{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,16]],"date-time":"2026-10-16T21:56:24Z","timestamp":1792187784700,"version":"4.4.0"},"reference-count":56,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T00:00:00Z","timestamp":1759104000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ecology and Evolution"],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Dietary niche partitioning is a fundamental process in community ecology, of interest to both conservationists and ecologists. We present data on the dietary niches of three sympatric grebes from Lake Titicaca: the endangered endemic Titicaca Grebe\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Rollandia microptera<\/jats:italic>\n                    <\/jats:styled-content>\n                    , Rolland's Grebe\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Rollandia rolland<\/jats:italic>\n                    <\/jats:styled-content>\n                    , and the Silvery Grebe\n                    <jats:styled-content style=\"fixed-case\">\n                      <jats:italic>Podiceps occipitalis<\/jats:italic>\n                    <\/jats:styled-content>\n                    . This is the first study comparing the diets of these three species since 1981. We conducted stomach content analysis on 45 Titicaca Grebes, 30 Rolland's Grebes, and 15 Silvery Grebes, and quantified the degree of niche overlap among individuals and what prey classes were driving variation between species. Rolland's Grebe and the Silvery Grebe have a more invertebrate\u2010based diet than the Titicaca Grebe. The use of presence\u2010absence methodologies and numeric methodologies for counting prey items leads to different results regarding dietary differences between these species. While our dietary categories are too coarse to definitively prove it is a case of dietary niche partitioning, it is indicative of it. We suggest future avenues to prove dietary niche partitioning in these species, and how dietary studies could answer questions regarding this ecosystem's response to invasive species.\n                  <\/jats:p>","DOI":"10.1002\/ece3.72123","type":"journal-article","created":{"date-parts":[[2025,9,30]],"date-time":"2025-09-30T06:20:30Z","timestamp":1759213230000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Diets of Three Sympatric Grebe Species in Lake Titicaca Indicate Possible Dietary Niche Partitioning"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9609-7983","authenticated-orcid":false,"given":"D. A.","family":"Villar","sequence":"first","affiliation":[{"name":"Edward Grey Institute of Field Ornithology, Department of Biology University of Oxford  Oxford UK"},{"name":"Department of Anthropology Durham University  Durham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ever","family":"Yanes","sequence":"additional","affiliation":[{"name":"Facultad de Ciencias Biol\u00f3gicas Universidad Nacional del Altiplano  Puno Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edwin R.","family":"Guti\u00e9rrez Tito","sequence":"additional","affiliation":[{"name":"Parque Nacional Bahuaja\u2010Sonene Servicio Nacional de \u00c1reas Naturales Protegidas por el Estado  Puerto Maldonado Peru"},{"name":"Institute of Human Sciences University of Oxford  Oxford UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew G.","family":"Gosler","sequence":"additional","affiliation":[{"name":"Edward Grey Institute of Field Ornithology, Department of Biology University of Oxford  Oxford UK"},{"name":"Institute of Human Sciences University of Oxford  Oxford UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,9,29]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1139\/f2012\u2010051"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfb.14151"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11270\u2010016\u20103217\u20100"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1071\/MF21212"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/faf.12026"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/ece3.9599"},{"key":"e_1_2_9_8_1","volume-title":"Important Bird Area Factsheet: Lago Titicaca","author":"BirdLife International","year":"2024"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/gcb.12796"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.2307\/1942268"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fishres.2017.08.003"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10661\u2010013\u20103306\u20100"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1442\u20109993.1993.tb00438.x"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fishres.2014.11.005"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095\u20108649.1973.tb04472.x"},{"key":"e_1_2_9_16_1","first-page":"125","article-title":"Comparative Ecology of Peruvian Grebes: A Study of the Mechanisms of Evolution of Ecological Isolation","volume":"144","author":"Fjelds\u00e5 J.","year":"1981","journal-title":"Videnskabelige Medde\u2010Lelser Fra Dansk Naturhistorik Forening"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1474\u2010919X.1983.tb03142.x"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1093\/oso\/9780198500643.001.0001"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.9.4.389"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0024554"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-75110-3_14"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.2307\/3677072"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.131.3409.1292"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.2307\/1367645"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ecolind.2018.06.035"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.2307\/1570"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095\u20108649.1980.tb02775.x"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1111\/1365\u20102435.13601"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.2307\/1552"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1086\/282505"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0959270906000384"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jas.2009.09.043"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.2113395118"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfb.12529"},{"key":"e_1_2_9_35_1","doi-asserted-by":"crossref","unstructured":"Ogle D. 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