eprintid: 4951 rev_number: 20 eprint_status: archive userid: 351 dir: disk0/00/00/49/51 datestamp: 2016-01-15 02:07:51 lastmod: 2021-08-27 17:15:45 status_changed: 2016-01-15 02:07:51 type: monograph metadata_visibility: show item_issues_count: 2 creators_name: Feo, O. de creators_name: Rinaldi, S. creators_id: 7286 title: Singular Homoclinic Bifurcations in Tri-trophic Food Chains ispublished: pub internal_subjects: iis_met internal_subjects: iis_mod internal_subjects: iis_sys divisions: prog_dyn abstract: The Rosenzweig-MacArthur food chain model is proved to have homoclinic orbits. The proof is in two steps. First we use a geometric approach based on singular perturbation and detect singular homoclinic orbits as well as parameter combinations for which these orbits exist. Then we show, numerically, that for slightly different parameter values there exist also non singular homoclinic orbits which tend toward the singular ones when the time responses of the three trophic levels are extremely diversified. The analysis is performed systematically, without exploiting too deeply the mathematical structure of the Rosenzweig-MacArthur model. This is done intentionally, in order to facilitate readers interested more in the methodology than in the application to food chains. date: 1996-07 date_type: published publisher: WP-96-076 iiasapubid: WP-96-076 price: 10 creators_browse_id: 253 full_text_status: public monograph_type: working_paper place_of_pub: IIASA, Laxenburg, Austria pages: 32 coversheets_dirty: FALSE fp7_type: info:eu-repo/semantics/book citation: Feo, O. de & Rinaldi, S. (1996). Singular Homoclinic Bifurcations in Tri-trophic Food Chains. IIASA Working Paper. IIASA, Laxenburg, Austria: WP-96-076 document_url: https://pure.iiasa.ac.at/id/eprint/4951/1/WP-96-076.pdf