Abstract
The problem of biogenic income from rocks into a water ecosystem and of their use by hydrobionts is considered by the example of Lake Baikal biogeocenoses. A complex interreaction of stony material and Baikal water occurs on the stony littoral of Lake Baikal with an active participation of benthic and planktonic hydrobionts. Biogeochemical processes enable income of biophile elements providing productivity of stony littoral and hydrobionts biodiversity. A particular role in the littoral zone belongs to symbiotic organisms: lichens and sponges. They extract from the tocks a wide spectrum of macro- and micro- elements including phosphorus, fixe nitrogen and consume carbon. Biodiversity and bioproductivity of stony littoral depend on the diversity of petrographic composition of the rocks and on their geochemical peculiarities. Increase of anthropogenic impact onto the stony littoral manifested by income of biogenic elements and alien microbial cenosis flow results in degradation of primary aquatic biogeocenoses.
Highlights
Riftogenic Lake Baikal is a very good object for studies of biochemical peculiarities of interreaction of fresh waters with rocks
The last factor determines the biodiversity of stony littoral
Biogeocenoses, in which bedding stone substratum serves as a source of biophile elements for zoo- and phytobenthos, form in Lake Baikal littoral zone
Summary
Riftogenic Lake Baikal is a very good object for studies of biochemical peculiarities of interreaction of fresh waters with rocks. The stony littoral of Lake Baikal represents a unique object for study of protobiogeochemical processes and for revealing of the role of biota in the involving of macro- and microelements into biogeochemical turnover and into re-distribution of chemicals between rocks, benthic and planktonic organisms and water (Suturin et al, 2003) (Figure 1). The bench stony material under the conditions of a freshwater body may serve as a source of biophile elements diversity for benthic organisms For ultraoligotrophic lakes such as Lake Baikal, the income of biophile elements only from aquatic environment is limited. Under the conditions of littoral with permanent transport of divssolved elements via aquatic environment and of regular variations of carbon dioxide and oxygen concentrations in the water, the leaching process considerably accelerates
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
