Work

Nitrogen and phosphorus in Ulva sp. in the Galician Rias Bajas (northwest Spain): Seasonal fluctuations and influence on growth

Year: 1999

Type: article

Abstract: Coastal eutrophication has given cause for increasing concern. The Galician rias are ecosystems very sensitive to this phenomenon. In the present paper, we evaluate the possible nutrient limitation in Ulva sp., a green-tide alga. Variations in tissue nitrogen (N) and phosphorus (P), as well as growth rate, were determined over a complete seasonal cycle for Ulva sp. collected in the Rias Bajas (northwest Spain). Minimum levels of both nutrients were reached in spring and summer and maximum in winter. The low tissue P concentrations were striking. There was a parallelism between the evolution of the growth rate and nutrient contents. The most significant correlation found between growth rate and tissue P, and the equations established by stepwise multiple regression procedures, suggest that P may play a more important role than N in the limitation of productivity of Ulva sp. in the Galician Rias Bajas.

Source: DIGITAL.CSIC (Spanish National Research Council (CSIC))

Authors: Rubén Villares, Xabier Aranburu Puente, A. Carballeira

Language: English

Topic: Marine and coastal plant biology

Subfield: Oceanography

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDGs: Clean water and sanitation, Life below water, Zero hunger

Open Access status: green

OpenAlex ID: W1654785643

FWCI:

Cites: 31

Cited by: 21

Related to: 10