Phosphorus enrichment effects on interactions among the ecosystem components in a long-hydroperiod oligotrophic marsh in Everglades National Park

Dailey, Susan K.

doi:10.25148/etd.fi14061588

Cited by 2 publications

(2 citation statements)

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“…In both cases, porewater was extracted from porewater ''sippers'' (aquarium air stones equipped with fine Tygon 1 tubing and sealed with teflon tape; Dailey, 2000) placed 10 cm into the soil. Porewater was sampled using a 120 mL syringe and filtered through Whatman GF/F filters.…”

Section: Soil Characteristicsmentioning

confidence: 99%

Ecosystem structure, nutrient dynamics, and hydrologic relationships in tree islands of the southern Everglades, Florida, USA

Gann

Childers

Rondeau

2005

Forest Ecology and Management

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Section: Soil Characteristicsmentioning

confidence: 99%

Ecosystem structure, nutrient dynamics, and hydrologic relationships in tree islands of the southern Everglades, Florida, USA

Gann

Childers

Rondeau

2005

Forest Ecology and Management

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“…We measured oxidation-reduction potential (Eh), soil pH, and soil temperature bimonthly on each island (10 cm depth) with an Orion meter (Model #250A; Thermo Electron Corporation, Waltham, MA, USA). To assess soil nutrient availability, we sampled island porewater using porewater ''sippers'' placed 10 cm into the soil, extracted using a 120 mL syringe (Dailey 2000), and filtered through Whatman GF/F filters (Whatman International Ltd., Kent, UK). Filtered samples were analyzed for soluble reactive phosphorus (SRP), ammonium (NH 4 + ), nitrate (NO 3 ) ), nitrite (NO 2 ) ), and dissolved organic carbon (DOC).…”

Section: Soilsmentioning

confidence: 99%

Relationships Between Hydrology and Soils Describe Vegetation Patterns in Seasonally Flooded Tree Islands of the Southern Everglades, Florida

Gann

Childers

2006

Plant Soil

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Tree island ecosystems are important and distinct features of Florida Everglades wetlands. We described the inter-relationships among abiotic factors describing seasonally flooded tree islands and characterized plant-soil relationships in tree islands occurring in a relatively unimpacted area of the Everglades. We used Principal Components Analysis (PCA) to reduce our multi-factor dataset, quantified forest structure and vegetation nutrient dynamics, and related these vegetation parameters to PCA summary variables using linear regression analyses. We found that, of the 21 abiotic parameters used to characterize the ecosystem structure of seasonally flooded tree islands, 13 parameters were significantly correlated with four principal components, and they described 78% of the variance among the study islands. Most variation was described by factors related to soil oxidation and hydrology, exemplifying the sensitivity of tree island structure to hydrologic conditions. PCA summary variables describing tree island structure were related to variability in Chrysobalanus icaco (L.) canopy cover, Ilex cassine (L.) and Salix caroliniana (Michx.) canopy cover, Myrica cerifera (L.) plot frequency, litter turnover, % phosphorus resorption of co-dominant species, and nitrogen nutrient-use efficiency. This study supported findings that vegetation characteristics can be sensitive indicators of variability in tree island ecosystem structure. This study produced valuable, information which was used to recommend ecological targets (i.e. restoration performance measures) for seasonally flooded tree islands in more impacted regions of the Everglades landscape.

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Phosphorus enrichment effects on interactions among the ecosystem components in a long-hydroperiod oligotrophic marsh in Everglades National Park

Cited by 2 publications

References 0 publications

Ecosystem structure, nutrient dynamics, and hydrologic relationships in tree islands of the southern Everglades, Florida, USA

Ecosystem structure, nutrient dynamics, and hydrologic relationships in tree islands of the southern Everglades, Florida, USA

Relationships Between Hydrology and Soils Describe Vegetation Patterns in Seasonally Flooded Tree Islands of the Southern Everglades, Florida

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