Assessment of eutrophication in a subtropical lagoon in the Gulf of California

Autor:	Javier Enríquez-Flores, Lourdes Morquecho, Renato A. Mendoza-Salgado, Aída Martínez-López, Thelma Michelle Ruiz-Ruiz, José Alfredo Arreola-Lizárraga, Lía C. Méndez-Rodríguez
Rok vydání:	2016
Předmět:	0106 biological sciences geography geography.geographical_feature_category Ecology Primary producers 010604 marine biology & hydrobiology Estuary Subtropics 010501 environmental sciences Management Monitoring Policy and Law Aquatic Science 01 natural sciences Oceanography Environmental science Dominance (ecology) Ecosystem Eutrophication Bay 0105 earth and related environmental sciences Trophic level
Zdroj:	Aquatic Ecosystem Health & Management. 19:382-392
ISSN:	1539-4077 1463-4988
DOI:	10.1080/14634988.2016.1242950
Popis:	Understanding the susceptibility of coastal ecosystems to nutrient loads from anthropogenic sources and the extent of eutrophication in subtropical and tropical estuaries is still a challenge. This study assessed eutrophication in Guaymas Bay, a subtropical lagoon that receives nutrient-rich urban wastewater discharges. Eutrophication was evaluated by means of the Assessment of Estuarine Trophic Status model. Our results showed that the trophic status of Guaymas Bay was “good.” It is important to consider that: (1) the dissolved oxygen and chlorophyll a levels observed are indicative of a healthy ecosystem, and (2) the key factors explaining this finding are the high susceptibility to eutrophication of the lagoon and the dominance of macroalgae species that respond to nutrient enrichment. This implies that the Overall Eutrophic Condition Index of the Assessment of Estuarine Trophic Status model is a valuable tool for use as an eutrophication indicator based on the abundance of primary producers (macroalgae and phytoplankton). One source of uncertainty in the application of the model to this semi-arid coastal lagoon deals with estimating its susceptibility to eutrophication. The model showed that the lagoon is a highly sensitive ecosystem; however, significant factors are in place, such as an adequate water exchange, that reduce its susceptibility to eutrophication. In conclusion, the trophic status observed at Guaymas Bay is acceptable; however, an environmental management plan is necessary to prevent any adverse effects of eutrophication.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2441b0f35faa5f9c063c402aee735f https://doi.org/10.1080/14634988.2016.1242950 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.