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The percent mud layers for the region were developed from >30,000 raw sediment sample data compiled in dbseabed (Jenkins et al. 1997), which were then imported into ArcGIS and interpolated using Inverse Distance Weighting (Bostock, pers comm) |
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The percent mud layers for the region were developed from >30,000 raw sediment sample data compiled in dbseabed (Jenkins et al. 1997), which were then imported into ArcGIS and interpolated using Inverse Distance Weighting (Bostock, pers comm) |
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NIWA |
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<DIV STYLE="text-align:Left;font-size:12pt"><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Muddy sea floor makes up the largest habitat on Earth. Mud is a relatively fine sediment (grainsize of</SPAN></SPAN><SPAN><SPAN> <63 μm</SPAN></SPAN><SPAN>) and tends to accumulate in areas of low hydrodynamic flow and become dominated by tube dwellers and burrowing species with other species living on or just above the surface of the mud. Many of these feed on organic material and microscopic organisms living within the sediment. Depending on sediment grain size, mud can become anoxic below the top 1-2 cm. Mud is associated with several key biogenic species such as mangroves and seagrass in the intertidal, and subtidal algal meadows, tubeworms, sea pens and Xenophyophores. The percent mud layers for the region were developed from >30,000 raw sediment sample data and compiled (Jenkins et al. 1997), then imported into ArcGIS and interpolated using Inverse Distance Weighting (Bostock et al., 2019). </SPAN></P><P><SPAN><SPAN>Bostock, H., C. Jenkins, K. Mackay, L. Carter, S. Nodder, A. Orpin, A. Pallentin, and R. Wysoczanski. 2019. Distribution of surficial sediments in the ocean around New Zealand/Aotearoa. Part A: continental slope and deep ocean. New Zealand Journal of Geology and Geophysics </SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>62</SPAN></SPAN><SPAN><SPAN>:1-23.</SPAN></SPAN></P><P><SPAN><SPAN /></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Bostock, H., C. Jenkins, K. Mackay, L. Carter, S. Nodder, A. Orpin, A. Pallentin, and R. Wysoczanski. 2019. Distribution of surficial sediments in the ocean around New Zealand/Aotearoa. Part B: continental shelf. New Zealand Journal of Geology and Geophysics </SPAN></SPAN><SPAN STYLE="font-weight:bold;"><SPAN>62</SPAN></SPAN><SPAN><SPAN>:24-45. </SPAN></SPAN><A href="https://www.tandfonline.com/doi/full/10.1080/00288306.2018.1523199" STYLE="text-decoration:underline;"><SPAN STYLE="text-decoration:underline;"><SPAN>https://www.tandfonline.com/doi/full/10.1080/00288306.2018.1523199</SPAN></SPAN></A></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Jenkins CJ. 1997. Building offshore soils databases. Sea Technology. 38(12):25–28.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN /></P></DIV> |
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<DIV STYLE="text-align:Left;font-size:12pt"><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Seafloor sediments will continually be in a state of flux due to floods, storms, earthquakes, volcanic and human activities, however these maps have been developed from a large number of samples (over 23,000) over a relatively long time frame (over 60 years), though some regions remain under-sampled and are therefore less well characterised, particularly the continental shelf regions of East Cape, southern Wairarapa, Fiordland and the west coast of the South Island (Bostock et al., 2019b). Key issues are lack of sampling data in many regions of the EEZ, and extrapolation outward from solitary point records for a large portion of the EEZ (Bostock 2019a).</SPAN></SPAN></P></DIV> |
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Mud |
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["Sediment classification","mud content","mud","marine environment"] |
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en-NZ |
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0 |
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