Changes
On February 28, 2026 at 11:48:05 AM UTC,
Michael van der Laan:
-
No fields were updated. See the metadata diff for more details.
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| 2 | "agreement": "true", | 2 | "agreement": "true", | ||
| 3 | "alternative_identifier": "DOI: 10.4314/wsa.v39i2.18", | 3 | "alternative_identifier": "DOI: 10.4314/wsa.v39i2.18", | ||
| 4 | "author": null, | 4 | "author": null, | ||
| 5 | "author_email": null, | 5 | "author_email": null, | ||
| 6 | "authors": [ | 6 | "authors": [ | ||
| 7 | { | 7 | { | ||
| 8 | "author_department": "Department of Geology, Unit for | 8 | "author_department": "Department of Geology, Unit for | ||
| 9 | Environmental Sciences and Management", | 9 | Environmental Sciences and Management", | ||
| 10 | "author_email": "jan.huizenga@nwu.ac.za", | 10 | "author_email": "jan.huizenga@nwu.ac.za", | ||
| 11 | "author_name": "Jan Marten", | 11 | "author_name": "Jan Marten", | ||
| 12 | "author_organization": "North\u2011West University", | 12 | "author_organization": "North\u2011West University", | ||
| 13 | "author_surname": "Huizenga", | 13 | "author_surname": "Huizenga", | ||
| 14 | "contact_same_as_author": "true" | 14 | "contact_same_as_author": "true" | ||
| 15 | } | 15 | } | ||
| 16 | ], | 16 | ], | ||
| 17 | "citation_title": "HUIZENGA JM, SILBERBAUER M, DENNIS R and DENNIS I | 17 | "citation_title": "HUIZENGA JM, SILBERBAUER M, DENNIS R and DENNIS I | ||
| 18 | (2013) An inorganic water chemistry dataset (1972\u20132011) of | 18 | (2013) An inorganic water chemistry dataset (1972\u20132011) of | ||
| 19 | rivers, dams and lakes in South Africa. Water SA 39 (2) 335\u2013340. | 19 | rivers, dams and lakes in South Africa. Water SA 39 (2) 335\u2013340. | ||
| 20 | http://doi.org/10.4314/wsa.v39i2.18", | 20 | http://doi.org/10.4314/wsa.v39i2.18", | ||
| 21 | "contact_person": [ | 21 | "contact_person": [ | ||
| 22 | { | 22 | { | ||
| 23 | "contact_department": "Department of Geology, Unit for | 23 | "contact_department": "Department of Geology, Unit for | ||
| 24 | Environmental Sciences and Management", | 24 | Environmental Sciences and Management", | ||
| 25 | "contact_email": "jan.huizenga@nwu.ac.za", | 25 | "contact_email": "jan.huizenga@nwu.ac.za", | ||
| 26 | "contact_name": "Jan Marten", | 26 | "contact_name": "Jan Marten", | ||
| 27 | "contact_orgnization": "North\u2011West University" | 27 | "contact_orgnization": "North\u2011West University" | ||
| 28 | } | 28 | } | ||
| 29 | ], | 29 | ], | ||
| 30 | "creator_user_id": "bc28a33f-dc21-4795-a57f-da7cd1aa23ea", | 30 | "creator_user_id": "bc28a33f-dc21-4795-a57f-da7cd1aa23ea", | ||
| 31 | "data_classification": "time series", | 31 | "data_classification": "time series", | ||
| 32 | "data_collection_organization": "Department of Water Affairs / | 32 | "data_collection_organization": "Department of Water Affairs / | ||
| 33 | CSIR", | 33 | CSIR", | ||
| 34 | "data_reference_date": [ | 34 | "data_reference_date": [ | ||
| 35 | { | 35 | { | ||
| 36 | "data_reference_date_from": "1972-01-01", | 36 | "data_reference_date_from": "1972-01-01", | ||
| 37 | "data_reference_date_to": "2011-12-31" | 37 | "data_reference_date_to": "2011-12-31" | ||
| 38 | } | 38 | } | ||
| 39 | ], | 39 | ], | ||
| 40 | "data_structure_category": "structured", | 40 | "data_structure_category": "structured", | ||
| 41 | "dataset_language": "English", | 41 | "dataset_language": "English", | ||
| 42 | "dataset_license_url": | 42 | "dataset_license_url": | ||
| 43 | "https://creativecommons.org/licenses/by-sa/4.0/", | 43 | "https://creativecommons.org/licenses/by-sa/4.0/", | ||
| 44 | "did_author_or_contact_organization_collect_the_data": "false", | 44 | "did_author_or_contact_organization_collect_the_data": "false", | ||
| 45 | "email": "vanderLaanM@arc.agric.za", | 45 | "email": "vanderLaanM@arc.agric.za", | ||
| 46 | "groups": [], | 46 | "groups": [], | ||
| 47 | "id": "46d71914-e4ac-4cf8-9bd8-4d0a430062dc", | 47 | "id": "46d71914-e4ac-4cf8-9bd8-4d0a430062dc", | ||
| 48 | "isopen": false, | 48 | "isopen": false, | ||
| 49 | "keywords": "national data set, inorganic water chemistry, surface | 49 | "keywords": "national data set, inorganic water chemistry, surface | ||
| 50 | waters, rivers, dams, lakes, South Africa", | 50 | waters, rivers, dams, lakes, South Africa", | ||
| 51 | "license": "Open (Creative Commons)", | 51 | "license": "Open (Creative Commons)", | ||
| 52 | "license_id": null, | 52 | "license_id": null, | ||
| 53 | "license_title": null, | 53 | "license_title": null, | ||
| 54 | "maintainer": null, | 54 | "maintainer": null, | ||
| 55 | "maintainer_email": null, | 55 | "maintainer_email": null, | ||
| 56 | "metadata_created": "2026-02-28T11:43:37.389091", | 56 | "metadata_created": "2026-02-28T11:43:37.389091", | ||
| n | 57 | "metadata_modified": "2026-02-28T11:48:05.360491", | n | 57 | "metadata_modified": "2026-02-28T11:48:05.730572", |
| 58 | "minimum_maximum_extent": [ | 58 | "minimum_maximum_extent": [ | ||
| 59 | { | 59 | { | ||
| 60 | "maximum_vertical_extent": "3451", | 60 | "maximum_vertical_extent": "3451", | ||
| 61 | "minimum_vertical_extent": "0" | 61 | "minimum_vertical_extent": "0" | ||
| 62 | } | 62 | } | ||
| 63 | ], | 63 | ], | ||
| 64 | "name": | 64 | "name": | ||
| 65 | chemistry-dataset-1972-2011-of-rivers-dams-and-lakes-in-south-africa", | 65 | chemistry-dataset-1972-2011-of-rivers-dams-and-lakes-in-south-africa", | ||
| 66 | "notes": "The dataset comprised a national collection of inorganic | 66 | "notes": "The dataset comprised a national collection of inorganic | ||
| 67 | surface\u2011water chemistry data for rivers, dams and lakes across | 67 | surface\u2011water chemistry data for rivers, dams and lakes across | ||
| 68 | South Africa. It contained more than 500\u202f000 complete chemical | 68 | South Africa. It contained more than 500\u202f000 complete chemical | ||
| 69 | analyses collected between 1972 and 2011 from over 2\u202f000 | 69 | analyses collected between 1972 and 2011 from over 2\u202f000 | ||
| 70 | monitoring stations operated under the South African National Chemical | 70 | monitoring stations operated under the South African National Chemical | ||
| 71 | Monitoring Programme. The dataset included measured concentrations of | 71 | Monitoring Programme. The dataset included measured concentrations of | ||
| 72 | major ions, pH, electrical conductivity, total alkalinity and total | 72 | major ions, pH, electrical conductivity, total alkalinity and total | ||
| 73 | dissolved solids, together with numerous calculated variables used to | 73 | dissolved solids, together with numerous calculated variables used to | ||
| 74 | assess analytical accuracy and water quality | 74 | assess analytical accuracy and water quality | ||
| 75 | characteristics.\r\n\r\nOriginal data were obtained from the | 75 | characteristics.\r\n\r\nOriginal data were obtained from the | ||
| 76 | Department of Water Affairs and the CSIR, after which the dataset was | 76 | Department of Water Affairs and the CSIR, after which the dataset was | ||
| 77 | extensively processed to remove incomplete analyses and to add derived | 77 | extensively processed to remove incomplete analyses and to add derived | ||
| 78 | parameters such as stoichiometric charge balance, ionic strength, | 78 | parameters such as stoichiometric charge balance, ionic strength, | ||
| 79 | calculated electrical conductivity, total dissolved solids, sodium | 79 | calculated electrical conductivity, total dissolved solids, sodium | ||
| 80 | adsorption ratio and other hydrochemical indicators. These processing | 80 | adsorption ratio and other hydrochemical indicators. These processing | ||
| 81 | steps improved internal consistency and usability for | 81 | steps improved internal consistency and usability for | ||
| 82 | hydrogeochemical, environmental and water\u2011quality | 82 | hydrogeochemical, environmental and water\u2011quality | ||
| 83 | studies.\r\n\r\nThe dataset was organised into user\u2011friendly | 83 | studies.\r\n\r\nThe dataset was organised into user\u2011friendly | ||
| 84 | Excel spreadsheets and included supplementary files describing | 84 | Excel spreadsheets and included supplementary files describing | ||
| 85 | sampling locations, monitoring periods and station metadata. The | 85 | sampling locations, monitoring periods and station metadata. The | ||
| 86 | resulting dataset provided a long\u2011term baseline for assessing | 86 | resulting dataset provided a long\u2011term baseline for assessing | ||
| 87 | spatial and temporal trends in South African surface\u2011water | 87 | spatial and temporal trends in South African surface\u2011water | ||
| 88 | chemistry and supported research, water\u2011resource management and | 88 | chemistry and supported research, water\u2011resource management and | ||
| 89 | quality\u2011control improvements in laboratory analysis.", | 89 | quality\u2011control improvements in laboratory analysis.", | ||
| 90 | "num_resources": 8, | 90 | "num_resources": 8, | ||
| 91 | "num_tags": 0, | 91 | "num_tags": 0, | ||
| 92 | "organization": { | 92 | "organization": { | ||
| 93 | "approval_status": "approved", | 93 | "approval_status": "approved", | ||
| 94 | "created": "2025-12-03T12:47:25.898887", | 94 | "created": "2025-12-03T12:47:25.898887", | ||
| 95 | "description": "The Department of Water and Sanitation is the | 95 | "description": "The Department of Water and Sanitation is the | ||
| 96 | custodian of South Africa's water resources. It is primarily | 96 | custodian of South Africa's water resources. It is primarily | ||
| 97 | responsible for the formulation and implementation of policy governing | 97 | responsible for the formulation and implementation of policy governing | ||
| 98 | this sector.\r\n\r\nWhile striving to ensure that all South Africans | 98 | this sector.\r\n\r\nWhile striving to ensure that all South Africans | ||
| 99 | gain access to clean water and dignified sanitation, the department | 99 | gain access to clean water and dignified sanitation, the department | ||
| 100 | also promotes effective and efficient water resources management to | 100 | also promotes effective and efficient water resources management to | ||
| 101 | ensure sustainable economic and social development.", | 101 | ensure sustainable economic and social development.", | ||
| 102 | "id": "d21c1349-e459-4393-b893-95e35700c6bf", | 102 | "id": "d21c1349-e459-4393-b893-95e35700c6bf", | ||
| 103 | "image_url": "2025-12-03-124725.882101DWS-logo.jpg", | 103 | "image_url": "2025-12-03-124725.882101DWS-logo.jpg", | ||
| 104 | "is_organization": true, | 104 | "is_organization": true, | ||
| 105 | "name": "department-of-water-and-sanitation", | 105 | "name": "department-of-water-and-sanitation", | ||
| 106 | "state": "active", | 106 | "state": "active", | ||
| 107 | "title": "Department of Water and Sanitation", | 107 | "title": "Department of Water and Sanitation", | ||
| 108 | "type": "organization" | 108 | "type": "organization" | ||
| 109 | }, | 109 | }, | ||
| 110 | "owner_org": "d21c1349-e459-4393-b893-95e35700c6bf", | 110 | "owner_org": "d21c1349-e459-4393-b893-95e35700c6bf", | ||
| 111 | "private": false, | 111 | "private": false, | ||
| 112 | "publication_date": "2013-04-01", | 112 | "publication_date": "2013-04-01", | ||
| 113 | "publisher": "Water SA (published by the Water Research | 113 | "publisher": "Water SA (published by the Water Research | ||
| 114 | Commission)", | 114 | Commission)", | ||
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| 338 | "state": "draft", | 335 | "state": "active", | ||
| 339 | "tags": [], | 336 | "tags": [], | ||
| 340 | "title": "An inorganic water chemistry dataset (1972\u20132011) of | 337 | "title": "An inorganic water chemistry dataset (1972\u20132011) of | ||
| 341 | rivers, dams and lakes in South Africa", | 338 | rivers, dams and lakes in South Africa", | ||
| 342 | "type": "dataset", | 339 | "type": "dataset", | ||
| 343 | "uploader_estimation_of_extent_of_processing": "refined", | 340 | "uploader_estimation_of_extent_of_processing": "refined", | ||
| 344 | "url": null, | 341 | "url": null, | ||
| 345 | "version": null, | 342 | "version": null, | ||
| 346 | "vertical_extent_datum": "masl", | 343 | "vertical_extent_datum": "masl", | ||
| 347 | "wrc_project_number": "Not reported in the publication", | 344 | "wrc_project_number": "Not reported in the publication", | ||
| 348 | "wro_theme": "water_quality" | 345 | "wro_theme": "water_quality" | ||
| 349 | } | 346 | } |