Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean

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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 fertiliz...

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Autores principales:	Alcoverro, T., Romero, J., Duarte, C.M., López, N.I.
Formato:	JOUR
Materias:	Growth Nitrogen Phosphorus Retranslocation Seasonality Posidonia oceanica Posidoniaceae growth nutrient limitation seagrass seagrass meadows seasonality Spain, Catalonia, Costa Brava
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01718630_v146_n1-3_p155_Alcoverro
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01718630_v146_n1-3_p155_Alcoverro
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spelling	todo:paper_01718630_v146_n1-3_p155_Alcoverro2023-10-03T15:07:29Z Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean Alcoverro, T. Romero, J. Duarte, C.M. López, N.I. Growth Nitrogen Phosphorus Retranslocation Seasonality Posidonia oceanica Posidonia oceanica Posidoniaceae growth nutrient limitation seagrass seagrass meadows seasonality Spain, Catalonia, Costa Brava 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01718630_v146_n1-3_p155_Alcoverro
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Growth Nitrogen Phosphorus Retranslocation Seasonality Posidonia oceanica Posidonia oceanica Posidoniaceae growth nutrient limitation seagrass seagrass meadows seasonality Spain, Catalonia, Costa Brava
spellingShingle	Growth Nitrogen Phosphorus Retranslocation Seasonality Posidonia oceanica Posidonia oceanica Posidoniaceae growth nutrient limitation seagrass seagrass meadows seasonality Spain, Catalonia, Costa Brava 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
topic_facet	Growth Nitrogen Phosphorus Retranslocation Seasonality Posidonia oceanica Posidonia oceanica Posidoniaceae growth nutrient limitation seagrass seagrass meadows seasonality Spain, Catalonia, Costa Brava
description	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.
format	JOUR
author	Alcoverro, T. Romero, J. Duarte, C.M. López, N.I.
author_facet	Alcoverro, T. Romero, J. Duarte, C.M. López, N.I.
author_sort	Alcoverro, T.
title	Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
title_short	Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
title_full	Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
title_fullStr	Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
title_full_unstemmed	Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
title_sort	spatial and temporal variations in nutrient limitation of seagrass posidonia oceanica growth in the nw mediterranean
url	http://hdl.handle.net/20.500.12110/paper_01718630_v146_n1-3_p155_Alcoverro
work_keys_str_mv	AT alcoverrot spatialandtemporalvariationsinnutrientlimitationofseagrassposidoniaoceanicagrowthinthenwmediterranean AT romeroj spatialandtemporalvariationsinnutrientlimitationofseagrassposidoniaoceanicagrowthinthenwmediterranean AT duartecm spatialandtemporalvariationsinnutrientlimitationofseagrassposidoniaoceanicagrowthinthenwmediterranean AT lopezni spatialandtemporalvariationsinnutrientlimitationofseagrassposidoniaoceanicagrowthinthenwmediterranean
_version_	1807321096053063680

Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean

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