Cover Image

Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters

The aim of this study is to ascertain the possible effects of coastal land reclamation and development on existing seagrass spatial distribution of Halophila ovalis and Halophila beccarii surrounding a man-made islet within Penang waters. The hypothesis was that coastal land reclamation and devel...

Full description

Saved in:
Bibliographic Details
Main Authors: Abdullah, Anisah Lee, Anscelly, Anastacia Amanda
Format: Conference or Workshop Item
Language:English
Published: 2015
Subjects:
H Social Sciences (General)
Online Access:http://eprints.usm.my/35135/1/PPIK32.pdf
http://eprints.usm.my/35135/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.usm.eprints.35135
record_format eprints
spelling my.usm.eprints.35135 http://eprints.usm.my/35135/ Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters Abdullah, Anisah Lee Anscelly, Anastacia Amanda H Social Sciences (General) The aim of this study is to ascertain the possible effects of coastal land reclamation and development on existing seagrass spatial distribution of Halophila ovalis and Halophila beccarii surrounding a man-made islet within Penang waters. The hypothesis was that coastal land reclamation and development has a negative effect on existing seagrass distribution and density. The ArcGIS 10 spatial analysis tools, Standard Deviational Ellipse (SDE) and Standard Distance (SD), were applied to determine phase shifts as an indicator of possible effect of coastal land reclamation on the seagrass distribution. Seagrass shoot densities data used were from year 2003, 2006 and 2009; where 2003 and 2006 represented pre-coastal development period, while 2009 represented on-going coastal development period. Results showed SDE of seagrass experienced shifts from west to north-west direction from 2003 to 2009, which is away from the coastal land reclamation site. In addition, SD result showed seagrass distribution in the islet had shifted from west to east, and was more compacted and concentrated in 2009. The shifts of seagrass mean centre from west to the east also coincided with SD analysis where the largest distance value of 28.21m calculated from centroid occurred in 2009. The shifts in seagrass SDE, SD and mean centres strengthened the hypothesis that the coastal land reclamation and development had a negative effect on seagrass spatial distribution and density in Penang waters. The directional trend, compactness and mean centre of seagrass observed to be directed away and concentrated further from the coastal development site by 2009. 2015-08 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.usm.my/35135/1/PPIK32.pdf Abdullah, Anisah Lee and Anscelly, Anastacia Amanda (2015) Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters. In: International Conference on Development and Socio Spatial Inequalities 2015, 19 – 20 August 2015, Pulau Pinang, Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic H Social Sciences (General)
spellingShingle H Social Sciences (General)
Abdullah, Anisah Lee
Anscelly, Anastacia Amanda
Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
description The aim of this study is to ascertain the possible effects of coastal land reclamation and development on existing seagrass spatial distribution of Halophila ovalis and Halophila beccarii surrounding a man-made islet within Penang waters. The hypothesis was that coastal land reclamation and development has a negative effect on existing seagrass distribution and density. The ArcGIS 10 spatial analysis tools, Standard Deviational Ellipse (SDE) and Standard Distance (SD), were applied to determine phase shifts as an indicator of possible effect of coastal land reclamation on the seagrass distribution. Seagrass shoot densities data used were from year 2003, 2006 and 2009; where 2003 and 2006 represented pre-coastal development period, while 2009 represented on-going coastal development period. Results showed SDE of seagrass experienced shifts from west to north-west direction from 2003 to 2009, which is away from the coastal land reclamation site. In addition, SD result showed seagrass distribution in the islet had shifted from west to east, and was more compacted and concentrated in 2009. The shifts of seagrass mean centre from west to the east also coincided with SD analysis where the largest distance value of 28.21m calculated from centroid occurred in 2009. The shifts in seagrass SDE, SD and mean centres strengthened the hypothesis that the coastal land reclamation and development had a negative effect on seagrass spatial distribution and density in Penang waters. The directional trend, compactness and mean centre of seagrass observed to be directed away and concentrated further from the coastal development site by 2009.
format Conference or Workshop Item
author Abdullah, Anisah Lee
Anscelly, Anastacia Amanda
author_facet Abdullah, Anisah Lee
Anscelly, Anastacia Amanda
author_sort Abdullah, Anisah Lee
title Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
title_short Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
title_full Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
title_fullStr Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
title_full_unstemmed Application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass Halophila ovalis and Halophila becarrii distributions in Penang waters
title_sort application of spatial analysis in assessing the effect of coastal land reclamation and development on seagrass halophila ovalis and halophila becarrii distributions in penang waters
publishDate 2015
url http://eprints.usm.my/35135/1/PPIK32.pdf
http://eprints.usm.my/35135/
_version_ 1643708408265703424
score 13.211869

Similar Items