Photosynthetic characteristics of benthic microalgae and seagrass in Lake Illawarra, Australia
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- 作者：Wenchuan Qu ; Chenwei Su ; R.J. West and R.J. Morrison
- 关键词：benthic microalgae ; seagrass ; Lake Illawarra ; P– ; I parameters ; photosynthesis
- 刊名：Hydrobiologia
- 出版时间：March, 2004
- 出版年：2004
- 期刊代码：17_09218971
- 类别：soc
- 卷：515
- 期：1-3
- 页码：147-159
- 数据来源：sp
摘要
Lake Illawarra, is a typical shallow intertidal coastal barrier lagoon in New South Wales, Australia. This paper reports the first examination of photosynthetic characteristics of benthic microalgae and seagrass in this lake by measuring the oxygen exchange procedure (flux) using sediment-core incubations in the laboratory.Photosynthesis vs irradiance relationships (P–I curves) were generated from measurements made at nine irradiances for microphytobenthos (MPB) at five different water depths (sites) during September 2002. Maximum benthic gross primary production (GPmax) for MPB in this lake tended to decrease with the increasing water depth from Site 5 (about 0.2 m deep) to Site 1 (about 3.0 m deep), and was correlated with decreasing surface sediment Chl-a concentrations.