Carrillo-Birkhahn, J.A., Y.E., Torres-Rojas, S., Aguiñiga-García & A., Sánchez-González (2023). Cambios ambientales en una laguna costera tropical: un enfoque de d18O y d13C en una especie residente. Revista Mexicana de Biodiversidad. 94: e944201. DOI: 10.22201/ib.20078706e.2023.94.4201.
José Armando Carrillo-Birkhahn 1, Yassir Edén Torres-Rojas 1, Sergio Aguiñiga-García 2 y Alberto Sánchez-González 2
To study the environmental variations at the spatio-temporal level in tropical coastal lagoons and their impact on resident fauna, the isotopic composition (d18O and d13C) of 70 otoliths (1 per pair) of the fish Bairdiella chrysoura were analyzed. This fish species is considered as resident of the Laguna de Términos Flora and Fauna Protection Area (APFFLT). Monthly samplings were carried out (September 2016 to August 2017) at 17 APFFLT stations, where the specimens were obtained and the “sagitta” otolith was analyzed Significant differences were found in d18O at the temporal level, suggesting that the otoliths respond to environmental changes, associated with fluctuations in temperature and salinity related with the zone (low overlap between seasons in d13C). Paleo-temperature equations showed a better fit with salinity changes, demonstrating the influence of this variable in tropical coastal lagoons. In conclusion, the d18O and d13C showed that B. chrysouraregisters environmental changes present in the APFFLT, however, it is suggested to develop paleo-climatic equations for tropical coastal lagoons to project regional climate scenarioswere analyzed. This fish species is considered as resident of the Laguna de Términos Flora and Fauna Protection Area (APFFLT). Monthly samplings were carried out (September 2016 to August 2017) at 17 APFFLT stationsPaleo-temperature equations showed a better fit with salinity changes, demonstrating the influence of this variable in tropical coastal lagoons. In conclusion, the d18O and d13C showed that B. chrysouraregisters environmental changes present in the APFFLT, however, it is suggested to develop paleo-climatic equations for tropical coastal lagoons to project regional climate scenarioswere analyzed. This fish species is considered as resident of the Laguna de Términos Flora and Fauna Protection Area (APFFLT). Monthly samplings were carried out (September 2016 to August 2017) at 17 APFFLT stations, where the specimens were obtained and the “sagitta” otolith was analyzed using GasBench coupled to an isotopic ratios mass spectrometer. Significant differences were found in d18O at the temporal level, suggesting that the otoliths respond to environmental changes, associated with fluctuations in temperature and salinity related with the zone (low overlap between seasons in d13C). Paleo-temperature equations showed a better fit with salinity changes, demonstrating the influence of this variable in tropical coastal lagoons. In conclusion, the d18O and d13C showed that B. chrysouraregisters environmental changes present in the APFFLT, however, it is suggested to develop paleo-climatic equations for tropical coastal lagoons to project regional climate scenarioswere analyzed. This fish species is considered as resident of the Laguna de Términos Flora and Fauna Protection Area (APFFLT). Monthly samplings were carried out (September 2016 to August 2017) at 17 APFFLT stations, where the specimens were obtained and the “sagitta” otolith was analyzed using GasBench coupled to an isotopic ratios mass spectrometer. Significant differences were found in d18O at the temporal level, suggesting that the otoliths respond to environmental changes, associated with fluctuations in temperature and salinity related with the zone (low overlap between seasons in d13C). Paleo-temperature equations showed a better fit with salinity changes, demonstrating the influence of this variable in tropical coastal lagoons. In conclusion, the d18O and d13C showed that B. chrysouraregisters environmental changes present in the APFFLT, however, it is suggested to develop paleo-climatic equations for tropical coastal lagoons to project regional climate scenarioswere analyzed. This fish species is considered as resident of the Laguna de Términos Flora and Fauna Protection Area (APFFLT). Monthly samplings were carried out (September 2016 to August 2017) at 17 APFFLT stations, where the specimens were obtained and the “sagitta” otolith was analyzed using GasBench coupled to an isotopic ratios mass spectrometer. Significant differences were found in d18O at the temporal level, suggesting that the otoliths respond to environmental changes, associated with fluctuations in temperature and salinity related with the zone (low overlap between seasons in d13C). Paleo-temperature equations showed a better fit with salinity changes, demonstrating the influence of this variable in tropical coastal lagoons. In conclusion, the d18O and d13C showed that B. chrysouraregisters environmental changes present in the APFFLT, however, it is suggested to develop paleo-climatic equations for tropical coastal lagoons to project regional climate scenarios
Palabras clave: isótopos estables; Laguna de Términos; Bioindicadores; peces; cambio climático
Para obtener una copia del documento contacta la personal de la biblioteca a través del correo bibliocicimar{a}ipn.mx