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

Teresa Alcoverro, Javier Romero*, Carlos Duarte, Nancy I. López

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)155-161
Number of pages7
JournalMarine Ecology Progress Series
Volume146
Issue number1-3
DOIs
StatePublished - Jan 30 1997

Keywords

  • Growth
  • Nitrogen
  • Phosphorus
  • Retranslocation
  • Seasonality

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

Fingerprint

Dive into the research topics of 'Spatial and temporal variations in nutrient limitation of seagrass Posidonia oceanica growth in the NW Mediterranean'. Together they form a unique fingerprint.

Cite this