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Abstract:

The extent and seasonality of nutrient limitation of Posidonia oceanica (L.) Delile in the Costa Brava littoral (NW Mediterranean) in 5 meadows was investigated by means of repeated nutrient additions along a year cycle. Nutrient additions had a modest effect on leaf growth. The response to fertilization varied considerably among meadows, with those meadows consistently maintaining low (300 μM dissolved inorganic nitrogen and 9 μM soluble reactive phosphorus) dissolved inorganic nutrient concentrations in sediment pore waters showing the greatest response to fertilization. The seasonality of the growth response to fertilization was consistent with calculated nutrient deficiencies, which were greatest in late spring and summer. Nutrient deficiency was alleviated in the fall, partially due to reduced growth, but also to nutrient reclamation from old leaves, which represented 20% and 18% of the annual nitrogen and phosphorus incorporation, respectively. The relative deficiency of nitrogen and phosphorus differed among sites, with the highest response found in P-deficient meadows. Nutrient limitation of P. oceanica meadows was greatest in late spring and summer, but differed greatly in magnitude and nature (nitrogen vs phosphorus) depending on local nutrient regimes.

Registro:

Documento: Artículo
Título:Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
Autor:Alcoverro, T.; Romero, J.; Duarte, C.M.; López, N.I.
Filiación:Departament d'Ecologia, Universitat de Barcelona, Avgda Diagonal 645, E-08028 Barcelona, Spain
Ctr. d'Estudis Avancats de Blanes, CSIC, Cami de Santa Barbara s/n, E-17300 Blanes, Girona, Spain
Depto. de Quim. Biológica, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428-Buenos Aires, Argentina
Palabras clave:Growth; Nitrogen; Phosphorus; Retranslocation; Seasonality; Posidonia oceanica; Posidonia oceanica; Posidoniaceae; growth; nutrient limitation; seagrass; seagrass meadows; seasonality; Spain, Catalonia, Costa Brava
Año:1997
Volumen:146
Número:1-3
Página de inicio:155
Página de fin:161
DOI: http://dx.doi.org/10.3354/meps146155
Título revista:Marine Ecology Progress Series
Título revista abreviado:MAR. ECOL. PROG. SER.
ISSN:01718630
CODEN:MESED
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_01718630_v146_n1-3_p155_Alcoverro.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01718630_v146_n1-3_p155_Alcoverro

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Citas:

---------- APA ----------
Alcoverro, T., Romero, J., Duarte, C.M. & López, N.I. (1997) . Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean. Marine Ecology Progress Series, 146(1-3), 155-161.
http://dx.doi.org/10.3354/meps146155
---------- CHICAGO ----------
Alcoverro, T., Romero, J., Duarte, C.M., López, N.I. "Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean" . Marine Ecology Progress Series 146, no. 1-3 (1997) : 155-161.
http://dx.doi.org/10.3354/meps146155
---------- MLA ----------
Alcoverro, T., Romero, J., Duarte, C.M., López, N.I. "Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean" . Marine Ecology Progress Series, vol. 146, no. 1-3, 1997, pp. 155-161.
http://dx.doi.org/10.3354/meps146155
---------- VANCOUVER ----------
Alcoverro, T., Romero, J., Duarte, C.M., López, N.I. Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean. MAR. ECOL. PROG. SER. 1997;146(1-3):155-161.
http://dx.doi.org/10.3354/meps146155