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Items from 1 to 20 out of 14,700 results

article

Effects of slope aspect on soil nitrogen and microbial properties in the Chinese Loess region

Yi-Mei Huang, Dong Liu, Shao-Shan An, Y.M. Huang, more

Catena > 2015 > 125 > Complete > 135-145

Revegetation is a very important way to improve soil quality and fertility in the hilly–gully region of the Loess Plateau, where serious soil nutrient loss and degradation due to water loss and soil erosion were experienced. The creation of an artificial forest is an important measure to restore the local vegetation. Caragana korshinskii (CK) is an ideal tree species in the recovery of vegetation...

article

Net anthropogenic nitrogen inputs and nitrogen fluxes from Indian watersheds: An initial assessment

D.P. Swaney, B. Hong, A. Paneer Selvam, R.W. Howarth, more

Journal of Marine Systems > 2015 > 141 > Complete > 45-58

In this paper, we apply an established methodology for estimating Net Anthropogenic Nitrogen Inputs (NANI) to India and its major watersheds. Our primary goal here is to provide initial estimates of major nitrogen inputs of NANI for India, at the country level and for major Indian watersheds, including data sources and parameter estimates, making some assumptions as needed in areas of limited data...

article

Increasing Lipid Accumulation of Chlorella vulgaris Using Spirulina platensis in Flat Plate Reactor for Synthesizing Biodiesel

Dianursanti, Albert Santoso, Dianursanti, A. Santoso

Energy Procedia > 2015 > 65 > Complete > 58-66

Lipid accumulation in potential C. vulgaris could be induced by controlling nitrogen concentration in optimum level. In this study, C. vulgaris and S. platensis were cultured in BG-11 medium in flat plate photobioreactor to assess biomass and lipid productivity. Colony composition 3: 2 (40%wt S. platensis) gives highest lipid yield (6.72%) in continuous illumination 3 000lx compare to control sample...

article

The effects of dams in rivers on N and P export to the coastal waters in Indonesia in the future

Djoko Suwarno, Ansje Löhr, Carolien Kroeze, Budi Widianarko, more

Sustainability of Water Quality and Ecology > 2014 > 3-4 > Complete > 55-66

We used Global NEWS to analyze the effects of dams in large rivers on nitrogen (N) and phosphorus (P) inputs to the coastal waters of Indonesia for the period 1970–2050. We model N and P export by rivers, taking into account nutrient retention on land, during river transport and in dammed reservoirs. Our results indicate that N and P export by rivers to coastal seas may increase over time. In the...

article

Impact of forecasted changes in Polish economy (2015 and 2020) on nutrient emission into the river basins

Marianna Pastuszak, Tomasz Kowalkowski, Jerzy Kopiński, Jarosław Stalenga, more

Science of the Total Environment > 2014 > 493 > Complete > 32-43

Poland, with its large drainage area, with 50% contribution of agricultural land and 45% contribution of population to overall agricultural land area and population number in the Baltic catchment, is the largest exporter of riverine nitrogen (N) and phosphorus (P) to the sea. The economic transition has resulted in substantial, statistically significant decline in N, P export from Polish territory...

article

Nitrogen and phosphorus discharge of animal origin in the Baixo Vouga: A spatial data analysis

C. Clemêncio, M. Viegas, H. Nadais, C. Clemencio, more

Science of the Total Environment > 2014 > 490 > Complete > 1091-1098

The livestock production is a strategic and crucial activity for it fixes populations in rural areas, contributing to its conservation, and most importantly because it ensures food production. By producing meat, milk or eggs, this sector contributes to national food self-sufficiency. However, intensive livestock farming activities carry a strong pollution load on the environment, particularly through...

article

Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)

Valentí Rodellas, Jordi Garcia-Orellana, Antonio Tovar-Sánchez, Gotzon Basterretxea, more

Marine Chemistry > 2014 > 160 > Complete > 56-66

Submarine Groundwater Discharge (SGD) from a detrital coastal aquifer into the adjacent marine environment was investigated in a Mediterranean bay (Palma Beach, Balearic Islands). In this region, agriculture and tourism are potential sources of groundwater contamination. A survey in the Palma Beach revealed N, Fe and chlorophyll a enhancement associated to areas of preferential groundwater discharge...

article

Topography as a key factor driving atmospheric nitrogen exchanges in arctic terrestrial ecosystems

Katherine J. Stewart, Paul Grogan, Darwyn S. Coxson, Steven D. Siciliano, more

Soil Biology and Biochemistry > 2014 > 70 > Complete > 96-112

Identifying the key drivers of nitrogen cycling processes that influence gaseous N exchanges in arctic ecosystems is essential for predicting the response of northern systems to changes in climatic conditions. In this review we examine pathways of N input (atmospheric N deposition and biological N ₂ -fixation), cycling (N mineralization, immobilization and nitrification) and output (denitrification...

article

The microbial communities and potential greenhouse gas production in boreal acid sulphate, non-acid sulphate, and reedy sulphidic soils

Miloslav Šimek, Seija Virtanen, Asko Simojoki, Alica Chroňáková, more

Science of the Total Environment > 2014 > 466-467 > Complete > 663-672

Acid sulphate (AS) soils along the Baltic coasts contain significant amounts of organic carbon and nitrogen in their subsoils. The abundance, composition, and activity of microbial communities throughout the AS soil profile were analysed. The data from a drained AS soil were compared with those from a drained non-AS soil and a pristine wetland soil from the same region. Moreover, the potential production...

article

Typomorphic characteristics of the Ural diamonds (from FTIR spectroscopy data)

E.N. Fedorova, A.M. Logvinova, L.I. Luk’yanova, N.V. Sobolev, more

Russian Geology and Geophysics > 2013 > 54 > 12 > 1458-1470

Natural diamonds from the Ural alluvial deposits have been studied by FTIR spectroscopy. It is shown that these diamonds are similar in some typomorphic features, such as nitrogen content and aggregation state, to the diamonds of the Coromandel (Brazil) and Verkhnee Molodo (Lena region, Yakutia) placers and to the diamonds from kimberlites of the Arkhangel’sk Region but differ significantly in lower...

article

Impact of mussel farming on sedimentary geochemical properties of a Northern Adriatic area influenced by freshwater inflows

F. Rampazzo, D. Berto, M. Giani, D. Brigolin, more

Estuarine, Coastal and Shelf Science > 2013 > 129 > Complete > 49-58

The interactions of mussel aquaculture with physico-chemical properties and the biogenic elemental composition of the surface sediment were studied at a long-line farm, located in a 12 km ² area, which included the farm (4 km ² ) characterized by relevant freshwater inputs along the North-Western Adriatic coastline. Negative redox potentials were detected at two stations directly affected...

article

Wplyw formy azotu nawozowego, dokarmiania dolistnego i miejsca uprawy na plonowanie i jakosc salaty

I Kowalska, Sady W., Szura A.

Acta Agrophysica > 2006 > 7 > 3[134] > 619-631

article

Assessment of nutrient differences in detached soil particles between cropland and revegetated abandoned land

María Concepción Ramos, Iván Lizaga, Leticia Gaspar, Arturo Catalá, more

Land Degradation & Development > 35 > 16 > 5029 - 5042

Cropland (CRL) abandonment is a worldwide phenomenon of land use change with significant impacts on agro‐ecosystems. This research attempts to deepen the analysis of the positive and negative effects arising by focusing on the changes in soil properties and the amount and composition of soil particles detached after several periods of rainfall and the resulting exported sediment that occurs in abandoned...

article

Global patterns and controlling factors of tree bark C : N : P stoichiometry in forest ecosystems consistent with biogeochemical niche hypothesis

Haiyang Gong, Jordi Sardans, Heng Huang, Zhengbing Yan, more

New Phytologist > 244 > 4 > 1303 - 1314

Bark serves crucial roles in safeguarding trees physically and chemically, while also contributing to nutrient cycling and carbon sequestration. Despite its importance, the broader biogeographical patterns and the potential factors influencing bark C : N : P stoichiometry in forest ecosystems remain largely unknown. In this study, we compiled a comprehensive dataset comprising carbon (C), nitrogen...

article

High‐nitrogen‐induced γ‐aminobutyric acid triggers host immunity and pathogen oxidative stress tolerance in tomato and Ralstonia solanacearum interaction

Wei Liu, Yushu Wang, Tuo Ji, Chengqiang Wang, more

New Phytologist > 244 > 4 > 1537 - 1551

Soil nitrogen (N) significantly influences the interaction between plants and pathogens, yet its impact on host defenses and pathogen strategies via alterations in plant metabolism remains unclear. Through metabolic and genetic studies, this research demonstrates that high‐N‐input exacerbates tomato bacterial wilt by altering γ‐aminobutyric acid (GABA) metabolism of host plants. Under high‐N...

article

Effects of N levels on land productivity and N₂O emissions in maize–soybean relay intercropping

Zhidan Fu, Ping Chen, Yuze Li, Kai Luo, more

Journal of the Science of Food and Agriculture > 104 > 14 > 8823 - 8836

BACKGROUND Relay intercropping of maize and soybean can improve land productivity. However, the mechanism behind N₂O emissions in this practice remains unclear. A two‐factor randomized block field trial was conducted to reveal the mechanism of N₂O emissions in a full additive maize–soybean relay intercropping. Factor A was three cropping systems – that is, monoculture maize (Zea mays L.), monoculture...

article

Ammonia and urea metabolism in acute liver failure: A multicentre cohort study

Filipe S. Cardoso, David Toapanta, Natalia Jimenez, Pedro Fidalgo, more

Liver International > 44 > 10 > 2651 - 2659

Background & Aims Ammonia is metabolized into urea in the liver. In acute liver failure (ALF), ammonia has been associated with survival. However, urea variation has been poorly studied. Methods Observational cohort including ALF patients from Curry Cabral Hospital (Lisbon, Portugal) and Clinic Hospital (Barcelona, Spain) between 10/2010 and 01/2023. The United States ALF Study Group cohort...

article

Preliminary isotopic assessment of weaning in bonobos shows evidence for extended nursing, sibling competition and invested first‐time mothers

Vicky M. Oelze, Kayla Ott, Sean M. Lee, Isabella O'Neal, more

American Journal of Primatology > 86 > 11 > n/a - n/a

Although considered a hallmark in early ontogeny, weaning from breastmilk is difficult to monitor in wild primates and weaning ages remain unknown for wild bonobos (Pan Paniscus). Here, we calculated inter‐birth intervals from demographic data and measured the isotopic offsets (Δ¹⁵N and Δ¹³C) between mother (n = 17) and offspring (n = 28) fecal sample pairs (n = 131, total n = 246) in the LuiKotale...

article

Nitrogen‐fixing plants increase soil nitrogen and neighbouring‐plant biomass, but decrease community diversity: A meta‐analysis reveals the mediating role of soil texture

Sarah K. Ortiz, Amelia A. Wolf

Journal of Ecology > 112 > 10 > 2374 - 2385

Several recent regional studies have cast doubt on the widespread assumption that nitrogen‐fixing plants (N‐fixers) act as facilitators of neighbouring plant communities. We conducted a meta‐analysis to synthesize the effects of N‐fixers on plant communities and to understand how ecological context moderates these effects. We analysed studies that assessed paired effects of N‐fixers and non‐fixers...

article

Plant functional types and tissue stoichiometry explain nutrient transfer in common arbuscular mycorrhizal networks of temperate grasslands

Hilary Rose Dawson, Katherine L. Shek, Toby M. Maxwell, Paul B. Reed, more

Functional Ecology > 38 > 10 > 2184 - 2195

Plants and mycorrhizal fungi form mutualistic relationships that affect how resources flow between organisms and within ecosystems. Common mycorrhizal networks (CMNs) could facilitate preferential transfer of carbon and limiting nutrients, but this remains difficult to predict. Do CMNs favour fungal resource acquisition at the expense of plant resource demands (a fungi‐centric view), or are they...

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INFONA - science communication portal

Search results

Effects of slope aspect on soil nitrogen and microbial properties in the Chinese Loess region

Net anthropogenic nitrogen inputs and nitrogen fluxes from Indian watersheds: An initial assessment

Increasing Lipid Accumulation of Chlorella vulgaris Using Spirulina platensis in Flat Plate Reactor for Synthesizing Biodiesel

The effects of dams in rivers on N and P export to the coastal waters in Indonesia in the future

Impact of forecasted changes in Polish economy (2015 and 2020) on nutrient emission into the river basins

Nitrogen and phosphorus discharge of animal origin in the Baixo Vouga: A spatial data analysis

Submarine groundwater discharge as a source of nutrients and trace metals in a Mediterranean bay (Palma Beach, Balearic Islands)

Topography as a key factor driving atmospheric nitrogen exchanges in arctic terrestrial ecosystems

The microbial communities and potential greenhouse gas production in boreal acid sulphate, non-acid sulphate, and reedy sulphidic soils

Typomorphic characteristics of the Ural diamonds (from FTIR spectroscopy data)

Impact of mussel farming on sedimentary geochemical properties of a Northern Adriatic area influenced by freshwater inflows

Wplyw formy azotu nawozowego, dokarmiania dolistnego i miejsca uprawy na plonowanie i jakosc salaty

Assessment of nutrient differences in detached soil particles between cropland and revegetated abandoned land

Global patterns and controlling factors of tree bark C : N : P stoichiometry in forest ecosystems consistent with biogeochemical niche hypothesis

High‐nitrogen‐induced γ‐aminobutyric acid triggers host immunity and pathogen oxidative stress tolerance in tomato and Ralstonia solanacearum interaction

Effects of N levels on land productivity and N₂O emissions in maize–soybean relay intercropping

Ammonia and urea metabolism in acute liver failure: A multicentre cohort study

Preliminary isotopic assessment of weaning in bonobos shows evidence for extended nursing, sibling competition and invested first‐time mothers

Nitrogen‐fixing plants increase soil nitrogen and neighbouring‐plant biomass, but decrease community diversity: A meta‐analysis reveals the mediating role of soil texture

Plant functional types and tissue stoichiometry explain nutrient transfer in common arbuscular mycorrhizal networks of temperate grasslands

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