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Titolo:
Phosphorus biogeochemistry and the impact of phosphorus enrichment: Why isthe everglades so unique?
Autore:
Noe, GB; Childers, DL; Jones, RD;
Indirizzi:
Florida Int Univ, SE Environm Res Ctr, Miami, FL 33199 USA Florida Int Univ Miami FL USA 33199 Environm Res Ctr, Miami, FL 33199 USA Florida Int Univ, Dept Sci Biol, Miami, FL 33199 USA Florida Int Univ Miami FL USA 33199 v, Dept Sci Biol, Miami, FL 33199 USA
Titolo Testata:
ECOSYSTEMS
fascicolo: 7, volume: 4, anno: 2001,
pagine: 603 - 624
SICI:
1432-9840(200111)4:7<603:PBATIO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
NORTHERN FLORIDA EVERGLADES; CLADIUM-JAMAICENSE CRANTZ; CONSERVATION AREA 2A; FRESH-WATER WETLAND; EUTROPHICATION GRADIENT; PEAT SOILS; NUTRIENT ENRICHMENT; PLANT-COMMUNITIES; PERIPHYTON COMMUNITIES; SPATIAL-DISTRIBUTION;
Keywords:
Everglades; phosphorus; biogeochemistry; wetlands; ecosystem; nutrient cycling; oligotrophy; eutrophy;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
127
Recensione:
Indirizzi per estratti:
Indirizzo: Jones, RD Florida Int Univ, SE Environm Res Ctr, Miami, FL 33199 USA Florida Int Univ Miami FL USA 33199 es Ctr, Miami, FL 33199 USA
Citazione:
G.B. Noe et al., "Phosphorus biogeochemistry and the impact of phosphorus enrichment: Why isthe everglades so unique?", ECOSYSTEMS, 4(7), 2001, pp. 603-624

Abstract

The Florida Everglades is extremely oligotrophic and sensitive to small increases in phosphorus (P) concentrations. P enrichment is one of the dominant anthropogenic impacts on the ecosystem and is therefore a main focus of restoration efforts. In this review, we synthesize research on P biogeochemistry and the impact of P enrichment on ecosystem structure and function inthe Florida Everglades. There are clear patterns of increased P concentrations and altered structure and processes along nutrient-enrichment gradients in the water, periphyton, soils, macrophytes, and consumers. Periphyton, an assemblage of algae, bacteria, and associated microfauna, is abundant and has a large influence on phosphorus cycling in the Everglades. The oligotrophic Everglades is P-starved, has lower P concentrations and higher nitrogen-phosphorus (N:P) ratios, and has oxidized to only slightly reduced soilprofiles compared to other freshwater wetland ecosystems. Possible generalcauses and indications of P limitation in the Everglades and other wetlands include geology, hydrology, and dominance of oxidative microbial nutrientcycling. The Everglades may be unique with respect to P biogeochemistry because of the multiple causes of P limitation and the resulting high degree of limitation.

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Documento generato il 02/04/20 alle ore 00:10:45