Red-colored water in the supralittoral zone of the Alaid Volcano: long-term spectroscopic observations

Anna A. Zhiltsova; Leonid P. Anikin; Vladimir A. Rashidov; Svetlana V. Patsaeva

doi:10.1117/12.2590755

4 May 2021 Red-colored water in the supralittoral zone of the Alaid Volcano: long-term spectroscopic observations

Anna A. Zhiltsova, Leonid P. Anikin, Vladimir A. Rashidov, Svetlana V. Patsaeva

Proceedings Volume 11845, Saratov Fall Meeting 2020: Optical and Nanotechnologies for Biology and Medicine; 118450F (2021) https://doi.org/10.1117/12.2590755
Event: Saratov Fall Meeting 2020, 2020, Saratov, Russian Federation

Abstract

The paper presents the results of a spectroscopic study of the "colored" water detected in the splash baths in the supralittoral zone of the Alaid Volcano (the Kuril Islands) from 2015 to 2019. The splash baths with magenta, red and red-yellow water located in different parts of the island in various summer seasons. The analysis of fluorescenсе and absorption data of the water samples revealed the presence of a large amount of bacteriochlorophyll a in the water, which is the main photosynthetic pigment of purple sulfur bacteria. The assumption of the presence of cells of microorganisms was confirmed by observations under a microscope. To determine the morphotype of microorganisms the acetonemethanol extracts from the samples were prepared and studied using spectral methods. The characteristic absorption lines of carotenoids and the monomeric form of bacteriochlorophyll identified cells as Thiocystis and Thiorhodococcus morphotypes of purple sulfur bacteria. The regular observation of water samples with microorganisms in the supralittoral zone of the Alaid Volcano leads to the conclusion that the development of the purple phototrophic bacteria is not an accidental event, but a typical phenomenon in this area. The fact that each summer season colored water were found in different places indicates a cyclical changes in living conditions of microorganisms from favorable to unfavorable habitats.

Citation Download Citation

Anna A. Zhiltsova, Leonid P. Anikin, Vladimir A. Rashidov, and Svetlana V. Patsaeva "Red-colored water in the supralittoral zone of the Alaid Volcano: long-term spectroscopic observations", Proc. SPIE 11845, Saratov Fall Meeting 2020: Optical and Nanotechnologies for Biology and Medicine, 118450F (4 May 2021); https://doi.org/10.1117/12.2590755

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available