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Organic matter – Pressures

Organic matter – Pressures

Flow chart showing the major elements associated with organic matter management

Click on elements of the flow chart or select from the tabs below

Sources of organic matter:

  • Organic matter enters wetlands from diffuse catchment via local overland surface flow, in floodwaters (overbank flow) or directly from urban and agricultural land use or point sources.
  • Internal production of organic matter from plants and phytoplankton occurs within the system.
  • The clearing of wetland, fringing zone or catchment vegetation, or vegetation loss through poor fire management, can result in increased run-off due to bare ground or decreased organic matter filtering from the incoming waters. Agricultural activities can increase organic matter loads through organic matter run-off (e.g. trash) or livestock faeces.
  • Dense fauna populations (e.g. bird colonies, feral pigs, intensive animal production) can increase organic matter loads directly to wetlands through faeces.
  • Numerous other land-use activities, such as feedlots, aquaculture, forestry, residential housing (e.g. lawn clipping), can be sources of organic matter to wetland.

Last updated: 22 March 2013

This page should be cited as:

Department of Environment, Science and Innovation, Queensland (2013) Organic matter – Pressures, WetlandInfo website, accessed 18 March 2024. Available at:

Queensland Government
WetlandInfo   —   Department of Environment, Science and Innovation