KNAW Repository

Coastal microbial mats: the physiology of a small-scale ecosystem

Stal, L.J. (2001) Coastal microbial mats: the physiology of a small-scale ecosystem. South African Journal of Botany, 67, 399-410. ISSN 0254-6299.

[img]PDF - Published Version
Restricted to KNAW only

2144Kb

Official URL: http://www.ajol.info/index.php/sajb/article/view/20455

Abstract

Coastal inter-tidal sandy sediments, salt marshes and mangrove forests often support the development of microbial mats. Microbial mats are complex associations of one or several functional groups of microorganisms and their formation usually starts with the growth of a cyanobacterial population on a solid substrate. They are considered as analogues of fossil Precambrian stromatolites. Primary production by the cyanobacteria fuels the metabolism of sulfate reducing bacteria and the sulfide that they produce is oxidised by anoxygenic phototrophic bacteria and by colorless sulfur bacteria. Growth and metabolism of these microorganisms result in markedly fluctuating vertical gradients of oxygen and sulfide that shift during a day-night cycle. This review discusses the metabolic contributions of the different functional groups of microorganisms and how their joint effort results in the formation of the mat. [KEYWORDS: Sulfate-reducing bacteria; solar lake sinai; cyanobacterial mats; marine-sediments; nitrogen-fixation; thiocapsa- roseopersicina; sheltered beaches; sulfur bacterium; orkney islands; n-2 fixation]

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:11073
Deposited On:24 Nov 2011 01:00
Last Modified:31 Mar 2014 10:05

Repository Staff Only: item control page