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Single beam sonar reveals the distribution of the eelgrass Zostera marina L. and threats from the green tide algae Chaetomorpha linum K. in Swan-Lake lagoon (China)
Xu, Shuai1,2,3; Xu, Shaochun1,2,3; Zhou, Yi1,2,5; Zhao, Peng4; Yue, Shidong1,2,3; Song, Xiaoyue1,2,3; Zhang, Xiaomei1,2,5; Gu, Ruiting1,2,3; Wang, Peiliang6; Zhang, Yu1,2,3
2019-08-01
Source PublicationMARINE POLLUTION BULLETIN
ISSN0025-326X
Volume145Pages:611-623
Corresponding AuthorZhou, Yi(yizhou@qdio.ac.cn)
AbstractSeagrass meadows are declining at alarming rates globally due to both anthropogenic activities and natural threats. Seagrasses play key ecological roles in coastal ecosystems as primary producers and providers of habitat and environmental structure. Therefore, mapping seagrass beds is indispensable for the effective monitoring and management of coastal vegetated habitats. In contrast to direct sampling techniques and optical remote sensing, active hydroacoustic techniques are relatively inexpensive and efficient for the detection of seagrass. We used a single beam echosounder to detect the spatial and temporal distribution characteristics of the eelgrass Zostera marina L. in an important overwintering habitat for the whooper swan Cygnus cygnus (Swan-Lake lagoon), northern China. We also distinguished echograms of the macroalgae Chaetomorpha linum K. and outlined its threat to seagrass. We also propose a method for calculating the accuracy of interpolation analyses. Results showed that: (1) The distribution of seagrass in Swan Lake varies with seasons, with maximum distribution area in summer. The maximum distribution area of seagrass beds in Swan Lake was 199.09 ha-231.67 ha, accounting for 41.48%-48.26% of the area of Swan Lake; (2) C. linum is a growing threat for seagrass beds of Swan-lake, with distribution area as high as 129.28 ha in May 2018. The invasion and competition by C. linum against seagrass beds could be one of the reasons for the decline in seagrass beds in Swan-Lake; (3) Topo to Raster has the highest interpolation accuracy and is the most conservative among three interpolation methods. Topo to Raster was the most suitable interpolation method for the sonar detection of seagrass beds. The findings may facilitate the application of sonar technology in seagrass monitoring and provide data for the formulation of appropriate seagrass bed management and restoration strategies and policies.
KeywordSingle beam echosounder Mapping Seagrass beds Zostera marina Chaetomorpha linum Green tide macroalgae Swan Lake
DOI10.1016/j.marpolbul.2019.06.022
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41606192/41176140] ; Key Research and Development Program of Shandong Province[2017GHY15111] ; Key Research Project of Frontier Sciences of CAS[QYZDB-SSW-DQC041-1] ; National Science & Technology Basic Work Program[2015FY110600] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606404] ; Creative Team Project of the Laboratory for Marine Ecology and Environmental Science ; Qingdao National Laboratory for Marine Science and Technology[LMEES-CTSP-2018-1] ; Taishan Scholars Program (Distinguished Taishan Scholars)
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEnvironmental Sciences ; Marine & Freshwater Biology
WOS IDWOS:000482493000071
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/162694
Collection海洋生态与环境科学重点实验室
Corresponding AuthorZhou, Yi
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.State Ocean Adm, Inst Oceanog 4, Beihai, Peoples R China
5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
6.Weihai Hongrun Marine S&T Co LTD, Weihai 264200, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xu, Shuai,Xu, Shaochun,Zhou, Yi,et al. Single beam sonar reveals the distribution of the eelgrass Zostera marina L. and threats from the green tide algae Chaetomorpha linum K. in Swan-Lake lagoon (China)[J]. MARINE POLLUTION BULLETIN,2019,145:611-623.
APA Xu, Shuai.,Xu, Shaochun.,Zhou, Yi.,Zhao, Peng.,Yue, Shidong.,...&Zhang, Yu.(2019).Single beam sonar reveals the distribution of the eelgrass Zostera marina L. and threats from the green tide algae Chaetomorpha linum K. in Swan-Lake lagoon (China).MARINE POLLUTION BULLETIN,145,611-623.
MLA Xu, Shuai,et al."Single beam sonar reveals the distribution of the eelgrass Zostera marina L. and threats from the green tide algae Chaetomorpha linum K. in Swan-Lake lagoon (China)".MARINE POLLUTION BULLETIN 145(2019):611-623.
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