Characteristics of Algal Succession Following Rock Scraping at Imwon Area in the East Coast of Korea  

作　　者：Young Dae Kim Jung Kwan Alan Myung Mo Nam Chu Lee Hyun Il Yoo Su Yeoung Yeon Young Hwan Kim Jang Kyun Kim Jae Suk Choi Young Dae Kim;Jung Kwan Alan;Myung Mo Nam;Chu Lee;Hyun Il Yoo;Su Yeoung Yeon;Young Hwan Kim;Jang Kyun Kim;Jae Suk Choi(East Sea Fisheries Research Institute, National Fisheries Research & Development Institute, Gangneung 210-860,Republic of Korea;Korea National Park Service, National Park Research Institute, Yeosu 550-833, Republic of Korea;Seaweed Research Center, 1rational Fisheries Research & Development lnstituie, Mokpo 530-831, Republic of Korea;Department of Biology, Chungbuk National University, Chongju 361-763, Republic Of Korea;Department of Marine Science, School of Natural Sciences, Incheon National University, 22012, Yeonsu-gu, Incheon, Korea;Department of Marine Sciences, University of Connecticut 06901, Stamford ,Connecticut, USA;Division of Bioindustry, Silla University, Sasang-gu, Busan 617-736, Republic of Korea)

机构地区：[1]East Sea Fisheries Research Institute, National Fisheries Research & Development Institute, Gangneung 210-860,Republic of Korea [2]Korea National Park Service, National Park Research Institute, Yeosu 550-833, Republic of Korea [3]Seaweed Research Center, 1rational Fisheries Research & Development lnstituie, Mokpo 530-831, Republic of Korea [4]Department of Biology, Chungbuk National University, Chongju 361-763, Republic Of Korea [5]Department of Marine Science, School of Natural Sciences, Incheon National University, 22012, Yeonsu-gu, Incheon, Korea [6]Department of Marine Sciences, University of Connecticut 06901, Stamford ,Connecticut, USA [7]Division of Bioindustry, Silla University, Sasang-gu, Busan 617-736, Republic of Korea

出　　处：《Journal of Ocean University of China》2016年第6期1087-1093,共7页中国海洋大学学报（英文版）

基　　金：supported by a grant from the NIFS Fisheries Research Project ‘Development for Coast-Specific IMTA Technology (R2016015)’, Republic of Korea

摘　　要：Abstract This study was conducted to clarify the characteristics high-pressure water sprayer in the period from June 2010 to April 2011 of algal succession following rock scraping using hoe or We divided the research area off the eastern coast of Korean near Imwon into 3 categories depending upon the severity of the barren ground, i.e., the urchin barren-affected, urchin bar- ren-ongoing and urchin barren-free areas. In April 2011, in the urchin barren-affected area with 25 seaweed species, the cover per- centage and importance value （IV） of erustose coralline algae were higher than those of other species. In the urchin barren-ongoing area with 33 seaweed species, crustose coralline algae （mean IV=62%） as well as Sargassum sp. （mean IV=28%）, and Gelidium amansii （mean IV= 19%） were observed following rock scraping. In the urchin barren-free area where seaweed communities were relatively abundant with 42 species, a variety of algal species including G. amansii （mean IV = 32%） underwent algal succession. Overall, it was observed that, as an aspect of algal succession, the weaker the barren ground severity was, the more frequent and di- verse the seaweeds were, and the more complex the succession pattern was in the study. As an aspect of recovering algal community, rock scraping using hoe was shown to be superior to the method using high-pressure water spraying. Therefore, we conclude that rock scraping using hoe is a very effective strategy for recovering the algal community in urchin barren-ongoing area.This study was conducted to clarify the characteristics of algal succession following rock scraping using hoe or high-pressure water sprayer in the period from June 2010 to April 2011. We divided the research area off the eastern coast of Korean near Imwon into 3 categories depending upon the severity of the barren ground, i.e., the urchin barren-affected, urchin barren-ongoing and urchin barren-free areas. In April 2011, in the urchin barren-affected area with 25 seaweed species, the cover percentage and importance value(IV) of crustose coralline algae were higher than those of other species. In the urchin barren-ongoing area with 33 seaweed species, crustose coralline algae(mean IV = 62%) as well as Sargassum sp.(mean IV = 28%), and Gelidium amansii(mean IV = 19%) were observed following rock scraping. In the urchin barren-free area where seaweed communities were relatively abundant with 42 species, a variety of algal species including G. amansii(mean IV = 32%) underwent algal succession. Overall, it was observed that, as an aspect of algal succession, the weaker the barren ground severity was, the more frequent and diverse the seaweeds were, and the more complex the succession pattern was in the study. As an aspect of recovering algal community, rock scraping using hoe was shown to be superior to the method using high-pressure water spraying. Therefore, we conclude that rock scraping using hoe is a very effective strategy for recovering the algal community in urchin barren-ongoing area.

关 键 词：algal succession sea-urchin barren ground rock scraping subtidal zone 

分 类 号：Q948.8[生物学—植物学]