E-Thesis 437 views 214 downloads
Camera methods for the assessment of coastal biodiversity in low visibility environments / ROBYN JONES
Swansea University Author: ROBYN JONES
DOI (Published version): 10.23889/SUthesis.57242
Abstract
Coastal marine environments are important ecological, economic and social areas providing valuable services such as coastal protection, areas of recreation and tourism, fishing, climate regulation, biotic materials and biofuels. Marine renewable energy developments in the coastal environment are bec...
Published: |
Swansea
2021
|
---|---|
Institution: | Swansea University |
Degree level: | Doctoral |
Degree name: | Ph.D |
Supervisor: | Unsworth, Richard ; Griffin, Ross |
URI: | https://cronfa.swan.ac.uk/Record/cronfa57242 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
first_indexed |
2021-06-29T13:53:17Z |
---|---|
last_indexed |
2021-06-30T03:23:49Z |
id |
cronfa57242 |
recordtype |
RisThesis |
fullrecord |
<?xml version="1.0"?><rfc1807><datestamp>2021-06-29T15:49:43.1581130</datestamp><bib-version>v2</bib-version><id>57242</id><entry>2021-06-29</entry><title>Camera methods for the assessment of coastal biodiversity in low visibility environments</title><swanseaauthors><author><sid>6b13e2119afe893ffef0c2f926353436</sid><firstname>ROBYN</firstname><surname>JONES</surname><name>ROBYN JONES</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2021-06-29</date><abstract>Coastal marine environments are important ecological, economic and social areas providing valuable services such as coastal protection, areas of recreation and tourism, fishing, climate regulation, biotic materials and biofuels. Marine renewable energy developments in the coastal environment are becoming a key objective for many countries globally. Assessing and monitoring the impacts of these developments on features, such as coastal biodiversity, becomes a difficult prospect in these environments due to the complexity of marine process at the locations in which these developments are targeted. This thesis explores the main challenges faced when assessing biodiversity in dynamic coastal environments, in particular those susceptible to high levels of turbidity. Various underwater camera techniques were trialled in reduced visibility environments including baited remote underwater video (BRUV), drop-down video and hydroacoustic methods. This research successfully refined BRUV guidelines in the North-East Atlantic region and identified key methodological and environmental factors influencing data collected BRUV deployments. Key findings included mackerel as the recommended bait type in this region and highlighting the importance of collecting consistent metadata when using these methods. In areas of high turbidity, clear liquid optical chambers (CLOCs) were successfully used to enhance the quality of information gathered using underwater cameras when monitoring benthic fauna and fish assemblages. CLOCs were applied to both conventional BRUV camera systems and benthic drop-down camera systems. Improvements included image quality, species and habitat level identification, and taxonomic richness. Evaluations of the ARIS 3000 imaging sonar and its capability of visualising distinguishing identifying features in low visibility environments for motile fauna showed mixed results with morphologically distinct species such as elasmobranchs much clearer in the footage compared to individuals belonging to finfish families. A combined approach of optical and hydroacoustic camera methods may be most suitable for adequately assessing coastal biodiversity in low visibility environments.</abstract><type>E-Thesis</type><journal/><volume/><journalNumber/><paginationStart/><paginationEnd/><publisher/><placeOfPublication>Swansea</placeOfPublication><isbnPrint/><isbnElectronic/><issnPrint/><issnElectronic/><keywords/><publishedDay>1</publishedDay><publishedMonth>5</publishedMonth><publishedYear>2021</publishedYear><publishedDate>2021-05-01</publishedDate><doi>10.23889/SUthesis.57242</doi><url/><notes>ORCiD identifier https://orcid.org/0000-0001-9854-2294</notes><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><supervisor>Unsworth, Richard ; Griffin, Ross</supervisor><degreelevel>Doctoral</degreelevel><degreename>Ph.D</degreename><degreesponsorsfunders>Knowledge Economy Skills Scholarships (KESS) and SEACAMS 2</degreesponsorsfunders><apcterm/><lastEdited>2021-06-29T15:49:43.1581130</lastEdited><Created>2021-06-29T14:49:16.4286827</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Biosciences, Geography and Physics - Biosciences</level></path><authors><author><firstname>ROBYN</firstname><surname>JONES</surname><order>1</order></author></authors><documents><document><filename>57242__20298__9a82cd7c8a46479eaddc0b1cbf741847.pdf</filename><originalFilename>Jones_Robyn_E_PhD_Thesis_Final_Redacted_Signature.pdf</originalFilename><uploaded>2021-06-29T15:23:26.6559690</uploaded><type>Output</type><contentLength>56119078</contentLength><contentType>application/pdf</contentType><version>E-Thesis – open access</version><cronfaStatus>true</cronfaStatus><documentNotes>Copyright: The author, Robyn Elizabeth Jones, 2021.</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807> |
spelling |
2021-06-29T15:49:43.1581130 v2 57242 2021-06-29 Camera methods for the assessment of coastal biodiversity in low visibility environments 6b13e2119afe893ffef0c2f926353436 ROBYN JONES ROBYN JONES true false 2021-06-29 Coastal marine environments are important ecological, economic and social areas providing valuable services such as coastal protection, areas of recreation and tourism, fishing, climate regulation, biotic materials and biofuels. Marine renewable energy developments in the coastal environment are becoming a key objective for many countries globally. Assessing and monitoring the impacts of these developments on features, such as coastal biodiversity, becomes a difficult prospect in these environments due to the complexity of marine process at the locations in which these developments are targeted. This thesis explores the main challenges faced when assessing biodiversity in dynamic coastal environments, in particular those susceptible to high levels of turbidity. Various underwater camera techniques were trialled in reduced visibility environments including baited remote underwater video (BRUV), drop-down video and hydroacoustic methods. This research successfully refined BRUV guidelines in the North-East Atlantic region and identified key methodological and environmental factors influencing data collected BRUV deployments. Key findings included mackerel as the recommended bait type in this region and highlighting the importance of collecting consistent metadata when using these methods. In areas of high turbidity, clear liquid optical chambers (CLOCs) were successfully used to enhance the quality of information gathered using underwater cameras when monitoring benthic fauna and fish assemblages. CLOCs were applied to both conventional BRUV camera systems and benthic drop-down camera systems. Improvements included image quality, species and habitat level identification, and taxonomic richness. Evaluations of the ARIS 3000 imaging sonar and its capability of visualising distinguishing identifying features in low visibility environments for motile fauna showed mixed results with morphologically distinct species such as elasmobranchs much clearer in the footage compared to individuals belonging to finfish families. A combined approach of optical and hydroacoustic camera methods may be most suitable for adequately assessing coastal biodiversity in low visibility environments. E-Thesis Swansea 1 5 2021 2021-05-01 10.23889/SUthesis.57242 ORCiD identifier https://orcid.org/0000-0001-9854-2294 COLLEGE NANME COLLEGE CODE Swansea University Unsworth, Richard ; Griffin, Ross Doctoral Ph.D Knowledge Economy Skills Scholarships (KESS) and SEACAMS 2 2021-06-29T15:49:43.1581130 2021-06-29T14:49:16.4286827 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences ROBYN JONES 1 57242__20298__9a82cd7c8a46479eaddc0b1cbf741847.pdf Jones_Robyn_E_PhD_Thesis_Final_Redacted_Signature.pdf 2021-06-29T15:23:26.6559690 Output 56119078 application/pdf E-Thesis – open access true Copyright: The author, Robyn Elizabeth Jones, 2021. true eng |
title |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
spellingShingle |
Camera methods for the assessment of coastal biodiversity in low visibility environments ROBYN JONES |
title_short |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
title_full |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
title_fullStr |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
title_full_unstemmed |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
title_sort |
Camera methods for the assessment of coastal biodiversity in low visibility environments |
author_id_str_mv |
6b13e2119afe893ffef0c2f926353436 |
author_id_fullname_str_mv |
6b13e2119afe893ffef0c2f926353436_***_ROBYN JONES |
author |
ROBYN JONES |
author2 |
ROBYN JONES |
format |
E-Thesis |
publishDate |
2021 |
institution |
Swansea University |
doi_str_mv |
10.23889/SUthesis.57242 |
college_str |
Faculty of Science and Engineering |
hierarchytype |
|
hierarchy_top_id |
facultyofscienceandengineering |
hierarchy_top_title |
Faculty of Science and Engineering |
hierarchy_parent_id |
facultyofscienceandengineering |
hierarchy_parent_title |
Faculty of Science and Engineering |
department_str |
School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences |
document_store_str |
1 |
active_str |
0 |
description |
Coastal marine environments are important ecological, economic and social areas providing valuable services such as coastal protection, areas of recreation and tourism, fishing, climate regulation, biotic materials and biofuels. Marine renewable energy developments in the coastal environment are becoming a key objective for many countries globally. Assessing and monitoring the impacts of these developments on features, such as coastal biodiversity, becomes a difficult prospect in these environments due to the complexity of marine process at the locations in which these developments are targeted. This thesis explores the main challenges faced when assessing biodiversity in dynamic coastal environments, in particular those susceptible to high levels of turbidity. Various underwater camera techniques were trialled in reduced visibility environments including baited remote underwater video (BRUV), drop-down video and hydroacoustic methods. This research successfully refined BRUV guidelines in the North-East Atlantic region and identified key methodological and environmental factors influencing data collected BRUV deployments. Key findings included mackerel as the recommended bait type in this region and highlighting the importance of collecting consistent metadata when using these methods. In areas of high turbidity, clear liquid optical chambers (CLOCs) were successfully used to enhance the quality of information gathered using underwater cameras when monitoring benthic fauna and fish assemblages. CLOCs were applied to both conventional BRUV camera systems and benthic drop-down camera systems. Improvements included image quality, species and habitat level identification, and taxonomic richness. Evaluations of the ARIS 3000 imaging sonar and its capability of visualising distinguishing identifying features in low visibility environments for motile fauna showed mixed results with morphologically distinct species such as elasmobranchs much clearer in the footage compared to individuals belonging to finfish families. A combined approach of optical and hydroacoustic camera methods may be most suitable for adequately assessing coastal biodiversity in low visibility environments. |
published_date |
2021-05-01T04:12:49Z |
_version_ |
1763753873772642304 |
score |
11.0241995 |