Сoncept of hierarchical structure of large marine ecosystems zoning in Arctic shelf seas of Russia

Lead Author Kirill, Petrov
Institution Contact Saint-Petersburg State University Institute of Earth Sciences 33/35, 10-th line, Vasilievsky Island Saint-Petersburg 199178 RUSSIA
Co-Authors Andrey Bobkov Saint-Petersburg State University Institute of Earth Sciences 33/35, 10-th line, Vasilievsky Island Saint-Petersburg 199178 RUSSIA
Theme Theme 1: Vulnerability of Arctic Environments
Session Name 1.8 Novel approaches to communicate research facts and predictions of the future of Arctic marine biota to non-scientific stakeholders
Presentation Type Poster
Abstract text Principles of biogeographical regionalization of World Ocean are widely discussed in the literature. In works of Spalding et al (2007) for lower unit of regionalization adopted ecoregions - large marine ecosystems. These are very large water areas, as a rule, the whole sea basins, analogs of physiographic countries on the land. In our view, large marine ecosystems comprise a hierarchical system of smaller units’ regionalization, which corresponds to a natural distribution of hydrobionts' communities. In the continuing process of regionalization of large marine ecosystems is proposed to use the bionomic approach that takes into consideration the link of communities of marine organisms with habitats that allows a meaningful comparison of areas at different levels of hierarchy. System of biogeographical regionalization should be based on natural, historical and bionomic features of water areas (Petrov, 2004).
Originality of bionomic area, in view of authors, is determined by its position in system of units of latitudinal zonality (zone, area, province), vertical (depth) differentiation (vertical zone, layer) and azonal one which is controlled by geological and geomorphological factors, that determine the uniqueness of marine basin, region and district. Principles of hierarchical system of units of bionomic zoning are discussed on example of Arctic seas of Russia.
Detailed zoning of marine basins: 1) is a necessary condition for understanding their current state through monitoring, 2) allows to extrapolate recommendations on rational environmental management for similar ecoregions, and, 3) helps to prevent negative consequences of anthropogenic effects on vulnerable water areas of the Arctic.