A5042658873- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Species Distribution and Climate Change
- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Soil and Water Nutrient Dynamics
- Isotope Analysis in Ecology
- Water Resources and Management
- Marine and coastal ecosystems
- Environmental DNA in Biodiversity Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Identification and Quantification in Food
- Marine Biology and Ecology Research
- Fish biology, ecology, and behavior
- Ecosystem dynamics and resilience
- Geology and Paleoclimatology Research
- Transboundary Water Resource Management
- French Urban and Social Studies
- Educational Strategies and Epistemologies
- Avian ecology and behavior
- Education and Critical Thinking Development
- Wildlife Ecology and Conservation
- Ecology and biodiversity studies
- Invertebrate Taxonomy and Ecology
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2016-2024
Drexel University
2012-2024
Federal Agency for Nature Conservation
2023
Forschungsverbund Berlin
2021
Institut de Neurobiologie de la Méditerranée
2010
Centre National de la Recherche Scientifique
2005-2010
Cezanne (Italy)
2008
Institut Méditerranéen de Biodiversité et d'Ecologie Marine et Continentale
2007-2008
Global freshwater biodiversity is declining dramatically, and meeting the challenges of this crisis requires bold goals mobilisation substantial resources. While reasons are varied, investments in both research conservation lag far behind those terrestrial marine realms. Inspired by a global consultation, we identify 15 pressing priority needs, grouped into five areas, an effort to support informed stewardship biodiversity. The proposed agenda aims advance globally as critical step improving...
Abstract A recent global meta‐analysis reported a decrease in terrestrial but increase freshwater insect abundance and biomass (van Klink et al., Science 368, p. 417). The authors suggested that water quality has been improving, thereby challenging reports documenting drastic declines biodiversity. We raise two major concerns with the suggest these account for discrepancy elsewhere. First, total alone are poor indicators of status assemblages, observed differences may well have driven by...
Global freshwater biodiversity is declining dramatically, and meeting the challenges of this crisis requires bold goals mobilization substantial resources. While reasons are varied, investments in both research conservation lag far behind those terrestrial marine realms. Inspired by a global consultation, we identify 15 pressing priority needs, grouped into five areas, an effort to support informed stewardship. The proposed agenda aims advance globally as critical step improving coordinated...
Abstract Motivation Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment ecosystem health, well test ecological hypotheses. Despite their importance, a comprehensive, global database aquatic insect occurrences for mapping biodiversity in macroecological studies applied research is missing. We aim fill this gap present the Global EPTO Database , which includes worldwide geo‐referenced occurrence records four major...
Abstract We examined how communities of macroinvertebrates occurring in functional process zones (FPZs) are affected by the location FPZs river continuum. delineated for three rivers displaying significant disparities elevation, annual precipitation, valley shape, and other valley‐scale hydrogeomorphic variables. extracted corresponding macroinvertebrate community data from US National Water Quality Monitoring Council database matched it to stream order (SO) FPZ delineations. structure...
The effects of nutrient enrichment stream water on epilithic chironomid larval assemblages were examined during spring in a Mediterranean catchment. Three reaches that differed degree selected for comparison. Water chemistry, epilithon biomass (as ash-free dry mass [AFDM]), algal chlorophyll [chl a]), biovolumes, and composition analyzed to determine their association with density taxonomic chironomids. Kendall's τ coefficient rank correlations canonical correlation analysis used evaluate...
Opportunities to understand and protect natural aquatic diversity in both relatively pristine managed rivers can be enhanced with a comprehensive, system-wide understanding of river’s hydrogeomorpholgy its effects on ecological structure functioning from the headwaters terminus an ocean, lake, or endorheic basin. While moderate number macrosystem ecology studies have been undertaken recently headwaters, comparable approaches studying whole at least their larger components upstream downstream...
Abstract River hydrogeomorphology is a major driver shaping biodiversity and community composition. Here, we examine how hydrogeomorphic heterogeneity expressed by Functional Process Zones (FPZs) in river networks associated with fish assemblage variation. We examined this association two distinct ecoregions Mongolia expected to display different gradients of network heterogeneity. delineated FPZs extracting valley‐scale variables at 10 km sample intervals forest steppe (FS) grassland (G)...
Mongolia's riverine landscape is divided into three watersheds, differing in extent of permafrost, amount precipitation and hydrological connectivity between sub-drainages. In order to assess the vulnerability macroinvertebrate communities ongoing climate change, we consider taxonomic functional structures stream two major watersheds: The Central Asian Internal Watershed (CAIW) Arctic Ocean (AOW), together covering 86.1% surface area. We consequences sub-drainages on nestedness distinctness...
Abstract We analyze here the nature of research in freshwater macrosystem biology (especially lotic studies) from both conceptual and current perspectives. The boundaries permanent transitional macrosystems smallest to largest spatial extents are described. contrast ecosystem vs. macroecology ecology provide some examples representative aquatic projects USA. recommend approaches for incorporating certain large‐scale concepts developed over last 40 yr as bases studies. Of these, three most...
OPINION article Front. Environ. Sci., 10 May 2019Sec. Freshwater Science Volume 7 - 2019 | https://doi.org/10.3389/fenvs.2019.00065
Water enrichment has been described to have major impact on the freshwater food-webs structure. We investigated structure of epilithic algal assemblage and gut contents a rheophilic orthoclad in situ nutrient enriched stream. 4-th instar larvae Eukiefferiella claripennis, widespread Palearctic ecozone abundant nutrient-enriched streams, were chosen be studied due their great densities such environment. The taxonomic composition assemblage, ingested algal-cell biovolumes used establish...
We assessed the potential influence of hydrological connectivity among subdrainages on structural and functional organization stream macroinvertebrate metacommunities in 2 adjacent, large Asian watersheds (~1.4 million km2). To examine metacommunities, we used multisite β-diversity partitioning applied Elements Metacommunity Structure (EMS) framework to resolve aspects taxon associations metacommunity assembly. also decomposed β diversity into nestedness turnover assess contrasting...
The dissolved oxygen diel cycle is an inherent feature of stream ecosystems, and the amplitude in this fluctuation thought to strongly influence composition communities. For instance, extremely low saturation (DDO) values have well-documented effects on macroinvertebrates. Less known, however, about subtler differences assemblages. In study, we examined if variation DDO streams associated with changes taxonomic trait macroinvertebrate We assemblages 3 drainages Great Basin USA covering a...
The metacommunity concept has received increasing interest in the past two decades. However, there been limited research examining structure of communities high mountain streams. These ecosystems are often physically constrained and can display large environmental gradients within a relatively small spatial extent. Here, we examined structures stream organisms region, which is part Hengduan Mountains region Southwest China. Macroinvertebrates diatoms were collected from six streams opposite...
Abstract Stream fishes are restricted to specific environments with appropriate habitats for feeding and reproduction. Interactions between streams surrounding landscapes influence the availability type of fish habitat, nutrient concentrations, suspended solids, substrate composition. Valley width gradient geomorphological variables that frequency intensity a stream interacts landscape. For example, in constrained valleys, canyon walls steeply sloped valleys narrow, limiting movement water...
Freshwater biodiversity is declining dramatically, and the current crisis requires defining bold goals mobilizing substantial resources to meet challenges. While reasons are varied, both research conservation of freshwater lag far behind efforts in terrestrial marine realms. We identify fifteen pressing global needs support informed stewardship. The proposed agenda aims advance globally as a critical step improving coordinated action towards its sustainable management conservation.
The decline of wet-grassland breeding bird populations across Europe, and Germany more specifically, continues unabated. In an effort to address this ongoing issue, we conducted a Horizon Scanning survey identify the current strengths, weaknesses, future opportunities, threats for conservation both continental Atlantic biogeographic regions in Germany. We 2022 targeted primarily community practitioners. structured with nine simple questions profile participants collect their expert opinions....