Ecology of the bottom fauna and bioaccumulation of trace metals along the Lena River–Laptev Sea transect

• Published in: Environmental earth sciences Vol. 77; no. 2; pp. 1 - 10
• Main Authors: Demina, L. L., Galkin, S. V.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 2018; Springer Nature B.V
• Subjects: Bioaccumulation; Biogeosciences; Cadmium; Carbonates; Chromium; Copper; Earth and Environmental Science; Earth Sciences; Ecology; Environmental Science and Engineering; Fauna; Geochemistry; Geology; Heavy metals; Hydrology/Water Resources; Iron; Lead; Manganese; Marine invertebrates; Metal content; Methane; Nickel; Ophiuroidea; Original Article; Rivers; Seepage; Seepages; Shallow water; Shells; Soft tissues; Terrestrial Pollution; Tissues; Trace metals; Laptev Sea; Lena River; Ecology; Laptev Sea; Methane seeps; Bioaccumulation; Trace metals
• ISSN: 1866-6280; 1866-6299
• DOI: 10.1007/s12665-018-7231-y

The first data on ecology and trace metal (As, Cd, Cr, Cu, Fe, Mn, Ni, Pb) bioaccumulation by macrozoobenthic organisms in area along the 130°E meridional transect from shallow water near the Lena River’s delta till the 78°N are presented. At the newly discovered methane seeps in the shallow Laptev Sea areas (72 m depth), a higher total abundance and biomass compared with background stations were recorded. In carbonate shells and soft tissues of Bivalvia Portlandia arctica and Astarte borealis, the high concentrations of Mn, Fe, Pb, Ni and Co were detected that varied in dependence from sampling site. In the dominating taxa of brittle stars (Ophiuroidea), there were found no significant differences between majority of trace metal content in organisms inhabiting the seeps area and background ones. An elevated content of some metals was detected in the Asteroidea bodies that may be attributed to its trophic behavior (deposit feeder).