Changes

On February 28, 2026 at 11:38:05 AM UTC, Michael van der Laan:

Moved Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa from organization Water Research Observatory to organization University of Cape Town

Removed maintainer from Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Removed maintainer email from Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Removed author from Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Updated description of Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa from
Auto-imported dataset for geographical-trends-in-water-chemistry-of-wetlands-in-western-cape-south-africa
to
The dataset contained major‑ion water chemistry data from wetlands located in the South‑Western Cape Province of South Africa. The data were originally collected during the late 1980s as part of a wetlands research project managed by the Freshwater Research Unit at the University of Cape Town. The study investigated whether geographical patterns existed in the major‑ion chemistry of wetland waters by analysing ionic concentrations and visualising their relationships using Maucha ionic diagrams. Water chemistry measurements included major cations and anions, together with supporting physicochemical variables such as temperature, conductivity, salinity, pH, total dissolved solids and nutrients. The dataset was stored in a fixed‑width ASCII file (CHEMDATA.DAT) and later re‑analysed for reproducibility as part of the ReScience challenge. The reproduced analysis demonstrated the continued usability of historical environmental datasets and illustrated long‑term value for assessing wetland condition and baseline water chemistry in the Western Cape region. The dataset served as a historical baseline for subsequent studies on wetland change and water quality trends and supported spatial interpretation of hydrochemical variability across wetlands within the study region.

Changed value of field authors to [{'author_department': '', 'author_email': 'Michael.Silberbauer@gmail.com', 'author_name': 'Michael', 'author_organization': 'Department of Water and Sanitation, Resource Quality Information Services, Pretoria, South Africa / Freshwater Research Unit (FRU), University of Cape Town', 'author_surname': 'Silberbauer', 'contact_same_as_author': 'True'}] in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field publisher to ReScience C / Zenodo in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field publication_date to 2020-08-22 in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field spatial to {"type": "Polygon", "coordinates": [[[18.2, -31.8], [21.5, -31.8], [21.5, -34.8], [18.2, -34.8], [18.2, -31.8]]]} in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field wro_theme to water_quality in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field keywords to Wetlands, Water chemistry, Major ions, Maucha diagrams, Western Cape, South Africa, Hydrochemistry in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Changed value of field data_collection_organization to University of Cape Town in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

Removed the following fields from Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa
- Dataset language
- topic

Uploaded a new file to resource swcape_wetlands_king_silberbauer_1991_id_1ac3ca2c-638d-4f4f-89c0-2088b3de4765.xlsx in Geographical Trends In Water Chemistry Of Wetlands In Western Cape South Africa

              
    
          
          
        
        
            f 1 { f 1 {
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            n 3   "author": "Water Research Observatory", n 3   "alternative_identifier": "DOI: 10.5281/zenodo.3996198",
            4   "author": null,
            4   "author_email": null, 5   "author_email": null,
            5   "authors": [ 6   "authors": [
            6     { 7     {
            n 7       "author_department": "Admin", n 8       "author_department": "",
            8       "author_email": "vanderLaanM@arc.agric.za", 9       "author_email": "Michael.Silberbauer@gmail.com",
            9       "author_name": "Water Research Observatory", 10       "author_name": "Michael",
            10       "author_organization": "Water Research Observatory", 11       "author_organization": "Department of Water and Sanitation, 
            12 Resource Quality Information Services, Pretoria, South Africa / 
            13 Freshwater Research Unit (FRU), University of Cape Town",
            11       "author_surname": "Admin", 14       "author_surname": "Silberbauer",
            12       "contact_same_as_author": true 15       "contact_same_as_author": "True"
            16     }
            17   ],
            18   "citation_title": "SILBERBAUER M (2020) ReScience challenge: 
            19 Geographical trends in the water chemistry of wetlands in the 
            20 South\u2011Western Cape Province, South Africa. ReScience C 6 (1) 
            21 Article #13.",
            22   "contact_person": [
            23     {
            24       "contact_department": "",
            25       "contact_email": "Michael.Silberbauer@gmail.com",
            26       "contact_name": "Michael",
            27       "contact_orgnization": "Department of Water and Sanitation, 
            28 Resource Quality Information Services, Pretoria, South Africa / 
            29 Freshwater Research Unit (FRU), University of Cape Town"
            13     } 30     }
            14   ], 31   ],
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            16   "data_classification": "both", 33   "data_classification": "both",
            n 17   "data_collection_organization": "Water Research Observatory", n 34   "data_collection_organization": "University of Cape Town",
            35   "data_reference_date": [
            36     {
            37       "data_reference_date_from": "1986-01-01",
            38       "data_reference_date_to": "1989-12-31"
            39     }
            40   ],
            18   "data_structure_category": "structured", 41   "data_structure_category": "structured",
            n n 42   "dataset_language": "English",
            43   "dataset_license_url": 
            44 "https://creativecommons.org/licenses/by-sa/4.0/",
            19   "did_author_or_contact_organization_collect_the_data": "false", 45   "did_author_or_contact_organization_collect_the_data": "false",
            20   "email": "vanderLaanM@arc.agric.za", 46   "email": "vanderLaanM@arc.agric.za",
            n 21   "extras": [ n 
            22     { 
            23       "key": "Dataset language", 
            24       "value": "English" 
            25     }, 
            26     { 
            27       "key": "topic", 
            28       "value": "wetlands" 
            29     } 
            30   ], 
            31   "groups": [], 47   "groups": [],
            32   "id": "213018f6-d13c-4743-a1a5-5e20fb6f8f7b", 48   "id": "213018f6-d13c-4743-a1a5-5e20fb6f8f7b",
            33   "isopen": false, 49   "isopen": false,
            n 34   "keywords": "wetlands", n 50   "keywords": "Wetlands, Water chemistry, Major ions, Maucha diagrams, 
            51 Western Cape, South Africa, Hydrochemistry",
            35   "license": "Open (Creative Commons)", 52   "license": "Open (Creative Commons)",
            36   "license_id": null, 53   "license_id": null,
            37   "license_title": null, 54   "license_title": null,
            n 38   "maintainer": "Water Research Observatory", n 55   "maintainer": null,
            39   "maintainer_email": "vanderLaanM@arc.agric.za", 56   "maintainer_email": null,
            40   "metadata_created": "2025-10-22T11:52:35.675951", 57   "metadata_created": "2025-10-22T11:52:35.675951",
            n 41   "metadata_modified": "2025-11-11T08:47:17.195044", n 58   "metadata_modified": "2026-02-28T11:38:05.210802",
            59   "minimum_maximum_extent": [
            60     {
            61       "maximum_vertical_extent": "1500",
            62       "minimum_vertical_extent": "0"
            63     }
            64   ],
            42   "name":  65   "name": 
            43 l-trends-in-water-chemistry-of-wetlands-in-western-cape-south-africa", 66 l-trends-in-water-chemistry-of-wetlands-in-western-cape-south-africa",
            n 44   "notes": "Auto-imported dataset for  n 67   "notes": "The dataset contained major\u2011ion water chemistry data 
            45 l-trends-in-water-chemistry-of-wetlands-in-western-cape-south-africa", 68 from wetlands located in the South\u2011Western Cape Province of South 
            69 Africa. The data were originally collected during the late 1980s as 
            70 part of a wetlands research project managed by the Freshwater Research 
            71 Unit at the University of Cape Town. The study investigated whether 
            72 geographical patterns existed in the major\u2011ion chemistry of 
            73 wetland waters by analysing ionic concentrations and visualising their 
            74 relationships using Maucha ionic diagrams.\r\nWater chemistry 
            75 measurements included major cations and anions, together with 
            76 supporting physicochemical variables such as temperature, 
            77 conductivity, salinity, pH, total dissolved solids and nutrients. The 
            78 dataset was stored in a fixed\u2011width ASCII file (CHEMDATA.DAT) and 
            79 later re\u2011analysed for reproducibility as part of the ReScience 
            80 challenge. The reproduced analysis demonstrated the continued 
            81 usability of historical environmental datasets and illustrated 
            82 long\u2011term value for assessing wetland condition and baseline 
            83 water chemistry in the Western Cape region.\r\nThe dataset served as a 
            84 historical baseline for subsequent studies on wetland change and water 
            85 quality trends and supported spatial interpretation of hydrochemical 
            86 variability across wetlands within the study region.",
            46   "num_resources": 1, 87   "num_resources": 1,
            47   "num_tags": 0, 88   "num_tags": 0,
            48   "organization": { 89   "organization": {
            49     "approval_status": "approved", 90     "approval_status": "approved",
            n 50     "created": "2025-10-13T09:33:45.492986", n 91     "created": "2026-02-28T11:26:51.247095",
            51     "description": "", 92     "description": "UCT has a proud tradition of academic excellence 
            52     "id": "5bb446d5-d272-4b69-9a6d-79733926291a", 93 and is currently the top-rated university in Africa and one of the 
            53     "image_url": "", 94 top-rated universities in the world. Our researchers continue to help 
            95 with the creation of African-based solutions to global problems, 
            96 including issues relating to climate change, urbanisation, safety and 
            97 security, education and health, to name just a few. Many UCT 
            98 researchers are recognised world leaders in their respective fields, 
            99 which means that if you choose to study with us, you will continually 
            100 be exposed to the latest scholarly work and research discoveries.",
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            102     "image_url": "2026-02-28-112651.235981UCTLogo.jpg",
            54     "is_organization": true, 103     "is_organization": true,
            n 55     "name": "wro", n 104     "name": "university-of-cape-town",
            56     "state": "active", 105     "state": "active",
            n 57     "title": "Water Research Observatory", n 106     "title": "University of Cape Town",
            58     "type": "organization" 107     "type": "organization"
            59   }, 108   },
            n 60   "owner_org": "5bb446d5-d272-4b69-9a6d-79733926291a", n 109   "owner_org": "6a0bc997-80e8-47b7-8cde-1db2297419a6",
            61   "private": false, 110   "private": false,
            n 62   "publication_date": "2025-10-22", n 111   "publication_date": "2020-08-22",
            63   "publisher": "Water Research Observatory", 112   "publisher": "ReScience C / Zenodo",
            64   "relationships_as_object": [], 113   "relationships_as_object": [],
            65   "relationships_as_subject": [], 114   "relationships_as_subject": [],
            66   "resources": [ 115   "resources": [
            67     { 116     {
            68       "cache_last_updated": null, 117       "cache_last_updated": null,
            69       "cache_url": null, 118       "cache_url": null,
            70       "created": "2025-10-22T11:52:35.968639", 119       "created": "2025-10-22T11:52:35.968639",
            71       "description": null, 120       "description": null,
            72       "format": "xlsx", 121       "format": "xlsx",
            73       "hash": "", 122       "hash": "",
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            75       "is_data_supplementary": "False", 124       "is_data_supplementary": "False",
            76       "last_modified": "2025-10-22T11:52:35.951126", 125       "last_modified": "2025-10-22T11:52:35.951126",
            77       "metadata_modified": "2025-10-22T11:52:35.964457", 126       "metadata_modified": "2025-10-22T11:52:35.964457",
            78       "mimetype":  127       "mimetype": 
            79 "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", 128 "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
            80       "mimetype_inner": null, 129       "mimetype_inner": null,
            81       "name":  130       "name": 
            82 s_king_silberbauer_1991_id_1ac3ca2c-638d-4f4f-89c0-2088b3de4765.xlsx", 131 s_king_silberbauer_1991_id_1ac3ca2c-638d-4f4f-89c0-2088b3de4765.xlsx",
            83       "package_id": "213018f6-d13c-4743-a1a5-5e20fb6f8f7b", 132       "package_id": "213018f6-d13c-4743-a1a5-5e20fb6f8f7b",
            84       "position": 0, 133       "position": 0,
            85       "resource_type": null, 134       "resource_type": null,
            86       "size": 158681, 135       "size": 158681,
            87       "state": "active", 136       "state": "active",
            88       "url":  137       "url": 
            89 s_king_silberbauer_1991_id_1ac3ca2c-638d-4f4f-89c0-2088b3de4765.xlsx", 138 s_king_silberbauer_1991_id_1ac3ca2c-638d-4f4f-89c0-2088b3de4765.xlsx",
            90       "url_type": "upload", 139       "url_type": "upload",
            91       "zipped_file": "False" 140       "zipped_file": "False"
            92     } 141     }
            93   ], 142   ],
            n 94   "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[16.4699,  n 143   "spatial": "{\"type\": \"Polygon\", \"coordinates\": [[[18.2, 
            95 -22.1265], [32.8931, -22.1265], [32.8931, -34.8212], [16.4699,  144 -31.8], [21.5, -31.8], [21.5, -34.8], [18.2, -34.8], [18.2, 
            96 -34.8212], [16.4699, -22.1265]]]}", 145 -31.8]]]}",
            97   "state": "active", 146   "state": "active",
            98   "tags": [], 147   "tags": [],
            99   "title": "Geographical Trends In Water Chemistry Of Wetlands In  148   "title": "Geographical Trends In Water Chemistry Of Wetlands In 
            100 Western Cape South Africa", 149 Western Cape South Africa",
            101   "type": "dataset", 150   "type": "dataset",
            102   "uploader_estimation_of_extent_of_processing": "access", 151   "uploader_estimation_of_extent_of_processing": "access",
            103   "url": null, 152   "url": null,
            104   "version": null, 153   "version": null,
            t 105   "wro_theme": "Wetlands" t 154   "vertical_extent_datum": "masl",
            155   "wrc_project_number": "Not reported in the publication",
            156   "wro_theme": "water_quality"
            106 } 157 }