Data - Page 3

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Calculated from the NZEnvDS variable “elevation” using the terrain function in the raster R package (Hijmans 2017). Calculated as the difference between the maximum and the minimum value of a cell and its eight surrounding cells.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Calculated from the NZEnvDS variable “elevation” using the terrain function in the raster R package (Hijmans 2017). Calculated as the difference between the value of a cell and the mean value of its eight surrounding cells.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. The normalised difference between the slope height and valley depth, indicating the relative position of a pixel along a slope between valley and ridge. Calculated from the NZEnvDS “elevation” DEM and the SAGA Morphometry module in SAGA GIS version 7.3.0.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Generating using a geomorphon algorithm, which uses pattern recognition concepts to classify terrain based on a DEM. Individual pixels are allocated to one of the following 10 values:

1. flat
2. summit
3. ridge
4. shoulder
5. spur
6. slope
7. hollow
8. footslope
9. valley
10. depression.

Generated using r.geomorphon (Jasiewicz et al. 2013; Jasiewicz & Stepinski 2013) in GRASS GIS (Neteler et al. 2012). The NZEnvDS variable “elevation” was used as the DEM input.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. The ‘flow direction’ of water (i.e. the direction of the greatest drop in elevation). Calculated from “elevation” using the terrain function in the raster R package (Hijmans 2017). topo_flowDir values are encoded as powers of 2 (0 to 7). The cell to the right of the focal cell 'x' is 1, the one below that is 2, and so on (Hijmans 2017):

32 64 128

16 x 1

8 4 2

Please cite the original paper as attribution when using these layers.

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New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Calculated using the source monthly LENZ temperature layers for the years 1950–1980 (Leathwick et al. 2002) and the biovars function in the dismo R package (Hijmans et al. 2017), based on the standard deviation of monthly temperature means.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Indicates the degree to which winter temperatures deviate from the winter temperature expected given the mean annual temperature. This provides a measure of continentality, with high values in oceanic settings and low values in continental settings (see the following for examples of their use: Leathwick 2001; Leathwick et al. 2005; Leathwick et al. 2006). This layer has the advantage that its correlation with some other commonly used temperature variables (e.g. mean annual temperature) is low (Appendix S2) so can be used together with other temperature variables in a model without confounding their relative effects (Leathwick 1995). Calculated as (from Leathwick 2001): where J is the mean minimum July temperature, T is the mean annual temperature etc, using the LENZ temperature layers for the years 1950–1980 (Leathwick et al. 2002).

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Generated as part of LENZ for the years 1950–1980 (Leathwick et al. 2002). This layer was originally called “Mean minimum temperature of the coldest month” in LENZ, but a name close to this is used for a similar BIOCLIM variable (bio6), above, so it is renamed here.

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Calculated using the source monthly LENZ temperature layers for the years 1950–1980 (Leathwick et al. 2002) and the biovars function in the dismo R package (Hijmans et al. 2017).

Please cite the original paper as attribution when using these layers.

New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. Calculated using the source monthly LENZ temperature layers for the years 1950–1980 (Leathwick et al. 2002) and the biovars function in the dismo R package (Hijmans et al. 2017).

Please cite the original paper as attribution when using these layers.