Cited by 134Marine and coastal plant biologyMarine and coastal ecosystemsMarine Biology and Ecology Research

Responses of seagrass communities to fertilization along a gradient of relative availability of nitrogen and phosphorus in a carbonate environment

Ferdie, Meredith, Fourqurean, James W.·2004·Limnology and Oceanography

Abstract

Patterns of relative nutrient availability in south Florida suggest spatial differences regarding the importance of nitrogen (N) and phosphorus (P) to benthic primary producers. We did a 14‐month in situ fertilization experiment to test predictions of N and P limitation in the subtropical nearshore marine waters of the upper Florida Keys. Six sites were divided into two groups (nearshore, offshore) representing the endpoints of an N: P stoichiometric gradient. Twenty‐four plots were established at each site with six replicates of each treatment (+N, +P, +N+P, control), for a total of 144 experimental plots. The responses of benthic communities to N and P enrichment varied appreciably between nearshore and offshore habitats. Offshore seagrass beds were strongly limited by nitrogen, and nearshore beds were affected by nitrogen and phosphorus. Nutrient addition at offshore sites increased the length and aboveground standing crop of the two seagrasses, Thalassia testudinum and Syringodium filiforme, and growth rates of T. testudinum. Nutrient addition at nearshore sites increased the relative abundance of macroalgae, epiphytes, and sediment microalgae. N limitation of seagrass in this carbonate system was clearly demonstrated. However, added phosphorus was retained in the system more effectively than N, suggesting that phosphorus might have important long‐term effects on these benthic communities. The observed species‐specific responses to nutrient enrichment underscores the need…

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Crossref · 10.4319/lo.2004.49.6.2082

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  • Previous studies have effectively used these enrichment methods to increase nutrient availability to the above- and below-ground biomass of benthic macrophytes, as well as the epiphyte community in South Florida.

    “Previous studies have effectively used these enrichment methods to increase nutrient availability to the above- and below-ground biomass of benthic macrophytes, as well as the epiphyte community in South Florida (Armitage & Fourqurean 2009; Armitage, Frankovich & Fourqurean 2011; Ferdie & Fourqurean 2004; Frankovich et al. 2009).”

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Authors
Ferdie, M., & Fourqurean, J. W.
Affiliations
Florida International University (US)
Corresponding author
Fourqurean, James W.
Venue
Limnology and Oceanography
Publisher
Wiley
Published
2004-11
Volume
49
Issue
6
Pages
2082-2094
ISSN
  • 0024-3590 (ISSN-L)
  • 1939-5590
OpenAlex
W2132349295
Cited by
134
References
45
Citations by year
2026: 4 · 2025: 7 · 2024: 5 · 2023: 3 · 2022: 10 · 2021: 5 · 2020: 4 · 2019: 7 · 2018: 6 · 2017: 9 · 2016: 8 · 2015: 4 · 2014: 8 · 2013: 6 · 2012: 6
FWCI
4.49
Type
journal article
Language
en
Open access
closed
Locations
  • Limnology and Oceanography (publishedVersion)
  • Florida International University Digital Commons (Florida International University) (submittedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal plant biology
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
Keywords
seagrass, nutrient limitation, nitrogen limitation, phosphorus limitation, nutrient enrichment, Thalassia testudinum, Syringodium filiforme, N:P stoichiometry, benthic communities, eutrophication, carbonate environments, Florida Keys, seaweed, epiphytes

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