Tuberculosis Pathology of Fraxinus Excelsior L. in Ukraine: Symptomatology, Etiology, Pathogenesis

Given the forestry, the ecological and economic value of forests with the participation of Fraxinus excelsior and taking into account the intensive deterioration of their phytosanitary status in modern conditions, a comprehensive study of symptoms, causes, and pathogenesis of ash tuberculosis with further development of effective protection measures, including using biological products based on Bacillus sp. and other myco- and microorganisms, is a particularly relevant area of research. The aim of the research is to identify negative abiotic and biotic factors in the pathology of F. excelsior. In the process of research general scientific and special research methods were used (microbiological, mycological, phytopathological, entomological, and silvicultural-ecological methods). It is emphasized that the pathology of the common ash is a multifaceted phenomenon with interrelated processes of infectious and non-infectious nature, which in recent years has led to epiphytic dieback and now has a tendency to increase. It has been established that tuberculosis of F. excelsior is the most common and harmful disease within the study region and causes more economic than environmental damage. Bacteria of the genera Pseudomonas sp., Erwinia sp., and Xanthomonas sp., as well as micromycetes, which mainly take the place of the concomitant mycobiota. There are five stages (phases) of the development of tuberculosis pathology, which differ significantly in symptoms. The species composition of harmful insects has been identified. It is shown that hydrothermal stress is a catalyst for the epiphytic dieback of common ash. Direct dependence of the spread of tuberculosis on the share of ash in the stands of different age groups was revealed. In the study area, tuberculosis reaches epiphytotics on F. excelsior, especially at a young age. The expediency of distinguishing the causes and pathological processes associated with ash tuberculosis is indicated, so as not to confuse the disease-catalyzing factors and the factors that lead to the complete degradation of ash stands

Species Distribution Pattern and Their Contribution in Plant Community Assembly in Response to Ecological Gradients of the Ecotonal Zone in the Himalayan Region

The ecotonal zones support populations that are acclimated to changing, fluctuating, and unstable conditions, and as a result, these populations are better equipped to adjust to expected change. In this context, a hypothesis was tested that there must be vegetation dominated by unique indicator plant species under the influence of ecological gradients in the ecotonal zone of Manoor Valley (northwestern Himalaya), Pakistan. Keeping the aforementioned hypothesis in mind, detailed field studies were conducted during different seasons in 2015-18. Line transect sampling and phytosociological characteristics (density, frequency, cover, and their relative values and Importance Value) were implemented as ecological methods. This investigation documented 97 plant species recorded from seven sampling sites. The community distribution modelling revealed that the ecological variables separate the seven sampling sites into two major plant communities (Indigofera-Parrotiopsis-Bistorta and Ziziphus-Leptopus-Quercus) recognized by TWINSPAN. The IBP communities showed a positive and significant correlation with altitude (1789.6–1896.3 m), sandy soil texture with a slightly acidic pH (6.4–6.5), and higher phosphorous (9–13 mg kg−1). In contrast with this, the ZLQ community was recognized on the southern slope under the strong influence of high electrical conductivity (2.82–5.4 dsm−1), organic matter (1.08–1.25%), calcium carbonate (5.8–7.6 mg kg−1), potassium (202–220 mg kg−1), and temperature (28.8–31.8 °C). Hence, both communities were found on opposite axes with clear differences based on the ecological gradients. NMDS clustered different species with similar habitats and different stands with common species, showing that plant species and stands were in a linear combination with ecological gradients. The IPB community has the maximum number of plant species (87 species), Shannon value (H’ = 4), Simpson value (0.98), and Pielou’s evenness value (0.96). Thus, the multivariate approaches revealed unique vegetation with sharp boundaries between communities which might be due to abrupt environmental changes.

Ecological methods of protecting bearded irises in the urban environment

The article presents data from a long-term phytopathological survey of a collection of varieties Iris x hybrida Hort. Main Botanical Garden named after N.V. Tsitsin RAS (Moscow). Data on diseases of bearded irises in the urban environment were obtained, changes in the composition of the fungal complex in the rhizo- and phyllosphere were studied. Low soil fertility during the adaptation period of bearded irises worsens the formation and development of the root system of plants, increases the likelihood of increased disease damage and premature leaf fall. The experience of successful establishment of cultivators Iris x hybrida with the use of complex preventive and health-improving measures to improve fertility and reduce stress factors has been obtained. It was found that the introduction of NPK-complex, etching with a biofungicide based on phytobacteriomycin, and spraying vegetative plants with a microbiological preparation based on saprophytic antagonist fungi and bacteria within two years from the moment of transplanting varieties of garden bearded irises have a positive effect on their survival rate and decorative effect. The use of biological fungicides in combination with a complex of fertilizers is mandatory in a pesticide-free protection system for garden iris varieties sensitive to mycoses.

Contemporary Resistance Status of Anopheles Stephensi against Insecticides in District Dungarpur, Rajasthan, India

Pyrethroids are powerful insecticides used in the vector control program with impregnated mesh, and residual indoor sprays. However, resistance to insecticide reduces the effectiveness. The present susceptibility study carried out against theAnopheles Stephensi to monitor the sensitivity conditions of An. Stephensi vector, which raises the need to understand the state of vector resistance in the Dungarpur region of Rajasthan, India in order to better report vector-based interventions. The sensitivity study was carried out by the WHO standard method using recommended diagnostic doses of DDT, alpha-cypermethrin, permethrin, and deltamethrin. An. Stephensi showed resistance to DDT from the entire study while sensitive to alpha-cypermethrin, permethrin, and deltamethrin. The study looks at the selection and circulation of the appropriate insecticide’s molecule for a vector control program as insecticide need constant monitoring to develop effective vector control strategies such as improving insecticide by applying integrated biological and ecological methods.

Synthetic and Biological Surfactants Used to Mitigate Biofouling on Industrial Facilities Surfaces

The adhesion of organisms to surfaces is an event that occurs in natural and artificial systems and is commonly known as bio-encrustation. The elimination of biofouling through less aggressive and ecological methods has aroused the interest of researchers and industries worldwide. Among the products with the greatest potential for altering surfaces, surfactants act at cell-cell and cell-surface interfaces, reducing surface hydrophobicity, the adherence of microorganisms, and the formation of biofilms. Biological surfactants have stood out for their versatility and proven effectiveness in recent years as valuable tools, especially due to their biodegradable characteristics when compared to synthetic surfactants. Thus, they can transform and modernize biotechnology by providing more robust antifouling technologies. This review discusses the possible roles and applications of synthetic and biological surfactants from different sources, such as biofouling reducing agents, addressing the potential alteration of surfaces, reducing surface tension, biological activities (antimicrobial, antibiofilm, and anti-adherence), biodegradability, and anticorrosion activity. Market trends and the potential uses of these multifunctional biomolecules in biofouling control are also cited, along with examples from the literature using biosurfactants as antifouling agents.

Fish health protection in fish farming using ecological methods

The epizootic state of fish farms and the applied anti-epizootic measures, supplemented by environmental techniques that increase the protection of fish health and the efficiency of fish farming, are presented.

Southwood's Ecological Methods

Ecological Methods, by the late T. R. E. Southwood and revised over the years by P. A. Henderson, has developed into a classic reference work for the field biologist. It provides a handbook of ecological methods and analytical techniques pertinent to the study of animals, with an emphasis on non-microscopic animals in both terrestrial and aquatic environments. It remains unique in the breadth of the methods presented and in the depth of the literature cited, stretching right back to the earliest days of ecological research. The universal availability of R as an open-source package has radically changed the way ecologists analyze their data. In response, Southwood’s classic text has been thoroughly revised to be more relevant and useful to a new generation of ecologists, making the vast resource of R packages more readily available to the wider ecological community. By focusing on the use of R for data analysis, supported by worked examples, the book is now more accessible than previous editions to students requiring support and ideas for their projects.

Prioritization of Loita Maasai medicinal plants for conservation

Medicinal plants provide biodiversity-based ecosystem services including health to many communities around the world and therefore, medicinal plant conservation is vital for sustainability. Here, we identify medicinal plants to be prioritized for conservation among the Loita Maasai who are pastoralists in the extensive East African savannah. A botanical survey and interviews were conducted with 91 villagers; 49 women and 42 men drawn randomly from 45 households. A conservation priority list was developed based on (1) the plant part harvested, (2) the species use value, and (3) its availability. These criteria were evaluated independently for each species on a scale from 1 to 4 and their sum was taken as the species’ score. The score for the species varied from 5 to 9. The higher the total score value of a species, the higher its priority for conservation. Among the medicinal plants used by the community, 20 species were shortlisted as regularly used and found around the village. Out of these, 12 species that had scores above seven were considered top priority for conservation. A total of 1179 use reports were obtained from the villagers and they were placed in 12 use categories as defined in the International Classification of Primary Care system. Plants used to treat digestive system disorder had most use reports (21%), followed by the muscular skeletal disorders (20%). This study identified 12 medicinal plant species that should be given conservation priority to make them available for the wellbeing of the people and sustainability of ecosystem products and services. An assessment of medicinal plants species using standard ecological methods is recommended.

Chrysanthemum Production in Bangladesh: Significance the Insect Pests and Diseases Management: A Review

Chrysanthemum is a floricultural, ornamental and medicinal plant with tremendous income cash crop which is cultivated chiefly in winter. The crop charity as nerve sedative, anti-oxidant, anti-inflammatory, anti-mutagenic, anti-microbial, anti-fungal, anti-angiogenic, anti-atherosclerosis and nematocidal goods. Chrysanthemum has been used for hundreds of years in manufacturing medicine. It is used to treat respiratory complications, high blood pressure, and hyperthyroidism and reduce inflammation. Leaves remedies for colds, headaches, bronchitis, rheumatism, and swellings. The plant has aesthetic significance as well. Nevertheless, outbreaks of pests and diseases have hold back Chrysanthemum cultivation in Bangladesh. Insect pest damages the plant directly by sucking cell sap and indirectly spread out of virus diseases as act of vector. Aphid resistance variety might be the effective tool for successful production of chrysanthemum plant. Sustainable crop disease management for Chrysanthemum needs a multitude of consideration of the impacts of management methods on economics, sociology and ecology by wholly understanding the mechanisms of crop disease epidemics and the functioning of normal agroecosystems. The findings of this study present clear insights into efforts that will encourage farmers to adopt effective and ecological methods of pest and disease management for successful chrysanthemum production in Bangladesh.