Mean fish index of biotic integrity (IBI) scores for all river sites, by decade, 1970-2007

Mean fish index of biotic integrity (IBI) scores for all river sites, by decade, 1970-2007

New Zealand's Environment Reporting Series: The Ministry for the Environment and Statistics New Zealand

Freshwater fish are an important component of freshwater ecosystems and a valued resource for Māori and recreational fishers. The community of fish species found at a site can be affected by changes in catchment land cover and land use, in-stream habitat, fish passages (routes for moving up and down waterways), pests, and contaminants. The fish index of biotic integrity (IBI) is a measure of the condition of fish communities at sites across the country.

This dataset relates to the "Freshwater fish communities" measure on the Environmental Indicators, Te taiao Aotearoa website.

Massey University

Creative Commons Attribution 3.0 New Zealand

Attribution 3.0 New Zealand

http://creativecommons.org/licenses/by/3.0/nz/

National, 1970-2007

https://data.mfe.govt.nz/table/52545-mean-fish-index-of-biotic-integrity-ibi-scores-for-all-river-sites-by-decade-1970-2007/

Dataset

eng-nz

indigenous, biodiversity