Beginning Of August Research Articles

Bacterioplankton of the Western Part of the Kara Sea

Data on the structural and production characteristics of bacterioplankton in the western part of the Kara Sea at the beginning and in the middle of summer are presented. In the region of the St. Anna Trough slope, the average abundance of prokaryotes for the water column was (594–708) × 103 cells/ml (26.4–36.5 mgC/m3) in June and (247–517) × 103 cells/ml (12–28 mgC/m3) at the beginning of August. On the transect along Novaya Zemlya, the average abundance of bacterioplankton in the water column was (186–554) × 103 cells/mL (8.5–30 mgC/m3) within a week after the seasonal ice and (169–443) × 103 cells/mL (8–21 mgC/m3) in the midsummer. Bacterial specific growth rate did not exceed 1.28 day–1; its high values were observed in the upper warm water layer, above the halocline, and also at the near-bottom depths. At the beginning of summer, the production of bacterioplankton tended to decrease in the northeast direction. The distribution of prokaryotes abundance was determined by temperature and water saturation with oxygen, possibly as an indirect indicator of past phytoplankton “bloom”.

Aмпелографска характеристика на интродуцирани в България десертни сортове лози

A brief ampelographic characteristic of the introduced table grapevine cultivars from P. R. China - Kyoho, Shennong Jinhuanghou, Bixiang Wuhe, and Hanxiangmi was done. According to the period of onset of consumptive ripeness of the grapes, under the specific soil-climatic conditions, the Hanxiangmi cultivar belongs to the group of „very early ripening“ cultivars (beginning of August), and the rest to the group of „early ripening“ (the second half of August). The studied cultivars are distinguished by good adaptive potential and manage to fully develop their qualities in the study area. They are characterized by high fertility and yield, large and attractive clusters, very large berries, and high quality and high transportability of the grapes. They have increased resistance to downy mildew (Plasmopara viticola) and low winter temperatures. The seedless cultivar Hanxiangmi has a very high and relatively constant fertility over the years, with a high proportion of fruit shoots developed from additional and dormant buds.

Dynamics of Potato Virus Y Infection Pressure and Strain Composition in the San Luis Valley, Colorado.

The San Luis Valley (SLV), Colorado, is the second-largest fresh-potato-growing region in the United States, which accounts for about 95% of the total production in Colorado. Potato virus Y (PVY) is the leading cause of seed potato rejection in the SLV, which has caused a constant decline in seed potato production over the past two decades. To help potato growers control PVY, we monitored the dynamics of PVY infection pressure over the growing seasons of 2022 and 2023 (May through August) using tobacco bait plants exposed to field infection weekly. PVY infection dynamics were slightly different between the two seasons, but July and August had the highest infection in both years. The first PVY infection was detected in the second half of June, which coincides with the emergence of potato crops in the valley. PVY infection increased toward the beginning of August and declined toward the end of the season. Three PVY strains were identified in tobacco bait plants and potato fields, namely PVYO, PVYN-Wi, and PVYNTN. Unlike other producing areas of the United States, PVYO is still the major strain infecting potato crops in Colorado, comprising ∼40% of total PVY strain composition. This could be explained by the prevalence of the potato cultivar Russet Norkotah that lacks any identified N genes, including the Nytbr that controls PVYO, which imposes no negative selection against this strain. The current study demonstrated the usefulness of bait plants to understand PVY epidemiology and develop more targeted control practices of PVY.

Physiological, anthropometric and athletic performance adaptations from completing a 1-month pre-season period. A two-year longitudinal study in female collegiate soccer players.

Collegiate coaches and integrative support staff often utilize pre-season as a brief and intense training period to prepare athletes technically, tactically, and physiologically, to meet the demands of competition during a soccer season. This study sought to examine the dose-response from performing on-field soccer activities during a four-week pre-season period in female collegiate soccer players, and if the magnitude in response was associated with accumulated exercise stress. A total of twenty-seven healthy female soccer players training as part of a collegiate soccer program volunteered to participate in this two-year longitudinal study. Data collection commenced prior to the start of each pre-season period, at the beginning of August, and was completed at the beginning of September, when pre-season ended. Data collection periods were separated by a 31-day period. Indices of cardiovascular function, anthropometry, and athletic performance were examined during each data collection period. Internal and external measures of accumulated exercise stress were recorded using the Polar Team Pro® system. When comparing the beginning to the end of pre-season, significant improvements were observed in body fat (%) [24.2 ± 6.0 "vs." 23.3 ± 5.6, p = 0.001], heart rate variability (rMSSD) [51.8 ± 25.1 "vs." 67.9 ± 34.6 ms, p = 0.002], resting heart (bpm) [73.8 ± 12.1 "vs." 64.3 ± 8.8, p = 0.001] and cardiorespiratory performance (YoYo IRTL-1) [925.8 ± 272.8 "vs." 1,062.6 ± 223.3 m, p = 0.001]. Significant reductions in musculoskeletal performance were observed through vertical jump height (cm) [24.9 ± 23.7, p = 0.04]. Change in the end of pre-season body weight (kg) was significantly associated with accumulated accelerations and decelerations [r ≥ 0.49, p = 0.01]. End of pre-season change in cardiorespiratory performance was significantly associated with both accumulated training load (au) and TRIMP (au) [r ≥ 0.63, p = 0.01]. In conclusion, performing a four-week pre-season period, involving only on-field training, can promote positive and significant adaptations in anthropometry, cardiovascular function, and athletic performance measures in female collegiate soccer players. The magnitudes of these adaptations were associated with both internal and external measures of accumulated exercise stress.

First Detection of West Nile Virus Lineage 2 in Mosquitoes in Switzerland, 2022.

West Nile virus (WNV) is one of the most widespread flaviviruses in the world, and in recent years, it has been frequently present in many Mediterranean and Eastern European countries. A combination of different conditions, such as a favourable climate and higher seasonal average temperatures, probably allowed its introduction and spread to new territories. In Switzerland, autochthonous cases of WNV have never been reported, and the virus was not detected in mosquito vectors until 2022, despite an entomological surveillance in place in Canton Ticino, southern Switzerland, since 2010. In 2022, 12 sites were monitored from July to October, using BOX gravid mosquito traps coupled with honey-baited FTA cards. For the first time, we could detect the presence of WNV in FTA cards and mosquitoes in 8 out of the 12 sampling sites monitored, indicating an unexpectedly widespread circulation of the virus throughout the territory. Positive findings were recorded from the beginning of August until mid-October 2022, and whole genome sequencing analysis identified a lineage 2 virus closely related to strains circulating in Northern Italy. The entomological surveillance has proved useful in identifying viral circulation in advance of possible cases of WNV infection in humans or horses.

Quantitative, Qualitative and Thermal Aspects of Rainwater Retention on Wetland Roofs

Wetland roofs (WRs) are a multi-functional green infrastructure measure to mitigate the negative effects of climate change. The present work advances knowledge in the field of WRs by analyzing the performance of rainwater management, focused on water sufficiency, water quality and cooling potential. Automatic monitoring, covering weather conditions, temperature and the conductivity of WR water, and the amount of outflow into retention tanks, was supported with automated sampling of water for laboratory analysis of BOD5, phosphate phosphorus, suspended solids, electrical conductivity (EC), redox potential (Eh), color and pH. From April to September 2022, a precipitation deficit of 395.45 mm and a negative climatic water balance of 267.91 mm were observed. It was necessary to fill up the system several times in order to maintain water at the assumed level. In most cases, the values of EC observed during the monitoring period were higher than those reported for rainwater. Continuous monitoring of EC in the wetland was a useful tool for the observation of operating activities in the system; however, it was not sufficient for system control. BOD5 values did not exceed 6 mg dm−3 and were lower than reported for urban rainwater retention reservoirs. Suspended solids values did not exceed 27 mg dm−3. Color varied between 0 and 101 PtCo, with the highest values noted in July and the beginning of August. The pH value ranged between 7.28 and 8.24. The Eh varied between 155 and 306 mV, with lower values associated with the filling up of the wetland. Peak values of PO4-P were observed between the end of July and the beginning of September 2022, with a maximum concentration of 232 µg dm−3 utilized by the wetland within one month. Monitoring of the water and air temperature showed a thermal buffering effect of the wetland. The results of the research, conducted during the growing season, allow for better management of rainwater on the roof. However, there is a need to expand the scope of the analyzed water quality parameters. Although there are several limitations to the analysis, the present study partially fills the existing knowledge gap and may generate further interest in this topic among researchers and decision-makers.

How does grazing pressure affect feed intake and behavior of livestock in a meadow steppe in northern China and their coupling relationship

Livestock feeding behavior and intake play a crucial role in influencing grassland health and productivity. A comprehensive investigation into livestock feeding behavior and intake can effectively elucidate the interactions and impacts of livestock and grasslands, providing scientific evidence and technical support for the formulation and implementation of sustainable grassland development strategies. Based on a long-term controlled grazing experiment platform conducted over 13 years, the feeding behavior and forage intake of cattle under different grazing intensities were observed and analyzed. Additionally, we used GPS sensors to study cattle grazing behavior trends. Using Mantel's test, we analyzed the relationship between cattle movement distance, forage intake, and environmental factors. The results demonstrated that cattle forage intake decreased with increasing grazing intensity. Forage intake peaked at the end of July and beginning of August, with the highest efficiency observed in August. Moreover, under light grazing intensity, cattle exhibited greater fluctuations in forage intake than those under moderate and heavy grazing intensity. Cattle movement levels increased with higher grazing intensity, and during the period of lush grass growth, cattle displayed significantly higher movement levels than during grass senescence. The accuracy of the behavior determination model based on cattle velocity ranged from 60 to 80 %. Using this model, we found that under heavy grazing conditions, cattle spent significantly more time roaming than under light and moderate grazing. Conversely, under light grazing conditions, cattle spent significantly more time feeding. A negative correlation was identified between cattle forage intake and movement distance. Cattle's forage intake was significantly positively correlated with grass height and grass biomass and significantly negatively correlated with stocking rate and movement distance. Thorough research on livestock feeding behavior and intake offers scientific evidence and technical support for formulating and implementing sustainable grassland development strategies.

ENHANCEMENT OF ENERGY EFFICIENCY AND BIOSPHORE COMPATIBILITY OF BUILDINGS AND STRUCTURES IN UKRAINE

The use of alternative energy sources is one of the most important areas of modern energy policy, aimed both at improving the environment and saving traditional fuel and energy resources. Adopted legislative and regulatory acts contributed to the rapid growth of "green" energy in Ukraine. The meaning of the ecological and energy optimization process is not to replace one energy source with another, but economic and industrial transformation, decarbonization and decentralization. 
 A technical solution to the problem regarding the source of alternative energy due to the use of heat in the surface layers of the earth's crust is proposed. At the depth of placement of probes-heat exchangers, which are structurally part of heat pump installations, the soil temperature is practically unchanged throughout the year and is positive. Non-freezing glycol solutions are used to increase the operational reliability of the installations. 
 To study the process of thermal interaction in the zone of placement of heat exchanger probes, mathematical modeling using the finite element method was applied. As a result, a significant array of data was obtained, which reflects the dynamics of temperature fields in different modes of operation of ground-source heat pump installations with vertical probes. 
 Of particular interest is the analysis of temperature fields along the depth of the well. After the seasonal selection of heat - the end of the heating period - the minimum temperature of the soil in the boundary zone of the geothermal probe is not lower than 0 0С. That is, freezing of soil rocks does not occur. 
 In the warm period of the year, due to, for example, the working air conditioning system of the building, the energy source of which is the heat pump installation, regeneration of the primary circuit takes place. The average temperature of the rocks between the probes at the beginning of August is, according to calculations, 6.5 0С. 
 The obtained results of analytical studies were used in the design of a ground heat pump installation for the energy supply needs of a public building with an estimated thermal capacity of 200 kW.

New data on distribution and biology of Blastobasis glandulella (Riley, 1871) (Lepidoptera: Blastobasidae) in Ukraine

Blastobasis glandulella (Riley, 1871) is an invasive species North American origin that is known from Ukraine since 2009. The species was identified based on imago and caterpillars. The species is confirmed to occur in seven regions of Ukraine: Zakarpattia, Ivano-Frankivsk, Kyiv, Poltava, Ternopil, Khmelnytskyi, and Cherkasy. Caterpillars was found inside acorns of pedunculate oak (Quercus robur L.). The moths begin emerges at the end of May–the beginning of June, and lasts until the beginning of August. Caterpillars overwinteres inside acorns on the soil surface and in the forest litter. Pupation takes place inside acorns. The species is potential dangerous for forestry. Diagnostic features of imago, larva and pupa are given and illustrated

Reproductive behaviour of Forficula vicaria Semenov, 1902 (Dermaptera, Forfi culidae)

Information on copulation and reproduction of the earwig For cula vicaria Semenov (Dermaptera, For culidae) in Primorskii Territory is presented. The total period of reproductive activity lasts from 47 to 52 days. The rst copulating pairs were recorded at the beginning of the 3rd ten days of August, and the last ones, in mid-October. The time of the joint stay of the male and female before the start of copulation in the cages was 28 days for the pair formed at the end of July, 17 days at the beginning of August, 5 days in the middle of August, and less than a day at the end of August. Over the entire period of observation of individual pairs, 11-17 repeated copulations were registered. During the day, the number of repeated copulations in this species ranged from one to three, each lasting from 30 minutes to 10 hours with interruptions from 20 minutes to 9 hours, and, after copulation, active feeding of insects was observed for 1.5-4 hours. Females start laying eggs at the end of September. The fecundity of females ranges from 52 to 71 eggs, and the number of eggs laid between matings during the day ranges from 4 to 33. Mature eggs are present in the ovaries of females until mid-October. For cula vicaria is characterized by the parental care for o spring. Under natural conditions, from mid-September, earwigs dig holes in which they hibernate, protecting the eggs.

Onion stemphiliosis in the South of Ukraine

Onion stemphiliosis is a relatively new disease in Ukraine, so a deeper study of Stemphylium, the species composition of the pathocenosis, and isolation and determination of the species belonging of pathogens of the disease are relevant. The purpose of the study was to examine the species composition of pathocenosis, the biofenology of the causative agent of stemphiliosis, and determine the effectiveness of fungicides for further control of stemphiliosis in onion crops. The main research methods were: field – to determine the spread, development, and harmfulness of stemphiliosis; laboratory – to examine pathogens of onion diseases; visual and mathematical – statistical. The method of mycological crops on potato-dextrose agar (PDA) was used in the work. Field surveys in 2019-2021 established the spread and development of stemphiliosis in onion plantings in the Odesa District of the Odesa region. It was identified that the growing season of 2021 was the most favourable for stemphiliosis, when against the background of high humidity and air temperatures, the spread of the disease was 100%, and the development of the disease reached 79%. In onion crops, the disease developed unevenly, its spread was low in June, with rapid growth in July. At the beginning of August, the percentage of the disease reached 80%. Eight types of fungi were identified, of which Stemphylium vesicarium (Wallr.) Simm, Stemphylium botryosum Wallr, Stemphylium herbarum Simm. – are pathogens of onion stemphiliosis. Laboratory studies established the frequency of their distribution in samples. It is proved that five-time spraying with fungicides helps to reduce the further development of stemphiliosis in onion plantings. The high effectiveness of spraying plants with appropriate fungicides with the active substance fluopyram (200 g/l) + tebuconazole (200 g/l) and fluoxastrobin (100 g/l) + prothioconazole (100 g/l) to suppress the development of spores of pathogens is proven. The provisions and conclusions on the phytosanitary condition of onion plantations in the Odesa region are further developed. The results of the research can serve to develop recommendations for production on the implementation of measures to protect onions from stemphiliosis

The dynamics of wild populations of Henosepilachna vigintioctomaculata Motch. (<i>Coleoptera:Coccinellidae</i>) in Primorsky Krai

Relevance. Population dynamics (population waves) is an intrinsic quality of population systems. These fluctuations can be induced by various factors, e.g. environmental conditions and resource availability, elements of a food chain from the same or a higher level (competitors, parasites, predators), and diseases. Few researchers have addressed the issue of the population dynamics of Henosepilachna vigintioctomaculata in the Russian Far East. This paper investigates the reasons why the potato ladybird beetle became a pest of introduced cultivated plants.Materials and methods. To collect data on imagines, all research sites were examined at intervals of eight days during the entire period of the study. The examination of the research sites was conducted within one day. All the imagines taken from host plants were marked at the first encounter by puncturing their elytra with a sewing needle (0.4 mm in diameter) according to Hirano. The next generation of beetles was marked with nail polish (in two-three days after emergence) to avoid traumatizing the insects. At the second encounter, these beetles were also marked by puncturing their elytra with a needle. The methods implemented did not have an adverse effect on the survivability of the studied imagines. The beetles were released to the same plants where they had been taken from. The research data were analyzed by Jolly’s method.Results. Overwintered imagines appeared in the fields and began ovipositing at the end of May. The first generation of imagines appeared at the end of June – the begging of July. The second generation of imagines could be observed at the end of July – the beginning of August. A part of the imagines migrated to overwintering sites without ovipositing approximately at the end of August. The overwintered beetles were observed to emerge on the Mongolian oak Q uercus mongolica, the greater celandine Chelidonium majus, and the bird cherry Prunus padus. A typical primary biotope of the potato ladybird beetle was a potato field at the stage of vegetative growth (5-7 leaves) surrounded by the couch grass Elymus repens, the common dandelion Taraxacum officinale, and the perennial sow-thistle Sonchus arvensis. Marking the overwintered and new generations of imagines showed that the presence of the potato ladybird beetle in an ecosystem depended on agricultural and agrometeorological conditions.

A first insight into the post-breeding dispersal strategies of adult Lesser Kestrels Falco naumanni in Italy

ABSTRACT Capsule After breeding, Lesser Kestrels Falco naumanni do not migrate directly to Africa but exhibit a post-breeding dispersal that lasts several weeks. Tracking of four adult individuals provides the first data on distances and direction of travel, and suggests sex differences in post-breeding dispersal. Aims We aimed to: (a) detect the dispersal routes and stopover sites used by adult Lesser Kestrels during the post-breeding period in Italy, (b) deduce the strategies behind the observed dispersal behaviour, and (c) advance hypotheses about the determinants of such strategies. Methods Using Argos satellite telemetry, we tracked four individuals at neighbouring urban colonies at Gravina and Altamura (Apulia region), within the geographical area (Alta Murgia) which has the world’s highest known density of urban nesting Lesser Kestrels. Results Argos devices provided 4930 high-quality locations for 72 ± 13 (mean ± SD) days for four individuals tracked during July–September. July corresponded to the post-nestling period, with recorded dispersal distances less than 66 km from the breeding site. At the beginning of August, the birds entered the pre-migration period, with recorded dispersal distances up to 667 km from the colony. We detected four dispersal strategies: absolute fidelity to the breeding site, and short-range, mid-range, and long-range dispersal. The males had long-range and mid-range dispersal routes parallel to the eastern side of the Apennine ridge, and selected several stopover sites in central and northern Italy. The females showed absolute fidelity to the breeding site and short-range dispersal. We hypothesize that males and females had different body conditions at the beginning of the pre-migration period, which forced females to remain close to the breeding site while males could disperse further. Conclusions This work sheds light, for the first time, on the post-reproductive dispersal behaviour and schedule of the Lesser Kestrel in Italy.

Boufaroua (Oligonychus afrasiaticus) in Tolga palm groves in 2021

Global warming, which has affected the entire globe, has increased the activity of crop pests. The Boufaroua (Oligonychus afrasiaticus) is among the serious threats to date production in Algeria. Through regular monitoring, field surveys and recording of temperature and relative humidity data within the Tolga palm grove (known for the famous 'Deglet Nour' date), it was found that the spider of this date palm in 2021 has expanded in the study area. This spider, in addition to half-soft cultivars, has exceptionally attacked soft and dry cultivars during this year. The multiplication of this tiny spider increases when the average air temperatures follow an upward trend (above 30 °C) and the relative air humidity registers a perpetual decrease (below 35 %); two important waves of Boufaroua propagation were recorded, the first one during the second dekad of June and the second one at the beginning of August. Farmers in the study area did not apply preventive control of Oligonychus afrasiaticus and resorted to curative control, when the pest appeared; where chemical treatments were most frequent. Nevertheless, a part of the farmers uses inherited (traditional) practices, while a minority uses household detergents.

Growing Season, Cultivar, and Nitrogen Supply Affect Leaf and Fruit Micronutrient Status of Field-Grown Kiwiberry Vines

The N uptake can affect kiwiberry yield and quality; however, the relationship between an increasing N dose and micronutrient accumulation in leaves and fruit is still to be elucidated. Interrelationships between essential nutrients are one of the most important issues in terms of effectiveness in plant mineral nutrition. A pattern in leaf nutrient accumulation throughout the growing period is required to indicate a suitable sampling time for the purpose of nutrient diagnostics and controlled plant feeding. The experiment was conducted on two commercially available cultivars of kiwiberry, 'Weiki' and 'Geneva', during the 2015-2016 growing seasons with an increasing soil N fertility (30-50-80 mg N kg-1 soil DW) to test the relationship between soil N level and leaf/fruit micronutrient concentration. The leaf Zn, Cu, Fe, and Mn concentrations significantly increased with a higher N supply in 'Geneva', while in 'Weiki' only Mn increased. Leaf B, Fe, and Mn gradually increased throughout the growing season, while Cu decreased. Between mid-July and the beginning of August, the lowest fluctuations in the micronutrient contents were recorded. The effect of the growing season on leaf micronutrient accumulation was highly significant; except for Fe, significantly higher micronutrient levels were revealed in 2016. Compared to the leaves, the growing season effect was smaller in the case of fruit micronutrient concentrations. Irrespective of cultivar, the increase in N fertilization resulted in a higher fruit Mn concentration and was insignificant in the case of other micronutrients. The results indicate that the N dose may affect the accumulation of micronutrients within a certain range depending on the tissue type and the genotype.

COVID-19 and the ASEAN stock market: a wavelet analysis of conventional and Islamic equity indices

Purpose The purpose of this study is to examine the impact of the COVID-19 pandemic on Association of Southeast Asian Nations (ASEAN) Islamic and conventional equities. Design/methodology/approach To study the impact of the COVID-19 pandemic on ASEAN Islamic and conventional equities, first, the authors calculated the volatility by using exponential generalized autoregressive conditional heteroscedasticity methodology and then used Wavelet methodology to see the co-movement between the volatility and returns of ASEAN equity market indicators and COVID-19 cases. Findings The authors find that until the beginning of August, COVID-19 adversely relates to the returns of both the indices. The conventional index seemed to have increased volatility during the time period, whereas the Islamic index seemed to have declined volatility. Originality/value To the best of the authors’ knowledge, this is one of the very few studies examining the impact of the COVID-19 pandemic on ASEAN Islamic and conventional equities. Additionally, this study adds value by comparing Islamic and conventional equities.

Investigation of COVID-19 Misinformation in Arabic on Twitter: Content Analysis.

BackgroundThe COVID-19 pandemic has been occurring concurrently with an infodemic of misinformation about the virus. Spreading primarily on social media, there has been a significant academic effort to understand the English side of this infodemic. However, much less attention has been paid to the Arabic side.ObjectiveThere is an urgent need to examine the scale of Arabic COVID-19 disinformation. This study empirically examines how Arabic speakers use specific hashtags on Twitter to express antivaccine and antipandemic views to uncover trends in their social media usage. By exploring this topic, we aim to fill a gap in the literature that can help understand conspiracies in Arabic around COVID-19.MethodsThis study used content analysis to understand how 13 popular Arabic hashtags were used in antivaccine communities. We used Twitter Academic API v2 to search for the hashtags from the beginning of August 1, 2006, until October 10, 2021. After downloading a large data set from Twitter, we identified major categories or topics in the sample data set using emergent coding. Emergent coding was chosen because of its ability to inductively identify the themes that repeatedly emerged from the data set. Then, after revising the coding scheme, we coded the rest of the tweets and examined the results. In the second attempt and with a modified codebook, an acceptable intercoder agreement was reached (Krippendorff α≥.774).ResultsIn total, we found 476,048 tweets, mostly posted in 2021. First, the topic of infringing on civil liberties (n=483, 41.1%) covers ways that governments have allegedly infringed on civil liberties during the pandemic and unfair restrictions that have been imposed on unvaccinated individuals. Users here focus on topics concerning their civil liberties and freedoms, claiming that governments violated such rights following the pandemic. Notably, users denounce government efforts to force them to take any of the COVID-19 vaccines for different reasons. This was followed by vaccine-related conspiracies (n=476, 40.5%), including a Deep State dictating pandemic policies, mistrusting vaccine efficacy, and discussing unproven treatments. Although users tweeted about a range of different conspiracy theories, mistrusting the vaccine’s efficacy, false or exaggerated claims about vaccine risks and vaccine-related diseases, and governments and pharmaceutical companies profiting from vaccines and intentionally risking the general public health appeared the most. Finally, calls for action (n=149, 12.6%) encourage individuals to participate in civil demonstrations. These calls range from protesting to encouraging other users to take action about the vaccine mandate. For each of these categories, we also attempted to trace the logic behind the different categories by exploring different types of conspiracy theories for each category.ConclusionsBased on our findings, we were able to identify 3 prominent topics that were prevalent amongst Arabic speakers on Twitter. These categories focused on violations of civil liberties by governments, conspiracy theories about the vaccines, and calls for action. Our findings also highlight the need for more research to better understand the impact of COVID-19 disinformation on the Arab world.

Mass tilapia (Oreochromis mossambicus) mortality in floating net cages at Batur Lake, Bangli Regency, Bali Province: a case report

The mass death of tilapia (Oreochromis mossambicus) is the cause of the outbreak of mass death of cultured fish in floating net cages in Batur Lake, Bangli, Bali. The data were collected employing a field survey as material for formulating countermeasures. The sampling area is the Batur Lake, Bangli area, the center for tilapia cultivation in Bali Province. The results of our field investigation show that the upwelling phenomenon caused the cause of the mass death that occurred. The incident happened at the beginning of August, which began with changes in water temperature and wind direction (wind-driven motion). Changes in water temperature cause a mass of nutrient-rich water to move to the lake's surface, thereby reducing dissolved oxygen (DO) levels, which are contained in the water. The high stocking density and accumulation of nutrients from agricultural and anthropogenic activities are the main factors for this outbreak. With this outbreak of mass mortality of cultured fish, the government and relevant authorities are expected to manage the health of the aquaculture environment wisely and issue circulars regarding this case, especially in the center of tilapia cultivation in Batur Lake.

Działania mobilizacyjne województw prowincji małopolskiej w lecie 1675 r.

At the beginning of July 1675, John III Sobieski issued a proclamation regarding the second call to arms for a mass mobilization, which ordered the nobility in the Crown to start preparations for a military campaign. The voivodeships from the western and northern Crown were obliged to take measures only for a prospective military expedition of the commoners (pospolitacy), which was to take place after the announcement about the third call to arms (wici). In turn, men from the south-eastern voivodeships were to gather in the local camps and fight off the attacks of the marauding Tartars or strengthen the garrisons of the local cities. The noblemen from the areas most endangered by the invasion of the Turkish and Tartar forces took measures of mobilising nature. Initially, they were gathering at the expedition councils (sejmiki ekspedycyjne) and then they were making inspections during the enlistments. Toward the end of July, these activities were continued by the nobility from the Land of Przemyśl, Sanok, Drohiczyn, and from the Voivodeship of Lublin. At the beginning of August, mobilization was announced for the Land of Chełm, County of Biecz, and Voivodeship of Sandomierz. John III managed to stop the invaders near Lviv and gave up on sending the last call to arms. Due to this decision, the commoners from the voivodeships situated in the province of the Lesser Poland did not take part in the military operations.

Estimating Suspended Sediment Fluxes from the Largest Glacial Lake in Svalbard to Fjord System Using Sentinel-2 Data: Trebrevatnet Case Study

Glacier-fed hydrological systems in high latitude regions experience high seasonal variation in meltwater runoff. The peak in runoff usually coincides with the highest air temperatures which drive meltwater production. This process is often accompanied by the release of sediments from within the glacier system that are transported and suspended in high concentrations as they reach the proglacial realm. Sediment-laden meltwater is later transported to the marine environment and is expressed on the surface of fjords and coastal waters as sediment plumes. Direct monitoring of these processes requires complex and time-intensive fieldwork, meaning studies of these processes are rare. This paper demonstrates the seasonal dynamics of the Trebrevatnet lake complex and evolution of suspended sediment in the lake and sediment plumes in the adjacent Ekmanfjorden. We use the Normalized Difference Suspended Sediment Index (NDSSI) derived from multi-temporal Sentinel-2 images for the period between 2016–2021. We propose a new SSL index combining the areal extent of the sediment plume with the NDSSI for quantification of the sediment influx to the marine environment. The largest observed sediment plume was recorded on 30 July 2018 and extended to more than 40 km2 and a SSL index of 10.4. We identified the greatest sediment concentrations in the lake in the beginning of August, whereas the highest activity of the sediment plumes is concentrated at the end of July. The temporal pattern of these processes stays relatively stable throughout all ablation seasons studied. Sediment plumes observed with the use of optical satellite remote sensing data may be used as a proxy for meltwater runoff from the glacier-fed Trebrevatnet system. We have shown that remote-sensing-derived suspended sediment indexes can (after proper in situ calibration) serve for large scale quantification of sediment flux to fjord and coastal environments.