André Frainer
A5034159665- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Soil and Water Nutrient Dynamics
- Isotope Analysis in Ecology
- Aquatic Invertebrate Ecology and Behavior
- Ecology and Vegetation Dynamics Studies
- Parasite Biology and Host Interactions
- Species Distribution and Climate Change
- Hydrology and Watershed Management Studies
- Hydrology and Sediment Transport Processes
- Land Use and Ecosystem Services
- Fish Biology and Ecology Studies
- Marine and coastal ecosystems
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- scientometrics and bibliometrics research
- Marine and fisheries research
- Marine Biology and Ecology Research
- Coastal and Marine Management
- Academic Publishing and Open Access
- Plant and animal studies
- Marine animal studies overview
- Animal Ecology and Behavior Studies
- Water Governance and Infrastructure
UiT The Arctic University of Norway
2016-2025
Norwegian Institute for Nature Research
2019-2025
Swedish University of Agricultural Sciences
2015-2023
The FRAM Centre
2019-2022
Umeå University
2009-2021
Universidade Federal do Rio Grande do Sul
2008-2014
ETH Zurich
2014
Swiss Federal Institute of Aquatic Science and Technology
2014
Museu de Ciências Naturais da Fundação Zoobotânica do Rio Grande do Sul
2009
Significance Arctic marine ecosystems are experiencing a rapid biogeographic change following the highest warming rates observed around globe in recent decades. Currently, there no studies of how shifts species composition affecting ecosystem functioning at scale. We address this issue via functional biogeography and show that increasing temperatures reduced ice coverage associated with borealization fish communities. find large body-sized piscivorous semipelagic boreal replacing...
Summary Plant leaf litter comprises the major common source of energy and nutrients in forested soil freshwater ecosystems world‐wide. However, despite similarity physical biochemical processes, generalizations across aquatic terrestrial regarding decomposition drivers remain elusive. We re‐analysed data from a published field experiment conducted two (forest floors streams) five biomes (from tropics to subarctic) with increasing decomposer community complexity (microbes, microbes mesofauna,...
An experiment in >1000 river and riparian sites found spatial patterns controls of carbon processing at the global scale.
Abstract Species are redistributing globally in response to climate warming, impacting ecosystem functions and services. In the Barents Sea, poleward expansion of boreal species a decreased abundance Arctic causing rapid borealization communities. This might have profound consequences on food web by creating novel feeding interactions between previously non co‐occurring species. An early identification new links is crucial predict their ecological impact. However, detection traditional...
Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity this may influence instream globally in ways that are not yet understood. We investigated latitudinal differences mixtures low high functional diversity 40 streams on 6 continents spanning 113° latitude. Despite important variability our dataset, we found the effect decomposition, which explained as evolutionary adaptations...
Summary Despite ample experimental evidence indicating that biodiversity might be an important driver of ecosystem processes, its role in the functioning real ecosystems remains unclear. In particular, understanding which aspects are most for functioning, their importance relative to other biotic and abiotic drivers, circumstances under is likely influence nature, limited. We conducted a field study focussed on guild insect detritivores streams, we quantified variation process leaf...
How are resource consumption and growth rates of litter‐consuming detritivores affected by imbalances between consumer litter C:N:P ratios? To address this question, we offered leaf as food to three aquatic detritivore species, which represent a gradient increasing body N:P ratios: crustacean, caddisfly stonefly. The were placed in microcosms submerged natural stream. Four contrasting species offered, both singly two‐species mixtures, obtain different levels stoichiometric imbalance the...
Abstract Habitat restoration is increasingly undertaken in degraded streams and rivers to help improve biodiversity ecosystem functioning. Follow‐up assessments focused on outcomes for have often found scant evidence recovery, raising concerns about the efficacy of habitat improving ecological integrity. However, responses other variables, such as process rates functional trait composition biological assemblages, been little evaluated. We assessed how heterogeneity affected multiple...
Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by traits. Litter-trait variation may determine the latitudinal gradient which mainly microbial tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of green leaves to...
Multiple stressors are increasingly affecting organisms and communities, thereby modifying ecosystems state functioning. Raising awareness about the threat from multiple has increased number of experimental observational studies specifically addressing consequences stressor interactions on biota. Most measure direct effects their biological endpoints such as abundance, biomass, or diversity target organism groups. This yields invaluable information for management restoration stressed...
Rivers and streams contribute to global carbon cycling by decomposing immense quantities of terrestrial plant matter. However, decomposition rates are highly variable large-scale patterns drivers this process remain poorly understood. Using a cellulose-based assay reflect the primary constituent detritus, we generated predictive model (81% variance explained) for cellulose across 514 globally distributed streams. A large number variables were important predicting decomposition, highlighting...
Biodiversity and ecosystem-functioning theory suggest that litter mixtures composed of dissimilar leaf species can enhance decomposition due to trait complementarity. Here we created a continuous gradient chemistry variability within assess effects dissimilarity on three related processes in natural stream: decomposition, fungal biomass accrual the litter, nitrogen phosphorus immobilization. Litter from pool eight was analyzed for traits affecting (lignin, nitrogen, phosphorus) assembled all...
Alongside climate change, the current rapid loss of biodiversity is one biggest threats that humanity faces to its own survival (1). With up a million species at risk disappearing within decades, human activities are reshaping life on Earth with no precedent in recent history. Biodiversity encompasses all forms and their variation across landscape. As most important measures environmental quality, high often linked better provision ecosystem services (2) also helps assist promote ecological...
As temperatures rise, motile species start to redistribute more suitable areas, potentially affecting the persistence of several resident and altering biodiversity ecosystem functions. In Barents Sea, a hotspot for global warming, marine fish from boreal regions have been increasingly found in exclusive Arctic region. Here, we show that this shift distribution is increasing richness evenness, even so, functional diversity Arctic. Higher often interpreted as being positive health target...
Graphical Abstract
ABSTRACT Decomposition of plant litter is a key ecological process in streams, whose contribution to the global carbon cycle large relative their extent on Earth. We examined mechanisms underlying temperature sensitivity (TS) instream decomposition and forecast effects climate warming this process. Comparing data from 41 globally distributed sites, we assessed TS microbial total using nine species combined six mixtures. Microbial conformed metabolic theory ecology its was consistently higher...
Abstract Marine mammals are important players in the Barents Sea ecosystem but their structural role foodweb has been little explored. We compare foodweb-related characteristics within and between phylogenetic groups for 19 marine mammals. As a group, they directly connect to most central species (i.e cod haddock) (i.e. consume over half of available species. Pinnipeds homogenous group with high omnivory prey richness. Mysticetes split well-connected like humpback whale, peripheral...
Abstract Microbes play a critical role in plant litter decomposition and influence the fate of carbon rivers riparian zones. When decomposing low‐nutrient litter, microbes acquire nitrogen (N) phosphorus (P) from environment (i.e., nutrient immobilization), this process is potentially sensitive to loading changing climate. Nonetheless, environmental controls on immobilization are poorly understood because rates also influenced by chemistry, which coupled same factors. Here we used...
Abstract There is a growing recognition that functional measures of diversity, based on quantification functionally important species traits, are useful for explaining variation in ecosystem processes. However, the mechanisms linking diversity to different processes remain poorly understood, hindering development predictive framework functioning traits. The current understanding how traits aquatic plants (macrophytes) affect nitrogen (N) cycling by regulating microbial communities and their...
Abstract The microbial control agent Bacillus thuringiensis var. israelensis (Bti) has been successfully used worldwide to reduce abundances of biting Nematocera (Diptera), often with little direct impact on non-target organisms observed. However, the potential for additional indirect effects other ecosystem properties, including trophic linkages within food webs, is poorly known. We investigated multiple-year mosquito treatments using Bti product VectoBac ® -G stable isotope composition...