Kōrero: Life in fresh water

Midge larva (4 o 6)

Midge larva

The presence of an organism can be used as an indicator of water quality. Scientists in New Zealand have devised a scale from 1 to 10 to indicate an organism’s sensitivity to water quality. On the scale, 1 equates to a high tolerance of pollution (very poor water). At the other end, 10 equates to a high sensitivity to pollution (pristine water). Midge larvae (Chironomus species) are at 1 on the scale: they tolerate a range of conditions including very poor water quality.

Te whakamahi i tēnei tūemi

Private collection
Photograph by Stephen Moore

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.

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Roger Young, 'Life in fresh water - Invertebrates', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/11632/midge-larva (accessed 28 September 2020)

He kōrero nā Roger Young, i tāngia i te 24 Sep 2007