Justina Šapolaitė
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View article: Influence of past and future climate and land-use change on carbon and nitrogen accumulation in Baltic Sea seagrass meadows
Influence of past and future climate and land-use change on carbon and nitrogen accumulation in Baltic Sea seagrass meadows Open
Eutrophication and climate change are among the most severe and long-standing environmental problems threatening a large variety of coastal habitats and species in the Baltic Sea and elsewhere. Urgent and adequate management actions are ne…
View article: Changes in carbon isotope distribution in sediments of Lake Plateliai, Lithuania, over the last 130 years
Changes in carbon isotope distribution in sediments of Lake Plateliai, Lithuania, over the last 130 years Open
The radiocarbon (14C) dating of lake sediments is widely used to estimate the so-called reservoir age (RA), i.e. the 14C age difference between the atmospheric and lake ecosystem carbon reservoirs. However, lake sediments are a mixture of …
View article: Evaluating the Impact of Increased Heavy Oil Consumption on Urban Pollution Levels through Isotope (δ13C, δ34S, 14C) Composition
Evaluating the Impact of Increased Heavy Oil Consumption on Urban Pollution Levels through Isotope (δ13C, δ34S, 14C) Composition Open
The impact of heavy fuel oil (HFO) on the chemical and isotopic composition of submicron particulate matter (PM1) was investigated. For this purpose, we conducted an analysis of water-soluble inorganic ions (WSIIs) and multiple isotopes (δ…
View article: A Late Pleistocene coastal ecosystem in French Guiana was hyperdiverse relative to today
A Late Pleistocene coastal ecosystem in French Guiana was hyperdiverse relative to today Open
Warmer temperatures and higher sea level than today characterized the Last Interglacial interval [Pleistocene, 128 to 116 thousand years ago (ka)]. This period is a remarkable deep-time analog for temperature and sea-level conditions as pr…
View article: A 2,000‐Year Record of Eelgrass (<i>Zostera marina</i> L.) Colonization Shows Substantial Gains in Blue Carbon Storage and Nutrient Retention
A 2,000‐Year Record of Eelgrass (<i>Zostera marina</i> L.) Colonization Shows Substantial Gains in Blue Carbon Storage and Nutrient Retention Open
Assessing historical environmental conditions linked to habitat colonization is important for understanding long‐term resilience and improving conservation and restoration efforts. Such information is lacking for the seagrass Zostera marin…
View article: New insights into the subsistence economy of the Late Bronze Age (1100–400 cal BC) communities in the southeastern Baltic
New insights into the subsistence economy of the Late Bronze Age (1100–400 cal BC) communities in the southeastern Baltic Open
This paper presents the findings of a research project aimed at reconstructing the subsistence economy of the Late Bronze Age communities in eastern Lithuania. We focused on examining archaeobotanical and zooarchaeological assemblages from…
View article: Plants in the artefacts not used for their original purpose. A remarkable case from the Lazdininkai (Kalnalaukis) cemetery in western Lithuania
Plants in the artefacts not used for their original purpose. A remarkable case from the Lazdininkai (Kalnalaukis) cemetery in western Lithuania Open
This article investigates tinned bronze ornaments found in two graves of the Lazdininkai-Kalnalaukis cemetery dated to the end of the 2nd century to the first quarter of the 3rd century AD from the perspective of archaeological materials, …
View article: What cooling pond sediments can reveal about 14C in nuclear power plant liquid effluents: Case study Lake Drūkšiai, Ignalina nuclear power plant cooling pond
What cooling pond sediments can reveal about 14C in nuclear power plant liquid effluents: Case study Lake Drūkšiai, Ignalina nuclear power plant cooling pond Open
The vertical distribution of radiocarbon ( 14 C) was examined in two bottom sediment cores, taken from Lake Drūkšiai which had been used as a cooling pond for the Ignalina nuclear power plant (INPP) with two RBMK type reactors. The aim of …
View article: Long-range transport and deposition on the Arctic snowpack of nuclear contaminated particulate matter
Long-range transport and deposition on the Arctic snowpack of nuclear contaminated particulate matter Open
The primary environmental concern related to nuclear power is the production of radioactive waste hazardous to humans and the environment. The main scientific and technological problems to address this are related to the storage and dispos…
View article: NEW HUMAN BONE RADIOCARBON DATES FROM THE ROMAN PERIOD–MIGRATION PERIOD LITHUANIAN CEMETERIES
NEW HUMAN BONE RADIOCARBON DATES FROM THE ROMAN PERIOD–MIGRATION PERIOD LITHUANIAN CEMETERIES Open
A set (n = 37) of new human bone radiocarbon accelerator mass spectrometry ( 14 C AMS) dates from 11 Lithuanian Late Roman Period–Migration Period cemeteries is presented and discussed in the light of the established schemes of archaeologi…
View article: Horses in Lithuania in the Late Roman–Medieval Period (3rd–14th C AD) Burial Sites: Updates on Size, Age and Dating
Horses in Lithuania in the Late Roman–Medieval Period (3rd–14th C AD) Burial Sites: Updates on Size, Age and Dating Open
The tradition of burying horses in Lithuania lasted from the Early Roman period until the late 14th C AD. It was the longest-lasting custom in Europe, which has left about 2000 known horse burials. This paper publishes the osteometric data…
View article: Retrospective assessment of 14C aquatic and atmospheric releases from Ignalina Nuclear Power Plant due to exploitation of two RBMK-1500 type reactors
Retrospective assessment of 14C aquatic and atmospheric releases from Ignalina Nuclear Power Plant due to exploitation of two RBMK-1500 type reactors Open
<p>Considerable amounts of&#160;<sup>14</sup>C in the nuclear reactor are generated by neutrons. It accumulates in reactor components, coolant, and cleaning systems, and partly is released into the environment as gase…
View article: A dual stable isotope and radiocarbon approach for apportionment of aerosol sources
A dual stable isotope and radiocarbon approach for apportionment of aerosol sources Open
<p>Various natural and anthropogenic activities generate atmospheric sulfur and carbon aerosol which in turn has an adverse effect on human health, climate change and visibility [1], [2]. Man-made sources of aerosol include power pla…
View article: Distributed feedback quantum cascade laser absorption spectroscopy for airborne methane measurements
Distributed feedback quantum cascade laser absorption spectroscopy for airborne methane measurements Open
<p>The intensive development of industry, agriculture, and transportation causes many issues related to the negative impact on the environment and human health. Harmful products of human technogenic activity accumulate in the environ…
View article: Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir
Modeling of 14C Vertical Distribution in Bottom Sediments of the Ignalina Nuclear Power Plant Cooling Reservoir Open
The Ignalina Nuclear Power Plant (INPP) in Lithuania is a rare case when lake water is used instead of river or sea water for cooling. Lake Drūkšiai with water residence time of 3–4 year and undisturbed sediment layers is a unique system t…
View article: Investigation of reservoir age variations in Lake Druksiai caused by anthropogenic factors
Investigation of reservoir age variations in Lake Druksiai caused by anthropogenic factors Open
<p>The reservoir effect (RE) is defined as the difference between the radiocarbon isotope ratio (<sup>14</sup>C/<sup>12</sup>C) in the terrestrial and aquatic samples. Both natural processes and anthropogenic …
View article: Distribution of radiocarbon in sediments of the cooling pond of RBMK type Ignalina Nuclear Power Plant in Lithuania
Distribution of radiocarbon in sediments of the cooling pond of RBMK type Ignalina Nuclear Power Plant in Lithuania Open
The vertical distribution of radiocarbon (14C) was examined in the bottom sediment core, taken from Lake Drūkšiai, which has served as a cooling pond since 1983 for the 26 years of the Ignalina Nuclear Power Plant (INPP) operation using tw…
View article: Blooms of Toxic Cyanobacterium Nodularia spumigena in Norwegian Fjords During Holocene Warm Periods
Blooms of Toxic Cyanobacterium Nodularia spumigena in Norwegian Fjords During Holocene Warm Periods Open
In paleoecological studies, molecular markers are being used increasingly often to reconstruct community structures, environmental conditions and ecosystem changes. In this work, nodularin, anabaenopeptins and selected DNA sequences were a…
View article: The impact of Ignalina Nuclear Power Plant on Carbon-14 content in Lake Druksiai, Lithuania
The impact of Ignalina Nuclear Power Plant on Carbon-14 content in Lake Druksiai, Lithuania Open
<p>Nuclear Power Plants (NPPs) and nuclear fuel reprocessing sites are main producers of anthropogenic radiocarbon. Anthropogenic <sup>14</sup>C can be released into the environment in gaseous forms, with liquid effluents…
View article: Radiocarbon distribution in sediments of the cooling pond of the RBMK type nuclear power plant
Radiocarbon distribution in sediments of the cooling pond of the RBMK type nuclear power plant Open
<p>The radiocarbon, together with several isotopes of noble gasses such as <sup>41</sup>Ar, <sup>85m</sup>Kr, <sup>87</sup>Kr, <sup>88</sup>Kr, <sup>133</sup>Xe, <sup>…
View article: Investigation of carbon isotope ratio variations caused by natural and anthropogenic processes in lacustrine ecosystems
Investigation of carbon isotope ratio variations caused by natural and anthropogenic processes in lacustrine ecosystems Open
<p>The difference of radiocarbon (<sup>14</sup>C) concentration between terrestrial and aquatic samples is called the freshwater reservoir effect (FRE). The FRE is a potential issue for archaeologists dating fish bones, s…
View article: The Last Swiderians in Lithuania
The Last Swiderians in Lithuania Open
This paper focuses on an issue that was, and still remains, unsolved in Baltic Stone Age archaeology: the dating of the very end of the period of Swiderian culture. This time, the questions raised are what cultural unit (or units) should b…
View article: The Lateglacial-Early Holocene dynamics of the sedimentation environment based on the multi-proxy abiotic study of Lieporiai palaeolake, Northern Lithuania
The Lateglacial-Early Holocene dynamics of the sedimentation environment based on the multi-proxy abiotic study of Lieporiai palaeolake, Northern Lithuania Open
New data were obtained from the sedimentary sequence study of Lieporiai palaeolake, Northern Lithuania, employing a multi-proxy abiotic approach, for the description of the Lateglacial-Early Holocene palaeoenvironmental dynamics in the bas…
View article: Seasonal Variation in Stable Isotope Ratios of Cow Milk in Vilnius Region, Lithuania
Seasonal Variation in Stable Isotope Ratios of Cow Milk in Vilnius Region, Lithuania Open
Various studies have shown that stable isotope analysis has the potential to verify the geographic origin of foods and drinks. However, stable isotope composition is not always constant in the environment and can even change in the same ar…
View article: Region dependent <sup>13</sup>C, <sup>15</sup>N, <sup>18</sup>O isotope ratios in the cow milk
Region dependent <sup>13</sup>C, <sup>15</sup>N, <sup>18</sup>O isotope ratios in the cow milk Open
We present measurements of stable carbon, nitrogen and oxygen isotope ratio values in cow milk, forage and drinking water collected in Belarus. Milk, water and forage were sampled in Brest, Gomel, Grodno, Minsk and Mogilev regions during s…
View article: Origin Identification of Carbonaceous Aerosol Particles by Carbon Isotope Ratio Analysis
Origin Identification of Carbonaceous Aerosol Particles by Carbon Isotope Ratio Analysis Open
We applied stable carbon isotope ratio (13C/12C) and radiocarbon (14C) analysis for the quantification of three main aerosol sources (coal, biomass and liquid fossil fuel derived aerosol emissions). Submicron aerosol samples (PM1) were col…