A5062157471- Hydrology and Sediment Transport Processes
- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Soil and Water Nutrient Dynamics
- Forest Ecology and Biodiversity Studies
- Species Distribution and Climate Change
- Aquatic Invertebrate Ecology and Behavior
- Wildlife Ecology and Conservation
- Ecology and Vegetation Dynamics Studies
- Peatlands and Wetlands Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Remote Sensing and LiDAR Applications
- Advanced Statistical Modeling Techniques
- Genetic diversity and population structure
- Botany and Plant Ecology Studies
- Environmental DNA in Biodiversity Studies
- Land Use and Ecosystem Services
- Radioactive contamination and transfer
- Economic and Environmental Valuation
- Hydrological Forecasting Using AI
- Geological Modeling and Analysis
- Ecology and biodiversity studies
- Soil Geostatistics and Mapping
University of Duisburg-Essen
2007-2023
Faculty (United Kingdom)
2023
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2010-2015
Leibniz Institute for Neurobiology
2012
University of Bonn
2000
1 Wood is increasingly used in restoration projects to improve the hydromorphological and ecological status of streams rivers. However, despite their growing importance, only a few these are described open literature. To aid practitioners, we conducted postal mail survey summarize experiences gained central Europe compile data on 50 projects. 2 Our results indicated potential for improvement from an point view, as number total wood volume, median volume single structures placed per project,...
Despite the large number of river restoration projects carried out worldwide, evidence for strong and long-term positive ecological effects hydromorphological on macroinvertebrates is scarce. To improve understanding success failure measures, a standardized field study was in nineteen paired restored degraded sections mid-sized lowland mountain rivers throughout Europe. We investigated if there were macroinvertebrate biodiversity, these could be related to changes microhabitat composition,...
Summary Restoration of river hydromorphology often has limited detected effects on biota. One frequently discussed reason is that the restored length insufficient to allow populations develop and give room for geomorphological processes occur. We investigated ten pairs sections which one was a large project involving long, intensively section represented smaller restoration effort. The effect quantified by comparing each an upstream non‐restored section. sampled following response variables:...
This introductory paper presents 20 river restoration cases throughout Europe that were investigated in the EU-funded research project REFORM. In following, this special issue provides seven specific papers highlight and discuss effects of on river–floodplain systems. Additionally, success was estimated from a socio-economic perspective. The first part overall study concept general sampling design field investigations. Each site examined with same array methods, covering habitat composition...
It is commonly assumed that the colonization of restored river reaches by fish depends on regional species pools; however, quantifications relationship between composition pool and restoration outcome are lacking. We analyzed data from 18 German projects adjacent constituting pools reaches. found ability statistical models to describe assemblages established in was greater when these were based 'biotic' variables relating ecological traits rather than 'abiotic' hydromorphological habitat...
Abstract Agriculture, the world’s most dominant land use type, burdens freshwater biodiversity with a multitude of stressors such as diffuse pollution and hydromorphological alteration. However, it is difficult to directly link agricultural biota response can also originate from other causes. Also, there evidence for positive negative effects agriculture on organisms, impact differs strongly biological metric study region considered among practice which in turn affects different organism...
Abstract Riparian zones are the paragon of transitional ecosystems, providing critical habitat and ecosystem services that especially threatened by global change. Following consultation with experts, 10 key challenges were identified to be addressed for riparian vegetation science management improvement: (1) Create a distinct scientific community establishing stronger bridges between disciplines; (2) Make more visible appreciated in society policies; (3) Improve knowledge regarding...
Abstract Woody riparian vegetation (WRV) benefits benthic macroinvertebrates in running waters. However, while some functions are provided by WRV irrespective of surrounding and catchment land use, others context‐specific. In recent large‐scale studies, effects on were therefore small compared to raising the question about relevance for restoration. Model‐based recursive partitioning was used identify context‐dependent macroinvertebrates' ecological status (catchment area 10–100 km 2 )...
Summary 1. Using an extensive data set from 18 river restoration projects in the lower mountain ranges of Germany and 5462 reaches their surroundings, we estimated spatial extent regional fish species pool which restored are colonised. 2. Restoration resulted a marginally significant increase richness; however, still deviated markedly natural reference conditions. Nearly all (96.6%) occurring were present within distance 5 km up‐ or downstream reach. 3. Species richness was correlated with...
Abstract Global change has the potential to affect river flow conditions which are fundamental determinants of physical habitats. Predictions effects alterations on aquatic biota have mostly been assessed based species ecological traits (e.g., current preferences), difficult link quantitative discharge data. Alternatively, we used empirically derived predictive relationships for species’ response assess effect due climate in two contrasting central European catchments. Predictive were set up...
The species composition of a community is driven by the dispersal capacity forming that and their ecological niche. While niches EPTs (Ephemeroptera, Plecoptera Trichoptera) are well-studied due to wide use as indicators for status freshwater ecosystems, has not yet been accurately characterized. Dispersion merolimnic EPT during terrestrial aerial adult stage special importance because distance dispersed active flight or passive wind drift usually much larger compared dispersion aquatic...
Summarized here are ten investigations concerning the volume of coarse woody debris (CWD) in Central European streams. Altogether, 69 stream sections were examined ranging from Northern German lowland streams to brooks alpine regions. Most study according standards quasi-natural and bordered by deciduous forest. The geometric mean CWD related length is 1.44 m3 /100 meter reach. Related bottom area, 0.202 m2 . number logs (≥10 cm diameter) 12.5 logs/100 reach, 3.01/100 area (geometric means)....
Agriculture has been identified as a main cause for more than 90% of Germany´s rivers still not meeting good ecological status in 2021. While many large-scale studies observed negative effect catchment agricultural land use on river biota, they rarely considered differences cultivation intensities, although small-scale highlight clear between the effects crops. Here we used Germany-wide and spatially explicit information crop types to calculate intensity indices nutrients pesticides,...
While the general effects of agricultural land use on riverine biota are well documented, differential specific crop types different organism groups, remained largely unexplored. Here we used recently published data distinguishing between and a Germany-wide dataset 7748 sites ecological status macroinvertebrates, macrophytes diatoms applied generalized linear mixed models to unravel associations types, status. For all with were stronger than those urban use. macroinvertebrates macrophytes,...