Abstract
A revised checklist of marine benthic algae of the Commander Islands (Russian Pacific) is presented. It is based on the authors’ field collections. The list of algae of the area totals to 187 species (36 Chlorophyta, 38 Ochrophyta, class Phaeophyceae, and 113 Rhodophyta) of these 44 species (9 Chlorophyta, 8 Ochrophyta, class Phaeophyceae, and 27 Rhodophyta) are added to the previous checklists (Selivanova and Zhigadlova, 1997). We also confirm the presence of 5 species on the Islands that were absent in our earlier material but were recorded by other authors (Phycodrys amchitkensis, Mastocarpus papillatus, Lithothamnion sonderi, Odonthalia dentata, and Pleonosporium vancouverianum). The species list of the newly recorded algae contains information on their ecology, fertility, and distribution. The algal taxonomy and nomenclature are updated with new world data.
Highlights
Information on the marine algae of the Commander Islands is more comprehensive than in other regions of the Russian Pacific
The Islands’ flora has been studied more thoroughly and described in many publications by Russian and foreign authors [1,2,3,4] including our works [5,6,7], where we presented preliminary results of the revision of the marine algal flora
Outdated or erroneous names of the species from our previous publications are cited in the tables, and comments are provided on the current taxonomic position of algae
Summary
Information on the marine algae of the Commander Islands is more comprehensive than in other regions of the Russian Pacific. The marine algal flora of the Commander Islands is of more than local interest because at this archipelago the Bering Sea meets the open Pacific Ocean between the Asian and American continents, and so the Islands act as a bridge for species intercontinental migration and exchange due to the system of ocean currents (Figure 1).
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