English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26999/38800
Visitors : 2398650      Online Users : 90
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46258

Title: Variations of intertidal assemblages and zonation patterns between vertical artificial seawalls and natural rocky shores: a case study from the Victoria Harbour, Hong Kong.
Authors: Nelson W.Y. Lam
Richard Huang
Benny K.K. Chan
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: Artificial habitats
Rocky shores
Date: 2009
Issue Date: 2018-05-14T03:05:59Z
Publisher: Zoological Studies
Abstract: Abstract: Development of coastal cities often results in destruction of natural coastlines, which are consequently replaced by artificial coastal urban structures, commonly including smoothly surfaced vertical seawalls. Artificial seawalls can create novel habitats which may affect the diversity, abundances, and distribution patterns of intertidal assemblages. In the present study, the intertidal assemblages on 3 vertical artificial seawalls and 3 natural rocky shores were studied in Victoria Harbour, Hong Kong. Both artificial seawalls and natural rocky shores shared similar assemblages of common species, but the species abundance and percentage cover of certain taxa differed between the 2 habitat types. Artificial seawalls supported a greater abundance of the chiton Acanthopleura japonica and greater percentage coverage of the oyster Saccostrea cucullata and barnacle Amphibalanus (=Balanus) amphitrite. In contrast, a greater abundance of the false limpet Siphonaria laciniosa and a greater percentage cover of the barnacle Tetraclita squamosa occurred on natural rocky shores. Some species were found exclusively on only one of the habitats. The green mussel Perna viridus, tube worms Hydriodes spp., and sea squirt Styela sp. were only found on artificial seawalls, while the black mussel Septifer virgatus was exclusively recorded on natural rocky shores. Artificial seawalls had different zonation patterns compared to natural rocky shores. The barnacle Tetraclita squamosa and chiton Acanthopleura japonica were commonly low on natural rocky shores but they became abundant on the mid-shore of artificial seawalls. Differences in zonation patterns of species could be due to the vertical orientation of artificial seawalls leading to different temperature and humidity profiles compared to natural rocky shores. Spatial variability of the assemblage structure at the scale of tens of meters was greater on natural rocky shores than on artificial seawalls. Greater horizontal spatial variation in species assemblages on natural rocky shores may be associated with greater habitat diversity (e.g., rock pools, crevices, and vertical and horizontal surfaces) on natural shores than on smooth vertical seawalls.
Relation: 48(2) pp.184-195
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46258
Appears in Collections:[海洋生物研究所] 期刊論文

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback