{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T10:05:45Z","timestamp":1768471545474,"version":"3.49.0"},"reference-count":29,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2024,6,10]],"date-time":"2024-06-10T00:00:00Z","timestamp":1717977600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"FCT-Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia, Portugal","doi-asserted-by":"publisher","award":["UIDB\/00006\/2020"],"award-info":[{"award-number":["UIDB\/00006\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Mathematics"],"abstract":"<jats:p>The aim of this paper is to study the use of Lambert W functions in the analysis of nonlinear dynamics and bifurcations of a new two-dimensional \u03b3-Ricker population model. Through the use of such transcendental functions, it is possible to study the fixed points and the respective eigenvalues of this exponential diffeomorphism as analytical expressions. Consequently, the maximum number of fixed points is proved, depending on whether the Allee effect parameter \u03b3 is even or odd. In addition, the analysis of the bifurcation structure of this \u03b3-Ricker diffeomorphism, also taking into account the parity of the Allee effect parameter, demonstrates the results established using the Lambert W functions. Numerical studies are included to illustrate the theoretical results.<\/jats:p>","DOI":"10.3390\/math12121805","type":"journal-article","created":{"date-parts":[[2024,6,11]],"date-time":"2024-06-11T03:15:58Z","timestamp":1718075758000},"page":"1805","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Lambert W Functions in the Analysis of Nonlinear Dynamics and Bifurcations of a 2D \u03b3-Ricker Population Model"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8053-6822","authenticated-orcid":false,"given":"J. Leonel","family":"Rocha","sequence":"first","affiliation":[{"name":"CEAUL and Department of Mathematics of ISEL-Engineering Superior Institute of Lisbon, Polytechnic Institute of Lisbon, Rua Conselheiro Em\u00eddio Navarro 1, 1959-007 Lisboa, Portugal"}]},{"given":"Abdel-Kaddous","family":"Taha","sequence":"additional","affiliation":[{"name":"INSA, Federal University of Toulouse Midi-Pyr\u00e9n\u00e9es, 135 Avenue de Rangueil, 31077 Toulouse, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6358-8214","authenticated-orcid":false,"given":"Stella","family":"Abreu","sequence":"additional","affiliation":[{"name":"CMUP, LEMA, ISEP, Polytechnic of Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida 431, 4249-015 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1139\/f54-039","article-title":"Stock and recruitment","volume":"11","author":"Ricker","year":"1954","journal-title":"J. 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