Possible change in distribution of seaweed, Sargassum horneri, in northeast Asia under A2 scenario of global warming and consequent effect on some fish

Teruhisa Komatsu; Masahiro Fukuda; Atsuko Mikami; Shizuha Mizuno; Attachai Kantachumpoo; Hideaki Tanoue; Michio Kawamiya

doi:10.1016/j.marpolbul.2014.04.032

Possible change in distribution of seaweed, Sargassum horneri, in northeast Asia under A2 scenario of global warming and consequent effect on some fish

Mar Pollut Bull. 2014 Aug 30;85(2):317-24. doi: 10.1016/j.marpolbul.2014.04.032. Epub 2014 May 14.

Authors

Teruhisa Komatsu¹, Masahiro Fukuda², Atsuko Mikami², Shizuha Mizuno², Attachai Kantachumpoo², Hideaki Tanoue², Michio Kawamiya³

Affiliations

¹ Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa 277-8564, Japan. Electronic address: komatsu@aori.u-tokyo.ac.jp.
² Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa 277-8564, Japan.
³ Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25, Showacho, Kanazawaku, Yokohama 236-0001, Japan.

PMID: 24835373
DOI: 10.1016/j.marpolbul.2014.04.032

Abstract

Global warming effects on seaweed beds are already perceptible. Their geographical distributions greatly depend on water temperatures. To predict future geographical distributions of brown alga, Sargassum horneri, forming large beds in the northwestern Pacific, we referred to future monthly surface water temperatures at about 1.1° of longitude and 0.6° of latitude in February and August in 2050 and 2100 simulated by 12 organizations under an A2 scenario of global warming. The southern limit of S. horneri distribution is expected to keep moving northward such that it may broadly disappear from Honshu Island, the Chinese coast, and Korean Peninsula in 2100, when tropical Sargassum species such as Sargassum tenuifolium may not completely replace S. horneri. Thus, their forests in 2100 do not substitute those of S. horneri in 2000. Fishes using the beds and seaweed rafts consisting of S. horneri in East China Sea suffer these disappearances.

Keywords: A2 scenario; Global warming; Northwestern Asia; SST; Sargassum horneri; Seaweed beds and rafts.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Asia
Fishes / physiology*
Global Warming*
Population Dynamics
Sargassum / physiology*
Seawater / chemistry
Temperature