期刊
MARINE ENVIRONMENTAL RESEARCH
卷 63, 期 4, 页码 409-427出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2006.10.007
关键词
algae; artificial habitats; coastal structures; grazing molluscs; sessile invertebrates shading; Sydney Harbour; temperature; urbanisation
Worldwide, urbanisation has resulted in extensive replacement of natural habitats with manmade habitats. In Sydney Harbour, Australia, approximately half of the natural foreshore has been replaced by seawalls. Many of these have wharves built over part of their length, which could affect intertidal assemblages on seawalls beneath the wharves. This was tested by sampling and comparing assemblages under and not under wharves in Sydney Harbour. Assemblages differed between the two habitats, with greater cover of macro-algae and abundance of grazing molluscs on seawalls without a wharf and, to a lesser extent, greater cover of sessile invertebrates on seawalls under a wharf. There was, however, considerable spatial variability among locations in composition of assemblages and the species dominating differences between the two habitats. The impact of multiple artificial structures in close proximity and the variability among apparently homogeneous artificial habitats must be considered for the management of urbanised estuaries. (c) 2006 Elsevier Ltd. All rights reserved.
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