Phosphorus Biogeochemistry and the Impact of Phosphorus Enrichment: Why Is the Everglades so Unique?

Noe, Gregory B.; Childers, Daniel L.; Jones, Ronald D.

doi:10.1007/s10021-001-0032-1

Cited by 289 publications

(260 citation statements)

References 94 publications

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“…Also iron(II) hydroxide present in suspended particles or colloids is partially responsible for phosphorus adsorption. Those processes depend on the presence of dissolved oxygen and slightly heightened pH during the period when the process of intense photosynthesis is taking place [21][22][23][24]. Also in our studies we noted strong correlations between phosphorus and those metals.…”

supporting

confidence: 70%

Water Quality in the Central Reach of the Ina River (Western Pomerania, Poland)

Nędzarek¹,

Tórz²,

Bonisławska³

et al. 2015

Pol. J. Environ. Stud.

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Physical and chemical properties of river water are subject to both temporal and spatial changes and depend mainly on the environment of the catchment area and its condition. Continuity of ecological processes and the gradient character of river zones (so-called river continuum) are characteristic features of rivers. The flow of matter and energy is one-directional, the same as the direction of the river flow, and a gradual increase of dissolved substances concentrations is natural [1,2]. Human activity is responsible for deviations from a model water flow because geochemical cycles of carbon, nitrogen, and phosphorus undergo significant modifications [3]. The most important anthropogenic factors influencing river ecosystems include agriculture, industry, and urbanization. The supply of pollution from these sources affects water quality in the river and its biocenosis. It is especially damaging for small watercourses that constitute environmentally valuable ecosystems. Therefore, constant monitoring of water quality, providing the possibility to trace the sources of pollution, is an important element of natural environment protection.In light of the above, the objective of the present study was to analyze and assess select physico-chemical indicators of water in the middle reaches of the Ina River and point out those that determine its quality. The analysis of horizontal variability of the studied water quality indicators allowed for assessing purity of the examined stretch of the Ina River and identifying the sources of pollution.Pol. J. Environ. Stud. Vol. 24, No. 1 (2015), 207-214 AbstractOur paper presents a study on the middle reaches of the Ina River. Select physical and chemical indicators were analyzed in order to evaluate water quality. It was determined that the studied river was subjected to strong anthropopressure, and factors declassifying river water included COD Cr , TP, general hardness, and alcalinity. A high level of biogenic elements was additionally increased by pollution discharged to the river in the proximity of a factory specializing in agricultural production and processing food and agricultural produce near the town of Stargard Szczeciński. The process of self-purification was noted, which can be considered as a factor modifying changes and dynamics of nitrogen and phosphorus in the studied river, leading to an internal enrichment with biogenic elements. Those processes were multi-directional as confirmed by PCA analysis, where component 1 accounted for just 36.7% of the total variance, and the total variance exceeding 90.0% was only noted for 7 components.

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supporting

confidence: 70%

Water Quality in the Central Reach of the Ina River (Western Pomerania, Poland)

Nędzarek¹,

Tórz²,

Bonisławska³

et al. 2015

Pol. J. Environ. Stud.

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“…Prairies are inundated approximately 3-7 months per year, and exhibit high plant diversity. They are exceptionally oligotrophic, with several factors contributing to their extreme P-limitation, the most significant being P-immobilization by periphyton (Noe et al 2001).…”

Section: Study Sitementioning

confidence: 99%

“…P-availability and mobility within the Everglades system are primarily controlled by calcium solubility and organic P metabolism/ mineralization (Reddy et al 1998), both of which are decelerated by prolonged flooding and alkaline pH. As a result, most Everglades P exists in biologically unavailable pools, immobilized to a large degree by periphyton (Noe et al 2001). The significant PO 4 -P gradient found between tree islands and adjacent marshes in the Marl Prairie may result from (1) a greater periphyton contribution in Marl Prairie marshes compared with slough marshes, and (2) the fact that organic tree island soils in the Marl Prairie support more active microbial activity than adjacent mineral soils (Fitter and Hay 2002).…”

Section: Sidroxylon Reclinatummentioning

confidence: 99%

Across-scale patterning of plant-soil–water interactions surrounding tree islands in Southern Everglades landscapes

Hanan

Ross

2009

Landscape Ecol

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The freshwater Everglades is a complex system containing thousands of tree islands embedded within a marsh-grassland matrix. The tree islandmarsh mosaic is shaped and maintained by hydrologic, edaphic and biological mechanisms that interact across multiple scales. Preserving tree islands requires a more integrated understanding of how scale-dependent phenomena interact in the larger freshwater system. The hierarchical patch dynamics paradigm provides a conceptual framework for exploring multiscale interactions within complex systems. We used a three-tiered approach to examine the spatial variability and patterning of nutrients in relation to site parameters within and between two hydrologically defined Everglades landscapes: the freshwater Marl Prairie and the Ridge and Slough. Results were scaledependent and complexly interrelated. Total carbon and nitrogen patterning were correlated with organic matter accumulation, driven by hydrologic conditions at the system scale. Total and bioavailable phosphorus were most strongly related to woody plant patterning within landscapes, and were found to be 3 to 11 times more concentrated in tree island soils compared to surrounding marshes. Below canopy resource islands in the slough were elongated in a downstream direction, indicating soil resource directional drift. Combined multi-scale results suggest that hydrology plays a significant role in landscape patterning and also the development and maintenance of tree islands. Once developed, tree islands appear to exert influence over the spatial distribution of nutrients, which can reciprocally affect other ecological processes.

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“…For example, Davis (1994) estimated that, as a result of increased nutrient loading from drained agricultural lands, annual phosphorus (P) inputs to the Water Conservation Areas (WCAs) increased from historic levels of approximately 129 metric tons (mt) to levels of approximately 376 mt. Changes in hydrology combined with increased nutrient loading have not only led to a rapid expansion of Typha domingensis (cattail) in areas that receive water directly from the Everglades Agricultural Area (EAA) (Newman, Grace, & Koebel, 1996;Noe et al, 2001), but also to significant changes in ecosystem structure and function (Davis, 1991;Koch & Reddy, 1992;Drake et al, 1996;Newman et al, 1998;McCormick & Stevenson, 1998).…”

mentioning

confidence: 99%

Recent Changes in Soil Total Phosphorus in the Everglades: Water Conservation Area 3

Bruland

Osborne

Reddy

et al. 2006

Environ Monit Assess

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We assessed recent changes in the distribution of soil total phosphorus (TP) in Water Conservation Area 3 (WCA-3) of the Everglades. Soil cores were collected in 1992 and 2003 at 176 sites. To reflect hydrologic boundaries within the system, WCA-3 was divided into three zones (3AN, 3AS, and 3B). Total P was mapped on both a mass (TPm) and a volumetric basis (TPv) to determine if spatial distributions varied depending on the choice of units.Interpolated maps for both years showed that the highest levels of TPm were located in 3AN and in boundary areas of all zones that received surface water inputs of P from canals. Increases in TPm were greatest in central 3AN in an area adjacent to the Miami Canal that received inputs from a water control structure. Interpolated maps for TPv illustrated that a hotspot present in 1992 had disappeared by 2003. The highest levels of TPv in 2003 were located in northwestern 3AN, a region of WCA-3 that has been chronically overdrained and burned in 1999. From 1992 to 2003, increases in TPm were observed for 53% of the area of WCA-3, while only 16% of WCA-3 exhibited increases in TPv. In 1992, approximately 21% of WCA-3 had TPm concentrations in the 0-10 cm layer > 500 mg kg −1 , indicating P enrichment beyond historic levels. Eleven years later, 30% of the area of WCA-3 had TPm > 500 mg kg −1 . This indicated that during this period, the area of WCA-3 with enriched TPm concentrations increased about one % year −1 .

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Phosphorus Biogeochemistry and the Impact of Phosphorus Enrichment: Why Is the Everglades so Unique?

Cited by 289 publications

References 94 publications

Water Quality in the Central Reach of the Ina River (Western Pomerania, Poland)

Water Quality in the Central Reach of the Ina River (Western Pomerania, Poland)

Across-scale patterning of plant-soil–water interactions surrounding tree islands in Southern Everglades landscapes

Recent Changes in Soil Total Phosphorus in the Everglades: Water Conservation Area 3

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