Datasets

We provide a description of each dataset that we ingested into the NZODN database.

Benthic I - Chattham Sound

The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. (source)

Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity. (source)

Notes:

  • benthic biodiversity relates to species and their habitat

  • statistical modeling on the likelihood of a taxon being in its habitat

  • zip file

  • display bounding box only on the map

  • bounding box crosses the 180 degree line

Links:

Benthic II - Chatham Sound and Campbell Plateau

See Benthic I for more information.

Details:

  • See Benthic I.

Links:

Chemical Analysis

The New Zealand offshore seabed hosts diverse resources including phosphate rich rocks. Phosphate rock deposits on the Chatham Rise have been the focus of previous investigations into their composition and mining potential; however, the diversity of the geochemistry of phosphate deposits, including their wider distribution beyond the Chatham Rise, their trace metal budget, and potential for ecotoxicity, remain poorly characterised. This study addresses some of these gaps by presenting a geochemical investigation, including trace metals, for a range of phosphate nodules from across the Chatham Rise, Bollons Seamount and offshore southeastern South Island. Elutriate and reconnaissance bioaccumulation experiments provide insights into the potential for ecotoxic trace metal release and effects on biota should sediment disturbance through mining activities occur. (source)

Details:

  • NZ Phophorite Geochemistry readings.

  • The data is an XSLX file that has been transposed into a CSV file.

  • Each row contains a station, coordinates and its respective measurements.

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CTD

A CTD device’s primary function is to detect how the conductivity and temperature of the water column changes relative to depth. Conductivity is a measure of how well a solution conducts electricity and it is directly related to salinity. By measuring the conductivity of seawater, the salinity can be derived from the temperature and pressure of the same water. The depth is then derived from the pressure measurement by calculating the density of water from the temperature and the salinity. (source)

Notes:

  • Conductivity, Temperature and Depth

  • a proxy for the salinity of water

  • this is generated on a on-going basis

  • uses cron jobs to ingest the data each day

Links:

  • TODO

Oceanographic

Notes:

  • TODO

Links: