Organic phosphorus in the aquatic environment

Baldwin, Darren S.

doi:10.1071/en13151

Cited by 96 publications

(66 citation statements)

References 138 publications

(215 reference statements)

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“…Phospholipids contributed to reciprocal transformation of P in sediment, and migration from sediments was important for the P cycle of lakes. Significance of aquatic macrophytes and algae in internal loading of P for eutrophication Organic P could be one of the major fractions of P in many aquatic ecosystems (Baldwin 2013). Aquatic macrophytes and algae were sources of four categories of components of P in Tai Lake, including orthophosphate, orthophosphate monoesters, orthophosphate diester, and pyrophosphate, but not phosphonate or polyphosphate (Fig.…”

Section: Naoh-edta Extractable P From Aquatic Macrophytes and Algaementioning

confidence: 99%

“…For most lakes, phosphorus (P) is the limiting factor that contributes to eutrophication (Baldwin 2013;Giles et al 2015). Though external loading of nutrients from agricultural and urban sources contributes to eutrophication, release of nutrients from internal loading to surface waters has also been shown to be an important factor maintaining eutrophication of lakes.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of phosphorus forms in lake macrophytes and algae by solution 31P nuclear magnetic resonance spectroscopy

Feng

Zhu

et al. 2015

Environ Sci Pollut Res

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Debris from aquatic macrophytes and algae are important recycling sources of phosphorus (P), which can result in continuing blooms of algae by recycling bioavailable P in the eutrophic lakes. However, knowledge of forms of P in aquatic macrophytes and algae and their contribution to internal loads of P in lakes is limited. Without such knowledge, it is difficult to develop appropriate strategies to remediate and or restore aquatic ecosystems that have become eutrophic. Therefore, in this work, P was extracted from six types of aquatic macrophytes and algae collected from Tai Lake of China and characterized by use of solution 31 P-nuclear magnetic resonance (NMR) spectroscopy. When extracted by 0.5 M NaOH-25 mM EDTA, extraction recovery of total P(TP) and organic P(P o ) exceeded 90 %. Concentrations of P o in algae and aquatic macrophytes were 5552 mg kg −1 and 1005 mg kg −1 and accounted for 56.0 and 47.2 % of TP, respectively. When P o , including condensed P, was characterized by solution 31 P-NMR P o in algae included orthophosphate monoesters (79.8 %), pyrophosphate (18.2 %), and orthophosphate diester (2.0 %), and P o in aquatic macrophytes included orthophosphate monoesters (90.3 %), pyrophosphate (4.2 %), and orthophosphate diester (5.5 %). Additionally, orthophosphate monoesters in algal debris mainly included β-glycerophosphate (44.1 %), α-glycerophosphate (13.5 %), and glucose 6-phosphate (13.5 %). Orthophosphate monoesters in aquatic macrophytes mainly included β-glycerophosphate (27.9 %), α-glycerophosphate (24.6 %), and adenosine 5′ monophosphate (8.2 %). Results derived from this study will be useful in better understanding nutrient cycling, relevant eutrophication processes, and pollution control for freshwater lakes.

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Section: Naoh-edta Extractable P From Aquatic Macrophytes and Algaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of phosphorus forms in lake macrophytes and algae by solution 31P nuclear magnetic resonance spectroscopy

Feng

Zhu

et al. 2015

Environ Sci Pollut Res

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“…The most abundant organic P forms in terrestrial soils and freshwater environments are usually the MP, which includes sugar phosphates, phosphoproteins and inositol phosphate (Zhu et al 2013). DP is found at relatively low concentrations but appears to be a more significant source of inorganic P in aquatic ecosystems due to their short turnover time (Turner and Newman 2005;Baldwin 2013). Given the potential importance of these labile DOP pools and their different characteristics (Heath 2005;Zhu et al 2013), there is a need to understand their relative distribution and dynamics in urban freshwater and downstream ecosystems.…”

Section: Introductionmentioning

confidence: 99%

The fingerprints of urban nutrients: dynamics of phosphorus speciation in water flowing through developed landscapes

Song

Xenopoulos

Maršálek³

et al. 2015

Biogeochemistry

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As urban ecosystems are known to be phosphorus (P)-rich environments, the sources of this nutrient and its biogeochemistry within human-dominated landscapes remain in need of study. Specifically, very little is known about how different P species vary within and among urban aquatic environments. In this study, we examined the phosphorus dynamics in urban stormwater ponds that are embedded in residential landscapes. Water samples were collected from stormwater ponds located in southern Ontario, Canada during the summer of 2012. We measured several P types: total P; TP, particulate P; PP, and dissolved inorganic P; DIP as well as two classes of DOP (phosphomonoesters (MP) and phosphodiesters (DP)) in the surface water samples. In most ponds, PP in outflowing water were found at concentrations higher (up to 12 times) than those measured in incoming stormwater. With respect to DOP, DP increased and became more abundant in outflowing compared to inflowing waters while MP concentrations decreased within ponds. The magnitude of these spatial changes from pond inlets to outlets was strongly linked to recent periods of rainfall and the hydrological condition of pond inflows. Elevated MP was found adjacent to inlets especially during periods of more frequent rainfall, which indicates that MP is derived from terrestrial sources and delivered by stormwater. In contrast, DP production was more related to internal biological activity in ponds as its concentrations increased during relatively dry conditions with low stormwater flow. Our results demonstrate that stormwater ponds have significant influence on the quantity and types of P moving through these highly human-modified environments.

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“…In the present study, dissolved organic nitrogen (DON) was approximated as the difference between TDN and DIN. Dissolved organic phosphorus (DOP) was approximated as the difference between TDP and DIP (Baldwin, 2013).…”

Section: Abiotic Variablesmentioning

confidence: 99%

Spatial dissimilarities in plankton structure and function during flood pulses in a semi-arid floodplain wetland system

Kobayashi¹,

Ralph

Ryder³

et al. 2014

Hydrobiologia

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Floodplain wetlands in semi-arid regions have intricate channel-floodplain networks with highly variable and unpredictable wet and dry phases related to changes in hydrology and geomorphology. We tested the hypothesis that the presence of different hydro-geomorphic habitats in those systems drives structural and functional differences in aquatic communities. To test this hypothesis, we examined the densities and species composition (structural variables), and primary productivity and respiration (functional variables) of plankton communities, and water chemistry in three spatially explicit channel, floodout and lagoon habitat types inundated by environmental water releases in the Macquarie Marshes, semi-arid Australia. Significant differences were recorded among the community-level structural and functional variables among the three habitats. Greater densities of phytoplankton, zooplankton and planktonic bacteria were observed in a hydrologically isolated floodplain lagoon. The lagoon habitat also had greater primary productivity of phytoplankton and planktonic respiration compared with the channel and floodout. Our results suggest that water release to meet environmental flow requirements can be an important driver of planktonic diversity and functional responses in semi-arid wetland systems by inundating diverse, hydro-geomorphically distinct habitats.

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Organic phosphorus in the aquatic environment

Cited by 96 publications

References 138 publications

Characterization of phosphorus forms in lake macrophytes and algae by solution 31P nuclear magnetic resonance spectroscopy

Characterization of phosphorus forms in lake macrophytes and algae by solution 31P nuclear magnetic resonance spectroscopy

The fingerprints of urban nutrients: dynamics of phosphorus speciation in water flowing through developed landscapes

Spatial dissimilarities in plankton structure and function during flood pulses in a semi-arid floodplain wetland system

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