scholarly journals Assessment of urban tree condition using VTA at Urban Green Space of Mataram University Rectorate

2021 ◽  
Vol 918 (1) ◽  
pp. 012033
Author(s):  
A T Lestari ◽  
E Wahyuningsih ◽  
M Syaputra ◽  
P K Suparyana

Abstract Urban green spaces, including those in the University of Mataram, is all urban land covered by vegetation of any kind, which has aesthetic and recreation values and are important components in improving the ecosystem function. Many trees at the University of Mataram Rectorate Area have aesthetical and ecological values. These trees have not been subjected to health assessment, while various stressors may have impacted the trees in the past. There is no available previous assessment information regarding the tree’s health condition. The purpose of this study is to conduct a Visual Tree Assessment (VTA) to evaluate the 62 trees’ health condition at the Mataram University Rectorate Area. The target trees were ≥20 cm diameter at breast height (dbh) and poles (10-19 cm dbh). The assessment was carried out using the VTA method to the condition of the common defects of the tree. The results show that based on the condition of the common defects of the tree, it was found that 22% of the trees had dead trees, top, and branches; 21% had parasite or mistletoe; 19% had stem or branch decay; 13% had weak branch union; 10% had poor tree architecture; 6% had cracks; 4% had termite attack; 3% had cankers, and 2% trees had root problems. Based on the hazard category of targeted trees, 79,03% of the trees are in Low hazard conditions (sound), 19,35% were in Moderately hazardous conditions, and only 1,61% were in Highly hazardous conditions. This assessment should be continued with an in-depth investigation. Monitoring and evaluation of tree health assessment should be done at least once a year. It is very important to gather up-to-date information on health conditions in the trees. The evaluation results integrated into GIS will be used as a tree health database that can be updated continuously. This data is expected to reduce the risk of damage that can be caused by the trees.

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257074
Author(s):  
Krzysztof Deoniziak ◽  
Tomasz S. Osiejuk

Changes in the acoustic signalling of animals occupying urban ecosystems is often associated with the masking effects of noise pollution, but the way in which they respond to noise pollution is not straightforward. An increasing number of studies indicate that responses can be case specific, and some species have been found to respond differently to high levels of natural versus anthropogenic noise, as well as different levels of the latter. While the perception of noise between species may vary with its source, amplitude and temporal features, some species may possess broader environmental tolerance to noise pollution, as they use higher frequency vocalizations that are less masked by low-frequency urban noise. In this study, we explored the song variation of two closely related leaf warblers, the Common Chiffchaff Phylloscopus collybita and the Willow Warbler Phylloscopus trochilus, inhabiting urban green spaces and nonurban forests. The main goal of our study was to evaluate the impact of moderate levels of noise pollution on the songs of species which use higher frequency vocalizations and large frequency bandwidth. Previous studies found that the Common Chiffchaff modified their song in response to intense noise pollution, while no such data is available for the Willow Warbler. However, the majority of urban green spaces, which serve as wildlife hot spots in urban environments are usually polluted with moderate noise levels, which may not mask the acoustic signals of species that communicate with higher frequency. We analysed the spectral and temporal song parameters of both warblers and described the ambient noise present in males’ territories. Additionally, we looked at the social and seasonal aspects of bird song, since there is more than just noise in urban ecosystems which may affect acoustic communication. We found no evidence for noise-related bird song divergence in either species, however, we showed that social factors, time of day and season influence certain Common Chiffchaff and Willow Warbler song characteristics. Lack of noise-related bird song divergence may be due to the relatively low variation in its amplitude or other noise features present within the song frequency range of the studied species. Similar results have previously been shown for a few songbird species inhabiting urban ecosystems. Although in many cases such results remain in the shadow of the positive ones, they all contribute to a better understanding of animal communication in urban ecosystems.


2020 ◽  
Vol 8 (4) ◽  
pp. 93-98
Author(s):  
Natalia Fomina ◽  
Grigory Chernyavsky ◽  
Julia Melnikova ◽  
Olga Aleshina

The purpose of the study is to assess the health status of the 1st – 4th year students in the Department of Drama using the G. Apanasenko method. The somatic health condition determines the incidence of diseases, the performance of students, and their future vocational opportunities. Monitoring the condition of students is an important component of the physical education system implemented at the universities of theater studies in the framework of "Physical education" and "Stage movement" disciplines. Methods and organization of research. The paper presents the results of the survey (September 2020) covering 43 students aged 17-21 years (25 boys and 18 girls) using the G. Apanasenko express method of assessing health condition. The authors measured main vital signs (body length and weight, heart rate, blood pressure, VC, EPOC, post-exercise recovery period) and obtained overall assessment of health condition of each student and its individual indices (mass, vital, strength, Robinson). Research results and their discussion. The research revealed that 53.5% of students have average level of health indicator. However, only 51.2% of indicators fall within the zone of healthy values, while the remaining 48.8% stay below the safe limit. The indicators of 61.1% of girls are in the safe zone, while only 44% of boys fall within this segment. There is a decrease in health indicators of students by the 4th year of study, which is the result of a decrease in their sport activities due to the lack of "Physical education" and "Stage movement" special disciplines. Analysis of the calculated indices highlighted the challenging components of the overall health assessment. Power index provided the lowest indicators. Girls have higher indicator values than boys, as well as the life index indicators. Conclusion. The revealed facts contribute to determination of the direction of further research aimed at the refinement of educational programs on physical education and stage movement.


Author(s):  
Erda Wati Bakar

The Common European Framework of Reference for Language (CEFR) has become the standard used to describe and evaluate students’ command of a second or foreign language. It is an internationally acknowledged standard language proficiency framework which many countries have adopted such as China, Thailand, Japan and Taiwan. Malaysia Ministry of Education is aware and realise the need for the current English language curriculum to be validated as to reach the international standard as prescribed by the CEFR. The implementation of CEFR has begun at primary and secondary level since 2017 and now higher education institutions are urged to align their English Language Curriculum to CEFR as part of preparation in receiving students who have been taught using CEFR-aligned curriculum at schools by year 2022. This critical reflection article elucidates the meticulous processes that we have embarked on in re-aligning our English Language Curriculum to the standard and requirements of CEFR. The paper concludes with a remark that the alignment of the English curriculum at the university needs full support from the management in ensuring that all the stakeholders are fully prepared, informed and familiar with the framework.


2021 ◽  
Vol 13 (14) ◽  
pp. 7863
Author(s):  
Antonios Kolimenakis ◽  
Alexandra D. Solomou ◽  
Nikolaos Proutsos ◽  
Evangelia V. Avramidou ◽  
Evangelia Korakaki ◽  
...  

Urban green areas present a lucid example for the harmonious co-existence of the artificial and natural environments best illustrated by their interdependence and interconnection in urban spaces. Urban green areas are essential for the health and wellbeing of citizens. The present study aimed to investigate those multiple benefits for citizens that arise through the existence of urban green areas, as well as important policy dimensions that should be considered when designing the expansion of urban green spaces in urban development. The study was based on a literature review to examine for available evidence on the benefit levels derived by the existence of urban green areas. An extended literature review was followed by a structured review, based on specific inclusion and exclusion criteria, which partly followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The search was conducted in two databases, and a total of 1674 articles and abstracts were identified through the database searches. After removing 114 duplicates, 1560 records were initially screened based on title and abstract. Following inclusion and exclusion criteria, 14 articles were incorporated in the structured review and a total of 47 in the extended review. The extended literature review identified 33 additional articles examining aspects of benefits that did not fall under the pre-established inclusion and exclusion criteria used in the structured review, such as health benefits and other social parameters associated with urban green spaces. The selected studies were allocated in five principal groups according to study types: three of the them consisted of studies employing “willingness to pay” (WTP) methods, five were based on property values, two studies assigned monetary values, while another two assigned CO2 values, and, finally, two studies were based on qualitative criteria. The results indicated benefits to citizens and increased welfare levels gained by the existence of urban green areas. The conducted review revealed a number of findings and recommendations that could direct future research and urban policy. Those hints could assist local authorities as well as stakeholders in order to measure and assess the benefits of green spaces and urban parks and promote measures and programs to assist their further deployment.


2021 ◽  
Vol 70 ◽  
pp. 102603
Author(s):  
Lucía Rodriguez-Loureiro ◽  
Lidia Casas ◽  
Mariska Bauwelinck ◽  
Wouter Lefebvre ◽  
Charlotte Vanpoucke ◽  
...  

2021 ◽  
Vol 10 (4) ◽  
pp. 251
Author(s):  
Christina Ludwig ◽  
Robert Hecht ◽  
Sven Lautenbach ◽  
Martin Schorcht ◽  
Alexander Zipf

Public urban green spaces are important for the urban quality of life. Still, comprehensive open data sets on urban green spaces are not available for most cities. As open and globally available data sets, the potential of Sentinel-2 satellite imagery and OpenStreetMap (OSM) data for urban green space mapping is high but limited due to their respective uncertainties. Sentinel-2 imagery cannot distinguish public from private green spaces and its spatial resolution of 10 m fails to capture fine-grained urban structures, while in OSM green spaces are not mapped consistently and with the same level of completeness everywhere. To address these limitations, we propose to fuse these data sets under explicit consideration of their uncertainties. The Sentinel-2 derived Normalized Difference Vegetation Index was fused with OSM data using the Dempster–Shafer theory to enhance the detection of small vegetated areas. The distinction between public and private green spaces was achieved using a Bayesian hierarchical model and OSM data. The analysis was performed based on land use parcels derived from OSM data and tested for the city of Dresden, Germany. The overall accuracy of the final map of public urban green spaces was 95% and was mainly influenced by the uncertainty of the public accessibility model.


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