Estimation of Physical Habitat Characteristics Using Automation and Geodesic-Based Sampling

Parasiewicz, Piotr

doi:10.1002/(sici)1099-1646(199611)12:6<575::aid-rrr400>3.0.co;2-k

Cited by 10 publications

(4 citation statements)

References 6 publications

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“…The use of a theodolite with an electronic distance meter (EDM) and automatic data logging facility was reviewed by Parasiewicz (1996) based on its application to 79 rivers in Austria, Switzerland and Germany since 1990. This cuts out the time needed to set up tape measures across the channel at every crosssection of interest, set up the level with its horizontal and vertical controls, manually record survey data in the field and subsequently enter the data into a computer for analysis at a later date.…”

Section: Discussionmentioning

confidence: 99%

The importance of physical habitat assessment for evaluating river health

1999

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Summary 1. Physical habitat is the living space of instream biota; it is a spatially and temporally dynamic entity determined by the interaction of the structural features of the channel and the hydrological regime. 2. This paper reviews the need for physical habitat assessment and the range of physical habitat assessment methods that have been developed in recent years. These methods are needed for assessing improvements made by fishery enhancement and river restoration procedures, and as an intrinsic element of setting environmental flows using instream flow methods. Consequently, the assessment methods must be able to evaluate physical habitat over a range of scales varying from the broad river segment scale (up to hundreds of kilometres) down to the microhabitat level (a few centimetres). 3. Rapid assessment methods involve reconnaissance level surveys (such as the habitat mapping approach) identifying, mapping and measuring key habitat features over long stretches of river in a relatively short space of time. More complex appraisals, such as the Physical Habitat Simulation System (PHABSIM), require more detailed information on microhabitat variations with flow. 4. Key research issues relating to physical habitat evaluation lie in deciding which levels of detail are appropriate for worthwhile yet cost‐effective assessment, and in determining those features that are biologically important and hence can be considered habitat features rather than simple geomorphic features. 5. The development of new technologies particularly relating to survey methods should help improve the speed and level of detail attainable by physical habitat assessments. These methods will provide the necessary information required for the development of the two‐and three‐dimensional physical and hydraulic habitat models. 6. A better understanding of the ways in which the spatial and temporal dynamics of physical habitat determine stream health, and how these elements can be incorporated into assessment methods, remains a key research goal.

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Section: Discussionmentioning

confidence: 99%

The importance of physical habitat assessment for evaluating river health

1999

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“…Parasiewicz (1996) and Wyatt (2003) showed how interpolation could be used with survey data to map spatial representations of river reaches. Knowledge of spatial position of sampling points can also be used to improve representation, even where, as an end‐point, maps are not required.…”

Section: Data Collection For Hydraulic‐habitat Modellingmentioning

confidence: 99%

Hydraulic‐habitat modelling for setting environmental river flow needs for salmonids

Dunbar

Alfredsen

Harby

2011

Fisheries Management Eco

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There is an increasing demand for tools to assist in the management of environmental flows in rivers. Changes in river discharge act on biota through a hydraulic template, which is mediated by channel morphology. Hence, environmental flow assessments also need to consider channel morphology, especially if morphology has been altered by human activities. Computer models describing the preferences of fish for hydraulic microhabitats have been applied to environmental flow problems since the mid‐1970s. Salmonids have been a particular focus for these methods. Other reviews have provided comprehensive coverage of the basic features and principles of such models. These are briefly discussed focusing on the developments that have occurred in the last 15 years and whose application has so far been infrequent. These include improvements to the representation of hydraulics at reach‐scale and of longer river sections, and improved representation of interacting physical variables that describe habitat. The central theme is the spatial coverage and fundamental granularity of such models. Despite a broad literature, there is a lack of documented examples of the application of hydraulic‐habitat models through all stages in the environmental flow decision‐making process. The review concludes with four short examples that illustrate the use of model output.

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“…Global positioning by satellite (GPS) technology is currently not sufficiently accurate or efficient for recording positions in small domains. The geodesic-based irregular systematic sampling method is most commonly used at HFA for data collection (Parasiewicz, 1996).…”

Section: Data Requirements and Measurement Techniquesmentioning

confidence: 99%

“…Another is to reduce collection effort using more sophisticated sampling strategies and technology. A variety of such strategies have been developed over the past two decades (Gordon et al, 1992;Bovee, 1994;Le Coarer and Dumont, 1995;Parasiewicz, 1996). Rapid development of technology catalyses improvements in instrumentation.…”

Section: Introductionmentioning

confidence: 99%

The DVP (Depth Velocity Position) bar—a multiplex instrument for physical habitat measurements in small riverine domains

Parasiewicz

Hofmann

Höglinger

1999

Regul. Rivers: Res. Mgmt.

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The measurement of physical habitat components in small rivers can be a complicated and resource‐intensive task. The characterisation of the complexity and dynamics of such domains requires manual collection of large amounts of data in the shortest possible time. The physical microhabitat variables that are usually measured for assessment/modelling purposes are channel geometry, water depth and velocity. Simultaneous collection of these variables, combined with automatic data logging can significantly reduce sampling time. In this paper, a depth velocity position (DVP) bar developed to achieve this task is described. The prototype of the instrument was built in 1996 and tested intensively in the summer and winter of that year, yielding encouraging results. This multiplex instrument consists of three probes simultaneously measuring depth plus mean column and near‐bottom velocities. In addition, a geodesic prism or global positioning by satellite (GPS) rover can be mounted on the top of the instrument for accurate position recording. Water depth is registered by pressure transducer and near‐bottom velocity by a one‐dimensional electromagnetic probe. The integrative mean column velocity is measured using a modified ‘dipstick’ (Jens, 1968, Dtsch. Gewässerkdl. Mitt., 12. Jahrgang, 4, 90–95). The torque that results from velocities influencing the dipstick is registered with an electronic tension stripe and translated to the mean column velocity. All of above variables are data logged every second for the period set by the operator. Copyright © 1999 John Wiley & Sons, Ltd.

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Estimation of Physical Habitat Characteristics Using Automation and Geodesic-Based Sampling

Cited by 10 publications

References 6 publications

The importance of physical habitat assessment for evaluating river health

The importance of physical habitat assessment for evaluating river health

Hydraulic‐habitat modelling for setting environmental river flow needs for salmonids

The DVP (Depth Velocity Position) bar—a multiplex instrument for physical habitat measurements in small riverine domains

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