Nature and Magnitude of Atmospheric Fluxes of Total Inorganic Nitrogen and Other Inorganic Species to the Tampa Bay Watershed, FL, USA

Poor, Noreen; Pollman, Curtis D.; Tate, Paul; Begum, Mubeena; Evans, Melissa; Campbell, Scott W.

doi:10.1007/s11270-006-3055-6

Cited by 21 publications

(10 citation statements)

References 36 publications

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“…The calculation of V d is based on a simple parameterization of experimental meteorological measurements to determine atmospheric transport characteristics (Slinn, 1982;Zhang et al, 2001). The magnitudes of V d estimated were 1.2 and 0.6 cm/s for NO − 3 and NH + 4 , respectively and 2 cm/s for PO 3− 4 , 1.2 cm/s for TN and ON and 2 cm/s for TP and OP, which are consistent with results reported in the literature (Duce et al, 1991;Prospero et al, 1996;Spokes et al, 2000;Herut et al, 2002, Poor et al, 2006. These estimated V d could result in an uncertainty of a factor of 2-3 in the calculated fluxes (Duce et al, 1991).…”

Section: Dry Depositionsupporting

confidence: 91%

Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: field observations

et al. 2010

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Atmospheric nutrients have recently gained considerable attention as a significant additional source of new nitrogen (N) and phosphorus (P) loading to the ocean. The effect of atmospheric macro nutrients on marine productivity depends on the biological availability of both inorganic and organic N and P forms. During October 2006, the regional smoke haze episodes in Southeast Asia (SEA) that resulted from uncontrolled forest and peat fires in Sumatra and Borneo blanketed large parts of the region. In this work, we determined the chemical composition of nutrients in aerosols and rainwater during hazy and non-hazy days to assess their impacts on aquatic ecosystem in SEA for the first time. We compared atmospheric dry and wet deposition of N and P species in aerosol and rainwater in Singapore between hazy and non-hazy days. Air mass back trajectories showed that large-scale forest and peat fires in Sumatra and Kalimantan were a significant source of atmospheric nutrients to aquatic environments in Singapore and SEA region on hazy days. It was observed that the average concentrations of nutrients increased approximately by a factor of 3 to 8 on hazy days when compared with non-hazy days. The estimated mean dry and wet atmospheric fluxes (mg/m<sup>2</sup>/day) of total nitrogen (TN) were 12.72 ± 2.12 and 2.49 ± 1.29 during non-hazy days and 132.86 ± 38.39 and 29.43 ± 10.75 during hazy days; the uncertainty estimates are represented as 1 standard deviation (1σ) here and throughout the text. The estimated mean dry and wet deposition fluxes (mg/m<sup>2</sup>/day) of total phosphorous (TP) were 0.82 ± 0.23 and 0.13 ± 0.03 for non-hazy days and 7.89 ± 0.80 and 1.56 ± 0.65 for hazy days. The occurrences of higher concentrations of nutrients from atmospheric deposition during smoke haze episodes may have adverse consequences on receiving aquatic ecosystems with cascading impacts on water quality

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Section: Dry Depositionsupporting

confidence: 91%

Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: field observations

et al. 2010

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“…Although the deposition of K + from energy production and industrial plants has decreased in some European countries [ 255 ], that of K + from agricultural activities is very high in some developing countries, such as Brazil, reaching 55% of total K + deposition [ 256 ]. K + deposition linked to industrial and mainly agricultural activities can be higher than deposition from natural processes [ 257 , 258 ], such as sea spray [ 259 , 260 ]. The inputs of K + from atmospheric deposition have a determinant role in K + balances of forests, counteracting the loss of K + from leaching, which is favored by N deposition, due indirectly to soil pH decrease and soil degradation and directly to the competition with ammonium for the occupation of the exchangeable complex [ 261 , 262 ].…”

Section: Role Of K In Terrestrial Ecosystemsmentioning

confidence: 99%

Potassium Control of Plant Functions: Ecological and Agricultural Implications

Sardans

Peñuelas

2021

Plants

240

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Potassium, mostly as a cation (K+), together with calcium (Ca2+) are the most abundant inorganic chemicals in plant cellular media, but they are rarely discussed. K+ is not a component of molecular or macromolecular plant structures, thus it is more difficult to link it to concrete metabolic pathways than nitrogen or phosphorus. Over the last two decades, many studies have reported on the role of K+ in several physiological functions, including controlling cellular growth and wood formation, xylem–phloem water content and movement, nutrient and metabolite transport, and stress responses. In this paper, we present an overview of contemporary findings associating K+ with various plant functions, emphasizing plant-mediated responses to environmental abiotic and biotic shifts and stresses by controlling transmembrane potentials and water, nutrient, and metabolite transport. These essential roles of K+ account for its high concentrations in the most active plant organs, such as leaves, and are consistent with the increasing number of ecological and agricultural studies that report K+ as a key element in the function and structure of terrestrial ecosystems, crop production, and global food security. We synthesized these roles from an integrated perspective, considering the metabolic and physiological functions of individual plants and their complex roles in terrestrial ecosystem functions and food security within the current context of ongoing global change. Thus, we provide a bridge between studies of K+ at the plant and ecological levels to ultimately claim that K+ should be considered at least at a level similar to N and P in terrestrial ecological studies.

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“…deposition of K from energy production and industrial plants has decreased in some European countries (Ruoho-Airola & Salminen, 2003). Some studies have observed that K deposition, linked to industrial and, frequently, agricultural activities, can represent a higher proportion than that from natural processes (Ferm & Hultberg, 1999;Golobocanin et al 2009) such as sea spray (Poor et al, 2006;Prathibha et al, 2010).…”

Section: Anthropogenic Impacts On the K Cycle K Fertilizersmentioning

confidence: 99%

Potassium: a neglected nutrient in global change

Sardans

Peñuelas

2015

Global Ecology and Biogeography

439

283

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Aim Potassium (K) is the second most abundant nutrient in plant photosynthetic tissues after nitrogen (N). Thousands of physiological and metabolic studies in recent decades have established the fundamental role of K in plant function, especially in water-use efficiency and economy, and yet macroecological studies have mostly overlooked this nutrient. MethodsWe have reviewed available studies on the content, stoichiometry and roles of K in the soil-plant system and in terrestrial ecosystems. We have also reviewed the impacts of global change drivers on K content, stoichiometry and roles. ConclusionsThe current literature indicates that K, at a global level, is as limiting as N and phosphorus (P) for plant productivity in terrestrial ecosystems. Some degree of K limitation has been seen in up to 70% of all studied terrestrial ecosystems. However, in some areas atmospheric K deposition from human activities is greater than that from natural sources. We are far from understanding the K fluxes between the atmosphere and land, and the role of anthropogenic activities in these fluxes. The increasing aridity expected in wide areas of the world makes K more critical through its role in water-use efficiency. N deposition exerts a strong impact on the ecosystem K cycle, decreasing K availability and increasing K limitation. Plant invasive success is enhanced by higher soil K availability, especially in environments without strong abiotic stresses. The impacts of other drivers of global change, such as increasing atmospheric CO2 or changes in land use, remain to be elucidated. Current models of the responses of ecosystems and carbon storage to projected global climatic and atmospheric changes are now starting to consider N and P, but they should also consider K, mostly in arid and semi-arid ecosystems.

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Nature and Magnitude of Atmospheric Fluxes of Total Inorganic Nitrogen and Other Inorganic Species to the Tampa Bay Watershed, FL, USA

Cited by 21 publications

References 36 publications

Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: field observations

Impact of biomass burning on ocean water quality in Southeast Asia through atmospheric deposition: field observations

Potassium Control of Plant Functions: Ecological and Agricultural Implications

Potassium: a neglected nutrient in global change

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