Among the publications in this issue, Nikolai Filatov highlighted a study by researchers from the Shirshov Institute of Oceanology RAS and the Moscow Institute of Physics and Technology — Alexander Konik, Alexey Isaev, and Alexey Zimin — assessing the accuracy of surface water temperature measurements for Lake Ladoga using data from the MODIS/AQUA and MODIS/TERRA radiometers.
— This study, like many other scientific results on lakes Ladoga and Onego, is of great importance for the federal Clean Ladoga project and will significantly aid in its implementation. It is also noteworthy that the study was conducted using remote sensing methods, — said Nikolai Filatov.
Another article in the journal focuses on research also carried out using modern remote sensing methods — a publication by Evgeny Morozov, Senior Researcher at the Marine Hydrophysical Institute RAS, and Dmitry Pozdnyakov, Deputy Director for Science at the Nansen International Environmental and Remote Sensing Centre, examining plankton development patterns in the White Sea based on nearly 20 years of observations.
RAS Corr. Fellow Nikolai Filatov also spotlighted the work of researchers from the Northern Water Problems Institute and Institute of Geology of the KarRC RAS, and Empress Catherine II Saint Petersburg Mining University — Galina Borodulina, Igor Tokarev, Vitaly Shekov, and Pavel Medvedev — concerning the chemical composition of water in the Ruskeala Mining Park.
— Knowing the quality of the water feeding the quarry and the overall state of this water body is essential for its future use and monitoring, — explained Nikolai Filatov.
The issue also includes a piece on the life and work of the renowned Russian scientist Konstantin Arsenyev (1789–1865) – the founder of Russian statistics and Russian regional economic geography. In 1845, he was one of the founders of the Russian Geographical Society. His biography includes ties to Petrozavodsk and Karelia. In 1812, during the Patriotic War, he was evacuated to Petrozavodsk, where he studied the history of the Olonets mining plants. Later, while gravely ill, he was brought to Petrozavodsk shortly before his death to be with his son, the Olonets governor Yu. K. Arsenyev. Here, he passed away and was buried in the Exaltation of the Holy Cross Cathedral.

Participants of the project for creating an exhibition dedicated to K.I. Arsenyev – authors of an article in the Transactions of KarRC RAS (left to right): Tatyana Regerand, Deputy Director of the Northern Water Problems Institute KarRC RAS; Nikolai Filatov, RAS Corresponding Fellow; Anastasia Vasilyeva, Senior Researcher at the Institute of Economics KarRC RAS.
A traveling exhibition titled “K.I. Arsenyev – Prominent Geographer, Statistician, and One of the Organizers of the Russian Imperial Geographical Society” has been initiated and created by the Russian Geographical Society’s Karelian Branch, the Northern Water Problems Institute and Institute of Economics of the KarRC RAS. This project, led by RAS Corr. Fellow Nikolai Filatov, was supported by a grant from the Russian Geographical Society in 2025.
The volume also contains a detailed account of the themes and participants of the Winter Limnology School and Workshop – an annual scientific and educational event which took place in Kostomuksha on April 5-10, 2026.
— Russia has 3 million lakes, and our journal series, which was launched in 2009, filled the gap caused by the absence of a scientific outlet focusing on the study of inland water bodies. Moreover, the Limnology and Oceanology Series of the Transactions of KarRC RAS has since remained the leading journal in this field in Russia, — said Nikolai Filatov.
It is worth noting that this issue is the first to be fully printed at the KarRC RAS Editorial and Publishing Department on the new RICOH Pro C5300S digital input press, which allows for faster and enhanced quality printing. Besides, coated paper was used for the Transactions of KarRC RAS instead of offset paper.
Preparation of the next Limnology and Oceanology Series issue of the Transactions of KarRC RAS, scheduled for publication in September, is already underway.






