Nippon Foundation-GEBCO Seabed 2030 Project https://seabed2030.gebco.net/_Item Page Created: 2019-04-03 01:19 Item Page Last Modified: 2025-04-05 20:46Owner: steinmetzt_NIWA

Nippon Foundation-GEBCO Seabed 2030 Project https://seabed2030.gebco.net/_Item Page Created: 2019-04-03 01:19 Item Page Last Modified: 2025-04-05 20:46Owner: steinmetzt_NIWA

The Atlas of Canada's Relief Map shows Canada's relief with a colour ramp of elevation ranges. Colour tints of depth ranges show ocean bathymetry. This map shows the relief of Canada using three different resolutions. Starting with low resolution, as you zoom in, it transitions to medium and then high resolution. The low resolution is derived from the merging of Natural Resources Canada (NRCan) High Resolution Digital Elevation Model (HRDEM) from 2021 and the legacy Canadian Digital Elevation Model (CDEM), 1945-2011, resampled to 804 metres. The medium resolution is the NRCan, Medium Resolution Digital Elevation Model (MRDEM) from 2024, with modifications by the Atlas of Canada for cartographic purposes. The high resolution is NRCan's 2021 HRDEM product with 1 metre pixels. Also included, is a bathymetric layer from GEBCO 2021 (https://download.gebco.net/) resampled to 804 metre pixels. Other sources: Danish Ministry of Climate, Energy and Utilities; Geological Survey of Denmark and Greenland (GEUS) 2021; Government of Iceland; United States. National Geodetic Survey’s Integrated Database, 2021 (https://geodesy.noaa.gov/) All layers have been symbolized to match the Atlas of Canada Relief wall map. Copies of this map may be obtained from authorized map dealers in Canada, USA and abroad. For further information on purchasing the paper map MCR 0101 or downloading the digital version free of charge, go to atlas.gc.ca. Produced by the Canada Centre for Mapping and Earth Observation, Natural Resources Canada. Printed in 2025. ISBN 978-0-660-37948-7 Catalogue No. m57-1/46-2021e Permanent link: https://doi.org/10.4095/pe5mnk08hr Further information on all these maps can be found on the Atlas of Canada web site atlas.gc.ca.

Arctic and North Pacific Ocean Regional Center https://seabed2030.gebco.net/arctic_pacific/_Item Page Created: 2019-04-03 01:14 Item Page Last Modified: 2025-04-05 16:14Owner: steinmetzt_NIWA

Data and code necessary to run the analyses, and reproduce the figures, tables and text results from Morais et al. 'Rethinking Darwin's coral reef paradox', Current Biology.

Compressed folders are:

Allen_coral_atlas: includes two .tiff files, each a 1-km resolution, rasterised buffer (0-5km, 5-10km) processed version of the Allen Coral Atlas 'coral habitat' (i.e., coral/algae + rock);

Book: includes a text version of Charles Darwin's 'The structure and distribution of coral reefs' book published in 1842;

Code: includes all R scripts and extra functions necessary to run the analyses, and reproduce the figures, tables and text results of the paper;

GEBCO_bat: includes a .nc file, a global gridded bathymetry dataset downloaded directly from the GEBCO repository;

In-situ: includes two .csv files, each a dataset of in-situ ocean water chlorophyll-a measurements from a paper (Valente et al 2019 Earth Syst. Sci. Data; and Davies et al 2018 Sci. Data);

MEOW: includes a shapefile with the Marine Ecoregions of the World downloaded directly from the UNEP-WCMC repository;

Primprod: includes four .csv files from two databases and an extra data compilation in this work. Together, these files encompass net primary productivity estimates for a wide variety of terrestrial, freshwater, estuarine and marine ecosystems, including coral reefs;

Outputs: empty folder where figures and tables will be generated;

Outputs_authors: as the name suggests, includes the Outputs as last generated from the uploaded code by the authors on 20 March 2025;

run.R: master script for running all scripts within the Code folder. Running this file automatically loads all data files and executes code that creates and saves figures and tables.

The individual R scripts included are as follows:

01_reading.R: reads Charles Darwin's 'The structure and distribution of coral reefs' using the docx file provided performs topic modelling based on Latent Dirichlet Allocation models. Outputs are not saved outside of the session.

02_aca_reef_modis.R: extracts chlorophyll-a values (Aqua-MODIS, from NASA Ocean Colour) from buffers of Allen Coral Atlas coral habitat distribution, uses GEBCO bathymetry to mask shallow pixels and save near-reef chlorophyll-a data in the coordinate format. Key processed data output.

03_prim_prod.R: consolidates and tidies cross-ecosystem data on net primary productivity from three databases, performs a Bayesian Generalised Linear Model to estimate NPP for key ecosystem types, including multiple comparisons informing the magnitude of differences between ecosystems. Plot and table outputs.

04_oligo_vs_meso.R: analyses global near-reef chlorophyll-a data extracted before, breaking it down by geographical realm and habitat (inshore and offshore); provides plots and indicators of chlorophyll-a concentration across the levels of the variables analysed, including a distribution contrast between chlorophyll-a near-reefs and across tropical oceans more broadly. Key figure and table outputs.

05_in-situ.R: consolidates and tidies in-situ chlorophyll-a data from two databases, extracts data near-reefs and performs a Bayesian Generalised Linear Model to estimate in situ chlorphyll-a for realms and habitats, including multiple comparisons informing the magnitude of differences. Figure output.

06_nutrients.R: extract the concentration of four key nutrients (nitrate, phosphate, iron and silicate) across near-reef cells and for tropical, contrasts ranges of concentration of each nutrient between near-reefs tropical oceans more broadly, including absolute ranges and bivariate density kernel distributions. Key figure outputs.

07_exclude_marginal.R: performs sensitivity analysis excluding provinces and ecoregions where coral reef distribution could in theory be influenced by the occurrence off non-reef habitats in marginal regions. Figure outputs.

layer used within an online viewer application which allows visualisation of the Multibeam Echosounder Swath Coverage as used in the GEBCO 2019 Grid._Item Page Created: 2019-07-22 01:14 Item Page Last Modified: 2025-04-05 21:50Owner: steinmetzt_NIWANZOI_swath_coverageNo data edit dates availableFields: OBJECTID_1