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Wetland food web How do coastal wetlands build food webs?

Trace tides, plants, detritus, microbes, fish, birds, and restoration through the food webs of coastal wetlands.

lessons

~20 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

Water makes a shifting habitatExplain how tides, salinity, channels, and plant structure create connected wetland neighborhoods.Physical gradients and tidal timing determine where organisms can feed, hide, and move.
Plants feed the baseTrace sunlight, plant production, detritus, roots, algae, and tidal export into food-web pathways.Wetland plants support consumers through living tissue, decomposition, belowground production, and export.
Small consumers do the sortingDescribe how microbes, benthic animals, plankton, and grazers process and redistribute food.Small consumers transform material and make energy available to larger animals.
Fish and birds link habitatsConnect wetland prey and shelter to nursery function, edge feeding, shorebird tides, and mobile predators.Fish and birds link wetland production to estuaries and other habitats across life stages and tides.
Networks change under stressEvaluate how habitat loss, pollution, heat, restoration, and monitoring alter food-web links.A functioning food web depends on connected habitat and evidence that transfers persist through change.

Questions this course answers

Why can the same wetland patch be a refuge at one time and a feeding ground later?

Flooding changes access, shelter, and where prey concentrate across the tidal cycle.

Put this habitat connection in order.

Physical gradients and structure shape the places where consumers can feed and hide.

Why is a fallen leaf still part of a food web?

Decomposition changes plant material into resources used by microbes and detritus feeders.

How can a wetland support animals outside the exact patch where plants grew?

Water movement transfers wetland production across habitat boundaries.

What do microbes often contribute to detritus-based feeding?

Microbes make some plant compounds usable and become food for small consumers.

Put a simple mudflat transfer in order.

Small producers and decomposers support benthic consumers that then feed larger animals.

Grounded in trusted sources

U.S. Environmental Protection Agency, About Coastal Wetlands https://www.epa.gov/wetlands/about-coastal-wetlands
NOAA Fisheries, Coastal Wetland Habitat https://www.fisheries.noaa.gov/national/habitat-conservation/coastal-wetland-habitat
U.S. Geological Survey, Wetlands and Estuaries https://www.usgs.gov/science/science-explorer/coasts/wetlands-and-estuaries
U.S. Geological Survey, Food web conceptual model https://www.usgs.gov/publications/food-web-conceptual-model
U.S. Environmental Protection Agency, Why Monitoring of the Great Lakes Coastal Wetlands Is Important https://www.epa.gov/great-lakes-monitoring/why-monitoring-great-lakes-coastal-wetlands-important
Wikimedia Commons MediaWiki API image records https://commons.wikimedia.org/w/api.php

Every Wunder lesson is built from real, reputable sources — never invented.

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