Variability of the trophic state in a coastal reef system associated with submarine groundwater discharge in the Mexican Caribbean.

Autor: Camacho-Cruz K; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Avenida IPN, s/n Colonia Playa Palo de Santa Rita, C.P. 23096, La Paz, Baja California Sur, Mexico. krla_2307@hotmail.com.; Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prolongación Av. Niños Héroes s/n, C.P. 77580 Puerto Morelos, Quintana Roo, Mexico. krla_2307@hotmail.com., Ortiz-Hernández MC; El Colegio de la Frontera Sur, Unidad Chetumal Avenida Centenario Km 5.5, s/n Col. Pacto Obrero Campesino Chetumal, C.P. 77014, Quintana Roo, Mexico., Carrillo L; El Colegio de la Frontera Sur, Unidad Chetumal Avenida Centenario Km 5.5, s/n Col. Pacto Obrero Campesino Chetumal, C.P. 77014, Quintana Roo, Mexico., Sánchez A; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Avenida IPN, s/n Colonia Playa Palo de Santa Rita, C.P. 23096, La Paz, Baja California Sur, Mexico.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Mar 20. Date of Electronic Publication: 2024 Mar 20.
DOI: 10.1007/s11356-024-32818-9
Abstrakt: Submarine groundwater discharges (SGD) have been associated with important sources of nutrients between the land and oceans that can generate eutrophication conditions. This study aims to analyze the behavior of nitrogen and phosphorus using the mixing curve method, to examine the variation of the trophic state using the Karydis Index, and to evaluate the δ 15 N in benthic organisms to trace the origin of nitrogen in neap tide (November) and spring tide (January) in the Manatí Cenote, and Nohoch-Teek reef lagoon in the Mexican Caribbean. Nitrogen and phosphate enrichment was in the Manatí Cenote during neap and spring tides. This enrichment was particularly noticeable in the reef lagoon during low tides in the areas influenced by SGD. In the Cenote, differences in the nitrate trophic state were observed, indicating an eu-mesotrophic condition during neap tide and a mesotrophic condition during spring tide. However, no significant differences were observed for ammonium (oligo-mesotrophic), nitrites, or phosphate compounds (oligotrophic). The trophic state reef lagoon exhibited a similar pattern but with different spatial variations. In both systems, phosphorus was a limiting nutrient, while δ 15 N suggested anthropogenic nitrogen uptake by several benthic organisms.
(© 2024. The Author(s).)
Databáze: MEDLINE
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