Living things (biotic): harakeke, grasses, pūriri tree, tūī, kererū, caterpillars, wētā, fungi

Non-living conditions (abiotic): sunlight, water, air, soil, temperature

After heavy rain, muddy water flows from a bare track into the stream.

The pūriri tree provides flowers, fruit and shelter. Tūī visit its flowers; kererū eat its fruit.

Food-web relationships: harakeke and grasses provide food for caterpillars; tūī eat caterpillars. Fungi break down dead plant and animal matter, returning nutrients to the soil.