zone 2 containing a larger proportion of introduced species (carp and
goldfish) because of a significantly lower abundance of native species (bony herring,
golden perch and Murray cod) than all other zones. In comparison, the fish assemblage
of Zone 3 was characterised by a comparatively higher abundance of the native species
bony herring, golden perch and Murray cod. A significant proportion of the amongreach
variability in fish assemblage composition was explained at the zone scale,
suggesting that geomorphological influences may impose some degree of top-down
constraint over fish assemblage distribution. Although mesohabitat composition among
reaches in the Barwon-Darling River also changed throughout the study area, this
pattern explained very little of the large-scale distribution of the fish assemblage, with
most of the variability in assemblage distribution remaining unexplained. Therefore,
although mesohabitat patches strongly influence the distribution of species within
reaches, they explain very little of assemblage composition at intermediate zone and
larger river scales. These findings suggest that small scale mesohabitat rehabilitation
projects within reaches are unlikely to produce measurable benefits for the fish
assemblage over intermediate and large spatial scales in the Barwon-Darling River. This
indicates the importance taking a holistic approach to river rehabilitation that correctly
identifies and targets limiting processes at the correct scales.
The variable nature of flow-pulse dynamics in the Barwon-Darling River creates a
shifting habitat mosaic that serves to maintain an ever-changing arrangement of habitat
patches. The inundation dynamics of large wood habitat described in this thesis
highlights the fragmented nature of mesohabitat patches, with the largest proportion of
total in-channel large wood remaining unavailable to fish for the majority of the time.
At low flows there is a mosaic of large wood habitat and with increasing discharge more
potential large wood habitat becomes available and does so in a complex spatial
manner. What results in this dryland river is a dynamic pattern of spatio-temporal
patchiness in large wood habitat availability that is seen both longitudinally among
different river zones and vertically among different heights in the river channel. Water
resource development impacts on this shifting habitat mosaic.
Projects undertaking both fish habitat assessment and rehabilitation need to carefully
consider spatial scale since the drivers of fish assemblage structure can occur at scales
well beyond that of the reach. Fish-habitat associations occurring at small spatial scales
can become decoupled by process occurring across large spatial scales, making
responses in the fish assemblage hard to predict. As rivers become increasingly
channelised, there is an urgent need to apply research such as that conducted in this
thesis to better understand the role that in-channel habitats play in supporting fish and
other ecosystem processes. Habitat rehabilitation projects need to be refined to consider
the appropriate scales at which fish assemblages associate with habitat. Failure to do so
risks wasting resources and forgoes valuable opportunities for addressing declines in
native fish populations. Adopting multi-scalar approaches to understanding ecological
processes in aquatic ecosystems, as developed in this thesis, should be a priority of
research and management. To do so will enable more effective determination of those
factors that influence riverine structure and function at the approariate scale.
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Duarte, Leila Magna Gomes. "Comunidades de aves em galerias ripícolas mediterrânicas do Sul de Portugal." Master's thesis, Universidade de Évora, 2009. http://hdl.handle.net/10174/18568.
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Conhecer os requisitos ambientais por parte das espécies demonstrou ser essencial em disciplinas como a ecologia e a biologia da conservação. O presente estudo visa estudar as respostas e dependência das comunidades de aves em relação às galerias ripícolas mediterrânicas. Para tal utilizaram-se dados recolhidos pelo River Habitat Survey (RHS) e por censos por pontos de escuta, em três ribeiras no sul de Portugal. Os dados ambientais foram estruturados em matrizes de acordo com as características físicas da ribeira e das margens, e modificações antropogénicas. Enquanto os dados biológicos foram agrupados em guildas: alimentação e ocupação vertical do habitat ("estrato"). Através de análises canónicas aos a dos estruturados obtiveram-se correlações válidas entre as matrizes ambientais e as guildas, nomeadamente para indivíduos directamente dependentes da água e planadores ("aéreas"), provando a validade da metodologia e o potencial da combinação destas duas técnicas. ABSTRACT; Understanding species habitat requirements has proved to be essential in ecology and conservation biology. The present report aims to examine the responses and dependence we used data collected by River Habitat Survey (RHS) and point count censuses in three rivers in southern Portugal. The environmental data were structured in matrices according to physical characteristics of the stream, the banks and anthropogenic modifications, whilst biological data was grouped into guilds: foraging and occupation ("estate"). Through canonical analysis to structured data we obtained valid correlations between the environmental variables and species guilds, particularly for those directly dependent on water and gliders ("aéreas"), proving the validity of the methodology and the potential of these two techniques working together.
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Worrall, Thomas P. "The influence of hydromorphology on instream ecology in lowland rivers." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10141.
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With the formal adoption of the Water Framework Directive in 2000, into European legislation it committed all member states to ensure that all inland waterbodies should reach good ecological status by 2015. As a result examination of the influence of hydromorphology on the ecological health of riverine ecosystems has become an increasingly important priority for statutory monitoring agencies such as the Environment Agency of England and Wales and equivalents in other parts of the UK. It is anticipated that by increasing our understanding of the role that hydromorphological processes play in shaping river habitats and the ecosystems that they support, river management strategies can be developed that will help lead to waterbodies achieving good ecological status. In this thesis, the influence of river hydromorphology and instream channel management activities on instream macroinvertebrate communities is explored. A two-scale approach was used at a regional macro-scale and local / catchment micro-scale. The macro-scale study examines the ecological, hydrological and geomorphological data for 88 river reaches located within the Environment Agency , Anglian Central and Anglian Northern regions, over a twenty year period (1986-2005). At the micro-scale two sub-catchments were selected, the River Bain and River Lymn, both located in Lincolnshire, England for detailed investigation. The micro-scale study was undertaken using ecological, hydrological and geomorphological data collected over three successive seasons (Autumn 2008, Spring 2009 and Summer 2009) enabling the seasonal variations and the influence of both stream size and habitat biotope on macroinvertebrate community composition and structure to be explored. The hydromorphological characteristics and condition of the rivers were quantified using ecologically relevant hydrological indices, calculated from flow discharge paired with geomorphological indices from River Habitat Survey data. The response of the instream macroinvertebrate communities was examined using a range of ecological indices including the Lotic-invertebrate Index for Flow Evaluation (LIFE). The results of the macro-scale investigation demonstrate that the macroinvertebrate community is directly influenced by instream hydromorphology and the level of anthropogenic modification. The micro-scale study highlights important differences in macroinvertebrate communities associated with instream habitat / biotope composition. The quantification of river hydromorphology, with the use of ecologically relevant hydrological indices and geomorphological indices, derived from River Habitat Survey data, is discussed with regards its ability to help explain the structure and composition of macroinvertebrate communities within highly managed /regulated riverine ecosystems. The implications of this research for river managers and for implementing river restoration and rehabilitation schemes are explored.
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Gettelman, Tatiana. "IMMOBILIZATION AND FIELD SURGERY TECHNIQUES, SURVIVAL, AND DAYTIME RESTING SITES OF RIVER OTTERS IN SOUTHERN ILLINOIS." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2893.
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After steep declines due to overharvest and habitat loss, North American river otter (Lontra canadensis) populations have been increasing in most of the U.S. Radiotelemetry is an essential tool for understanding river otter habitat use, survival rates, and sources of mortality, which is important for successfully managing these growing populations. Surgically implanting radiotransmitters is standard for river otters, but strict requirements for the handling and transport of DEA-scheduled drugs for sedation, and the lack of accessible surgery suites, can limit researchers. My objectives were to: (1) develop a non-scheduled drug combination to sedate river otters and surgically implant intra-abdominal transmitters in a field setting, (2) determine survival rates and causes of mortality for river otters, and (3) quantify fourth order habitat selection at river otter daytime resting sites. During 2018-2020, I surgically implanted 24 river otters with transmitters in southern Illinois and monitored them via radiotelemetry to determine survival and causes of mortality. The effectiveness of the drug combination of Dexmedetomidine and Nalbuphine for chemically immobilizing river otters was tested to determine the appropriate dosage. I used homing to track river otters to 132 daytime resting sites where I described the structure used, closest water type, and distance to water; for 51 of these resting sites I also measured understory cover, overstory cover, distance to water, and presence of river otter and beaver sign. These 51 sites were paired with 1-4 random riparian locations, where I measured the same habitat variables. I then modeled habitat selection of daytime resting sites using conditional logistic regression. A combination of 0.06 mg dexmedetomidine/kg and 1.2 mg nalbuphine/kg injected intramuscularly followed by a 10-15 min induction period was sufficient to chemically immobilize river otters enough for further sedation with 1-4% isoflurane gas. Surgery in the field was successful, with only 2 sedation-related mortalities recorded. Estimated river otter survival was 0.84 ± 0.09 with no difference between males (0.83 ± 0.11) and females (0.86 ± 0.13) ( = 0, P = 0.900) and or between protected areas (0.80 ± 0.10) and harvested areas (0.83 ± 0.15) ( = 0.3, P = 0.600). Four river otters died (2 harvest, 2 unknown causes) during my study. Daytime rest sites were located in non-enclosed vegetation (n = 54) as well as enclosed sites, such as bank dens (n = 39), beaver lodges (n = 33), and wood piles (n = 6). River otters selected for greater understory cover at all sites, though enclosed sites had less understory cover than non-enclosed sites (all P ≤ 0.001). The top habitat selection model included the parameters understory cover and the beaver sign but did not include canopy cover. My study offers a novel way to sedate river otters without DEA-scheduled drugs, updates information about river otter survival, and provides new information on fourth order habitat selection at daytime resting sites.
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Reid, Carolyn Cristine. "The effects of submerged aquatic vegetation as habitat on the survivorship of clams field surveys in St. Mary's River, Maryland and laboratory predation experiments /." College Park, Md. : University of Maryland, 2003. http://hdl.handle.net/1903/138.
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Thesis (M.S.) -- University of Maryland, College Park, 2003.Thesis research directed by: Marine, Estuarine, Environmental Sciences Graduate Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Maxwell, Nikki J. "Baseline survey and habitat analysis of aquatic salamanders in the Pigeon River, North Carolina." 2009. http://trace.tennessee.edu/utk_gradthes/545.
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The Pigeon River was severely impacted beginning in the early 1900s by a paper mill located in Canton, North Carolina. The mill discharged chemical byproducts into the Pigeon River until 1992 when the paper mill modified their processes. As a result, water quality improved but the status of salamander species in the Pigeon River was unknown. Worldwide amphibian declines over the last 20 years have drawn attention to the need for more research and a better understanding of species-specific habitat relationships. There is concern about amphibian population declines because amphibians are critical to the balance of ecosystems and are considered exceptional indicators of environmental health.The objectives of this study were: 1) to conduct a baseline survey of salamander species composition in the Pigeon River watershed, 2) to determine if salamander populations differ above and below the Canton paper mill, and 3) to attempt to explain variance in salamander abundance, richness and diversity by comparing water quality and substrate characteristics among streams. Eight stations were examined on the Pigeon River, with four stations located above the paper mill and four stations below. We also chose three stations on each of four tributaries, Big Creek, Fines Creek, Jonathan Creek and Richland Creek. Snorkel surveys were completed in the summer of 2009. Five of eight species of stream salamanders were found that historically existed in Haywood County, NC: Eastern hellbender, Blue Ridge two-lined salamander, shovel-nosed salamander, black-bellied salamander and spring salamander. No salamanders were found in the main channel of the Pigeon River below the mill. Eastern hellbenders and Blue Ridge two-lined salamanders preferred substrates consisting of rubble and avoided bedrock. Percent rubble was the only variable retained in substrate models and was positively related to salamander abundance, richness and diversity. Conductivity, salinity, and water temperature were higher in the Pigeon River below the mill than at all other sites. Salamander abundance was explained by dissolved oxygen, pH, and stream width in water quality models. The results of this study suggest salamander abundance was negatively associated with the Pigeon River below the mill because of poor water quality and not habitat availability.
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Maxwell, Nikki J. "Baseline survey and habitat analysis of aquatic salamanders in the Pigeon River, North Caroliina." 2009. http://trace.tennessee.edu/utk_gradthes/545.
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Yu, Hsiu-Pin, and 游秀彬. "Survey of the wild bird habitat at Tan-Swei river for the presence of Clostridium Botulium." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/71861313775690122949.
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碩士國立屏東科技大學
獸醫學系所
100
Clostridium botulinum is a Gram-positive, obligate anaerobic bacterium, which can produce spores in anaerobic environment. The pathogen is widely distributed over the oceans, rivers, lakes, soil and in the digestive tracts of animals. C. botulinum can produce strong neurotoxin, which were divided into A to G and mainly types C, D, C-D, D-C in avian. Botulium toxin can block the nerve conduction, thereby affecting muscle movement, breathing, heart rate, resulting in paralysis or even death. The purpose of this study is to investigate the distribution of C. botulinum/Botulium toxin in the water bird habitats along Tan-Swei river in Taiwan. The study areas in this study included the wild bird habitats along Tan-Swei river from Hwa-giang bridge to the end of Tan-Swei river (about 48 kilometers). River mud, waterfowl corpse, fish corpse and maggots in corpse were collected for C. botulinum/Botulium toxin isolation and detection. Between September 2008 and May 2010, there were 390 samples were collected, including 240 river mud samples, 28 waterfowl carcass samples, 98 fish carcass samples and 24 maggot samples in corpse. The results of C. botulinum/Botulium toxin isolation and PCR detection from these samples were all negative. During the study period, there were two C. botulinum/Botulium toxin suspected duck samples occasionally collected in Kaohsiung County. These two samples were detected PCR positive and were defined as C-D type after sequencing and phylogenetic analysis. Although the two samples were not collected from Tam-sui river, the success of the PCR detection and the procedure for type differentiation were applied in this investigation to verify the credibility. The samples collected along Tam-sui river in this study were all C. botulinum/Botulium toxin negative; however, continuing monitor is still necessary.
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Medeiros, Carlos Fernando Rodrigues. "A utilização do River Habitat Survey como ferramenta de apoio à decisão na gestão dos recursos hídricos nos Açores." Master's thesis, 2011. http://hdl.handle.net/10400.3/1311.
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Dissertação de Mestrado em Engenharia do Ambiente.A publicação da Directiva-Quadro da Água, e a consequente necessidade de caracterização e classificação das massas de água, levou ao desenvolvimento de metodologias específicas para o efeito. No caso dos rios, foi desenvolvida a metodologia River Habitat Survey (RHS), no Reino Unido, entretanto testada em vários países europeus e em adopção ao nível nacional. No presente trabalho, foi testada a aplicabilidade da metodologia RHS nos cursos de água dos Açores, através da realização de transeptos em nove ribeiras da ilha de São Miguel. Nos transeptos realizados, foram observadas cerca de 81% das características previstas no formulário RHS. Outras observações pontuais contribuíram para aumentar em 11% a representatividade das observações em cursos de água regionais face ao previsto no formulário RHS, perfazendo assim 92% do mesmo. Entre os índices de qualidade aplicados na metodologia RHS, concluiu-se que o Human Modification Score se revelou eficaz na distinção dos cursos de água testados, enquanto o Habitat Quality Assessment não se afigura adequado como índice de qualidade ecológica. Conclui-se que o RHS é aplicável à rede hidrográfica dos Açores, embora mediante a inclusão de algumas características não previstas na versão 2003 do formulário RHS, que constam na proposta de adaptação à região agora formulada.
ABSTRACT: The publication of the Water Framework Directive and the consequent need to characterize and classify water bodies led to the development of specific methodologies for that purpose. In the United Kingdom, the River Habitat Survey (RHS) was developed to support the river classification. Thereafter, this methodology was tested in several European countries and is currently being adopted at national level. The applicability of the RHS in the Azores was tested, by conducting transects in nine rivers from the island of Sao Miguel. In those transects, about 81% of the features from the RHS form were observed. Using observations other than the transepts, there were identified another 11% of the RHS features, achieving 92% of the form for the regional rivers. Among the quality indexes applied to the RHS methodology, the Human Modification score was effective in distinguishing the watercourses tested, while the Habitat Quality Assessment is not appropriate as an index of ecological quality for the Azores. In general, it is concluded that the RHS is applicable to rivers in the Azores, although it was suggested the inclusion of some specific features absent in the 2003 version of the RHS form.
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Ανδρουτσοπούλου, Αγγελική. "Οικολογική αξιολόγηση και περιβαλλοντικές επιπτώσεις έργων υποδομής στη λεκάνη απορροής του ποταμού Αλφειού." Thesis, 2010. http://nemertes.lis.upatras.gr/jspui/handle/10889/4287.
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Η υποβάθμιση της ποιότητας των υδάτων στην Ευρώπη οδήγησε το Ευρωπαϊκό Κοινοβούλιο στην έκδοση της Οδηγίας 2000/60/ΕΚ, σύμφωνα με την οποία τα επιφανειακά ύδατα πρέπει να βρίσκονται σε μια «κατάσταση που χαρακτηρίζεται καλή, τόσο από οικολογική όσο και από χημική άποψη». Στην κατεύθυνση αυτή επικεντρώθηκε και η παρούσα μελέτη για την υδρολογική λεκάνη του ποταμού Αλφειού, σε μια προσπάθεια εκτίμησης της περιβαλλοντικής του κατάστασης σε όλο του το μήκος, αλλά και προσδιορισμού των απαραίτητων δράσεων για την ολοκληρωμένη διαχείρισή του.
Ο Αλφειός είναι ο μεγαλύτερος σε μήκος (112 km) και παροχή (ετήσιο δυναμικό 2100×106 m3 ύδατος) ποταμός της Πελοποννήσου και βρίσκεται στην πέμπτη θέση των μεγαλύτερων σε μήκος ποταμών που έχουν το σύνολο της ροής τους εντός του ελληνικού εδάφους. Η λεκάνη απορροής του, έκτασης 3.600 km2, βρίσκεται στη Δυτική και Κεντρική Πελοπόννησο. Οι κυριότεροι παραπόταμοί του είναι ο Ερύμανθος, ο Λούσιος και ο Λάδωνας.
Στόχος της συγκεκριμένης ερευνητικής εργασίας είναι η εκτίμηση της ποιότητας και του βαθμού τροποποίησης των ποτάμιων ενδιαιτημάτων του Αλφειού και των παραποτάμων του από ανθρώπινες δραστηριότητες. Σε πρώτη φάση, η προσέγγιση της περιγραφής της δομής των ρεμάτων και ποταμών και της αναγνώρισης των ενδιαιτημάτων τους, έγινε με τη βοήθεια της αναγνωρισμένης μεθόδου RHS (River Habitat Survey). Ταυτόχρονα εφαρμόστηκε η μέθοδος QBR (Qualitat del Bosc de Ribera), ώστε να επιτευχθεί μια πιο ολοκληρωμένη εικόνα της οικολογικής ποιότητας των υπό μελέτη περιοχών. Στη συνέχεια, έγινε εκτίμηση των φαινομένων διάβρωσης/απόθεσης στην κοίτη και τις όχθες, με έμφαση στις περιοχές όπου εντοπίζονται ανθρώπινες παρεμβάσεις και επιχειρήθηκε η σύνδεσής τους με τα αποτελέσματα των προαναφερθέντων μεθόδων.
Με την ανάλυση και επεξεργασία των δεδομένων εντοπίσθηκαν: οι πιέσεις που δέχονται οι ποταμοί, η ποιότητα της δομής και ο βαθμός τροποποίησης των ενδιαιτημάτων τους, οι σημαντικότερες περιοχές ως προς την οικολογική ποιότητα των ποταμών, καθώς και πιθανές περιοχές προς αποκατάσταση.
Τα αποτελέσματα του RHS αναφορικά με την ποιότητα των ενδιαιτημάτων και ειδικότερα με τη σπανιότητα των χαρακτηριστικών, έδειξαν ότι στα εξετασθέντα υδάτινα σώματα δεν είχαμε συχνές τεχνικές παρεμβάσεις στην ενεργό κοίτη, με εξαίρεση τα φράγματα στις περιοχές Φλόκα και Λάμπεια. Σύμφωνα με τη βαθμολογία που προέκυψε από την επεξεργασία του πρωτόκολλου QBR, επιβεβαιώνεται ότι, η ποιότητα και το εύρος της παραποτάμιας ζώνης εξαρτάται περισσότερο από την παρουσία ή μη ανθρώπινων παρεμβάσεων, παρά από τα γεωμορφολογικά χαρακτηριστικά της περιοχής. Γενικότερα, τα αποτελέσματα της μελέτης έδειξαν πως η διακύμανση της υδρομορφολογικής κατάστασης είναι ανάλογη των πιέσεων που δέχονται οι ποταμοί, στις επιμέρους παραμέτρους (όχθες, παρόχθια ενδιαιτήματα κ.λπ.).
Ως προς τα φαινόμενα απόθεσης και διάβρωσης στο μέσο και κάτω ρου του Αλφειού, σύμφωνα με τα δεδομένα του Corine, μέσα σε μια δεκαετία μειώθηκε το εύρος της κοίτης του ποταμού κατά 730 km2, δηλαδή κατά 7,2%. Πρόκειται για το τμήμα του ποταμού που δέχεται τις περισσότερες ανθρώπινες επιδράσεις, οι οποίες περιλαμβάνουν εκτός από εκτεταμένες καλλιέργειες, πολλά τεχνικά έργα και σημεία αμμοχαλικοληψίας. Αντίστοιχο αποτέλεσμα προέκυψε και μετά την ανάλυση των αλλαγών του πλάτους της ενεργού κοίτης, από την περίοδο 1965-1967 έως την περίοδο 2007-2009, χρησιμοποιώντας τους τοπογραφικούς χάρτες της Γ.Υ.Σ. και τους ψηφιακούς χάρτες της ΚΤΗΜΑΤΟΛΟΓΙΟ Α.Ε. αντίστοιχα. Συγκεκριμένα, μέσα σε περίπου 40 χρόνια, κατά μέσο όρο το πλάτος της ενεργού κοίτης στο μέσο και κάτω ρου του Αλφειού μειώθηκε κατά 27 m (28%).
Συμπερασματικά, θα μπορούσε κανείς να πει ότι, αν και οι ανθρώπινες δραστηριότητες (εντατικές καλλιέργιες, τεχνικά έργα, αμμοχαλικοληψίες κ.λ.π) που έχουν αναπτυχθεί κατά μήκος του ποταμού και των παραπόταμών του έχουν οδηγήσει στην υποβάθμιση των παρόχθιων οικοσυστημάτων, μερικές σχεδόν απρόσβλητες περιοχές υπάρχουν ακόμα. Επομένως, ελπίζουμε ότι η οικολογική αξιολόγηση του ποταμού Αλφειού θα είναι ένα χρήσιμο εργαλείο για την ολοκληρωμένη διαχείριση της λεκάνης απορροής του ποταμού.The degradation of the water quality in Europe led the European Parliament to the publication of The Water Framework Directive 2000/60/EC on Water Policy, which requires that physical, chemical and biological parameters of inland waters are measured in order to determine whether ‘high’ or ‘good’ ecological status has been maintained or achieved. In this context, the present study is an effort not only to estimate the ecological status of the Alfeios River basin, but also to determine actions necessary for its integrated management. Alfeios River is the greatest in length (112 km) and flow rate (2100×106m3) river in Peloponnisos and constitutes an important water resource for Western Greece. Alfeios River is also the fifth longest river in Greece among those which have their whole route in the Greek territory. The river basin covers 3600 km2 and extends in Western and Central Peloponnisos. Its main tributaries are the rivers Erymanthos, Lousios and Ladonas. The object of this study is the evaluation of the quality and modification level of Alfeios river habitats, due to human activities. At first, the description of the streams’ and rivers’ structure and the recognition of their habitats was based on the widely used methodology of R.H.S. (River Habitat Survey). Simultaneously, the methodology of QBR (Qualitat del Bosc de Ribera) was applied, in order to obtain a complete view on the ecological status of the study area. After that, we estimated the erosional/depositional phenomena in the watercourse and the banks, emphasising in the sites where human interventions are located and we attempted to connect them with the results of the methods mentioned above. After the data analysis and elaboration we evaluated: the stresses applied on the rivers, the structural quality and the modification degree of the river habitats, the most important areas for their high ecological quality and those which need to be restored. The results of RHS regarding the river habitats’ quality and more specifically the special characteristics showed that, there are not any frequent technical interventions in the river bed, with the exception of the dams in the Floka and Lampeia areas. On the contrary, the pressures sustained by the entire flood plain are frequent and intense. According to the total score of the QBR protocol, it is confirmed that, the quality and the extent of the riparian area depend more on the presence or absence of human activities than on the geomorphological characteristics of the areas. In general, the results of the study demonstrate that the fluctuation of the hydromorphological condition is proportional to the stresses sustained by the rivers in total, by their individual parameters (banks, riparian habitats etc.). According to Corine data, as far as the deposition and erosion phenomena in medium and lower watercourse of Alfeios are concerned, in one decade the width of the river’s watercourse decreased by 730 km2, or 7,2%. It is the river part that undergoes most of the human activities, including extensive agricultural plains, infrastructure and many sand and gravel extraction sites. Matching results were met after studying the changes of the active riverbed’s width from comparing data of the time periods of 1965-1967 until 2007-2009, obtained from topographic maps of the Army’s Geographic Department and the digital maps of KTIMATOLOGIO AE respectively. According to these results, in roughly 40 years the average width of the active riverbed decreased, in the medium and low watercourse of Alfeios, for 27 m (28%). As a conclusion, it is safe to say that Alfeios River constitutes the main water source of Western and Central Peloponnisos, supporting the neighboring communities. Although human activities such as settlements, agroindustries, pumping or deviation of water for irrigation, infrastructure works (dams, bridges), gravel extraction etc. have been developed along the river and its tributaries for a long time and have led to the degradation of the riparian ecosystems, some almost unaffected regions do still exist. Therefore, we hope that the ecological evaluation of the Alfeios River will be a useful tool for the sustainable management of the whole catchment area.
Books on the topic "River habitat survey"
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Thom, Barry A. Reference site selection and survey results, 2000. Corvallis, Or: Aquatic Inventories Project, Oregon Dept. of Fish and Wildlife, 2001.
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Gilleland, Cevin. Fish habitat survey of proposed Copper River Highway corridors: Copper River (Million Dollar Bridge to Tiekel River), Tasnuna River drainage, Tiekel River drainage. Anchorage, AK: Alaska Dept. of Fish and Game, Habitat and Restoration Division, 1992.
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Bonney, Forrest R. Biological survey of the South Branch of the Dead River. Augusta, Me: Maine Dept. of Inland Fisheries and Wildlife, Fisheries and Hatcheries Division, 2004.
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Bigelow, Patricia E. Evaluation of the Sacramento River Spawning Gravel Restoration Project and winter-run chinook salmon redd survey, 1987-1993: USFWS final report. Red Bluff, Calif. (10950 Tyler Rd., Red Bluff 96080): U.S. Fish and Wildlife Service, Northern Central Valley Fish and Wildlife Office, 1996.
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Bumgarner, Joseph D. Tucannon River instream habitat alteration projects: 1999 habitat evaluation surveys. Dayton, Wash: Washington Dept. of Fish and Wildlife, Fish Program/Science Division, Snake River Lab, 2000.
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Kirsch, Jonathan M. Fish inventory and anadromous cataloging in the Susitna River, Matanuska River, and Knik River basins, 2003 and 2011. Anchorage: Alaska Department of Fish and Game, Division of Sport Fish, Research and Technical Services, 2014.
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Hinton, Susan A. In-water restoration between Miller Sands and Pillar Rock Island, Columbia River: Environmental surveys, 1992-93. Seattle, WA: U.S. Dept. of Commerce, National Oceanic and Atmoospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, 1995.
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Hinton, Susan A. In-water restoration between Miller Sands and Pillar Rock Island, Columbia River: Environmental surveys, 1992-93. Seattle, WA: U.S. Dept. of Commerce, National Oceanic and Atmoospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, 1995.
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Lewis, Lori J. Stream habitat characteristics at selected sites in the Georgia-Florida coastal plain. Tallahassee, Fla. (227 N. Bronough St., Suite 3015, Tallahassee 32301-1372): U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
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Lewis, Lori J. Stream habitat characteristics at selected sites in the Georgia-Florida coastal plain. Tallahassee, Fla. (227 N. Bronough St., Suite 3015, Tallahassee 32301-1372): U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
Find full textBook chapters on the topic "River habitat survey"
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Raven, P. J., N. T. H. Holmes, M. Naura, and F. H. Dawson. "Using river habitat survey for environmental assessment and catchment planning in the U.K." In Assessing the Ecological Integrity of Running Waters, 359–67. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4164-2_29.
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Brysiewicz, Adam, and Przemysław Czerniejewski. "Assessing Hydromorphological Characteristics of Small Watercourses Using the River Habitat Survey (RHS) Method." In Infrastructure and Environment, 144–53. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16542-0_20.
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Szoszkiewicz, Krzysztof, Andrea Buffagni, John Davy-Bowker, Jacek Lesny, Bogdan H. Chojnicki, Janina Zbierska, Ryszard Staniszewski, and Tomasz Zgola. "Occurrence and variability of River Habitat Survey features across Europe and the consequences for data collection and evaluation." In The Ecological Status of European Rivers: Evaluation and Intercalibration of Assessment Methods, 267–80. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5493-8_19.
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Erba, Stefania, Andrea Buffagni, Nigel Holmes, Mattie O’Hare, Peter Scarlett, and Alberta Stenico. "Preliminary testing of River Habitat Survey features for the aims of the WFD hydro-morphological assessment: an overview from the STAR Project." In The Ecological Status of European Rivers: Evaluation and Intercalibration of Assessment Methods, 281–96. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5493-8_20.
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Hurford, Clive. "Observer Variation in River Macrophyte Surveys." In Biological Monitoring in Freshwater Habitats, 137–46. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9278-7_14.
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"Anadromous Sturgeons: Habitats, Threats, and Management." In Anadromous Sturgeons: Habitats, Threats, and Management, edited by Nathaniel Corey Oakley and Joseph E. Hightower. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569919.ch15.
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Abstract. – Shortnose sturgeon <em>Acipenser brevirostrum</em> historically occurred in most major Atlantic Coast rivers from Saint Johns River, New Brunswick, Canada to St. John’s River, Florida. However, there are few records of shortnose sturgeon occurrences within North Carolina and none from the Neuse River. We conducted a 2-year intensive gill-net survey, following the National Marine Fisheries Service sampling protocol, and a reward program in order to determine their population status within the Neuse River. No shortnose sturgeon were observed, although 10 juvenile Atlantic sturgeon (506–992 mm fork length) were encountered. Habitat surveys of the lower Neuse River, where shortnose sturgeon would be expected to occur during summer, showed that bottom waters were severely hypoxic during June–September of 2001–2002. A juvenile Atlantic sturgeon tagged with an ultrasonic transmitter moved upstream of the unsuitable summer habitat and remained in a restricted area until late fall, when water quality improved due to increased flows and lower temperatures. We developed logistic regression models of watershed and river characteristics based on 36 Atlantic Coast rivers with a known presence or absence of shortnose sturgeon. Model predictions suggest that the Neuse River should contain a population of shortnose sturgeon based on the amount of physical habitat. We hypothesize that shortnose sturgeon have been extirpated from the Neuse River due to a lack of suitable summer habitat. Population recovery may be impossible until habitat quality can be improved.
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Moll, Don, and Edward O. Moll. "Communities and Habitats." In The Ecology, Exploitation and Conservation of River Turtles. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195102291.003.0006.
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Rivers are dynamic and diverse ecosystems composed of a variety of habitats including the main channel, side channel, flood plain and backwater lakes as discussed briefly in chapter 2. Each habitat typically contains a characteristic assemblage of turtles (herein considered synonymous with a chelonian community). Although riverine chelonians may appear anywhere in the river, most species specialize in one or more habitats where they occur in maximum numbers and biomass. Thus, the various habitats of the river may have similar species composition but the rank abundance for each species will differ. Basic divisions of typical rivers are lotic (flowing water) habitats and the lentic (still water) habitats. Beyond this, habitat divisions involve such physical features as gradient (headwaters versus lower reaches), substrate (sand, gravel, and mud), size (feeder streams versus the river proper), shoreline heterogeneity (wooded, marsh, swamp, etc.) and even temperature. One can expect differences in species composition associated with any of these habitat features. The composition of river turtle communities is affected by the biotic as well as the physical environment of the stream. The presence or absence of lower and higher plants, competing species, or predators can all affect community composition. This chapter is chiefly concerned with assemblages of species rather than the individual species comprising these groups. It will examine the composition of river turtle communities, their ecology, and their evolution. The concept that organisms occur in assemblages of species interacting to produce distinctive community characteristics was neglected for many years in the herpetological literature. Prior to the mid-1960s, most ecological research on reptiles was autecological (Scott, 1982). Nevertheless, a scattering of early papers described chelonian assemblages associated with particular habitats. Evermann and Clark’s biological survey of Lake Maxinkuckee in 1920 included an overview of the turtle community. In 1942, Fred Cagle delineated the species composition and relative abundance of turtles inhabiting six lentic habitats in southern Illinois. In 1950 he published a similar report with A. H. Chaney on ten lentic and two lotic habitats in Louisiana. Tinkle (1959) compared the species composition and relative abundance of species above and below the “fall line” in five United States rivers emptying into the Gulf of Mexico.
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"Landscape Influences on Stream Habitats and Biological Assemblages." In Landscape Influences on Stream Habitats and Biological Assemblages, edited by Lizhu Wang, Paul W. Seelbach, and Robert M. Hughes. American Fisheries Society, 2006. http://dx.doi.org/10.47886/9781888569766.ch1.
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<em>Abstract.</em>—Viewing river systems within a landscape context is a relatively new and rapidly developing approach to river ecology. Although the linkages among landscapes and associated physicochemical and biological characteristics of rivers have long been recognized, the development of conceptual frameworks and tools for measuring and synthesizing such linkages is relatively recent. In this book, authors from the United States and Canada explore new ideas about landscape–river relationships, river research, and river management; compile large regional, spatially referenced, survey data sets on river network characteristics; explore and describe patterns and relationships across survey sites, reaches, and catchments; and develop management and decision tools. In synthesizing these chapters, we have identified key challenges to studying and managing landscape–river systems. Key challenges include identifying appropriate units of measurement and interpretation of the river network, understanding how human alterations of land cover modify river characteristics and biological assemblages, understanding and measuring how various spatial-scale factors interactively influence instream habitat and biota, and collecting and gathering appropriate landscape and instream habitat data. This book also reveals the major current knowledge gaps that deserve more attention in landscape–river ecology. These include improving river–landscape classification, capturing appropriate spatial- and temporal-scale data, developing accurate predictive models where study data are limited, and improving our ability to measure connectivity among river segments and their networks. Future research that focuses on overcoming the challenges and filling the knowledge gaps will substantially improve our understanding of river ecosystems, fuel the development of tools for linking the functions and processes operating at different spatial- and temporal-scales, and stimulate the development of new hypotheses and frameworks to provide foundations for the next phases of riverine science and management.
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"Black Bass Diversity: Multidisciplinary Science for Conservation." In Black Bass Diversity: Multidisciplinary Science for Conservation, edited by Zachary A. Thomas, Thomas L. Arsuffi, and Stephan J. Magnelia. American Fisheries Society, 2015. http://dx.doi.org/10.47886/9781934874400.ch13.
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<em>Abstract</em>.—The Guadalupe Bass <em>Micropterus treculii</em> is a central Texas endemic black bass species occurring only in streams and rivers draining the Edwards Plateau ecoregion. It is designated the state fish of Texas and provides a popular sport fishery. In addition to being a popular sport fish, it is listed as a species of special concern due to habitat degradation and hybridization with Smallmouth Bass <em>M. dolomieu</em>. Past socioeconomic surveys of Texas black bass anglers have focused primarily on reservoir fisheries while little is known about fishing patterns, economic impact, and preferences of river and stream anglers. A Web-based open-access survey was used to determine fishing characteristics, assess attitudes and quantify the economic impact of anglers fishing rivers and streams in a 24-county region of Texas from August 20, 2011 to December 20, 2012, with a focus on anglers who specifically fished for Guadalupe Bass. A total of 700 respondents participated in the survey. More than half of respondents were paddlers targeting black bass, and 42% specifically fished for Guadalupe Bass on their trips. An additional 34% of anglers listed black bass species, which included Guadalupe Bass as their preferred species. Similar to previous surveys of Texas river and stream anglers, access was identified as the largest impediment to the future maintenance and improvement of river and stream fishing. Based on 563 surveys used in the economic impact analysis, using IMPLAN (Impact Analysis for Planning) Professional version 2 (Minnesota IMPLAN Group, Minneapolis), an estimated US$74,182,080 in direct angler expenditures was spent on fishing trips to the study region, resulting in a total economic impact (including indirect and induced impacts) of $71,552,492 and 776 full-time jobs. These findings indicate the economic value of river and stream angling to the Texas economy.
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"Multispecies and Watershed Approaches to Freshwater Fish Conservation." In Multispecies and Watershed Approaches to Freshwater Fish Conservation, edited by Stephen T. Hurley. American Fisheries Society, 2019. http://dx.doi.org/10.47886/9781934874578.ch21.
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<em>Abstract</em>.—Waquoit Bay is a coastal estuary located on the south side of Cape Cod. The primary rivers feeding the bay, the Quashnet and Childs rivers, are small, coldwater, groundwater-fed streams. Most of the watersheds of both rivers were originally set aside in the 1600s as a plantation for the Native American Mashpee Wampanoag tribe. The rivers were heavily modified in the late 1700s by the building of mill dams and later in the 1800s by cranberry agriculture. The anadromous Brook Trout <em>Salvelinus fontinalis </em>fisheries in both rivers were acclaimed in the early 1800s. Anadromous river herring <em>Alosa </em>spp. runs were created on both streams by connecting the streams to Johns Pond, a natural kettle hole pond. After anadromous Brook Trout populations declined due primarily to habitat loss, efforts were initiated in the 1950s to restore anadromy to Brook Trout in Cape Cod rivers by overstocking with hatchery Brook Trout. After this project, land protection along the river started with the purchase of abandoned cranberry bogs. Both rivers were heavily stocked with Brown Trout <em>Salmo trutta </em>in the 1970s and 1980s to create a sea-run Brown Trout fishery. In 1976, Trout Unlimited began an ongoing habitat improvement project in the Quashnet River. In the 1970s and 1980s, the rapid development of Cape Cod threatened the watershed. In 1988, the Waquoit Bay National Estuarine Research Reserve was formed and the Commonwealth of Massachusetts purchased land in the watershed to preserve it as open space. As part of the purchase agreement, a potential well site was reserved, which led to studies by the U.S. Geological Survey on the hydrology of the Quashnet River and the impact of potential wells. In the early 1990s, fisheries management shifted away from the stocking of Brown Trout to focus on the native Brook Trout fishery. The Mashpee National Wildlife Refuge, a consortium of landowners centered on Waquoit Bay, was formed in 1995. In 1997, the contaminant ethylene dibromide from the former Otis Air Force Base Superfund site was found to be entering the upper Quashnet River. This led to the creation of a system of berms and groundwater extraction systems. The failure of part of the berm system led to concerns about fisheries impacts, and a restoration plan was developed. A Brook Trout passive integrated transponder tagging project was initiated on the Quashnet River in 2007, and the Brook Trout population has been annually sampled since 2000. In 2008–2010, adult wild Brook Trout from the Quashnet River were transplanted to the Childs River and a wild Brook Trout population was reestablished. Nitrogen loading from the watershed has become a major issue for the Waquoit Bay estuary, causing algae blooms and water-quality impacts. The fisheries of the Waquoit Bay tributaries have been protected and enhanced by an ongoing combination of land protection, fisheries management and research activities, and habitat improvements involving a wide variety of partners. Watershed development and potential climate change continue to threaten both the estuarine resources of Waquoit Bay and the native freshwater and diadromous fisheries of its tributaries.
Conference papers on the topic "River habitat survey"
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Marchamalo, Miguel, María-Dolores Bejarano, Diego García de Jalón, and Rubén Martínez Marín. "Fish habitat characterization and quantification using lidar and conventional topographic information in river survey." In Remote Sensing, edited by Christopher M. U. Neale, Manfred Owe, and Guido D'Urso. SPIE, 2007. http://dx.doi.org/10.1117/12.737803.
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O’Rourke, Dan J. "Corridor Pipeline: Hartley Creek Crossing." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27126.
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Construction of the 493 km Corridor Pipeline System commenced in summer 2000, and is scheduled for completion in 2002. The system connects the two major components of the Athabasca Oil Sands Project — the Muskeg River Mine, north of Ft. McMurray and the Upgrader adjacent to Shell Canada Limited’s Scotford Refinery, near Fort Saskatchewan. The pipeline will also link the Upgrader with terminals in the Edmonton Area. The system includes dual pipelines (610 mm and 323.9 mm O.D.) as well as associated pump stations and valve sites. Corridor Pipeline Limited is a wholly-owned subsidiary of BC Gas Inc. Corridor pipeline crosses Hartley Creek near the south boundary of Shell’s lease C-13, north of Ft. McMurray, in the Ft. McKay First Nations traditional lands. An evaluation of the proposed crossing completed for the project application identified the location as highly sensitive to pipeline construction activities because of the high fish habitat quality and historical presence of sport and coarse fish. Although a fish survey completed for the above evaluation identified only coarse fish species, the provincial approval for the project required a trenchless crossing method unless authorized in writing by the Director. After completing detailed geotechnical and fisheries assessments of the crossing site, authorization from the director was subsequently obtained to complete the crossing using an isolation method. Planning and consultation with Ft. McKay First Nations to construct through their traditional lands incorporated aspects of traditional ecological knowledge. As part of the program, Corridor Pipeline committed to completion of a traditional plant survey. The results of the survey identified Hartley Creek as having cultural significance to the band. The riparian zone in this area supports a large concentration of food and medicinal plant species. Specialized mitigative measures were incorporated in order to maintain the density and diversity of the Hartley Creek riparian zone. This paper presents information with regard to the environmental studies and the regulatory process used to obtain approval to complete construction of the Hartley Creek crossing using an isolation method instead of the trenchless method originally required by the provincial government. It also explains the consultation program with the Ft. McKay First Nations and environmental planning used to maintain the density and diversity of riparian vegetation at this culturally significant crossing location.
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Tamás, Enikő Anna, István Göttlinger, Emese Kutassy, and György Varga. "LOWLAND RUNOFF SURVEY AND MODELING FOR DECISION SUPPORT IN MANAGEMENT OF THE TRANSBOUNDARY PALIC-LUDAS CATCHMENT AREA." In XXVII Conference of the Danubian Countries on Hydrological Forecasting and Hydrological Bases of Water Management. Nika-Tsentr, 2020. http://dx.doi.org/10.15407/uhmi.conference.01.21.
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Palic and Ludas lakes are located in the northern part of Vojvodina, Serbia near the town of Subotica, just a few kilometers south of the Hungarian border. While Palic lake has a long history as a tourist attraction and a nice recreational setting, Ludas lake and the surrounding steppe plains are habitats of international importance and protected by the Ramsar convention on wetlands. The lakes are connected through the Palic-Ludas canal. Thus Ludas lake is fed partially from Palic lake, but also supplied by the Körös river. The majority of the catchment area of the Körös river is in Hungary, this way the water supply problems related to the lakes are transboundary. The lake system is also drained by the Körös, which finally enters the Tisza river. Water quality problems and water quantity decrease are both identified and are escalating threatening factors at the lake system in the past decades. Several studies have been carried out in the past about the possible reasons and solutions. The authors have studied the previously published results and have been participating in a cross-border cooperation project funded by the IPA, in frame of which a comprehensive survey and measurement program has been carried out in order to develop, among others, a rainfall-runoff model of the catchment for the investigation of water supply scenarios of the lake system in order to substantiate a monitoring network and program for the sustainable management of the lakes. In our article we introduce the area, the problem, the field surveying and measurement methodologies and results, the modeling process and the model itself, concluding transboundary responsibility for water supply to the lake system, with a possible complex connection to one of Hungary’s major water management issues.
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Giraldo, Diego Garcia, and Ronald W. Yeung. "The Deep-Water-Horizon Spill: Flow-Rate Estimation Based on Satellite Images." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-84153.
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The “Deep Water Horizon” Mobil Offshore Drilling Unit (MODU) is one of several classes of floatable drilling machines. As a consequence of the accident on April 20, 2010, the worst ecological disaster with regard to oil spills in the US history was generated in the Gulf of Mexico, causing extensive damage to marine and wildlife habitats, as well as the Gulf’s fishing and tourism industries. Since that moment, experts are trying to estimate the total amount of oil being lost into the sea. The objective of this presentation is to report a procedure developed in the first author’s thesis1 an independent and logical estimate of the oil flow rate into the Gulf of Mexico produced by the rupture in this rig. There are a number of possible approaches to estimate the flow rate of oil spilling into the Gulf of Mexico. The Plume Modeling Team has developed an approach by observing video image of the oil/gas mixture escaping from the kinks in the riser and the end of the riser pipe. The Mass Balance Team has developed a range of values using USGS (US Geological Survey) and NOAA (National Oceanic and Atmospheric Administration) data analysis collected from NASA’s (National Aeronautics and Space Administration) Airborne Visible InfraRed Imaging Spectrometer (AVIRIS). Finally, a reality-check estimate was based on the amount of oil collected by the Riser Insertion Tube Tool (RITT) plus the estimate of how much oil is escaping from the RITT, and from the kink in the riser. However, there are several limitations in each of these techniques.
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Pyrialakou, V. Dimitra, and Konstantina “Nadia” Gkritza. "Exploring the Opinions of Passenger Rail Riders: Evidence From the Hoosier State Train." In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5778.
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Ridership on Midwest passenger rail lines has been steadily increasing over the past two decades. Between 2005 and 2014, there has been a growth of more than 65 percent, much higher than the national average (approximately 30 percent for the same years). Nevertheless, a number of lines have discontinued their services or are in danger of discontinuance. For example, Kentucky Cardinal, operating between Chicago, Illinois and Louisville, Kentucky was discontinued in 2003, and the Three Rivers train, operating between Chicago, Illinois and New York, New York was discontinued in 2005. The Hoosier State train running between Indianapolis, Indiana and Chicago, Illinois would have faced the same fate recently, if not for the financial support that the state and communities have been providing since 2013. As of October 1, 2013, the State of Indiana, local communities, and Amtrak reached an agreement to support the Hoosier State line for the following fiscal year (2013–2014), and the agreement has continued ever since. In the meantime, the Indiana Department of Transportation (INDOT) was the first nationally to announce a Request for Proposals to seek competing solutions from independent providers, as allowed by the Passenger Rail Investment and Improvement Act of 2008 (PRIIA), in order to obtain private-sector competitive bids for the operation of the Hoosier State train. Recently, after many unfruitful attempts and many obstacles, INDOT reached an agreement with Iowa Pacific Holdings. The company has been providing the locomotives for the line since August 2015, and collaborates with Amtrak to keep the train in service, with a shared vision to increase service frequency, improve speed and maintain a reliable schedule, and provide better on-board amenities. However, to ensure the financial viability of the system and support any improvement or expansion, an increase in ridership is necessary. To achieve this, it is essential that we understand the opinions of Indiana residents, passengers of the Hoosier State train, and advocates of the line towards passenger rail. This paper presents the results of a survey that was conducted on board the Hoosier State train to solicit information pertaining to the perceived ease of use and usefulness of the passenger rail services, riders’ opinions, and other factors that might affect behavior toward passenger rail transportation, as well as factors that affect an individual’s mode choice in general, such as habitual automobile behavior, or external impedance factors like schedule and route restrictions. The survey was endorsed by INDOT and approved by Amtrak and Iowa Pacific Holdings. In addition, this paper presents how opinions toward passenger rail differ among different groups based on socioeconomic and demographic characteristics, familiarity with passenger rail transportation in general and the Hoosier State train specifically, and usage. Furthermore, in order to prioritize service improvements that can foster an increase in the Hoosier State ridership, this paper explores mode choice decisions through the use of a multi-attribute attitude model. The results of this paper can guide policy and planning decision making that aims to foster an increase in passenger rail ridership through a mode shift from personal automobiles and competing mass transportation systems, such as airlines and intercity buses.
Reports on the topic "River habitat survey"
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Wagner, Mark J., and Michael J. McNerney. A Phase 1 Archaeological Survey for Historic Properties within the Carlyle Lake Wildlife Management Project, Habitat Restoration Project, Section 1135, Carlyle Lake, Kaskaskia River, Fayette County, Illinois. Fort Belvoir, VA: Defense Technical Information Center, December 1993. http://dx.doi.org/10.21236/ada330881.
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Bryant, M. D. The Copper River Delta pulse study: an interdisciplinary survey of aquatic habitats. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1991. http://dx.doi.org/10.2737/pnw-gtr-282.
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Aitken, J. A., and T. D. Feeney. Two centimetre-level Global Positioning System surveys of intertidal habitat, Fraser River delta, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193643.
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McIntosh, Bruce A., Sharon E. Clark, and James R. Sedell. Summary Report for Bureau of Fisheries Stream Habitat Surveys: Cowlitz River Basin, 1934-1942 Final Report. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/5752859.
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McIntosh, Bruce A., Sharon E. Clark, and James R. Sedell. Summary Report for Bureau of Fisheries Stream Habitat Surveys : Willamette River Basin, 1934-1942, Final Report. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/925399.
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McIntosh, Bruce A., Sharon E. Clark, and James R. Sedell. Summary Report for Bureau of Fisheries Stream Habitat Surveys : Yakima River Basin, 1934-1942, Final Report. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/925615.
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Cooper, Christopher, Jacob McDonald, and Eric Starkey. Wadeable stream habitat monitoring at Congaree National Park: 2018 baseline report. National Park Service, June 2021. http://dx.doi.org/10.36967/nrr-2286621.
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The Southeast Coast Network (SECN) Wadeable Stream Habitat Monitoring Protocol collects data to give park resource managers insight into the status of and trends in stream and near-channel habitat conditions (McDonald et al. 2018a). Wadeable stream monitoring is currently implemented at the five SECN inland parks with wadeable streams. These parks include Horseshoe Bend National Military Park (HOBE), Kennesaw Mountain National Battlefield Park (KEMO), Ocmulgee Mounds National Historical Park (OCMU), Chattahoochee River National Recreation Area (CHAT), and Congaree National Park (CONG). Streams at Congaree National Park chosen for monitoring were specifically targeted for management interest (e.g., upstream development and land use change, visitor use of streams as canoe trails, and potential social walking trail erosion) or to provide a context for similar-sized stream(s) within the park or network (McDonald and Starkey 2018a). The objectives of the SECN wadeable stream habitat monitoring protocol are to: Determine status of upstream watershed characteristics (basin morphology) and trends in land cover that may affect stream habitat, Determine the status of and trends in benthic and near-channel habitat in selected wadeable stream reaches (e.g., bed sediment, geomorphic channel units, and large woody debris), Determine the status of and trends in cross-sectional morphology, longitudinal gradient, and sinuosity of selected wadeable stream reaches. Between June 11 and 14, 2018, data were collected at Congaree National Park to characterize the in-stream and near-channel habitat within stream reaches on Cedar Creek (CONG001, CONG002, and CONG003) and McKenzie Creek (CONG004). These data, along with the analysis of remotely sensed geographic information system (GIS) data, are presented in this report to describe and compare the watershed-, reach-, and transect-scale characteristics of these four stream reaches to each other and to selected similar-sized stream reaches at Ocmulgee Mounds National Historical Park, Kennesaw Mountain National Battlefield Park, and Chattahoochee National Recreation Area. Surveyed stream reaches at Congaree NP were compared to those previously surveyed in other parks in order to provide regional context and aid in interpretation of results. edar Creek’s watershed (CONG001, CONG002, and CONG003) drains nearly 200 square kilometers (77.22 square miles [mi2]) of the Congaree River Valley Terrace complex and upper Coastal Plain to the north of the park (Shelley 2007a, 2007b). Cedar Creek’s watershed has low slope and is covered mainly by forests and grasslands. Cedar Creek is designated an “Outstanding Resource Water” by the state of South Carolina (S.C. Code Regs. 61–68 [2014] and S.C. Code Regs. 61–69 [2012]) from the boundary of the park downstream to Wise Lake. Cedar Creek ‘upstream’ (CONG001) is located just downstream (south) of the park’s Bannister Bridge canoe landing, which is located off Old Bluff Road and south of the confluence with Meyers Creek. Cedar Creek ‘middle’ and Cedar Creek ‘downstream’ (CONG002 and CONG003, respectively) are located downstream of Cedar Creek ‘upstream’ where Cedar Creek flows into the relatively flat backswamp of the Congaree River flood plain. Based on the geomorphic and land cover characteristics of the watershed, monitored reaches on Cedar Creek are likely to flood often and drain slowly. Flooding is more likely at Cedar Creek ‘middle’ and Cedar Creek ‘downstream’ than at Cedar Creek ‘upstream.’ This is due to the higher (relative to CONG001) connectivity between the channels of the lower reaches and their out-of-channel areas. Based on bed sediment characteristics, the heterogeneity of geomorphic channel units (GCUs) within each reach, and the abundance of large woody debris (LWD), in-stream habitat within each of the surveyed reaches on Cedar Creek (CONG001–003) was classified as ‘fair to good.’ Although, there is extensive evidence of animal activity...
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Seals, Jason, and Kelly Reis. Bull Trout Population and Habitat Surveys in the Middle Fork Willamette and McKenzie Rivers, Annual Report 2002. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/962834.
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McIntosh, Bruce A., Sharon E. Clark, and James R. Sedell. Summary Report for Bureau of Fisheries Stream Habitat Surveys : Clearwater, Salmon, Weiser, and Payette River Basins, 1934-1942, Final Report. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/925398.
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McIntosh, Bruce A., Sharon E. Clark, and James R. Sedell. Summary Report for Bureau of Fisheries Stream Habitat Surveys : Umatilla, Tucannon, Asotin, and Grande Ronde River Basins, 1934-1942, Final Report. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/925397.
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