Abstract
Species composition and quantitative distribution of seaweeds on the shelf and continental slope of Primorye in the northwestern Japan Sea (depth 20–750 m) are considered on the data of trawl surveys conducted in 2015–2016. In total, 26 seaweed species were found: 16 Rhodophyta, 7 Phaeophyta, 1 Chlorophyta, and 2 species of sea grass. Most of the species were found on the depth < 60 m where the biomass of seaweeds varied from 44 to 569 kg/km2. On the depth about 100 m, the biomass decreased signifcantly to the value < 36.4 kg/km2, and only single seaweeds were found on the depth > 700 m. There is supposed that the lowest limit of the phytal zone in the northwestern Japan Sea is located at the depth 50–100 m.
Highlights
Species composition and quantitative distribution of seaweeds on the shelf and continental slope of Primorye in the northwestern Japan Sea are considered on the data of trawl surveys conducted in 2015–2016
Most of the species were found on the depth < 60 m where the biomass of seaweeds varied from 44 to 569 kg/km2
On the depth about 100 m, the biomass decreased significantly to the value < 36.4 kg/km2, and only single seaweeds were found on the depth > 700 m
Summary
ВИДОВОЙ СОСТАВ И КОЛИЧЕСТВЕННОЕ РАСПРЕДЕЛЕНИЕ МАКРОФИТОВ В СУБЛИТОРАЛИ И НА МАТЕРИКОВОМ СКЛОНЕ. В северо-западной части Японского моря оценены видовой состав и количественное распределение макрофитов, произрастающих и встречающихся в зоне шельфа и на материковом склоне на глубинах от 20 до 750 м. Kulepanov V.N., Drobyazin E.N. Species composition and quantitative distribution of seaweeds in the sublittoral zone and on the continental slope in the northwestern Japan Sea // Izv. TINRO. Species composition and quantitative distribution of seaweeds on the shelf and continental slope of Primorye in the northwestern Japan Sea (depth 20–750 m) are considered on the data of trawl surveys conducted in 2015–2016. Цель работы — представить видовой состав макрофитов и их количественное распределение по глубинам в нижней зоне сублиторали и на материковом склоне северо-западной части Японского моря. Scheme of trawl surveys in the northwestern Japan Sea Оценивались видовой состав и общая масса макрофитов в трале. Для анализа и обработки данных использовали программы «Statistica 6.0», «Excel-2007» и «MapInfo Professional 12.0»
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