Timeline / Data.gov — Environment Datasets
changed Source changed
A new raw object was archived. Both versions are preserved. 424 line(s) added, 305 line(s) removed.
Evidence
| Source | Data.gov — Environment Datasets |
|---|---|
| Agency | Data.gov |
| URL | https://api.gsa.gov/technology/datagov/v4/search?q=environment&sort=last_harvested_date&per_page=100&api_key=${DATAGOV_API_KEY} |
| Observed by | Civic Memory, directly, on 2026-09-29T18:20:38+00:00 |
| Content type | application/json |
| Current object |
d0ca14e4f945f5d793bd4386480812763d9eaefdc60dc627bd2f70f8e56f9e23
download raw
metadata
|
| Previous object |
8d0349e37ef237c713299398491adaf0359455ca195998f799d301411e8d8dc7
download raw
metadata
|
What changed derived
This diff is not evidence. It was produced by
civic-memory.diff_engine 1.1.0 at
2026-09-29T18:20:38+00:00 by normalizing the two archived objects above. The
objects are authoritative; this reading of them can be regenerated or deleted
without loss. 424 line(s) added, 305 line(s) removed.
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10.413882, + 10.419216, 2, "3e06019b-49df-4465-826b-e2cdfd526c08" ], @@ -130,10 +476,10 @@ "type": "dataset" }, { - "_score": 10.499886, + "_score": 10.518519, "_sort": [ 1790648289803, - 10.499886, + 10.518519, 5, "55601e8a-b8d0-401d-937c-f30f81edf947" ], @@ -258,10 +604,10 @@ "type": "dataset" }, { - "_score": 10.338074, + "_score": 10.329717, "_sort": [ 1790648230203, - 10.338074, + 10.329717, 1, "da73e18a-7c5e-401a-bdb1-0c3d66eb2ccc" ], @@ -386,10 +732,10 @@ "type": "dataset" }, { - "_score": 10.292262, + "_score": 10.29743, "_sort": [ 1790648179524, - 10.292262, + 10.29743, 3, "1d2dba95-81b9-4104-9d66-3e588ee978ec" ], @@ -514,10 +860,10 @@ "type": "dataset" }, { - "_score": 6.919711, + "_score": 6.9166117, "_sort": [ 1790648074270, - 6.919711, + 6.9166117, 5, "ecff340e-3458-4575-be26-e3f864fadaec" ], @@ -694,10 +1040,10 @@ "type": "dataset" }, { - "_score": 10.283914, + "_score": 10.286862, "_sort": [ 1790647714878, - 10.283914, + 10.286862, 1, "4c15edc0-6824-49d4-a200-c9b1af8d5e7f" ], @@ -822,10 +1168,10 @@ "type": "dataset" }, { - 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10.379858, + 10.397549, 3, "bedaa09e-ea00-4ad9-9b43-27c05a7ac753" ], @@ -1652,10 +1998,10 @@ "type": "dataset" }, { - "_score": 10.458222, + "_score": 10.449636, "_sort": [ 1790645402153, - 10.458222, + 10.449636, 2, "7ce335ed-1386-489a-ae8a-98892f03948e" ], @@ -1780,10 +2126,10 @@ "type": "dataset" }, { - "_score": 10.413882, + "_score": 10.419216, "_sort": [ 1790644980593, - 10.413882, + 10.419216, 4, "fa1dc7f2-b2d9-4436-bd3e-e2d07b89003a" ], @@ -1908,10 +2254,10 @@ "type": "dataset" }, { - "_score": 10.440717, + "_score": 10.444968, "_sort": [ 1790644894594, - 10.440717, + 10.444968, 1, "b6caff4c-d0f5-482b-af09-8ec58d7aadf0" ], @@ -2036,10 +2382,10 @@ "type": "dataset" }, { - "_score": 9.411576, + "_score": 9.422277, "_sort": [ 1790644508322, - 9.411576, + 9.422277, 1, "6ac5b77d-b5e4-4832-99e2-040e59375c70" ], @@ -2172,10 +2518,10 @@ "type": "dataset" }, { - "_score": 8.947856, + "_score": 8.955601, "_sort": [ 1790643935328, - 8.947856, + 8.955601, 3, "d5510ca0-8b5e-416f-bcbf-e3c284305059" ], @@ -2318,10 +2664,10 @@ "type": "dataset" }, { - 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10.09137, + 10.095018, 2, "b6074b84-7cc1-4bc3-af12-32e06ba11171" ], @@ -3422,10 +3768,10 @@ "type": "dataset" }, { - "_score": 11.35296, + "_score": 11.359667, "_sort": [ 1790629722279, - 11.35296, + 11.359667, 1, "6e954bbf-f767-4d09-a542-3d43a0d0ad90" ], @@ -3590,10 +3936,10 @@ "type": "dataset" }, { - "_score": 11.42465, + "_score": 11.451121, "_sort": [ 1790629722052, - 11.42465, + 11.451121, 1, "8e46dfe4-93c0-4370-a5f8-d22119e4ea8b" ], @@ -3758,10 +4104,10 @@ "type": "dataset" }, { - "_score": 11.358189, + "_score": 11.364174, "_sort": [ 1790629721838, - 11.358189, + 11.364174, 2, "0eba1a0e-4497-442a-bd08-57360bdf3f15" ], @@ -3926,10 +4272,10 @@ "type": "dataset" }, { - "_score": 7.2227564, + "_score": 7.224025, "_sort": [ 1790629719187, - 7.2227564, + 7.224025, 0, "0b192d4c-b197-4568-94b7-dce7556c8241" ], @@ -4202,10 +4548,10 @@ "type": "dataset" }, { - "_score": 8.158903, + "_score": 8.160902, "_sort": [ 1790629718990, - 8.158903, + 8.160902, 0, "bfb42406-0de3-4b7b-8612-7c8193fbd51d" ], @@ -4490,10 +4836,10 @@ "type": "dataset" }, { - 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66.13011, + 66.13916, 0, "2322d71d-7b41-4281-9b1d-3ae822eb8b46" ], @@ -5498,10 +5844,10 @@ "type": "dataset" }, { - "_score": 2.702032, + "_score": 2.6997662, "_sort": [ 1790629711979, - 2.702032, + 2.6997662, 2, "abd5602d-1c53-42cd-a3b2-83912a2965fa" ], @@ -5795,10 +6141,10 @@ "type": "dataset" }, { - "_score": 54.360985, + "_score": 54.368137, "_sort": [ 1790629644950, - 54.360985, + 54.368137, 2, "627746d6-1a5f-43bc-8933-06d33a7bf3b5" ], @@ -6001,10 +6347,10 @@ "type": "dataset" }, { - "_score": 28.956787, + "_score": 28.93074, "_sort": [ 1790629635973, - 28.956787, + 28.93074, 5, "0697d063-75bc-4ebc-b9ec-ee9d8e4648a8" ], @@ -6149,10 +6495,10 @@ "type": "dataset" }, { - "_score": 8.364025, + "_score": 8.327044, "_sort": [ 1790629619389, - 8.364025, + 8.327044, 3, "6a972568-678e-4dfe-8ab5-7455236aa238" ], @@ -6166,231 +6512,4 @@ "fn": "Gerken, Alison R.", "hasEmail": "mailto:alison.gerken@usda.gov" }, - "description": "<p dir=\"ltr\">[Note 2026-08-31: File \"README_Tribolium_Density_MS_ADDENDUM.txt\" was added to dataset.]</p><p dir=\"ltr\">[Note 2026-08-12: Files \"Supplemental Table 1_adult number g larvae.xlsx\", \"Supplemental Table 2_flour loss glm.xlsx\", \"Supplemental Table 3_reproductive output contrasts.csv\", \"Supplemental Table 4_Pairwise_G-Test_DFU_adults.xlsx\", and \"Supplemental Table 5_VOC peak table.csv\" were added to dataset.]</p><p dir=\"ltr\"><i>Tribolium castaneum</i>, the red flour beetle, is a key pest of cereal grains and products that routinely infests food processing facilities. Such facilities represent dynamic environments comprising patches of resources of variable size and quality. To understand the influence of resource availability, insect density, and initial life stage on population regulation in <i>T. castaneum</i>, this study assessed the carrying capacity and population growth rates of <i>T. castaneum </i>populations<i> </i>kept for 20 weeks in a closed environment on four different amounts of diet at four starting population levels, then compared <i>T. castaneum</i> attraction to, reproductive output on, and the volatile profiles of previously-infested (e.g., conditioned) flour. Resource availability (e.g. the amount of flour) interacted with founding population density and life stage to influence <i>T. castaneum </i>population dynamics. In resource-limited patches, carrying capacity estimates were similar across founding densities, but the effect of founding population density on carrying capacity increased with flour availability. The opposite was observed for population growth rate, which tended to be more variable for small patches but stabilized as resource availability increased. Interestingly, both effects were reduced for populations founded as larvae compared to those founded as adults. The volatile profile of conditioned flour was also influenced by the interaction of patch size, density, and life stage. The relative abundance of 1-pentadecene and benzoquinones tended to be reduced in the volatile profiles of large patches, whereas 4,8-dimethyldecanal comprised a higher proportion of the total volatile emissions. Conditioned flour from large patches tended to be more attractive to <i>T. castaneum </i>adults, although this effect decreased as founding density increased. By contrast, when populations were founded as larvae, the volatile profiles of <i>T. castaneum </i>attraction to, and <i>T. castaneum </i>fecundity on conditioned flours were similar. These findings expand our understanding of how resource limitation and density-dependent effects influence <i>T. castaneum </i>population regulation and behavior, with implications for long-term trap monitoring and population thresholds in stored products.</p><p dir=\"ltr\">Supplemental Tables are included in the data files and referenced in the published manuscript.</p>", - "distribution": [ - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174720", - "format": "txt", - "mediaType": "text/plain", - "title": "README_Tribolium_Density_MS.txt" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174723", - "format": "csv", - "mediaType": "text/csv", - "title": "StartAsAdult_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174726", - "format": "csv", - "mediaType": "text/csv", - "title": "StartAsLarvae_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174729", - "format": "csv", - "mediaType": "text/csv", - "title": "Supplemental Table 1.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174732", - "format": "csv", - "mediaType": "text/csv", - "title": "Supplemental Table 2.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174735", - "format": "csv", - "mediaType": "text/csv", - "title": "Supplemental Table 3.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174738", - "format": "xlsx", - "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", - "title": "Supplemental Table 3.xlsx" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174741", - "format": "csv", - "mediaType": "text/csv", - "title": "Supplemental Table 4.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174744", - "format": "csv", - "mediaType": "text/csv", - "title": "VOC_Analysis_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174747", - "format": "csv", - "mediaType": "text/csv", - "title": "Wind_Tunnel_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174750", - "format": "csv", - "mediaType": "text/csv", - "title": "Fecundity_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/62174753", - "format": "csv", - "mediaType": "text/csv", - "title": "Nutrient_Data.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/67471635", - "format": "xlsx", - "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", - "title": "Supplemental Table 1_adult number g larvae.xlsx" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/67471638", - "format": "xlsx", - "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", - "title": "Supplemental Table 2_flour loss glm.xlsx" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/67471641", - "format": "csv", - "mediaType": "text/plain", - "title": "Supplemental Table 3_reproductive output contrasts.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/67471644", - "format": "xlsx", - "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", - "title": "Supplemental Table 4_Pairwise_G-Test_DFU_adults.xlsx" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/67471647", - "format": "csv", - "mediaType": "text/csv", - "title": "Supplemental Table 5_VOC peak table.csv" - }, - { - "@type": "dcat:Distribution", - "downloadURL": "https://ndownloader.figshare.com/files/68074549", - "format": "txt", - "mediaType": "text/plain", - "title": "README_Tribolium_Density_MS_ADDENDUM.txt" - } - ], - "identifier": "10.15482/USDA.ADC/31416551.v3", - "keyword": [ - "Red Flour Beetle", - "Triboliiu castaneum", - "anemotaxis", - "carrying capacity limitations", - "density regulation", - "semiochemicals" - ], - "license": "https://creativecommons.org/publicdomain/zero/1.0/", - "modified": "2026-08-31", - "programCode": [ - "005:040" - ], - "publisher": { - "@type": "org:Organization", - "name": "Agricultural Research Service" - }, - "temporal": "2022-07-01/2025-01-29", - "title": "Data from: How you start matters: Density, resource size, and life stage impact population levels for pest insects" - }, - "description": "<p dir=\"ltr\">[Note 2026-08-31: File \"README_Tribolium_Density_MS_ADDENDUM.txt\" was added to dataset.]</p><p dir=\"ltr\">[Note 2026-08-12: Files \"Supplemental Table 1_adult number g larvae.xlsx\", \"Supplemental Table 2_flour loss glm.xlsx\", \"Supplemental Table 3_reproductive output contrasts.csv\", \"Supplemental Table 4_Pairwise_G-Test_DFU_adults.xlsx\", and \"Supplemental Table 5_VOC peak table.csv\" were added to dataset.]</p><p dir=\"ltr\"><i>Tribolium castaneum</i>, the red flour beetle, is a key pest of cereal grains and products that routinely infests food processing facilities. Such facilities represent dynamic environments comprising patches of resources of variable size and quality. To understand the influence of resource availability, insect density, and initial life stage on population regulation in <i>T. castaneum</i>, this study assessed the carrying capacity and population growth rates of <i>T. castaneum </i>populations<i> </i>kept for 20 weeks in a closed environment on four different amounts of diet at four starting population levels, then compared <i>T. castaneum</i> attraction to, reproductive output on, and the volatile profiles of previously-infested (e.g., conditioned) flour. Resource availability (e.g. the amount of flour) interacted with founding population density and life stage to influence <i>T. castaneum </i>population dynamics. In resource-limited patches, carrying capacity estimates were similar across founding densities, but the effect of founding population density on carrying capacity increased with flour availability. The opposite was observed for population growth rate, which tended to be more variable for small patches but stabilized as resource availability increased. Interestingly, both effects were reduced for populations founded as larvae compared to those founded as adults. The volatile profile of conditioned flour was also influenced by the interaction of patch size, density, and life stage. The relative abundance of 1-pentadecene and benzoquinones tended to be reduced in the volatile profiles of large patches, whereas 4,8-dimethyldecanal comprised a higher proportion of the total volatile emissions. Conditioned flour from large patches tended to be more attractive to <i>T. castaneum </i>adults, although this effect decreased as founding density increased. By contrast, when populations were founded as larvae, the volatile profiles of <i>T. castaneum </i>attraction to, and <i>T. castaneum </i>fecundity on conditioned flours were similar. These findings expand our understanding of how resource limitation and density-dependent effects influence <i>T. castaneum </i>population regulation and behavior, with implications for long-term trap monitoring and population thresholds in stored products.</p><p dir=\"ltr\">Supplemental Tables are included in the data files and referenced in the published manuscript.</p>", - "distribution_titles": [ - "README_Tribolium_Density_MS.txt", - "StartAsAdult_Data.csv", - "StartAsLarvae_Data.csv", - "Supplemental Table 1.csv", - "Supplemental Table 2.csv", - "Supplemental Table 3.csv", - "Supplemental Table 3.xlsx", - "Supplemental Table 4.csv", - "VOC_Analysis_Data.csv", - "Wind_Tunnel_Data.csv", - "Fecundity_Data.csv", - "Nutrient_Data.csv", - "Supplemental Table 1_adult number g larvae.xlsx", - "Supplemental Table 2_flour loss glm.xlsx", - "Supplemental Table 3_reproductive output contrasts.csv", - "Supplemental Table 4_Pairwise_G-Test_DFU_adults.xlsx", - "Supplemental Table 5_VOC peak table.csv", - "README_Tribolium_Density_MS_ADDENDUM.txt" - ], - "harvest_record": "https://catalog.data.gov/harvest_record/969d44b7-4830-4636-b6e8-6e572d53e04c", - "harvest_record_raw": "https://catalog.data.gov/harvest_record/969d44b7-4830-4636-b6e8-6e572d53e04c/raw", - "has_download": true, - "has_spatial": false, - "identifier": "10.15482/USDA.ADC/31416551.v3", - "keyword": [ - "Red Flour Beetle", - "Triboliiu castaneum", - "anemotaxis", - "carrying capacity limitations", - "density regulation", - "semiochemicals" - ], - "last_harvested_date": "2026-09-28T21:06:59.389798", - "organization": { - "aliases": [ - "dept" - ], - "code_repo_exempt": false, - "code_repo_url": null, - "description": null, - "id": "352b4532-793d-4075-a03f-05b778a3c43a", - "logo": "https://raw.githubusercontent.com/GSA/logo/refs/heads/master/usda.png", - "name": "Department of Agriculture", - "organization_type": "Federal Government", - "slug": "usda" - }, - "parent_identifier": null, - "popularity": 3, - "publisher": "Agricultural Research Service", - "slug": "data-from-how-you-start-matters-density-resource-size-and-life-stage-impact-population-lev", - "spatial_centroid": null, - "spatial_shape": null, - "theme": [], - "title": "Data from: How you start matters: Density, resource size, and life stage impact population levels for pest insects", - "type": "dataset" - }, - { - "_score": 47.3795, - "_sort": [ - 1790629612922, - 47.3795, - 1, - "07a03d07-67fd-4edf-b170-c6bad8f0820d" - ], - "dcat": { - "@type": "dcat:Dataset", - "accessLevel": "public", - "accrualPeriodicity": "R/P1Y", - "bureauCode": [ - "005:18" - ], - "contactPoint": { - "fn": "Ewing, Patrick M.", - "hasEmail": "mailto:patrick.ewing@usda.gov" - }, - "description": "<p dir=\"ltr\">This data examines the impact of genotype, environment, and crop management practices on oat (<i>Avena sativa</i> L.) grain yield, milling quality, and nutritional content over three growing seasons (2021-2023). Data were collected at the USDA-ARS-managed Eastern South Dakota Soil and Water Research Farm in Brookings, South Dakota. Treatments included three oat varieties with differing plant architectures, planted at three populations, and co-established (or not) with a medium red clover (<i>Trifolium pratense</i> L.) green manure. Data include weather and oat performance - the latter of which includes biomass and grain yield, grain milling quality, and grain nutrient content. Code to analyze the data and produce figures in the peer-reviewed manuscript is also included. Please see the Metadata + "description": "<p dir=\"ltr\">[Note 2026-08-31: File \"README_Tribolium_Density_MS_ADDENDUM.txt\" was added to dataset.]</p><p dir=\"ltr\">[Note 2026-08-12: Files \"Supplemental Table 1_adult number g larvae.xlsx\", \"Supplemental Table 2_flour