Changes
On July 23, 2026, 8:30:12 PM UTC,
ckan_admin:
-
Moved Yearly and seasonal variation in the food of red knot chicks in Alaska from https://doi.nioz.nl/dataset/yearly-and-seasonal-variation-in-the-food-of-red-knot-chicks-in-alaska-00000001 to https://doi.nioz.nl/dataset/yearly-and-seasonal-variation-in-the-food-of-red-knot-chicks-in-alaska
| f | 1 | { | f | 1 | { |
| 2 | "author": "Tim Oortwijn (Royal Netherlands Institute for Sea | 2 | "author": "Tim Oortwijn (Royal Netherlands Institute for Sea | ||
| 3 | Research)", | 3 | Research)", | ||
| 4 | "author_email": "tim.oortwijn@nioz.nl", | 4 | "author_email": "tim.oortwijn@nioz.nl", | ||
| 5 | "code": "7b.b.nk", | 5 | "code": "7b.b.nk", | ||
| 6 | "contributor": "Royal Netherlands Institute for Sea Research | 6 | "contributor": "Royal Netherlands Institute for Sea Research | ||
| 7 | (NIOZ)", | 7 | (NIOZ)", | ||
| 8 | "creator_user_id": "03705c63-0794-420a-9630-1b51f4742d0b", | 8 | "creator_user_id": "03705c63-0794-420a-9630-1b51f4742d0b", | ||
| 9 | "creators": | 9 | "creators": | ||
| 10 | \"Oortwijn\",\"orcid\":\"0000-0002-9254-0498\",\"affiliation\":\"Royal | 10 | \"Oortwijn\",\"orcid\":\"0000-0002-9254-0498\",\"affiliation\":\"Royal | ||
| 11 | Netherlands Institute for Sea | 11 | Netherlands Institute for Sea | ||
| 12 | e,\"contactemailaddress\":\"tim.oortwijn@nioz.nl\",\"formatted\":\"Tim | 12 | e,\"contactemailaddress\":\"tim.oortwijn@nioz.nl\",\"formatted\":\"Tim | ||
| 13 | Oortwijn - Royal Netherlands Institute for Sea Research - ORCID: | 13 | Oortwijn - Royal Netherlands Institute for Sea Research - ORCID: | ||
| 14 | 0000-0002-9254-0498 - Corresponding Author - | 14 | 0000-0002-9254-0498 - Corresponding Author - | ||
| 15 | tim.oortwijn@nioz.nl\"}]", | 15 | tim.oortwijn@nioz.nl\"}]", | ||
| 16 | "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.nk", | 16 | "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.nk", | ||
| 17 | "deposit_date": "2026-02-14", | 17 | "deposit_date": "2026-02-14", | ||
| 18 | "depositor": "Tim Oortwijn (tim.oortwijn@nioz.nl)", | 18 | "depositor": "Tim Oortwijn (tim.oortwijn@nioz.nl)", | ||
| 19 | "distribution_date": "2026-02-14", | 19 | "distribution_date": "2026-02-14", | ||
| 20 | "distributor": "Research Data Management(NIOZ Royal Netherlands | 20 | "distributor": "Research Data Management(NIOZ Royal Netherlands | ||
| 21 | Institute for Sea Research)", | 21 | Institute for Sea Research)", | ||
| 22 | "doi_date_published": "2026-02-14T12:31:12.7806107", | 22 | "doi_date_published": "2026-02-14T12:31:12.7806107", | ||
| 23 | "groups": [], | 23 | "groups": [], | ||
| 24 | "id": "013e72e2-ab82-479c-8841-fccd571767ad", | 24 | "id": "013e72e2-ab82-479c-8841-fccd571767ad", | ||
| 25 | "isopen": false, | 25 | "isopen": false, | ||
| 26 | "license_title": null, | 26 | "license_title": null, | ||
| 27 | "maintainer": "Tim", | 27 | "maintainer": "Tim", | ||
| 28 | "maintainer_email": "tim.oortwijn@nioz.nl", | 28 | "maintainer_email": "tim.oortwijn@nioz.nl", | ||
| 29 | "metadata_created": "2026-02-14T11:31:22.359323", | 29 | "metadata_created": "2026-02-14T11:31:22.359323", | ||
| n | 30 | "metadata_modified": "2026-06-18T05:20:16.010860", | n | 30 | "metadata_modified": "2026-07-23T20:30:12.381690", |
| 31 | "name": | 31 | "name": | ||
| n | 32 | seasonal-variation-in-the-food-of-red-knot-chicks-in-alaska-00000001", | n | 32 | arly-and-seasonal-variation-in-the-food-of-red-knot-chicks-in-alaska", |
| 33 | "notes": "Studying animal diets using DNA-metabarcoding of faecal | 33 | "notes": "Studying animal diets using DNA-metabarcoding of faecal | ||
| 34 | samples provides a non-invasive, high-resolution approach to identify | 34 | samples provides a non-invasive, high-resolution approach to identify | ||
| 35 | prey. For long-distance migratory shorebirds, such as red knots | 35 | prey. For long-distance migratory shorebirds, such as red knots | ||
| 36 | (Calidris canutus), chick growth depends on the availability of | 36 | (Calidris canutus), chick growth depends on the availability of | ||
| 37 | surface-dwelling arthropods during the short Arctic summer, yet the | 37 | surface-dwelling arthropods during the short Arctic summer, yet the | ||
| 38 | exact diet of the Alaskan-breeding subspecies (C. c. roselaari) | 38 | exact diet of the Alaskan-breeding subspecies (C. c. roselaari) | ||
| 39 | remains largely unknown. Using metabarcoding, we characterized the | 39 | remains largely unknown. Using metabarcoding, we characterized the | ||
| 40 | diet of red knot chicks in western-Alaska across four summers (2019, | 40 | diet of red knot chicks in western-Alaska across four summers (2019, | ||
| 41 | 2022, 2023 and 2024). We identified key arthropod prey taxa and | 41 | 2022, 2023 and 2024). We identified key arthropod prey taxa and | ||
| 42 | described how diet composition varied among years and throughout the | 42 | described how diet composition varied among years and throughout the | ||
| 43 | chick period. Diet composition was broadly similar between years, but | 43 | chick period. Diet composition was broadly similar between years, but | ||
| 44 | shifted over the chick-growing period, reflecting temporal changes in | 44 | shifted over the chick-growing period, reflecting temporal changes in | ||
| 45 | prey availability. Weevils (Curculionidae) were the most abundant | 45 | prey availability. Weevils (Curculionidae) were the most abundant | ||
| 46 | family in the diet (35.8%), especially early in the season, whereas | 46 | family in the diet (35.8%), especially early in the season, whereas | ||
| 47 | owlet moths (Noctuidae, 11.1%), ichneumoid wasps (Ichneumonidae, | 47 | owlet moths (Noctuidae, 11.1%), ichneumoid wasps (Ichneumonidae, | ||
| 48 | 8.3%), slugs (Agriolimacidae, 6.5%), house flies (Muscidae, 4.8%), and | 48 | 8.3%), slugs (Agriolimacidae, 6.5%), house flies (Muscidae, 4.8%), and | ||
| 49 | crane flies (Tipulidae, 4.4%) became more prominent later in the | 49 | crane flies (Tipulidae, 4.4%) became more prominent later in the | ||
| 50 | season. These patterns suggest that red knot chicks forage | 50 | season. These patterns suggest that red knot chicks forage | ||
| 51 | opportunistically, with diet composition varying over the season in | 51 | opportunistically, with diet composition varying over the season in | ||
| 52 | response to prey emergence and local environmental conditions. The | 52 | response to prey emergence and local environmental conditions. The | ||
| 53 | limited representation of many prey families in pitfall traps | 53 | limited representation of many prey families in pitfall traps | ||
| 54 | highlights the need for improved sampling designs to fully capture | 54 | highlights the need for improved sampling designs to fully capture | ||
| 55 | prey availability. Together, these findings provide a foundation for | 55 | prey availability. Together, these findings provide a foundation for | ||
| 56 | future work on chick growth, survival, and responses to climate-driven | 56 | future work on chick growth, survival, and responses to climate-driven | ||
| 57 | changes in Arctic ecosystems by tundra-breeding shorebirds.", | 57 | changes in Arctic ecosystems by tundra-breeding shorebirds.", | ||
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