A5024244248- Aquatic Invertebrate Ecology and Behavior
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Fish Ecology and Management Studies
- Marine and environmental studies
- Environmental Toxicology and Ecotoxicology
- Peatlands and Wetlands Ecology
- Marine and coastal ecosystems
- Bryophyte Studies and Records
- Ecology and biodiversity studies
- Hydrology and Watershed Management Studies
- Land Use and Ecosystem Services
- Botany and Plant Ecology Studies
- Environmental Science and Water Management
- Coastal wetland ecosystem dynamics
- Heavy metals in environment
- Pesticide and Herbicide Environmental Studies
- Diatoms and Algae Research
- Lichen and fungal ecology
- Water Quality and Pollution Assessment
- Global Socioeconomic and Political Dynamics
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Conservation, Biodiversity, and Resource Management
- Environmental Education and Sustainability
University of Latvia
2014-2025
Latvian Institute of Aquatic Ecology
2011-2016
Altaiskiy State Nature Biosphere Reserve
2011
Mosses have been neglected as a study subject for long time. Recent research shows that mosses contain remarkable and unique substances with high biological activity. The aim of this study, accordingly, was to analyze the composition screen their antimicrobial anticancer total concentration polyphenols carbohydrates, amount dry residue radical scavenging activity were determined preliminary evaluation chemical moss extracts. In order identify present in mosses, two types extrahents...
Macroinvertebrates of the Venta River have been studied since beginning 20th century. However, complex studies along from Latvian–Lithuanian border to its mouth into Baltic Sea irregular and fragmentary. The aim this study was assess ecological status analyze abundance fauna composition macroinvertebrates entire length river in territory Latvia. This is first kind for examining specialization sediment substrates their functional feeding groups. Within framework study, importance assessed 10...
1. The European Water Framework Directive provides a framework for improving the ecological quality of stream ecosystems, with deviation from reference used as measure status. 2. Here we examine possibility using less impacted sites Latvia, Lithuania and Poland to establish Danish network macrophyte assemblages, guiding image identification possible references within Denmark. Both approaches were evaluated historical records. 3. Four different assemblages identified mid-sized streams in...
Bryophytes have been more and studied, due to presence of many biologically active compounds among their secondary metabolites, unique drought resistance as well wide use bioindicators environmental pollution.The aim the present study was determine seasonal changes in chemical composition metabolites four moss species (Sphagnum fallax, Sphagnum magellanicum, Polytrichum juniperinum, Pleurozium schreberi).Concentration main groups constituents antioxidant activity were determined related...
Potential Impact of Climate Change on Aquatic Vegetation River Salaca, Latvia Species diversity and cover aquatic macrophytes were investigated in the Salaca 2007. In total 24 different taxa found. Schoenoplectus lacustris was dominant species , Sagittaria sagittifolia, Nuphar lutea, Nymphaea candida, Butomus umbellatus Potamogeton frequent. Cover varied river between 10-90%, maximum in-stream reached rapidly flowing sites. Comparison 1986 2002 surveys several stretches done. Causes for...
Investigations of water chemical composition and biota Lake Engure have been carried out since 1995 by using standard methods for inland surface waters.Time series air temperature precipitation the Mersrags meteorological station period 1928 to 2009 are used trend analysis.The results show that long-term development hydroecosystem is related such environmental factors as lake's geographical location, basin morphology, well history relationship biotic abiotic factors.
Abstract The article discusses the results of national project aimed at elaboration a conceptual integrated model Engure LT(S)ER (Long-Term Socio-Ecological Research) platform Latvia. represents drainage basin costal Lake (644 km2) together with coastal marine zone Gulf Rîga. core ecoregion is Nature Park (LENP), which Ramsar site. slightly modified version based on DPSIR (Drivers-Pressures-States-Impacts-Responses) concept. socioecological system was spatially demarcated and drivers were...
Hydrometeorological parameters and aquatic chemistry of Lake Engure: Trends changes due to human impact natural variability Engure, located in Latvia, is the largest shallow coastal lake that developed after retreat Littorina Sea. It supports high biodiversity has national international importance. Engure a hardwater with abundant macrophyte charophyte vegetation. The present study determined main meteorological indicators related global warming, also climate extremes. water level regulated...
Dissolved organic matter (DOM) in surface waters influences mineral weathering, nutrient cycling, aggregation of particulate and photochemical reactions aquatic communities. In this study, the effectiveness UV fluorescence measurements distinguishing origin DOM processes within river basin were analyzed using River Salaca as an example. The is characterized by low anthropogenic pressure, however, water color during last few decades has increased (an effect known brownification). As tools to...
The development of biological communities is an important research issue regarding quality elements. However, it still uncertain how different organism groups and their metrics are affected by environmental factors. A study high-quality sites medium-sized lowland streams typical for Latvia (ecoregion Baltic province) was carried out with emphasis on hydrological hydromorphological characteristics. investigations were within the STAR project using designated standard methods. We found that...
Hydropower plants (HPPs) are equipped with reservoirs that can accumulate the toxic effluents and disturb water flow of rivers.The aim this study was to evaluate biochemical responses zebra mussel Dreissena polymorpha inhabiting reservoir Riga HPP in comparison mussels from natural lake Kanieris Latvia.In mussels, high Mn-SOD activity low level lipid peroxidation (production TBARS) soft tissues suggested an elevated antioxidant activity.Compared specimens, had levels RI GSH while their...