Marine trophic index for the Chatham Rise (1992–2014)

Licence

Creative Commons Attribution 3.0 New Zealand

You may use this work for commercial purposes.

You must attribute the creator in your own works.

3907
8
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

The marine trophic index (MTI) measures the changing abundance and diversity of demersal fish species (living and feeding on or near the seabed) in fishery catches. The Chatham Rise has more than 180 species of fish. It is one of the most productive areas of our exclusive economic zone (EEZ) and an important fishing ground. We calculate the Chatham Rise MTI to assess the change in marine ecosystems resulting from fishing and climate variability.
This dataset relates to the "Marine trophic index: Chatham Rise" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52519
Data type Table
Row count 23
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed

Primary productivity - chlorophyll-a anomalies (1997–2014)

Licence

Creative Commons Attribution 3.0 New Zealand

You may use this work for commercial purposes.

You must attribute the creator in your own works.

3870
20
Added
28 Sep 2015

This dataset was first added to MfE Data Service on 28 Sep 2015.

Phytoplankton are primary producers and form the basis of the oceans’ food chains. They contain the pigment chlorophyll-a (chl-a), which they use to create their own food through photosynthesis. We study concentrations of chl-a in phytoplankton to assess primary productivity in our oceans. Changes in productivity are likely to affect food chains and ultimately affect marine biodiversity, including the species we rely on for economic, cultural, or recreational purposes.
This dataset relates to the "Primary productivity" measure on the Environmental Indicators, Te taiao Aotearoa website.

Table ID 52520
Data type Table
Row count 2080
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed