The role of Ulva spp. as a temporary nutrient sink in a coastal lagoon with oyster cultivation and upwelling influence

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• 作者：José A. Zertuche-González (1) r> Víctor F. Camacho-Ibar (1) r> Isaí Pacheco-Ruíz (1) r> Alejandro Cabello-Pasini (1) r> Luis A. Galindo-Bect (1) r> José M. Guzmán-Calderón (1) r> Víctor Macias-Carranza (1) r> Julio Espinoza-Avalos (2) r>
• 关键词：N/P ratio ; Seaweed biomass ; Ulva ; Nutrient sink ; Seagrass beds ; Green tide
• 刊名：Journal of Applied Phycology
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：21
• 期：6
• 页码：729-736
• 全文大小：260KB
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• 作者单位：José A. Zertuche-González (1) r> Víctor F. Camacho-Ibar (1) r> Isaí Pacheco-Ruíz (1) r> Alejandro Cabello-Pasini (1) r> Luis A. Galindo-Bect (1) r> José M. Guzmán-Calderón (1) r> Víctor Macias-Carranza (1) r> Julio Espinoza-Avalos (2) r>r>1. Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas, Apartado Postal 453, Ensenada, Baja California, 22860, Mexico r> 2. ECOSUR, Apartado postal 424, Chetumal, Quintana Roo, 77000, Mexico r>

文摘

Bahía San Quintín is a coastal lagoon with large Ulva biomass and upwelling influence. Previous observations suggest that Ulva has increased recently as a result of oyster cultivation. To evaluate the possible role of Ulva as a temporary nutrient sink, biomass and tissue C, N, and P were determined seasonally. Maximum biomass was present during spring and early summer (1,413-,160?t (dry)) covering about 400?ha. However, the biomass decreased to 35?t (dry) by winter. The mean annual percentage of Ulva C, N, and P was 28%, 2%, and 0.14%, respectively. This study shows that Ulva can store up to 28?t of N and 2?t of P in Bahía San Quintín during spring–summer. Ulva may be displacing the seagrass Zostera marina subtidal beds. A partial removal of the seaweed would reduce the risk of eutrophication and the displacement of eelgrass beds.