Affiliation:
1. Pacific Branch of Russian Federal Research Institute of Fisheries and Oceanography (TINRO) Vladivostok 690091 Russia
2. Shirshov Institute of Oceanology Russian Academy of Sciences (IO RAS) Moscow 117997 Russia
3. Severtsov Institute of Ecology and Evolution Russian Academy of Sciences (IPEE) Moscow 119071 Russia
4. Dagestan State University (DSU) Makhachkala 367000 Russia
5. Tomsk State University (TSU) Tomsk 634050 Russia
6. Caspian Institute of Biological Resources Dagestan Federal Research Center, Russian Academy of Sciences (CIBR DFRC RAS) Makhachkala 367023 Russia
Abstract
AbstractBiogeographers, ecologists, palaeontologists, and conservation managers often deal with checklists in which not all individuals have been identified to a species level, or the accuracy of species identification is questionable. Is it possible and credible to investigate species richness based on such checklists? Studies on macrofauna in the Far Eastern seas, eastern Arctic seas, and adjacent waters of the Pacific and Arctic Oceans suggest that in different habitats and for diverse taxa, species, and higher taxa richness strongly correlate with each other and increase with an expansion in the study area and sample size according to the species–area law. Such an increase is higher in the bottom zone than in the pelagic. Species and higher taxa richness also show a decrease from lower to higher latitudes, which is in line with the Humboldt–Wallace’s law. According to Willis’ law and self‐similarity in the organisation of taxonomic levels, species richness can be assessed based on the genus, family, and order richness. In other words, supraspecies richness itself can tell us the same as species richness and therefore certain global patterns revealed at the species level may also be revealed at the supraspecies level. Such a concordance in general trends among richness parameters at different taxonomic levels in practice implies that species richness can be studied based on lists that lack species identifications or lists with doubtful species identification. We suggest bolder use of supraspecies richness in science and practice, discussing the disadvantages and advantages of this approach.
Subject
Earth-Surface Processes,Geography, Planning and Development
Cited by
2 articles.
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