Benthic macroinvertebrates are small animals without backbones (eg insects and worms). They live on and under submerged logs, rocks, and aquatic plants on the beds of rivers and streams during some part of their life cycle. Macroinvertebrates play a central role in stream ecosystems by feeding on periphyton (algae), macrophytes (aquatic plants), dead leaves and wood, or on each other. A high macroinvertebrate community index (MCI) indicates a high level of river health.
File contains trend statistics and calculation results for the period 2004-2013.
For more information please see:
Larned, S, Snelder, T, Unwin, M, McBride, G, Verburg, P, McMillan, H (2015).Analysis of Water Quality in New Zealand lakes and Rivers: data sources, data sets, assumptions, limitations, methods and results. NIWA Client Report no. CHC2015-033. Available at data.mfe.govt.nz/x/DDui3u from the Ministry for the Environment dataservice.
This dataset relates to the "River water quality: Benthic macroinvertebrates" measure on the Environmental Indicators, Te taiao Aotearoa website.
You may use this work for commercial purposes.
You must attribute the creator in your own works.
|1.||Data quality information for Macroinvertebrate Community Index trends, by monitoring site||187 KB||
|Category||Environmental Reporting > Freshwater > River water quality|
|Columns||field_1, sID, Median, Tau, p, SenSlope, Lci, Uci, IncluZero, NZReach, segXcentroid, segYcentroid, CLIMATE, SRC_OF_FLW, GEOLOGY, LANDCOVER, SoF|
|Services||Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|
|Added||29 Sep 2015|
|Last updated||29 Sep 2015|
|Revisions||7 - Browse all revisions|
|Current revision||Imported on Oct. 19, 2015 from CSV .|