A5010736612- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Aquatic Invertebrate Ecology and Behavior
- Soil and Water Nutrient Dynamics
- Hydrology and Sediment Transport Processes
- Forest Ecology and Biodiversity Studies
- Hydrology and Watershed Management Studies
- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Mycorrhizal Fungi and Plant Interactions
- Research in Social Sciences
- Diatoms and Algae Research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Species Distribution and Climate Change
- Environmental Toxicology and Ecotoxicology
- Peatlands and Wetlands Ecology
- Ecology and biodiversity studies
- Lichen and fungal ecology
- Water Quality Monitoring and Analysis
- Coastal wetland ecosystem dynamics
- Environmental Conservation and Management
- Parasite Biology and Host Interactions
- Aquaculture disease management and microbiota
- Plant Pathogens and Fungal Diseases
- Ecology and Vegetation Dynamics Studies
Finnish Environment Institute
2016-2025
University of Oulu
2009-2022
University of Jyväskylä
2003-2007
ABSTRACT Aim We examined the relative contributions of spatial gradients and local environmental conditions to macroinvertebrate assemblages boreal headwater streams at three hierarchical extents: bioregion, ecoregion drainage system. also aimed identify variables most strongly related assemblage structure each study scale, assess how importance these is regional context structuring different scales. Location Northern Finland ( 62 – 68° N, 25–32° E). Methods Variation in data was partitioned...
The primary focus of many in-stream restoration projects is to enhance habitat diversity for salmonid fishes, yet the lack properly designed monitoring studies, particularly ones with pre-restoration data, limits any attempts assess whether has succeeded in improving habitat. Even less known about impacts fisheries-related on other, non-target biota. We examined how aiming at enhancement juvenile brown trout (Salmo trutta L.) affects benthic macroinvertebrates, using two separate data sets:...
Abstract Aim Freshwater biodiversity is declining world‐wide as a result of human‐caused degradation freshwater ecosystems. Declines in species richness are well documented for many taxonomic groups, but less known about how and why composition beta diversity (β) change response to environmental environments. Location The Mid‐ A tlantic Highlands region the USA (36–42° N , 74–82° E ) F inland northern urope (60–68° 20–32° ). Methods We used null models, occupancy analyses, ordinations...
Abstract Metacommunity studies commonly use spatial distances or, more recently, landscape resistance measures between study sites as a surrogate for connectivity. However, local communities are connected to many other sources of colonisation than the included in study, and availability distance potential may be better surrogates dispersal sampling sites. Here we test effect habitat connectivity on assembly stream‐riffle macroinvertebrates with different abilities, after controlling...
Abstract Aim Metacommunity assembly mechanisms have been traditionally considered stable through time. However, in highly dynamic systems with varying local environmental conditions and patch connectivity, communities are likely to experience temporal shifts their mechanisms. Here, we used a set of perennial ( PR ) intermittent IR rivers assess if vary seasonally response flow intermittence. Location Mediterranean climate region (100,000 km 2 ), Spain. Methods We modelling approach the...
Summary 1. Many studies have shown traditional species diversity indices to perform poorly in discriminating anthropogenic influences on biodiversity. By contrast, marine systems, taxonomic distinctness that take into account the relatedness of been discriminate effects. However, few examined performance freshwater systems. 2. We studied four and for detecting effects stream macroinvertebrate assemblages. Further, we catchment type area, as well two variables (pH total phosphorus)...
Abstract 1. Current views in ecology emphasise that community structure is the sum of multiple processes, with imprints both regional and local drivers. However, degree to which stream insect assemblages are structured by spatial configuration (complying dispersal‐based neutral hypothesis) environmental features niche‐based species sorting has not been rigorously examined based on surveys years. 2. Stream sites a boreal drainage system were surveyed during three consecutive years relative...
We examined the community‐environment relationships of lotic macroinvertebrates in near‐pristine headwater streams, and correlation between patterns taxonomic functional structure at two regional extents. The across‐ecoregion scale comprised five ecoregions spanning all Finland, while within‐ecoregion north boreal middle ecoregions. expected that should exhibit stronger than to spatial gradients, reverse be true for local environmental factors. found some support this notion, because...
We used data from 235 boreal headwater streams in Finland to examine whether macroinvertebrate assemblages constitute clearly definable types, and how well biologically defined assemblage types can be predicted using environmental variables. Two-way indicator species analysis produced 10 which differed significantly each other (multiresponse permutation procedure, MRPP). However, based on MRPP nonmetric multidimensional scaling, there was wide variation among sites within type, high degrees...
Biological assemblages are often subjected to multiple stressors emerging from both anthropogenic activities and naturally stressful conditions, species' responses simultaneous may differ those predicted based on the individual effects of each stressor alone. We studied influence land‐use disturbance (forest drainage) fungal decomposer leaf decomposition rates in harsh (low pH caused by black‐shale dominated geology) vs. circumneutral streams. used pyrosequencing determine richness...
Abstract Aim The perspective that microbial communities are controlled solely by environmental factors (‘everything is everywhere, but the environment selects’) has persisted for a long time, notwithstanding recent studies have found both and spatial processes important. We examined variation in structure of fungal bacterial boreal streams along large local gradients (e.g. stream size, acidity nutrients) at intermediate extent. Owing to extent our study area high dispersal rates microbes, we...
ABSTRACT Drying river networks include non‐perennial reaches that cease to flow or dry, and drying is becoming more prevalent with ongoing climate change. Biodiversity responses have been explored mostly at local scales in a few regions, such as Europe North America, limiting our ability predict future global scenarios of freshwater biodiversity. Locally, acts strong environmental filter selects for species adaptations promoting resistance resilience desiccation, thus reducing aquatic...
There is an urgent need for planning actions to mitigate biodiversity loss worldwide, which involves developing assessment methods help decision-makers identifying areas most at risk and prioritizing action.  This requires robust data analyses but it also implies thinking about realistic cost-effective measures. Fresh waters host important part of global freshwater organisms are expected be profoundly impacted by the predicted increase in water temperatures discharge alterations...
Abstract. Climate and land use changes, as well human water flow alteration, are causing worldwide shifts in river dynamics. During the last decades, low flows, intermittence, drying have increased many regions of world, including Europe. This trend is projected to continue amplify future, resulting more frequent intense hydrological droughts. However, due a lack data studies on temporary rivers past, little known about processes governing development intermittence drying, their timing...
ABSTRACT Aims The nested subset pattern has been widely studied in the last 20 years, and recent syntheses have challenged prevalence of this nature. We examined degree nestedness, its temporal variability environmental correlates stream insects a boreal drainage system. also differences between idiosyncratic species site occupancy, niche position breadth. Location Koutajoki basin northern Finland. Methods used (i) nestedness analyses with three null models for testing significance...
Summary There is compelling evidence that anthropogenic disturbance can decrease biodiversity and impair ecological functioning. A major challenge to biodiversity–ecosystem function research disentangle the effects of loss on ecosystem functions from direct human disturbance. We studied influence (acidification eutrophication) a natural stressor (low pH due bedrock geology) leaf‐shredding macroinvertebrates, fungal decomposers leaf decomposition rates in boreal streams. used pyrosequencing...
Abstract Air temperature at the northernmost latitudes is predicted to increase steeply and precipitation become more variable by end of 21st century, resulting in altered thermal hydrological regimes. We applied five climate scenarios predict future (2070–2100) benthic macroinvertebrate assemblages 239 near‐pristine sites across Finland (ca. 1200 km latitudinal span). used a multitaxon distribution model with air modeled daily flow as predictors. As expected, projected increased most...
Ongoing climate change is increasing the occurrence and intensity of drought episodes worldwide, including in boreal regions not previously regarded as prone, where impacts remain poorly understood. Ecological connectivity one factor that might influence community structure ecosystem functioning post-drought, by facilitating recovery sensitive species via dispersal at both local (e.g. a nearby habitat patch) regional (from other systems within same region) scales. In an outdoor mesocosm...
DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 64:69-76 (2005) - doi:10.3354/dao064069 Treatment ichthyophthiriasis after malachite green. I. Concrete tanks at salmonid farms Päivi Rintamäki-Kinnunen1,*, Mika Rahkonen2, Anna-Liisa Mannermaa-Keränen3, Lotta-Riina Suomalainen2, Heikki Mykrä2, E. Tellervo Valtonen2 1Department Biology, University Oulu, PO Box 3000,...