scholarly journals Spatio-Temporal Distribution of Kalaw (Buceros Hydrocorax L.) at the Foothills of Mt. Pangasugan, Baybay City, Leyte, Philippines

2009 ◽  
Vol 9 (1) ◽  
pp. 13-25
Author(s):  
Teofanes Patindol ◽  
Keyword(s):  
Spatial Distribution ◽  
Secondary Forest ◽  
Biological Clock ◽  
Temporal Distribution ◽  
Preferred Habitat ◽  
Dipterocarp Forests ◽  
Large Trees ◽  
Spatio Temporal ◽  
Fig Trees

Mt. Pangasugan contains one of the few remaining intact lowland dipterocarp forests in Leyte which is home to many threatened avain species including the Kalaw. The study aimed to understand the spatial distribution and temporal activities of kalaw to provide information to support conservation progrom. The preferred habitat of kalaw was characterized by the dominance of species belonging to family Dipterocarpaceae and gap species of Araliaceae and Moraceae. Kalaw occurred in stands where there were large trees with natural cavities which could be used for nesting and fig trees and other fruit bearing gap species as source of food. Specific perches were big tall trees which comprise the canopy and emergent layers. The result of the study suggest strengthening protection of the remaingin secondary forest as habitat of kalaw and put a stop to current activities that may have affected the biological clock of Kalaw

scholarly journals The spatio-temporal distribution of lightning over Israel and the neighboring area and its relation to regional synoptic systems

2011 ◽  
Vol 11 (8) ◽  
pp. 2125-2135 ◽  
Author(s):  
S. Shalev ◽  
H. Saaroni ◽  
T. Izsak ◽  
Y. Yair ◽  
B. Ziv
Keyword(s):  
Spatial Distribution ◽  
Mediterranean Sea ◽  
Temporal Distribution ◽  
Lightning Activity ◽  
Eastern Coast ◽  
Synoptic Situation ◽  
Lightning Flash ◽  
The Mediterranean ◽  
Spatio Temporal ◽  
Neighboring Area

Abstract. The spatio-temporal distribution of lightning flashes over Israel and the neighboring area and its relation to the regional synoptic systems has been studied, based on data obtained from the Israel Lightning Location System (ILLS) operated by the Israel Electric Corporation (IEC). The system detects cloud-to-ground lightning discharges in a range of ~500 km around central Israel (32.5° N, 35° E). The study period was defined for annual activity from August through July, for 5 seasons in the period 2004–2010. The spatial distribution of lightning flash density indicates the highest concentration over the Mediterranean Sea, attributed to the contribution of moisture as well as sensible and latent heat fluxes from the sea surface. Other centers of high density appear along the coastal plain, orographic barriers, especially in northern Israel, and downwind from the metropolitan area of Tel Aviv, Israel. The intra-annual distribution shows an absence of lightning during the summer months (JJA) due to the persistent subsidence over the region. The vast majority of lightning activity occurs during 7 months, October to April. Although over 65 % of the rainfall in Israel is obtained during the winter months (DJF), only 35 % of lightning flashes occur in these months. October is the richest month, with 40 % of total annual flashes. This is attributed both to tropical intrusions, i.e., Red Sea Troughs (RST), which are characterized by intense static instability and convection, and to Cyprus Lows (CLs) arriving from the west. Based on daily study of the spatial distribution of lightning, three patterns have been defined; "land", "maritime" and "hybrid". CLs cause high flash density over the Mediterranean Sea, whereas some of the RST days are typified by flashes over land. The pattern defined "hybrid" is a combination of the other 2 patterns. On CL days, only the maritime pattern was noted, whereas in RST days all 3 patterns were found, including the maritime pattern. It is suggested that atmospheric processes associated with RST produce the land pattern. Hence, the occurrence of a maritime pattern in days identified as RST reflects an "apparent RST". The hybrid pattern was associated with an RST located east of Israel. This synoptic type produced the typical flash maximum over the land, but the upper-level trough together with the onshore winds it induced over the eastern coast of the Mediterranean resulted in lightning activity over the sea as well, similar to that of CLs. It is suggested that the spatial distribution patterns of lightning may better identify the synoptic system responsible, a CL, an "active RST" or an "apparent RST". The electrical activity thus serves as a "fingerprint" for the synoptic situation responsible for its generation.

scholarly journals A quantitative approach for analyzing the spatio-temporal distribution of 3D intracellular events in fluorescence microscopy

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Thierry Pécot ◽  
Liu Zengzhen ◽  
Jérôme Boulanger ◽  
Jean Salamero ◽  
Charles Kervrann
Keyword(s):  
Spatial Distribution ◽  
Statistical Analysis ◽  
Cell Shape ◽  
External Environment ◽  
Temporal Distribution ◽  
Cell Interaction ◽  
Spatial Coordinates ◽  
Direction Of Movement ◽  
Spatio Temporal ◽  
Endomembrane Trafficking

Analysis of the spatial distribution of endomembrane trafficking is fundamental to understand the mechanisms controlling cellular dynamics, cell homeostasy, and cell interaction with its external environment in normal and pathological situations. We present a semi-parametric framework to quantitatively analyze and visualize the spatio-temporal distribution of intracellular events from different conditions. From the spatial coordinates of intracellular features such as segmented subcellular structures or vesicle trajectories, QuantEv automatically estimates weighted densities that are easy to interpret and performs a comprehensive statistical analysis from distribution distances. We apply this approach to study the spatio-temporal distribution of moving Rab6 fluorescently labeled membranes with respect to their direction of movement in crossbow- and disk-shaped cells. We also investigate the position of the generating hub of Rab11-positive membranes and the effect of actin disruption on Rab11 trafficking in coordination with cell shape.

scholarly journals Distribusi Temporal dan Spatial Arthropoda Pada Berbagai Jenis Tumbuhan Liar di Agroekosistem

bionature ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Muhammad Richsan Yamin ◽  
Siti Annisaa'ul Kariimah ◽  
Nadya Rizky Nuzul Ramadhanti ◽  
Intan Ayu Idha Wulandari
Keyword(s):  
Spatial Distribution ◽  
Data Collection ◽  
Light Intensity ◽  
Abiotic Factors ◽  
Biological Clock ◽  
Temporal Distribution ◽  
Wild Plant ◽  
Temporal And Spatial Distribution ◽  
Temperature And Humidity ◽  
Temporal And Spatial

Abstract. The purpose of this research were to (1) analyse the temporal and spatial distribution of arthropods in the cassava and eggplant agroecosystem areas. (2) Analysing the temporal and spatial distribution of arthropods in the maize agroecosystem. This research was divided into 2 stations,  the first station which is near the trail in the eggplant and corn agroecosystem, while for the second station on the corn agroecosystem, the two research locations are in Maccorawalie Village, Watang Sawitto District, Pinrang Regency, South Sulawesi. This research use the analytical method to analyse the observations and also identify the families of each arthropod found, then count the number of arthropods in each species and measure the diversity and abundance of each wild plant found at station 1 and station 2 in the morning and afternoon. The translation of the results obtained from the results of data collection at two stations in two data collection times (morning and afternoon) in the day, where the morning is 06.00-8.00 WITA Zone, while in the afternoon at 16.00-17.30 WITA zone. This is due to abiotic factors such as temperature and humidity, where the temperature in the morning is 23°C with 92% humidity, while the afternoon temperature is 25°C with 77% humidity. Arthropods have a different temporal distribution because this is related to the biological clock in each Arthropod. Biological clock allows Arthropods to determine when to work and rest. The existence of a rhythm in insects resulted in the division of two living groups, known as diurnal (active during the day) and nocturnal. Abiotic factors in the form of light intensity, temperature and humidity, affect the activity patterns of insects that have a certain temperature range, light intensity and humidity in Maccorawalie Village, Watang Sawitto District, Pinrang Regency.Keywords: temporal distribution, spatial distribution, arthropods, agroecosystem.

Spatio-temporal distribution pattern of Calanus sinicus and its relationship with climate variability in the northern Yellow Sea

2017 ◽  
Vol 75 (2) ◽  
pp. 764-772
Author(s):  
Qing Yang ◽  
Hui Liu ◽  
Guize Liu ◽  
Yanbin Gu
Keyword(s):  
Spatial Distribution ◽  
Distribution Pattern ◽  
Yellow Sea ◽  
Cold Water ◽  
Temporal Distribution ◽  
Zooplankton Community ◽  
Central Portion ◽  
Calanus Sinicus ◽  
Northern Yellow Sea ◽  
Spatio Temporal

Abstract The spatio-temporal distribution pattern of Calanus sinicus, a key copepod species, was examined in the northern Yellow Sea (YS). Compared with 1959 and 1982, there was a significant increase in the abundance of C. sinicus in the spring, summer, and autumn of 2011 and winter of 2014. The percentage of C. sinicus in the zooplankton assemblages ranging from 45.6 to 75.8% in different seasons of 2011-2014 was significantly higher than that in 1982. Two different spatial distribution patterns of C. sinicus were observed, with higher abundance occurring nearshore during the cold season (e.g. January) and offshore in the central portion of the northern YS in the warm season (e.g. May, July, and October). The YS Cold Water Mass in the central portion of the northern YS likely provides an important over-summering site for the species. Additionally, a greater increase of the abundance of C. sinicus was found in the northern portion (the northern YS) of its spatial distribution during the past half century. This study has an implication on the climate-driven shifts in zooplankton community in the northern YS, highlighting the importance of C. sinicus in the warm-temperate ecosystem of Chinese coastal seas.

scholarly journals Spatio-temporal distribution and associated factors of anaemia among children aged 6–59 months in Ethiopia: a spatial and multilevel analysis based on the EDHS 2005–2016

BMJ Open ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. e045544
Author(s):  
Samuel Hailegebreal ◽  
Araya Mesfin Nigatu ◽  
Zeleke Abebaw Mekonnen ◽  
Berhanu Fikadie Endehabtu
Keyword(s):  
Public Health ◽  
Spatial Distribution ◽  
Health Problem ◽  
Associated Factors ◽  
Temporal Distribution ◽  
Public Health Problem ◽  
Community Level ◽  
Outcome Variable ◽  
Individual Level ◽  
Spatio Temporal

ObjectivesAnaemia is a global public health problem with major health and socioeconomic consequences. Though childhood anaemia is a major public health problem in Ethiopia, there is limited evidence on the spatio-temporal variability of childhood anaemia over time in the country. Therefore, this study aimed to assess the spatio-temporal distribution and associated factors of childhood anaemia using the Ethiopian Demographic and Health Survey (EDHS) data from 2005 to 2016.DesignSurvey-based cross-sectional study design was employed for the EDHS.SettingData were collected in all nine regions and two city administrations of Ethiopia in 2005, 2011 and 2016.ParticipantsThe source population for this study was all children in Ethiopia aged 6–59 months. A total of 21 302 children aged 6–59 months were included in this study.Outcome measureThe outcome variable was child anaemia status.ResultsThe prevalence of anaemia declined from 53.9% in 2005 to 44.6% in 2011, but it showed an increase in 2016 to 57.6%. The spatial analysis revealed that the spatial distribution of anaemia varied across the regions. The spatial scan statistics analysis indicated a total of 22 clusters (relative risk (RR)=1.5, p<0.01) in 2005, 180 clusters (RR=1.4, p<0.01) in 2011 and 219 clusters (RR=1.4, p<0. 0.01) in 2016, significant primary clusters were identified. The child’s age, mother’s age, maternal anaemia status, wealth index, birth order, fever, stunting, wasting status and region were significant predictors of childhood anaemia.ConclusionsIn this study, childhood anaemia remains a public health problem. The spatial distribution of childhood anaemia varied significantly across the country. Individual-level and community-level factors were associated with childhood anaemia. Therefore, in regions with a high risk of childhood anaemia, individual-level and community-level factors should be intensified by allocating additional resources and providing appropriate and tailored strategies.

scholarly journals Spatio-Temporal Distribution of Flash Floods in Slovenia

Dela ◽  
2016 ◽  
pp. 5-39 ◽  
Author(s):  
Tajan Trobec
Keyword(s):  
Spatial Distribution ◽  
Temporal Distribution ◽  
Temporal Analysis ◽  
Flash Floods ◽  
Seasonal Distribution ◽  
Flash Flooding ◽  
Hilly Area ◽  
Spatio Temporal

This paper examines the spatial distribution of frequency of flash floods along with their seasonal distribution. The spatio-temporal analysis of past flash flooding covered 124 flash floods affecting areas of Slovenia between 1550 and 2015. Flash floods are most common in the mountainous and hilly area of northern Slovenia, which consists of alpine and a large part of subalpine landscapes. Autumnal flash floods occur across most of the country, while summer flash floods are seen mainly in the east. In most parts of the country autumnal flash floods predominate.

scholarly journals Spatial distribution and activities of the estuarine dolphin Sotalia guianensis (van Bénédén, 1864) (Cetacea, Delphinidae) in Pontal Bay, Ilhéus, Bahia, Brazil

2010 ◽  
Vol 10 (2) ◽  
pp. 67-73 ◽  
Author(s):  
Urânia Amaral dos Santos ◽  
Martin Roberto Alvarez ◽  
Ana Cristina Schilling ◽  
Gil Marcelo Reuss Strenzel ◽  
Yvonnick Le Pendu
Keyword(s):  
Spatial Distribution ◽  
Water Depth ◽  
High Tide ◽  
Temporal Distribution ◽  
Sotalia Guianensis ◽  
Direct Observations ◽  
Average Group ◽  
Spatio Temporal ◽  
Estuarine Dolphin ◽  
Average Group Size

We analyzed the influence of time, tide and water depth on the activity and spatial distribution of estuarine dolphins Sotalia guianensis in Pontal Bay, Ilhéus, Brazil. Direct observations were carried out at four fixed points from January to December of 2006. Estuarine dolphins were sighted in 11 out of 12 months and in 30% of 181 sampling periods. The average group size, which was 3.75 ± 1.59 (n = 64), did not vary significantly by month (Kruskal-Wallis, H = 10.6729; p = 0.3836). Infants and adults represented 18 and 82% of the individuals whose age we were able to determine, respectively. Estuarine dolphins were more frequently present than expected in areas deeper than 3 m (regression GLM, z = 3.773; p = 0.0002). The animals were more frequently observed between 7:00 and 8:00 AM and between 3:00 and 5:00 PM (X² = 83.815; p < 0.0001). Their presence in the bay tripled between the fourth hour of the flood and high tide, remaining elevated during the ebb tide (X² = 22.152; p = 0.02). The tide also influenced the animals' feeding and travelling direction, mainly toward the open see during the flood and to the back of the bay during others stages. Further studies are necessary to analyze the influence of the hydrographic characteristics of Pontal Bay on the spatio-temporal distribution of estuarine dolphins and their prey.

scholarly journals Spatio Temporal Distribution of Anthrax in Sulawesi 2015-2018

2020 ◽  
pp. 7-13
Author(s):  
Titis Furi Djatmikowati ◽  
Dini Wahyu Yudianingtyas ◽  
Haeriah Haeriah
Keyword(s):  
Information System ◽  
Spatial Distribution ◽  
Geographic Information System ◽  
Rainy Season ◽  
Endemic Area ◽  
Temporal Distribution ◽  
Risk Area ◽  
Epidemic Curve ◽  
South Sulawesi ◽  
Spatio Temporal

Three among five Provinces (South Sulawesi, West Sulawesi and Gorontalo) in Sulawesi island, Indonesia are endemic area of anthrax disease. The aim of this study was to describe the dynamic of anthrax during 2015-2018 and identified risk area in Sulawesi. We determined case of anthrax disease from passive-active surveillance data Disease Investigation Center Maros (DIC Maros) during 2015-2018. Spatial distribution describe by mapping using Quantum Geographic Information System (QGIS), the temporal distribution describe using epidemic curve and we calculated the proportion of animal infected of anthrax. There were thirty-three cases of anthrax spreaded into three Provinces in Sulawesi, there were twenty one cases in South Sulawesi (63.6%), nine cases in Gorontalo (27.3%) and three cases West Sulawesi (9.1%). There were eleven cases (33.3%) in 2015, fifteen cases (45.5%) in 2016, four cases (12%) in 2017 and three cases (6%) in 2018. Anthrax occured respectively in dry season in South Sulawesi and Gorontalo, different with West Sulawesi anthrax occured in rainy season. The proportion of the animal infected were 87% in cattle, 7% in horse, 3% goat and 3% in deer. Vaccination of anthrax in South Sulawesi and Gorontalo should be conducted in May; in Polewali Mandar, West Sulawesi in Februari.

Analysis on the Spatio-Temporal Distribution Characteristics of Atmospheric Dustfall in Jinan City

2014 ◽  
Vol 955-959 ◽  
pp. 1587-1590
Author(s):  
Fen Zhao ◽  
Li Rong Xu
Keyword(s):  
Spatial Distribution ◽  
Temporal Distribution ◽  
Ecological Environment ◽  
Distribution Characteristics ◽  
Spring Season ◽  
Temporal And Spatial Distribution ◽  
Jinan City ◽  
Temporal And Spatial ◽  
Spatio Temporal ◽  
One Year

The data of 116 atmospheric dust monitoring points in Jinan from 2009 to 2012 were analyzed. The average annual atmospheric dustfall was maintained at 10.47 to 14.34 t•km-2•month-1, and the change was less than 15.14%. Within one year, the atmospheric dustfall was mainly concentrated in the spring season (March to May), accounting for 27.72% to 33.44% of the annual dustfall. The lowest dustfall was concentrated in September to November. The dustfall in Jinan City was generally in a decreasing trend. The dustfall of each district is different from one another, the arrangement of 6 districts in Jinan is Huaiyin> Tianqiao> Shizhong> Licheng> Lixia>Changqing. Special meteorological and ecological environment are the mainly factors to influence temporal and spatial distribution of the dustfall in Jinan.

scholarly journals Spatio-Temporal Patterns of Fitness Behavior In Beijing Based on Social Media Data

2021 ◽  
Author(s):  
Tian Bin ◽  
Meng Bin ◽  
Zhi Guoqing ◽  
Qi Zhenyu ◽  
Chen Siyu ◽  
...  
Keyword(s):  
Social Media ◽  
Spatial Distribution ◽  
Latent Dirichlet Allocation ◽  
Temporal Distribution ◽  
Temporal Patterns ◽  
Social Media Data ◽  
Periodic Distribution ◽  
Spatio Temporal ◽  
Southern City ◽  
Media Data

Abstract Using social media data, this paper employs FastAI, Latent Dirichlet Allocation (LDA) and other text mining techniques coupled with GIS spatial analysis methods to study temporal and spatial patterns of fitness behavior of residents in Beijing, China, from the perspective of residents’ daily behavior. Using LDA theme model technology, it is found that fitness activities can be divided into four types: running-based fitness; riding-based fitness; fitness in sports venue; and fitness under professional guidance. Emotional analysis revealed that, residents can get a better fitness experience in sports venues. There are also obvious differences in the spatio-temporal distribution of the different fitness behaviors. Fitness behavior of Beijing residents has a multi-center spatial distribution pattern, with a wide coverage in northern city areas but obvious aggregation areas in southern city areas. In terms of temporal patterns, the residents' fitness frequency shows an obvious periodic distribution (weekly and 24 hours). And there are obvious differences in the time distribution of fitness behaviors for each theme. Additionally, based on the attribution analysis of a geodetector, it is found that the spatial distribution of fitness behavior of residents is mainly affected by factors such as catering services, education and culture, companies and public facilities.

Sign in / Sign up

Export Citation Format

Share Document