A5008456747- Aquatic Ecosystems and Phytoplankton Dynamics
- Soil and Water Nutrient Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Environmental DNA in Biodiversity Studies
- Indigenous Studies and Ecology
- Ecology and biodiversity studies
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Ecology and Vegetation Dynamics Studies
- Environmental Science and Water Management
- Marine and coastal ecosystems
- Species Distribution and Climate Change
- Integrated Water Resources Management
- Asian Geopolitics and Ethnography
- Forest Ecology and Biodiversity Studies
- European and International Law Studies
- Cambodian History and Society
- Aquatic Ecosystems and Biodiversity
- Diatoms and Algae Research
- Marine and environmental studies
- Botany and Plant Ecology Studies
- Microbial Community Ecology and Physiology
- Fish Biology and Ecology Studies
Norwegian Institute for Water Research
2013-2024
Akvaplan-niva
2008-2024
Abstract Aim We studied global variation in beta diversity patterns of lake macrophytes using regional data from across the world. Specifically, we examined (1) how aquatic is partitioned between species turnover and nestedness within each study region, (2) which environmental characteristics structure these components. Location Global. Methods used presence–absence for 21 regions distributed around calculated pairwise‐site multiple‐site among lakes region Sørensen dissimilarity index it...
Niche and neutral processes drive community assembly metacommunity dynamics, but their relative importance might vary with the spatial scale. The contribution of niche is generally expected to increase increasing extent at a higher rate than that processes. However, what composition limited by dispersal (usually considered process) over scales depend on capacity composing species. To investigate mechanisms underlying distribution diversity species known have great powers (hundreds...
Data on phytoplankton, macrophytes, benthic invertebrates and fish from more than 2000 lakes in 22 European countries were used to develop test metrics for assessing the ecological status of as required by Water Framework Directive. The strongest most sensitive 11 responding eutrophication pressure phytoplankton chlorophyll a, a taxonomic composition trophic index functional traits index, macrophyte intercalibration metric Nordic lake index. Intermediate response was found cyanobacterial...
Geographic variation can lead to the evolution of different local varieties within a given species, therefore influencing its distribution and genetic structure. We investigated contribution plasticity adaptation performance common aquatic plant (Potamogeton pectinatus) in contrasting climates, using reciprocal transplants at three experimental sites across latitudinal cline Europe. Plants from 54 genets, originally collected 14 populations situated four climatic regions (subarctic, cold...
We studied community–environment relationships of lake macrophytes at two metacommunity scales using data from 16 regions across the world. More specifically, we examined (a) whether macrophyte communities respond similar to key local environmental factors, major climate variables and spatial locations in each (i.e., within-region approach) (b) how well can explained variability multiple metacommunities be accounted for by elevation range, extent, latitude, longitude, age oldest within...
1. Data on submerged and floating‐leafed macrophytes, phytoplankton, nutrients (N, P) calcium were collected from twenty‐four small lakes ( 1 km 2 ) over a wide range of latitudes in Norway. The majority the investigated mesotrophic or eutrophic, most markedly affected by diffuse point‐source runoff agriculture. According to their macrophyte species composition, can be classified as Potamogeton Chara lakes, combination these. 2. This study is consistent with ‘two alternative stable states’...
The ability to detect founding populations of invasive species or rare with low number individuals is important for aquatic ecosystem management. Traditional approaches use historical data, knowledge the species' ecology and time-consuming surveys. Within past decade, environmental DNA (eDNA) has emerged as a powerful additional tracking tool. While much work been done animals, comparatively very little plants. Here we investigated transportation seasonal changes in eDNA concentrations an...
The impact of Elodea canadensis on aquatic macrophyte biodiversity in (Lake) Steinsfjord has been studied through extensive lake-wide surveys and photographic sampling. E. greatly expanded since its appearance 1978 still dominated the community 2004. areal distribution peaked within 6 years from invasion remained relatively stable since; however, stands no longer reach water surface. significantly increased depth range, but cover-weighted mean unchanged, suggesting that 3–4 m is optimal...
Summary The relative role of environmental and regional processes in determining patterns biodiversity may vary across spatial scales. In inland aquatic communities, macrophytes zooplankton have the potential to disperse over large scales (hundreds kilometres), but species richness ( SR ) at different is poorly understood. To assess importance acting on both (within‐region) continental (among‐region) scales, we surveyed 139 waterbodies five geographic regions (Spain, Italy, Netherlands,...
Abstract Arctic and sub‐Arctic lakes in northern Europe are increasingly threatened by climate change, which can affect their biodiversity directly shifting thermal hydrological regimes, indirectly altering landscape processes catchment vegetation. Most previous studies of lake responses to environmental changes have focused on only a single organismal group. Investigations at whole‐lake scales that integrate different habitats trophic levels currently rare, but highly necessary for future...
Meiktila Lake is a shallow reservoir located close to city in central Myanmar. Its water used for irrigation, domestic purposes and drinking water. No detailed study of the presence cyanobacteria their potential toxin production has been conducted so far. To ascertain cyanobacterial composition toxins Lake, samples were collected March November 2017 investigated physico-chemical biological parameters. Phytoplankton biomass determination revealed that most dominated by cyanobacterium...
Abstract Isoëtes are iconic but understudied wetland plants, despite having suffered severe losses globally mainly because of alterations in their habitats. We therefore provide the first global ecological assessment aquatic to identify environmental requirements and evaluate if taxonomically related species differ ecology. The resulted an extensive new database on , niche analyses, descriptive accounts. compiled a that includes all known data collected from 1935 2023 regarding Isoëtes. then...
macrophyte–phytoplankton interactions were investigated using a dual laboratory and field approach during growing season, with responses quantified as changes in biomass. Short-term, close-range microcosms always led to mutual exclusion of macrophytes (Elodea canadensis or Ceratophyllum demersum) algae (Raphidocelis subcapitata, Fistulifera pelliculosa) cyanobacteria (Synechococcus leopoliensis), suggesting regulation by positive feedback mechanisms, progressively establishing reinforcing...
Observations are key to understand the drivers of biodiversity loss, and impacts on ecosystem services ultimately people. Many EU policies initiatives demand unbiased, integrated regularly updated service data. However, efforts monitor spatially temporally fragmented, taxonomically biased, lack integration in Europe. EuropaBON aims bridge this gap by designing an EU-wide framework for monitoring services. harnesses power modelling essential variables integrate different reporting streams,...
Abstract A multitude of Norwegian rivers are managed for generating hydroelectric power (HEP). The hydrology these hydrorivers changes in various ways which reflect the implemented HEP schemes. Increased winter flows and a concomitant lack ice‐cover features found downstream installations on many hydrorivers. Our study objectives were (1) to assess aquatic macrophyte abundance subsequent development; (2) evaluate environmental conditions under nuisance growths macrophytes likely occur....
Abstract. We conducted a 3-year artificial deepening of the thermocline in dimictic Lake Breisjøen, southern Norway, by means large submerged propeller. An adjacent lake served as untreated reference. The manipulation increased depth from 6 to 20 m, caused significant increase heat content, and delayed ice-on about days. There were only minor changes water chemistry. Concentrations sulphate declined, perhaps due greater reduction at sediment-water interface. particulate carbon nitrogen...
(2009). Macrophyte responses to water level fluctuation in Fennoscandinavian Lakes — Applying a common index. SIL Proceedings, 1922-2010: Vol. 30, No. 5, pp. 765-769.
Inlay Lake is the second largest natural lake in Myanmar. Located Shan State, eastern part of country, it a known biodiversity hotspot. The negatively affected by an increasing local human population and rapid growth both agriculture tourism. In recent decades, several studies have listed faunistic floristic groups Lake, but there still general lack knowledge about aquatic macrophyte phytoplankton community composition abundance, their interactions. To fill this gap, field surveys biological...