Influence of hydrologic regime and vegetation on phosphorus retention in Everglades stormwater treatment area wetlands

2004 ◽  
Vol 18 (2) ◽  
pp. 343-355 ◽  
Author(s):  
John R. White ◽  
K. Ramesh Reddy ◽  
M. Z. Moustafa

2012 ◽  
Vol 41 (5) ◽  
pp. 1661-1673 ◽  
Author(s):  
Forrest E. Dierberg ◽  
Thomas A. DeBusk ◽  
Jaimee L. Henry ◽  
Scott D. Jackson ◽  
Stacey Galloway ◽  
...  


2020 ◽  
Author(s):  
Paul Julian ◽  
Todd Z. Osborne

AbstractChanges of dissolved oxygen (DO) in aquatic ecosystems integrates dynamic biological, physical and chemical processes that control the rate of ecosystem metabolism. Aquatic ecosystem metabolism can be characterized by the diel change in DO changes over time and is expressed as the net aquatic productivity (NAP). This study investigated aquatic metabolism of dominant emergent and submerged aquatic vegetation (EAV and SAV, respectively) within two treatment flow-ways (FW) of Stormwater Treatment Area 2 (STA-2) in the Everglades ecosystem. The hypothesis of this study is that aquatic metabolism will differ between aquatic vegetation communities with SAV communities will have a greater GPP and ER rate than EAV communities driven by biophysical, hydrodynamic and biogeochemical differences between systems. Aquatic metabolism observed in this study vary spatially (along FWs) and temporally (diel to days) controlled by different effects related biological, physical and chemical processes. This study suggests that ecosystem metabolism is controlled differently across FWs with varying levels of response to loading/transport and water column attributes resulting in differences in organic matter accumulation, C turnover and phosphorus cycling.



2017 ◽  
Author(s):  
Paul Julian ◽  
Stefan Gerber ◽  
Rupesh K. Bhomia ◽  
Jill King ◽  
Todd Z. Osborne ◽  
...  

AbstractNutrient homeostasis relates ambient stoichiometric conditions in an environment to the stoichiometry of living entities of the ecosystem. In wetland ecosystems, vegetation can be a large, highly variable and dynamic sink of nutrients. This study investigated stoichiometric homeostasis of dominant emergent and submerged aquatic vegetation (EAV and SAV, respectively) within two treatment flow-ways (FW) of Everglades Stormwater Treatment Area 2 (STA-2). These FW encompass a large gradient in plant nutrient availability. The hypotheses of this study is that wetland vegetation is non-homeostatic relative to ambient nutrients and consequently nutrient resorption will not vary along the nutrient gradient. We developed a framework to investigate how vegetation uptake and resorption of nutrients contribute separately to homeostasis. Overall, the wetland vegetation in this study was non-homeostatic with respect to differential uptake of nitrogen (N) vs. phosphorus (P). Resorption evaluated for EAV was high for P and moderate for N, resorption efficiency did not significantly vary along the gradient and therefore did not affect overall homeostatic status. Nutrient addition experiments may help to compensate for some of the limitation of our study, especially with respect to resolving the primary nutrient source (organic vs. inorganic sources, water vs. soil compartment) and nutrient utilization rates.



2021 ◽  
pp. 147447402110036
Author(s):  
Aurora Fredriksen

In the spring of 2006 wild flamingos returned to Florida, though not to the places their kind had inhabited 100 years and more ago at the southern edge of the Everglades and the Florida Keys. Instead this group of flamingos alighted 80 miles northward in Palm Beach County’s Stormwater Treatment Area 2 (STA-2), a human-made facility for filtering anthropogenic pollutants from storm runoff. This paper takes the return of wild flamingos to Florida as a case for thinking through haunting, ruination and encounters in what I call ‘the ordinary Anthropocene’: the ongoing, everyday more-than-human relationships, actions and less-than-planetary assemblages through which the Anthropocene is sensed and lived. After setting out a case for thinking with haunting, ruination and encounter as a way of making sense in the ordinary Anthropocene, I trace three interwoven narrative threads that unspool from the encounter with the STA-2 flamingos: First, I trace the transfiguration of living wild flamingos into idealised symbols of tropical dreamworlds over the 20th century. This leads me sideways to the present-absence of flamingos in the mid-century writings of Rachel Carson and through her backwards to John J. Audubon and the genocidal ruinations of the 19th century as they flicker in the margins of his ornithological writings. I end by returning to the present, to the encounter with STA-2 flamingos in the ongoing moment of living with others in the late capitalist ecologies of south Florida. The conclusion considers what might be taken forward, into the uncertain future, from this telling.



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