[1] Fairfield Univ, Dept Econ, 1073 North Benson Rd, Fairfield, CT 06824 USA
[2] Emerson Coll, Dept Mkt Commun, Boston, MA 02116 USA
[3] Univ San Francisco Quito, Colegio Ciencias Biol & Ambientales, Inst Biosfera Diego Robles & Via Interocean, Quito, Ecuador
[4] Univ San Francisco Quito, Galapagos Sci Ctr, San Cristobal, Galapagos, Ecuador
[5] Univ North Carolina Chapel Hill, San Cristobal, Galapagos, Ecuador
[6] Univ San Francisco Quito, Colegio Ciencias & Ingn, Inst Biosfera Diego Robles & Via Interoce, Quito, Ecuador