scholarly journals Seasonal and Spatial Variations of Atmospheric Ammonia in the Urban and Suburban Environments of Seoul, Korea

Atmosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1607
Author(s):  
Rahul Singh ◽  
Kyunghoon Kim ◽  
Gyutae Park ◽  
Seokwon Kang ◽  
Taehyun Park ◽  
...  
Keyword(s):  
Ammonia Concentration ◽  
Testing Methods ◽  
Atmospheric Ammonia ◽  
Suburban Areas ◽  
Seasonal And Spatial Variations ◽  
Annular Denuder ◽  
Standardized Measurement ◽  
One Year ◽  
Agricultural Areas ◽  
Ammonia Sampling

Atmospheric ammonia is a significant pollutant throughout the year, necessitating standardized measurement and identification of emission factors. We performed a quantized evaluation of ammonia concentrations at various locations in and around Seoul, South Korea. The established testing methods of the Radiello Passive Sampler were used for ammonia sampling, and the method was validated using annular denuder sampling. Urban and suburban areas were studied to gain a deeper understanding of the factors responsible for ammonia pollution. This study aimed to establish the fluctuations in concentration over one year, by analyzing the seasonal and regional variation in ammonia concentration. Livestock and agricultural areas recorded the highest concentration of ammonia among all sites, with the highest concentration recorded in autumn. However, at most of the other studied sites, the highest and lowest ammonia concentrations were recorded during summer and winter, respectively. This study attempted to establish a correlation between ammonia concentration and temperature, as well as ammonia concentration and altitude.

scholarly journals Atmospheric Ammonia Concentration Effects on Broiler Growth and Performance

2004 ◽  
Vol 13 (1) ◽  
pp. 5-9 ◽  
Author(s):  
A. Beker ◽  
S.L. Vanhooser ◽  
J.H. Swartzlander ◽  
R.G. Teeter
Keyword(s):  
Ammonia Concentration ◽  
Concentration Effects ◽  
Atmospheric Ammonia ◽  
And Performance

Detecting changes in epiphytic lichen communities at sites affected by atmospheric ammonia from agricultural sources

2006 ◽  
Vol 38 (2) ◽  
pp. 161-176 ◽  
Author(s):  
Patricia A. WOLSELEY ◽  
Peter W. JAMES ◽  
Mark R. THEOBALD ◽  
Mark A. SUTTON
Keyword(s):  
At Risk ◽  
The Netherlands ◽  
Negative Correlation ◽  
Ammonia Concentration ◽  
Quercus Petraea ◽  
Epiphytic Lichens ◽  
Indicator Values ◽  
Epiphytic Lichen ◽  
Atmospheric Ammonia ◽  
Ecological Continuity

Lichens were recorded on Quercus petraea trunks and twigs near ammonia recording stations in ‘continental’ Norfolk, and ‘oceanic’ Devon in order to test indicator values developed for epiphytic lichens in areas of high atmospheric ammonia in the Netherlands. Lichens on trunks in Norfolk showed a similar correlation of nitrophyte indices with ammonia concentration and bark pH as those in Holland, whereas in Devon there was no correlation with nitrophyte indices on trunks and a negative correlation with acidophyte indices. Results on twigs in both sites suggest that lichens on twigs respond more rapidly to recent changes in ammonia concentrations while trunks may maintain relict lichen communities due to either a legacy of previous acidification or ecological continuity. The results suggest that loss of acidophytes is taking place prior to the establishment of nitrophytes indicating the importance of establishing levels of ammonia at which sensitive communities are at risk.

scholarly journals Consequences of pond management for chironomid assemblages and diversity in English farmland ponds

2018 ◽  
Author(s):  
Leslie P. Ruse ◽  
Helen M. Greaves ◽  
Carl D. Sayer ◽  
Jan C. Axmacher
Keyword(s):  
Open Water ◽  
Low Oxygen ◽  
Pupal Exuviae ◽  
Sediment Removal ◽  
Water State ◽  
Chironomid Species ◽  
Chironomid Assemblages ◽  
Oxygen Conditions ◽  
One Year ◽  
Agricultural Areas

Ponds represent a large potential resource for biodiversity in agricultural areas of lowland Europe though many are lost through natural succession towards damp woodland depressions (terrestrialisation). Managing ponds back towards their former open-water state may result in dramatic increases of biodiversity, even on heavily farmed land. Here, evidence is presented of the effects of terrestrialised farmland pond restoration on chironomid assemblages. Chironomid pupal exuviae were collected from three terrestrialised ponds on intensively-farmed land in North Norfolk, Eastern England. Two of the ponds had trees, scrub and sediment removed, while the third pond remained undisturbed as a control. Pupal exuviae collection resumed after the restoration period. In addition, nine unmanaged farm ponds and two formerly restored ponds were sampled. Nearby, another five restored ponds were also sampled for chironomid pupal exuviae. Water data revealed alkalinity, conductivity and phosphorus decreased while pH and dissolved oxygen increased after pond restoration. Chironomid species diversity, similarity and species compositional change were compared pre- and post-restoration. Assessments were made of chironomid species associated with colonisation of restored ponds as well as ponds without such management. After scrub and sediment removal the earliest colonisation of the ponds was by mud-eating species with rapid colonisation traits such as parthenogenesis, multiple generations in one year and tolerance of low oxygen conditions. Subsequent plant growth due to the opening up of the canopy led to consequent improved oxygenation and habitat structure. Other chironomid species dependent on these conditions were then able to compete with the early colonisers. Restoration also made a significant improvement in the number of chironomid species, as assessed by rarefaction curves.

scholarly journals Environmental Monitoring Supported by Aerial Photography – a Case Study of the Burnt Down Bugac Juniper Forest, Hungary

2016 ◽  
Vol 9 (1-2) ◽  
pp. 31-38 ◽  
Author(s):  
József Szatmári ◽  
Zalán Tobak ◽  
Zsolt Novák
Keyword(s):  
Remote Sensing ◽  
Invasive Species ◽  
Aerial Photography ◽  
Aerial Photographs ◽  
Natural Ecosystems ◽  
Burnt Area ◽  
Automatic Methods ◽  
Gis Methods ◽  
One Year ◽  
Agricultural Areas

Abstract Wildfire poses a serious risk in several regions of the world threatening urban, agricultural areas and natural ecosystems as well. Nature conservation has important role to be prepared for the management of postfire environmental degradation and restoration for protected areas preserving valuable ecosystems. The improving temporal and spatial resolution of remote sensing and GIS methods significantly contributes to map the changes for accelerating management steps of restoration. In this study a severe wildfire and its impacts were assessed in case of a protected area of the Kiskunság National Park in Hungary, which was partly burnt down in 2012. The aim of this research was to efficiently and accurately assess the damages and to plan and execute the restoration works using remote sensing tools. Aerial data collection was performed one month, and one year after the fire. In 2014 the regenerated vegetation was surveyed and mapped in the field. Using the aerial photographs and the field data, the degree and extent of the fire damages, the types and the state of the vegetation and the presence and proportion of the invasive species were determined. Semi-automatic methods were used for the classification of completely, partially damaged and undamaged areas. Based on the results, the reforestation of the burnt area is suggested to prevent the overspreading of white poplar against common junipers and to clean the area from the most frequent invasive species. To monitor the regeneration of the vegetation and the spreading of the invasive species, further aerial photography and field campaigns are planned.

Cultivated Lands within Urban Area

2013 ◽  
pp. 143-157
Author(s):  
G. Mauro
Keyword(s):  
Urban Area ◽  
Urban Areas ◽  
Suburban Areas ◽  
North East ◽  
The North ◽  
Relevant Role ◽  
Agricultural Areas ◽  
The City ◽  
The Town

Several studies put in evidence the relevant role of cultivated lands in the urban areas. Using GIS methodologies in order to map agricultural areas near or within the town, it is possible to analyze their relationship with the urban area. In this study, the author used several different cartography sources, like digital cartography and orthophotos, in order to locate the urban domestic gardens and the terraced landscapes accurately. The study area is a medium city of a North-East Region of Italy, Trieste. Built on a hill morphology, it had a great and fast growth in the 19th and 20th centuries. These changes deeply transformed its landform, mainly reducing its surrounding cultivated lands. At present, the residual terraced landscapes are mainly placed in the north side of the city and they represent a kind of “cultural heritage.” On the contrary, the most important garden areas are located in the terrain embankments of the south suburban areas.

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