The modular habitat model (MHM) for the ide,<i>Leuciscus idus</i>(L.) - a new method to predict the suitability of inshore habitats for fish

Scholten, Matthias; Wirtz, C.; Fladung, Erik; Thiel, Ralf

doi:10.1046/j.1439-0426.2003.00507.x

Cited by 9 publications

(12 citation statements)

References 51 publications

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“…In the late 1990s, HSIs derived using multiple regression began to appear: generalised linear models (GLMs) (logistic regression for presence/absence data, other distributions such as Poisson for count data) (Guay et al. 2000; Parasiewicz & Dunbar 2001; Scholten et al. 2003; Ahmadi‐Nedushan et al.…”

Section: Habitat Modelsmentioning

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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Section: Habitat Modelsmentioning

confidence: 99%

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

Dunbar

Alfredsen

Harby

2011

Fisheries Management Eco

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“…Special small‐scale research surveys relating occurrences and densities of fish species and their life stages together with habitat parameters would allow the development of mathematical habitat models (e.g. Scholten et al., 2003). Habitat models allow the prediction of fish faunal compositions, even under conditions of climate change and other changes in aquatic environments, if the habitat preferences of the species and the most important environmental parameters of the habitats are known.…”

Section: Discussionmentioning

confidence: 99%

The Zoological Museum Hamburg (ZMH) fish collection as a global biodiversity archive for elasmobranchs and actinopterygians as well as other fish taxa

Thiel

Eidus

Neumann

2009

Journal of Applied Ichthyology

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Based on the analysis of the Zoological Museum Hamburg (ZMH) fish collection database, a current status report of the ZMH fish collection is provided with a focus on Elasmobranchii and Actinopterygii. Therein, development of the collection, systematic and geographic coverage of the collection material, and the volume and structure of the ZMH type collection are presented and analysed. The majority of the specimens in the ZMH fish collection is preserved in 70% ethanol and arranged in phylogenetic order. The basis of the collection originates from the former Natural History Museum in Hamburg. Initially low in numbers, in 1850 amounting to only 119 lots, the fish collection increased markedly during the second half of the 19th century. By the end of 1875 the number of registered lots was 550, surpassing the 4400 mark in 1900. Expeditions exploring unknown habitats and territories were the main source of material during the first half of the 20th century. The first two decades of the 20th century marked a period of relatively rapid expansion in the number of fish species and specimens collected at the ZMH, with about 11.1% of the material indexed in the collection database originating from 1901 to 1920. Much of the additional expansion derived from the 1993 takeover of 23 860 marine fish lots from the former ISH (Institut fu¨r Seefischerei, Hamburg) collection, the main reason for which about 74.6% of all actual catalogued lots were stored in the ZMH fish collection during the 1951-2000 period. In February 2008, the number of catalogued entries reached 45 640, with about 257 967 specimens. Some 8100 nominal species in 60 orders and 378 families are represented in the ZMH fish collection. The collection maintains worldwide coverage, with large numbers of lots originating from the Atlantic Ocean, Pacific Ocean, Indian Ocean, Caribbean Sea, from Asia, Africa, Europe, South America and Middle America. Actinopterygii and Elasmobranchii together comprise more than 93% of the known orders, more than 98% of the families and more than 99% of the lots and individuals represented in the collection database. The collection contains about 1321 type series (lots) and 3656 type specimens; 41.8% of the type lots are primary types. Actinopterygians contribute 90.6% to the type series and 94.6% to the type specimens. Elasmobranchs are represented with 8.1% of the type series and 4.7% of the type specimens in the ZMH fish collection. Sharks are represented with 27 type series (25.2%), whereas the contribution of batiods amounts to 80 type series (74.8%). Comprising 69.2% of all elasmobranch types, the family Rajidae is the most important group of batoid fishes represented. The family Scyliorhinidae with 14.0% of all elasmobranch types is the best-represented shark family in the ZMH type collection.Further development and future research of the ZMH Ichthyology Group is discussed and is to include modern taxonomic and biogeographic approaches important in present global biodiversity research, thereby rendering the ZMH fish collection as...

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“…Electrofishing is used by wading or from a boat along the shoreline (nursery areas) or in middle of the channel in the case of small streams. Sampling is continual in measured stretches of the river and covers all available types of shoreline (stony bank, gravel beach, and vegetated bank) due to the different habitat preferences of Konečná et al, 2009) particular YOY fish species (Keckeis et al, 1997;Bischoff & Freyhoff, 1999;Jurajda, 1999;Scholten et al, 2003). The total length of sampled stretch is about 100 m (sum of different habitats) and the width is the active radius of the electrofisher anode (anode is located one behind another).…”

Section: Methodological Approach and Output Data Established In Czechmentioning

confidence: 99%

Young-of-the-year fish assemblages as an alternative to adult fish monitoring for ecological quality evaluation of running waters

et al. 2010

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The EU's Water Framework Directive (WFD) in particular makes good use of riverine biota-including fish-as ecological indicators of river integrity. However, it is also important to examine when our indicators fail to serve the purpose for which they were originally intended: to consistently and reliably describe the quality of the environment. We argue that in the Czech Republic (and probably several other European countries), the use of adult fish as ecological indicators often fails to fulfill these purposes for several reasons, especially when fish are stocked in natural waters, for practical considerations during field sampling, and problems with public relations. The ecological quality of running waters sensu WFD is usually assessed on the basis of the adult fish assemblage. The aim of this study is to describe disadvantages of monitoring river integrity using adult fish in Czech Republic, which has regular and widespread stocking of more than one-third of fish species present in running waters and to suggest the alternative strategy of young-of-theyear (YOY) fish monitoring for assessing river ecological quality with the ability to provide a sensitive response to water quality and habitat structure regardless of the effect of stocking or river size. We conclude that even though YOY sampling is often a more logical and practical approach to water quality monitoring under specific conditions, no method is perfect and caution should be taken. For example, YOY can have high annual variability in density and higher sensitivity to summer flood events than adults. The suitable time for sampling YOY fishes in late summer is much shorter than for the adult fish community, and therefore must be considered when designing a successful monitoring strategy. Monitoring of YOY fishes does not provide direct information about age structure of fish populations, which is required by WFD. YOY sampling is a useful-albeit imperfect-method for providing a sensitive response to ecological status of rivers, especially under specific stocking conditions.

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The modular habitat model (MHM) for the ide,Leuciscus idus(L.) - a new method to predict the suitability of inshore habitats for fish

Cited by 9 publications

References 51 publications

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

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

The Zoological Museum Hamburg (ZMH) fish collection as a global biodiversity archive for elasmobranchs and actinopterygians as well as other fish taxa

Young-of-the-year fish assemblages as an alternative to adult fish monitoring for ecological quality evaluation of running waters

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