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Indian Microplastics Evidence Database (IMED) and Indian Microplastics Evidence Atlas (IMEA), Version 1.0
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This record is a dataset: a collection of published findings on microplastics found in India, organized into a searchable database and interactive map. It includes 57 exact-location sites, 160 regional records, and 33 precise measurements, with original units preserved rather than converted.
IMED–IMEA v1.0 is a versioned evidence infrastructure for microplastic occurrence studies in India. IMED (Indian Microplastics Evidence Database) is the frozen, structured scientific database. IMEA (Indian Microplastics Evidence Atlas) is the mapping layer generated from it, released as an interactive HTML atlas, a workbook and CSV exports. The release preserves three layers: what the source authors reported, what was extracted into IMED, and what was standardized or calculated where scientifically defensible. It deliberately avoids forcing incompatible abundance units or denominators into a single concentration scale. Abundance values should be compared only within the same comparability class. Coordinate provenance is retained and coordinates are not invented; regional records are not point locations. ATLAS PRODUCTS- 57 precise-coordinate evidence sites- 160 regional/non-exact evidence records- 33 precise quantitative abundance records- 9 abundance comparability classesThese are counts of atlas products, not counts of independent studies. FILES- IMED_v1.0_FROZEN.xlsx: frozen canonical scientific database- IMEA_v1.0_RELEASE.xlsx: atlas release workbook generated from frozen IMED v1.0- IMEA_v1.0_ATLAS.html: self-contained interactive atlas (download and open in a web browser)- IMEA_v1.0_PRECISE_EVIDENCE.csv, IMEA_v1.0_REGIONAL_EVIDENCE.csv, IMEA_v1.0_ABUNDANCE_PRECISE.csv: atlas data exports- README.md, RELEASE_NOTES_v1.0.md, LICENSE_AND_REUSE.md, CITATION.cff, RELEASE_MANIFEST.csv, SHA256SUMS.txt: documentation, citation metadata and integrity checksums VALIDATION STATUSAn independent reviewer examined a selected 10-study validation set, and the reviewer's corrections were adjudicated into the database. The planned second review round was waived by the project owner. No second-review PASS is claimed. KNOWN LIMITATIONSTwenty-nine sediment /kg records have unresolved wet/dry mass-basis status because the source publications do not support a defensible assignment; they must not be silently converted. Some studies report pooled values that cannot be assigned to individual sites or matrices and remain pooled. See RELEASE_NOTES_v1.0.md for the full list. RIGHTS AND REUSEThe database compiles factual information reported in third-party publications. Copyright in those publications remains with the respective rights holders. Original IMED/IMEA material is released under CC BY 4.0 (atlas code under MIT). Map outlines in the atlas are illustrative and not authoritative for boundaries. Please cite this record and the original primary publication(s) for any study-specific claim. VERSIONINGVersion 1.0 is frozen. New studies and corrections will be released as later versions (v1.1+) with a documented changelog.
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Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.