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Authors Matheson, FE; Schwarz, AM
Author Full Name Matheson, F. E.; Schwarz, A.-M.
Title Growth responses of Zostera capricorni to estuarine sediment conditions
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords New Zealand; nitrogen; organic content; phosphorus; seagrass; sulphide
Keywords Plus SEAGRASS MEADOWS; EELGRASS; BIOMASS; PARAMETERS; DYNAMICS; MESOCOSM; SURVIVAL; RELEASE; DENSITY; BEDS
Abstract This study comprised (1) a field survey of intertidal seagrass (Zostera capricorni) biomass, cover and photosynthetic potential and sediment characteristics at a range of contrasting sites in three New Zealand harbours, and (2) a microcosm experiment comparing plant responses to sediments from extant versus historical seagrass sites. The field survey showed that the sediment physico-chemical characteristics were generally consistent with the limited previous reports for Zostera environments, although the total P concentration range was higher (0.08-0.72 mg P g(-1)). Overall, 52% of variation in seagrass cover was explained by sediment water content (R = 0.54) and organic content (R = -0.56). Twenty-two percent of variation in seagrass biomass was explained by sediment total P and redox potential (both R = -0.35). Intra-harbour seagrass-sediment relationships were more significant (explaining up to 82% of plant variation) but harbour-specific. In the microcosm experiment, threefold higher Z capricorni biomass was maintained on extant than historical sediments but not conclusively linked to measure sediment characteristics. Overall, the results of this study demonstrate that significant relations can exist between estuarine sediment conditions and Z capricorni growth responses, and suggest that detrimental change in sediment conditions may be a contributing factor in seagrass decline. (C) 2007 Elsevier B.V. All rights reserved.
Author Address Natl Inst Water & Atmospher Res, Hamilton, New Zealand
Reprint Address Matheson, FE (corresponding author), Natl Inst Water & Atmospher Res, POB 11-115, Hamilton, New Zealand.
E-mail Address f.matheson@niwa.co.nz
ORCID Number Matheson, Fleur/0000-0002-8472-0704
Times Cited 12
Total Times Cited Count (WoS, BCI, and CSCD) 12
Publisher ELSEVIER
Publisher City AMSTERDAM
Publisher Address RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date NOV
Year Published 2007
Volume 87
Issue 4
Beginning Page 299
Ending Page 306
Digital Object Identifier (DOI) 10.1016/j.aquabot.2007.07.002
Page Count 8
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number 227OO
Unique Article Identifier WOS:000250667700006
Plants associated with this reference

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