Story: Estuaries

Estuary food web

Estuary food web

Estuary food webs begin with the conversion of the sun’s energy to food energy by plants and plankton. Simplified feeding relationships are shown in this diagram.There are two main feeding pathways. One begins with large plants such as mangroves, seagrass and rushes. When they die their leaves and roots are broken down by bacteria and fungi to become detritus. Detritus is eaten by small animals such as snails, worms and shellfish and they, in turn, are eaten by larger creatures such as fish and birds. A second pathway begins with microscopic phytoplankton. They are eaten by tiny zooplankton which then become food for snails and shellfish.

About this item

Te Ara - The Encyclopedia of New Zealand
Artwork by Bruce Mahalski

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

All images & media in this story

How to cite this page:

Maggy Wassilieff, 'Estuaries - The estuary ecosystem', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/diagram/4620/estuary-food-web (accessed 25 March 2017)

Story by Maggy Wassilieff, published 12 Jun 2006