2024-03-29T06:40:45Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1500482018-07-06T08:07:32Zcom_10261_88com_10261_8col_10261_341
2017-05-19T12:30:31Z
urn:hdl:10261/150048
Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean
Alcoverro, Teresa
Romero, Javier
Duarte, Carlos M.
López, Nancy I.
Nitroogen
Seasonality
Growth
Phosphorus
Retranslocation
Este artículo contiene 7 páginas, 5 figuras.
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 PM dissolved inorganic nitrogen and 9 pM soluble reactive phosphorus) dissolved inorganic nutrient
concentrations in sediment pore waters showing the greatest response to fertlhzation. 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, wh~ch 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 Nutnent
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.
2017-05-19T12:30:31Z
2017-05-19T12:30:31Z
1997
artículo
Marine Ecology - Progress Series 146 : 155-161 (1997)
0171-8630
http://hdl.handle.net/10261/150048
1616-1599
eng
Publisher's version
http://www.int-res.com/abstracts/meps/v146/p155-161/
Sí
openAccess
Inter Research