Analysis of Distribution of Artificial Radionuclides in the Ecological System of Barents Sea

Diatom assemblages from Holocene sediments of the Kola Peninsula

“…Peat accumulation resumed in moraine and drained lakes at the surface of Umbozero Lake terraces. Intense accumulation of peat and rapid lateral growth of bogs under conditions of the humid climate in the terminal Atlantic cold period was also noted by other researchers [4,5,[9][10][11].…”

“…The repeated formation of ice shields during the Pleistocene determined the peculiar features of the relief, structure of Quaternary sediments, and recent landscapes of the peninsula. The paleogeographic reconstructions available for the last 10-11 ka are based on results of the palynological analysis of lacustrine and boggy sediments [3][4][5][9][10][11] and, to a lesser extent, on diatoms from the lacustrine sediments [7,8]. In this communication, we present the first data on diatom assemblages from peat sections of the central Kola Peninsula and their detailed radiocarbon ages.…”

Selected anthropogenic and natural radioisotopes in the Barents Sea and off the western coast of Svalbard

“…For cod, the estimated effective half-life of 137 Cs was between 5.8 and 7.5 years and for haddock, between 5.3 and 9.5 years. In the studies done in the Barents Sea after 1982, Matishov et al (2005) reported an effective half-life of 7 years found in Atlantic cod whereas in Japan, Kasamatsu and Ishikawa (1997) reported an effective half-life of 7.5 years found in the Pacific cod. Both of these are in agreement with the range shown in this study.…”

137Cs and isotopic ratios of Pu and U in lichens and mosses from Russian Arctic areas

“…Radionuclide concentrations in aquatic ecosystems in sea areas nearby Novaya Zemlya have been well investigated. For instance, Russian researchers (Matishov et al 1994a , 2020 , 2021 ), a joint long-term Norwegian-Russian co-operation (JRNEG 1994 , 1996 ; Strand et al 1994 ; Salbu et al 1997 ; Dahle et al 2009 ; JNREG 2014 ; Gwynn et al 2016 ; Heldal et al 2018 ), Polish-Russian co-operation (Matishov et al 1994b ; Szczypa and Reszka 1998 ), and Finnish-Russian co-operation (Matishov et al 1995 , 2011 ; Leppänen et al 2013 ) have improved knowledge about radioecology in these aquatic ecosystems. It has been found in these studies that radionuclide concentrations in aquatic environment in Russian Arctic regions have been generally at a low level, not significantly deviating from the radioactivity levels due to global fallout.…”

“…Large part of this research data is unpublished, secreted, and restricted. For example, an original article by Matishov et al ( 1994b ) including activity concentrations of radionuclides in soil, lichen, and moss samples from Barents Sea islands and Novaya Zemlya is no longer available, but fortunately, Szczypa and Reszka ( 1998 ) published their own dataset on the similar topic. A more recent study explored cryoconite samples from Nalli glacier, Novaya Zemlya (Miroshnikov et al 2021 ).…”