Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/41954
Title: Hyperiid amphipod community in the Eastern Tropical Pacific before, during, and after El Niño 1997-1998
Author: Pisarchik, A.N.
Jaimes-Reategui, R.
Issue Date: 2005
Abstract: In addition to the well-known Rossler funnel that consists in near-homoclinic orbits, perfect homoclinic orbits have been found numerically and experimentally in a simplest piecewise linear Rossler-like electronic circuit. The evolution of the system in the homoclinic range exhibits period-bubbling and period-adding cascades when a control parameter is changed. A scaling law in the period-adding cascade between the period of a homoclinic orbit and the bifurcation parameter is evaluated. Other phenomena, such as the coexistence of two homoclinic orbits, homoclinic chaos, symmetry breaking and phase bistability are also demonstrated. The results of numerical simulations are in a good agreement with experiments. " 2005 IOP Publishing Ltd.",,,,,,"10.1088/1742-6596/23/1/014",,,"http://hdl.handle.net/20.500.12104/41954","http://www.scopus.com/inward/record.url?eid=2-s2.0-25844507138&partnerID=40&md5=b0f0a116d8d49d0bf70c3fa7702c2b7d",,,,,,"1",,"Journal of Physics: Conference Series",,"122
127",,"23",,"Scopus",,,,,,,,,,,,"Homoclinic orbits in a piecewise linear Rossler-like circuit",,"Conference Paper" "43754","123456789/35008",,"Ruelas, R., Depto. de Ing. de Proyectos, CUCEI, Universidad de Guadalajara, Apdo. Postal 307, Zapopan, Jalisco 45101, Mexico",,"Ruelas, R.",,"1999",,"This paper shows the conditions needed to be able to determine the behavior of the output of a fuzzy model from the input variables membership functions. This is made possible by breaking down the model into sections and in the relation between the fuzzy sets and the fuzzy rules for each section. Through this procedure, we obtain a well-defined relation between the inputs and the output of the model. We present the results for the approximation of a maximum (minimum) of a fuzzy model with two inputs, and we give the results for the general case of multi-inputs. Besides, it is an evident necessity to develop the concept of multimodel when at least two different membership functions for the same fuzzy set for one or more variables of the input are needed.",,,,,,,,,"http://hdl.handle.net/20.500.12104/41975","http://www.scopus.com/inward/record.url?eid=2-s2.0-4944258930&partnerID=40&md5=84faa456335c96a63f043b9f6260d52e",,,,,,,,"Computational Intelligence and Applications",,"55
60",,,,"Scopus",,,,,,"Function approximator; Fuzzy modeling; Fuzzy system; Membership functions",,,,,,"How to choose membership functions for fuzzy models in approximation problems",,"Article" "43791","123456789/35008",,"Gasca, R., El Colegio de la Frontera Sur (ECOSUR), Apdo. Postal 424, Chetumal, Q. Roo 77014, Mexico; Franco-Gordo, C., Centro Universitario de la Costa Sur (CUCSUR), Universidad de Guadalajara, San Patricio Melaque, Jalisco 48980, Mexico; Godínez-Domínguez, E., Centro Universitario de la Costa Sur (CUCSUR), Universidad de Guadalajara, San Patricio Melaque, Jalisco 48980, Mexico; Suárez-Morales, E., El Colegio de la Frontera Sur (ECOSUR), Apdo. Postal 424, Chetumal, Q. Roo 77014, Mexico",,"Gasca, R.
Franco-Gordo, C.
Godinez-Dominguez, E.
Suarez-Morales, E.",,"2012",,"To evaluate the hyperiid community's response to the influence of oceanographic conditions related to 'El Niño' (EN) in the Mexican Tropical Pacific area, zooplankton samples collected over 27 mo between December 1995 and December 1998 were analyzed. The most abundant of the 80 species recorded were Hyperioides sibaginis and Lestrigonus bengalensis. Two different climatic yearly periods were revealed, including one from February to June, related to the strongest flow of the California Current (CC), with cooler (<25 ) and saltier (>34.5 psu) waters. In this period, hyperiids were more species-rich and diverse, with greater evenness, but had lower abundances. From July to December, the North Equatorial Countercurrent (NECC) was predominant, with warmer waters (>25 ) and lower salinity (<34.5 psu). H. sibaginis and L. benga lensis were dominant, particularly in the aftermath of EN (after June 1998). The influence of the Equatorial water during EN favored a greater abundance of warm-water hyperiid families and a greater evenness, particularly during 1998. During EN, higher hyperiid abundance and diversity but also a 30% increase of species richness and a greater abundance of the dominant species were observed. After the end of EN and for the rest of the sampling period, the oceanographic conditions returned to normality in the area, but the hyperiid community still showed relatively low diversity and high abundance values. " Inter-Research 2012.
URI: http://hdl.handle.net/20.500.12104/42012
http://www.scopus.com/inward/record.url?eid=2-s2.0-84861879580&partnerID=40&md5=a0a66944c7e70170257d82be0958c233
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