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    Wyświetlanie 1-8 z 8
    Tytuł:
    Expected harmfulness of gnawing phyllophagous insects in urban stands of Kharkiv City
    Autorzy:
    Kukina, Olga
    Kardash, Eugenia
    Shvydenko, Inna
    Powiązania:
    https://bibliotekanauki.pl/articles/2040939.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    larvae size
    prevalence
    duration of nutrition
    ability to outbreaks
    Opis:
    Urban stands are becoming increasingly important in improving the environmental health and liveability of cities. However, they weaken as a result of technogenic air pollution and become vulnerable to pests, particularly to non-native forest insects. The aim of this research was to assess potential harmfulness (bionomically determined harmfulness [BDH]), environmentally determined harmfulness (EDH) and generally expected harmfulness (GEH) of the gnawing phyllophagous lepidopterous insects in the green stands of Kharkiv (Ukraine). All supplementary parameters were assessed by analysis of publications and the own experience of authors. BDH was evaluated as a product of the duration of larvae nutrition (p1) and an index of larvae nutrition (p2). An index of larvae nutrition (p2) was considered being proportional to their imago wingspan. EDH was evaluated as a product of the value of damaged tree species (p3), location of plant damage (p4), the period of loss decorative effect (p5) and the prevalence of certain insect species in the stands (p6). GEH was estimated as a product of BDH, EDH and the ability of insect species to the outbreaks (p7). A modified approach for evaluation BDH, EDH and GEH was suggested and implemented, considering phyllophagous leaf miner insects and phyllophagous insects with open lifestyle in the deciduous stands of streets, parks, and Forest Park of Kharkiv city. EDH of insects with an open lifestyle depends on their size and prevalence in the stand. EDH and GEH of all revealed insects with an open lifestyle increase from streets to Forest Park. Among the insects with an open lifestyle, Lymantriidae and Notodontidae had the highest BDH due to the large size and long feeding period of larvae. Among the insects with hidden lifestyle, Cameraria ohridella had the highest BDH due to the highest prevalence and the large duration of feeding period with its several generations.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 4; 267-275
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Association between socio-demographic factors, healthy lifestyle factors, and infection prevention behavior among University students: a cross-sectional study
    Związek pomiędzy czynnikami społeczno-demograficznymi, czynnikami zdrowego stylu życia i zachowaniami zapobiegającymi zakażeniom wśród studentów uniwersytetu: badanie przekrojowe
    Autorzy:
    Gill, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2048069.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
    Tematy:
    infection transmission
    community medicine
    prevention and control
    pandemics
    disease outbreaks
    epidemiology
    Opis:
    Background. This study investigated the association between infection prevention behavior and socio-demographic and other lifestyle factors among the Lithuanian public and private university students. Material and methods. The cross-sectional survey took place from 15 January to 28 February 2021, and a total of 234 students responded to the survey. Survey questions included socio-demographic factors, compliance to hand hygiene, attitude towards vaccination, safe sexual behavior and risky sexual behavior, self-rated health, eating habits, physical activity, and compliance with COVID-19 preventative measures. Independent sample t-test, oneway ANOVA, correlation bivariate, and multiple regression tests were used to analyze the association between different factors. Results. Students with better health showed higher compliance to hand hygiene, but reported lower safe sex practices (p<0.05). Likewise, students with chronic disorders were more skeptical of vaccines (p<0.05). Students reporting healthy eating habits displayed a higher compliance to hand hygiene (p<0.05) and safe sex (p<0.05), while students who were more physically active showed lower confidence in vaccines (p<0.05). Conclusions. This study indicates that significant correlations exist between numerous variables related to socio-demographic and lifestyle factors with infection prevention behavior. Moreover, there is a need to increase the compliance of infection prevention behavior among youth. Hence, more health promotion programs should be implemented focusing on infection prevention behavior in young individuals.
    Źródło:
    Health Problems of Civilization; 2021, 15, 3; 187-195
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ cech drzewostanu i siedliska na występowanie borecznika sosnowca Diprion pini L. oraz borecznika zielonożółtego Gilpinia virens (Klug) (Hymenoptera, Diprionidae) na wybranych obszarach północnej Polski
    The influence of stand and habitat characteristics on the occurrence of pine sawflies Diprion pini L. and Gilpinia virens (Klug) (Hymenoptera, Diprionidae) in selected areas of northern Poland
    Autorzy:
    Gaweda, P.
    Grodzki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2142637.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    defoliating insects
    Pinus sylvestris
    outbreaks
    environmental requirements
    owady liściożerne
    gradacje
    wymagania środowiskowe
    Opis:
    Pine sawflies (Hymenoptera: Diprionidae) belong to the most common pests of Scots pine Pinus sylvestris L. in the area of the Regional Directorates of State Forests in Toruń and Gdańsk. The two most destructive species, Diprion pini L. in the area of Puszcza Bydgoska and Gilpinia virens (Klug) in Bory Tucholskie, were investigated in this study. Our main aim was to characterize the two species in the Bydgoszcz Forest District in RDSF in Toruń and Kaliska in RDSF in Gdańsk, respectively, based on data gathered during outbreaks between 1991 and 2011. For this purpose, a geometric database was created, containing information about the year of outbreak, number of larvae ob- served after tree felling as well as selected stand and site features including stand age and species composition, stocking index, canopy closure, site index, humidity and fertility. By analyzing the occurrence of both species in relation to stand and site features, we were able to determine their environ- mental requirements, which are quite different from one another. D. pini preferred older stands, with a stocking index between 0.8–0.9, growing on fresh and dry coniferous sites, while species composition (share of pine), canopy closure or site index did not have any influence on its abundance. G. virens preferred middle-aged pure pine stands, with relatively open canopies, on fresh coniferous sites and poorer soils. The stocking index did not affect its occurrence.
    Źródło:
    Leśne Prace Badawcze; 2020, 81, 3; 99-106
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Digital Adaptation Of Cities In The Era Of Modern Challenges
    Autorzy:
    Lutsiv, Ruslana
    Chukhnii, Oleh
    Powiązania:
    https://bibliotekanauki.pl/articles/1402401.pdf
    Data publikacji:
    2020
    Wydawca:
    Wyższa Szkoła Ekonomiczno-Humanistyczna w Bielsku-Białej
    Tematy:
    smart city
    pandemic-resistant cities
    IT
    COVID-19 outbreak
    monitoring and detecting outbreaks
    smart cities initiatives
    Opis:
    Urbanization today is one of the most important trends in planetary development. 2020 has marked the greatest period of uncertainty and economic volatility our generation has ever faced. The COVID-19 outbreak has made a significant difference to our way of life. While scientists estimate that by 2050, 68% of the world’s population will live in cities, there is a growing need to design pandemic-resistant cities. Smart cities are one of the essential needs for reducing this as well as other pandemics. This study reviews recent approaches and presents potential solutions that can be exploited by health-centric smart cities to relieve impacts of any pandemic.
    Źródło:
    MIND Journal; 2020, 10; 1-27
    2451-4454
    Pojawia się w:
    MIND Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microbiological safety of fruit and vegetables at the primary production stage®
    Bezpieczeństwo mikrobiologiczne warzyw i owoców na etapie produkcji pierwotnej®
    Autorzy:
    Polak-Śliwińska, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/2051444.pdf
    Data publikacji:
    2021
    Wydawca:
    Wyższa Szkoła Menedżerska w Warszawie
    Tematy:
    fresh vegetables and fruit
    microbial contamination
    produce outbreaks
    świeże warzywa i owoce
    zanieczyszczenie mikrobiologiczne
    ogniska chorób
    Opis:
    Consumers are increasingly interested in healthy lifestyles, leading to increased consumption of fresh produce. This may contribute to their exposure to an increased risk of foodborne illness. Before consumption, fresh produce does not undergo processing steps each time that ensure effective removal or inactivation of pathogenic microorganisms. This problem has resulted in a significant increase in reports of disease outbreaks associated with ready-to-eat fruits and vegetables in recent years. In addition, the nature and sources of microbial contamination of these products is critical to the development of appropriate countermeasures with the potential for implementation by food manufacturers. The objective of this review was to characterize the foods most susceptible to microbial contamination and the microorganisms responsible for outbreaks based on information available in scientific publications. Pathogenic strains of Escherichia coli and Salmonella and norovirus accounted for the majority of cases. There is a need for standardized data sets on all aspects of outbreaks. Providing knowledge to food entrepreneurs will allow them to implement better strategies to improve safety of fresh produce.
    Konsumenci są coraz bardziej zainteresowani zdrowym stylem życia, co prowadzi do zwiększonego spożycia świeżych produktów. Może to przyczynić się do narażenia na zwiększone ryzyko chorób przenoszonych drogą pokarmową. Przed spożyciem świeże produkty nie są za każdym razem poddawane etapom przetwarzania, zapewniającym skuteczne usunięcie lub inaktywację mikroorganizmów chorobotwórczych. Spowodowało to w ostatnich latach znaczny wzrost liczby zgłoszeń ognisk chorób związanych z owocami i warzywami gotowymi do spożycia. Charakter i źródła mikrobiologicznego zanieczyszczenia tych produktów są kluczowe dla opracowania odpowiednich środków zaradczych, które mogą być wdrożone przez producentów żywności. Celem tego przeglądu jest omówienie żywności najbardziej podatnej na zanieczyszczenia mikrobiologiczne oraz mikroorganizmów odpowiedzialnych za powstawanie ognisk chorób w oparciu o informacje dostępne w publikacjach naukowych. Większość przypadków stanowiły patogenne szczepy Escherichia coli i Salmonella oraz norowirusy. Istnieje potrzeba standaryzacji zestawów danych dotyczących wszystkich aspektów ognisk chorobowych. Dostarczenie wiedzy przedsiębiorcom branży spożywczej pozwoli na wdrożenie lepszych strategii w celu poprawy bezpieczeństwa świeżych produktów.
    Źródło:
    Postępy Techniki Przetwórstwa Spożywczego; 2021, 1; 175-185
    0867-793X
    2719-3691
    Pojawia się w:
    Postępy Techniki Przetwórstwa Spożywczego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Konsekwencje ekologiczne gradacyjnego występowania liściożernych owadów leśnych
    Ecological consequences of forest leaf-feeding insect outbreaks
    Autorzy:
    Malinowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015741.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    foliofagi
    owady
    szkodniki roslin
    skutki ekologiczne
    ochrona lasu
    lesnictwo
    gradacja
    drzewa lesne
    forest defoliating insects outbreaks
    non−target impact
    insecticides activity
    bacillus thuringiensis
    bioinsecticide activity
    Opis:
    The aim of his work was to evaluate the impact of defoliating insects outbreaks on other species of insects and on forest stands. The above is discussed from two points of view: 1) what is the impact of outbreaks when treatments with insecticides were not executed and 2) what is the impact of outbreaks when treatments with insecticides were executed.
    Źródło:
    Sylwan; 2007, 151, 08; 35-41
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ postępowania ochronnego na występowanie kornika drukarza Ips typographus (L.) w Dolinie Kościeliskiej w Tatrzańskim Parku Narodowym
    Effect of forest protection strategy on the occurrence of the spruce bark beetle Ips typographus (L.) in the Koscieliska Valley in the Tatra National Park
    Autorzy:
    Grodzki, W.
    Gąsienica Fronek, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/986615.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Tatrzanski Park Narodowy
    Dolina Koscieliska
    obszary ochrony scislej
    drzewostany swierkowe
    drzewostany uszkodzone
    wiatrolomy
    szkodniki roslin
    kornik drukarz
    Ips typographus
    wystepowanie
    bark beetles
    norway spruce
    wind damage
    outbreaks
    nature conservation
    Opis:
    In the end of 2013 the Norway spruce stands in the Kościelska Valley in the Tatra National Park (S Poland) were severely damaged by the wind. In the next year about 22,000 m3 of timber from broken and fallen trees was processed and removed from the active protection zone, whilst in the strict protection zone those trees were left. In 2014, when the presented survey started, the infestation of lying and surrounding standing trees was very low, but starting from 2015 an intensive bark beetle Ips typographus outbreak affected the survived stands. No−intervention strategy was implemented by the national park in both zones, regardless their formal status at that time as well. In 2015 a set of 10 observation plots (200 trees in total) was established in both active and passive (strict) protection zones (5 plots in each zone). In 2017 a new set of 12 plots (240 trees in total) was installed (6 plots in each zone). On each plot the breast height diameter of all trees was measured and the relative mortality of trees (share of attacked spruces) was recorded each year. The infestation density and sex ratio were defined on the 25×25 cm bark samples taken from 138 trees in 2 trunk sections located 1.5−2.0 above the ground and in the midway between tree and crown bases. The bark beetle attack on living spruces in 2015 differed between the active and strict protection zones. The relative tree mortality was lower in active than in passive protection zone (20 and 39% respectively), but later it gradually came to be similar in both parts of the area (73.3 and 77.5%, respectively in 2017). In the initial outbreak phase, thinner (weaker) trees were attacked, and in the following years – stronger ones, although in the active protection zone the opposite pattern occurred initially. The attack density decreased in subsequent years, being higher in active protection zone, with gradually decreasing difference between zones. Thicker trees were attacked with lower intensity. The share of females, higher in active protection zone (68.2 vs. 63.9%), gradually decreased to (57.9 vs. 51.2%). The initial decrease of bark beetle attack intensity in the active protection zone gradually disappeared after the no−intervention strategy was applied. The resulting extended bark beetle infestation and its increasing intensity in both parts of the area, demonstrate the appropriateness and effectiveness of active protection measures applied in 2014.
    Źródło:
    Sylwan; 2018, 162, 08; 628-637
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zmian temperatury i wilgotności na cykle rozwojowe i znaczenie owadów w ekosystemach leśnych w związku z prawdopodobnymi zmianami klimatycznymi
    The effect of temperature and humidity changes on insects development their impact on forest ecosystems in the context of expected climate change
    Autorzy:
    Jaworski, T.
    Hilszczański, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317794.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    zmiany klimatyczne
    zmiany temperatury
    zmiany wilgotnosci
    oddzialywanie na zwierzeta
    owady
    cykl rozwojowy
    dynamika populacji
    znaczenie ekologiczne
    ekosystemy lesne
    global warming
    forest insects
    population dynamics
    forest insects outbreaks
    range shift
    phenology
    forest management
    Opis:
    Ongoing climate change is mainly evident as increased in average temperature. It is expected to have a significant impact on world's biomes, with forest ecosystems especially vulnerable to these changes. The effect of climate change on forests is both indirect, through its impact on various tree species of different ecological requirements, and direct, through its impact on all living components of the forest ecosystem. Among the latter, insects are the group of the greatest importance, including species detrimental to forest health. The impact of climate change on forest insects may be reflected in their distribution, phenology, activity, number of generations and, indirectly, through impact on their natural enemies. Predicting the future direction and pace of the climate change, as well as direct and indirect consequences of its effect on forest insects is difficult and often subject to considerable inaccuracy. The paper presents a review of data from the published literature in this area of study. The influence of the basic climate parameters, temperature and humidity, on forest herbivore insects is discussed, particularly in the context of the most probable scenarios of climate change, i.e. the gradual increase in the average temperature. Observed and projected impacts of climate change in relation to the influence of herbivorous insects on forest ecosystems are characterized. We present some of the possible adaptation strategies of forest management to the expected climate changes.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 4; 345-355
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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