Mariusz Gałka
A5040528335- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- Botany and Plant Ecology Studies
- Coastal wetland ecosystem dynamics
- Fire effects on ecosystems
- Geological formations and processes
- Historical and Archaeological Studies
- Ancient and Medieval Archaeology Studies
- Climate change and permafrost
- Tree-ring climate responses
- Marine and environmental studies
- Archaeology and ancient environmental studies
- Lichen and fungal ecology
- Bryophyte Studies and Records
- Pleistocene-Era Hominins and Archaeology
- Aeolian processes and effects
- Geological Formations and Processes Exploration
- Particle physics theoretical and experimental studies
- Cryospheric studies and observations
- Landslides and related hazards
- Particle Detector Development and Performance
- Isotope Analysis in Ecology
- Hydrology and Sediment Transport Processes
- Plant Ecology and Soil Science
- Integrated Water Resources Management
University of Łódź
2019-2025
Adam Mickiewicz University in Poznań
2012-2021
GeoInformation (United Kingdom)
2021
Google (United States)
2019
University of Latvia
2015-2016
Gdańsk University of Technology
2014
Here, we present results from the most comprehensive compilation of Holocene peat soil properties with associated carbon and nitrogen accumulation rates for northern peatlands. Our database consists 268 cores 215 sites located north 45°N. It encompasses regions within which data have only recently become available, such as West Siberia Lowlands, Hudson Bay Kamchatka in Far East Russia, Tibetan Plateau. For all peatlands, content organic matter was estimated at 42 ± 3% (standard deviation)...
• Analysis of brGDGT distributions in global peat dataset. Correlation with pH and mean annual air temperature. Development peat-specific temperature proxies. Glycerol dialkyl glycerol tetraethers (GDGTs) are membrane-spanning lipids from Bacteria Archaea that ubiquitous a range natural archives especially abundant peat. Previous work demonstrated the distribution bacterial branched GDGTs (brGDGTs) mineral soils is correlated to environmental factors such as (MAAT) soil pH. However,...
Abstract. Wildfire occurrence is influenced by climate, vegetation and human activities. A key challenge for understanding the risk of fires quantifying mediating effect on fire regimes. Here, we explore relative importance Holocene land cover, use, dominant functional forest type, climate dynamics biomass burning in temperate boreo-nemoral regions central eastern Europe over past 12 kyr. We used an extensive data set pollen sedimentary charcoal records, combination with simulations...
Abstract Aim We provide the first European‐scale geospatial training set relating charcoal signal in surface lake sediments to fire parameters (number, intensity and area) recorded by satellite moderate resolution imaging spectroradiometer (MODIS) sensors. Our calibration is intended for quantitative reconstructions of key fire‐regime using sediment sequences microscopic (MIC from pollen slides, particles 10–500 µm) macroscopic (MAC sieves, > 100 µm). Location North–south east–west...
We present the postglacial history of vegetation, human activities and changes in lake level context climate change northeast Poland from ~14,000 cal. b.p. to day. The palaeoecological reconstruction is based on results high-resolution plant macrofossil analyses as well records pollen, Cladocera radiocarbon dating. Climate fluctuations activity have caused many vegetation development Jezioro Linówek vicinity this lake. Early Holocene warming that occurred at ~9500 b.c. an increase Betula...
Abstract The forcing mechanisms responsible for centennial to millennial variability of mid-latitude storminess are still poorly understood. On decadal scales, the present-day geographic North-Atlantic responds latitudinal shifts westerly wind-belt under prime control Oscillation (NAO). An equivalent mechanism operating at time scales during Holocene is be ascertained, especially owing lack high-resolution and continuous records past-storminess extending far enough in time. Here we present a...
Proxy-based reconstructions of climate variability over the last millennium provide important insights for understanding current change within a long-term context. Past hydrological changes are particularly difficult to reconstruct, yet rainfall patterns and among most critical environmental variables. Ombrotrophic bogs, entirely dependent on water from precipitation sensitive in balance between evapotranspiration, highly suitable such hydro-climate reconstructions. We present multi-proxy...
Peat deposits from an ombrotrophic bog (north-eastern Poland) were analysed to reconstruct peatland development and environmental changes. This paper presents reconstructions of hydrological changes plant succession over the last 6000 years. The methods included high-resolution analysis macrofossils, pollen testate amoebae, supported by radiocarbon dating. Three main phases identified in history surrounding woodland vegetation: 4000–400 BC, 400 BC–AD 1700 AD 1700–2011. Except for...
Abstract The relative importance of global versus local environmental factors for growth and thus carbon uptake the bryophyte genus Sphagnum— main peat‐former ecosystem engineer in northern peatlands—remains unclear. We measured length net primary production (NPP) two abundant Sphagnum species across 99 Holarctic peatlands. tested previously proposed abiotic biotic drivers peatland (climate, N deposition, water table depth vascular plant cover) on these responses. Employing structural...
Species' functional traits are closely related to ecosystem processes through evolutionary adaptation, and thus directly connected environmental changes. not commonly used in palaeoecology, even though they offer powerful advantages understanding the impact of disturbances a mechanistic way over time. Here we show that testate amoebae (TA), common group palaeoecological indicators, can serve as an early warning signal disturbance help determine thresholds resilience peatlands. We analysed TA...
Abstract. The Eurasian (née European) Modern Pollen Database (EMPD) was established in 2013 to provide a public database of high-quality modern pollen surface samples help support studies past climate, land cover, and use using fossil pollen. EMPD is part of, complementary to, the European (EPD) which contains data on found Late Quaternary sedimentary archives throughout region. EPD turn rapidly growing Neotoma database, now primary home for global palaeoecological data. This paper describes...
Abstract The Medieval Climate Anomaly (MCA) is a preindustrial phase of pronounced natural climate variability with core period from 1000 to 1200 CE. paper presents synthesis that integrates palaeotemperature records the Greater Mediterranean Region encompassing past 1,500 years based on multiproxy data 79 published land and marine sites. MCA warming dominated Western (Iberia, NW Africa) as well northern areas Central Eastern region. cooling prevailed in Canary Current Upwelling System,...
Abstract Permafrost peatlands are found in high-latitude regions and store globally-important amounts of soil organic carbon. These warming at over twice the global average rate, causing permafrost thaw, exposing previously inert carbon to decomposition emission atmosphere as greenhouse gases. However, it is unclear how peatland hydrological behaviour, vegetation structure balance, linkages between them, will respond thaw a climate. Here we show that follow divergent ecohydrological...
Northern peatlands store globally-important amounts of carbon in the form partly decomposed plant detritus. Drying associated with climate and land-use change may lead to increased fire frequency severity rapid loss atmosphere. However, our understanding patterns drivers peatland burning on an appropriate decadal millennial timescale relies heavily individual site-based reconstructions. For first time, we synthesise macrocharcoal records from across North America, Europe, Patagonia reveal...