Distribution patterns of terrestrial and aquatic invertebrates influenced by different groyne forms along the River Elbe (Germany).

Kleinwächter, Meike; Eggers, T.; Henning, Martin; Anlauf, Andreas; Hentschel, Bernd; Larink, O.

doi:10.1127/lr/15/2003/319

Cited by 11 publications

(15 citation statements)

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“…For the riparian ground beetle B. velox, the key factors ''sand content'' and ''vegetation cover'' determine whether a habitat is suitable for reproduction and population development or not. Along the River Elbe, sandy open soil habitats are found in groyne field areas where stronger currents predominate, leading to deposition of coarser substrate (Wirtz and Ergenzinger 2002;Kleinwä chter et al 2005). These river bank areas are important alternative habitats for the lost sand banks of the River Elbe (Brä unicke and Trautner 1999) not only for carabids but also for rove beetles (Kunze and Kache 1998) and pioneer vegetation (Sander 1996).…”

Section: Application In Conservationmentioning

confidence: 98%

“…As previous studies have shown, the distribution of B. velox can clearly indicate differences in hydro-morphological processes caused by the condition and the type of groynes (Bonn and Ziesche 2000;Kleinwä chter et al 2005). To determine the manner in which river banks to support the sensitive and specialised riparian fauna, (1) we use habitat suitability models to identify the most important habitat factors governing the distribution of B. velox.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, suitable measures are required to increase the hydro-morphological dynamics and improve the ecological condition of the river banks (IKSE 1994), e.g. modifications of the groyne form (Kleinwä chter et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Habitat models for a riparian carabid beetle: their validity and applicability in the evaluation of river bank management

Kleinwächter

Rickfelder

2007

Biodivers Conserv

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In order to assess the management success of river rehabilitation measurements it is necessary to have representative target species and objective statistical methods. In this study we, tested the validity of habitat suitability models for the riparian carabid beetle Bembidion velox in the evaluation of river bank management along the River Elbe, Germany. On the basis of seven independent data sets from different sites and years we have proven the robustness of logistic regression models with respect to their explanatory and predictive power and their applicability in the field. All models had robust explanatory power and described a strong association of B. velox with semi-terrestrial sandy open soil habitats. Transfers of model results for adult beetles to their larvae and vice versa were highly significant with ''sand content'' and ''stem distance'' as the main habitat factors for both life stages. To broaden the local explanatory power towards general predictions we performed model cross-validation in space and time. Spatial transfers produced models with excellent discrimination properties, measured by Area Under Curve (AUC) values of Receiver Operating Characteristics (ROC) plots, independent of sampling designs and trapping methodology. However, the applicability of habitat models for B. velox is defined by the validity period, as the availability of suitable habitats for this species is highly temporally variable and dependent on water level. Model transfers between species also demonstrated that the chosen target species is representative for carabids with similar distribution patterns, as the single species model had high predictive power for the occurrence of a multi-species carabid group.

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Section: Application In Conservationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Habitat models for a riparian carabid beetle: their validity and applicability in the evaluation of river bank management

Kleinwächter

Rickfelder

2007

Biodivers Conserv

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“…This guild includes predatory arthropods like spiders and carabid beetles (e.g., Polis and Hurd 1996;Kleinwächtler et al 2005;, insectivorous birds and bats (Gray 1993), scavenging invertebrates like dipterans, isopods, and grasshoppers (e.g., Backlund 1945;Behbehani and Croker 1982;McLachlan 1983McLachlan , 1985Bastow et al 2002), predatory and scavenging mammals (Moore 2002;Carlton and Hodder 2003), and others. This subject will be discussed in more detail in the section on accumulation and processing of organic matter.…”

Section: Support Of Biodiversitymentioning

confidence: 99%

“…Marine ecologists have made suggestions about which design features of engineered structures will affect their ecological value (Table 1), as well as principles that might be used to manage shore zones taking ecological services into account (Table 2). There have been a few attempts to assess the ecological value of different kinds of structures in freshwater shore zones as well (Fladung 2002;Scholten 2002;Chovanec et al 2005;Kleinwächtler et al 2005;Scholten et al 2005). …”

Section: Climate Changementioning

confidence: 99%

Ecology of freshwater shore zones

2010

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Freshwater shore zones are among the most ecologically valuable parts of the planet, but have been heavily damaged by human activities. Because the management and rehabilitation of freshwater shore zones could be improved by better use of ecological knowledge, we summarize here what is known about their ecological functioning. Shore zones are complexes of habitats that support high biodiversity, which is enhanced by high physical complexity and connectivity. Shore zones dissipate large amounts of physical energy, can receive and process extraordinarily high inputs of autochthonous and allochthonous organic matter, and are sites of intensive nutrient cycling. Interactions between organic matter inputs (including wood), physical energy, and the biota are especially important. In general, the ecological character of shore zone ecosystems is set by inputs of physical energy, geologic (or anthropogenic) structure, the hydrologic regime, nutrient inputs, the biota, and climate. Humans have affected freshwater shore zones by laterally compressing and stabilizing the shore zone, changing hydrologic regimes, shortening and simplifying shorelines, hardening shorelines, tidying shore zones, increasing inputs of physical energy that impinge on shore zones, pollution, recreational activities, resource extraction, introducing alien species, changing climate, and intensive development in the shore zone. Systems to guide management and restoration by quantifying ecological services provided by shore zones and balancing multiple (and sometimes conflicting) values are relatively recent and imperfect. We close by identifying leading challenges for shore zone ecology and management.

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Sedimentation and flow patterns induced by regular and modified groynes on the River Elbe, Germany

Henning

Hentschel

2013

Ecohydrology

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Groynes help to protect river banks and support water levels for navigation. Since recently, groyne fields are considered as surrogate habitat for various species and may, in terms of ecology, partially replace flood plains that were lost in the course of river training in the last centuries. In order to maintain and improve the hydraulic function and ecological value of groyne fields, the German Federal Institutes of Hydrology and the Waterways Engineering and Research studied innovative groyne types and regular groynes on the River Elbe, Germany. In a 10-year field campaign, groyne field hydraulics and morphology were monitored using acoustic Doppler current profiler and echo-sounding techniques. The data is used to assess groyne field heterogeneity and morphodynamics over the 10-year period as well as flow patterns at different flow stages. The results indicate a high morphological activity in the groyne fields associated with flood discharges. Significant sedimentation in the bank regions was observed, whereas sedimentation in deeper areas of the groyne fields was less pronounced. The sedimentation patterns and rates in the groyne fields are, to some extent, found to be influenced by different groyne types and associated flow patterns.

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Distribution patterns of terrestrial and aquatic invertebrates influenced by different groyne forms along the River Elbe (Germany).

Cited by 11 publications

References 0 publications

Habitat models for a riparian carabid beetle: their validity and applicability in the evaluation of river bank management

Habitat models for a riparian carabid beetle: their validity and applicability in the evaluation of river bank management

Ecology of freshwater shore zones

Sedimentation and flow patterns induced by regular and modified groynes on the River Elbe, Germany

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