Ecological Reproduction Research Articles

Сетевые платформы впечатлений в экологических вопросах и организации региональной рыбохозяйственной деятельности

The article generalizes the parameters of the dynamics and the relationship of expenditures under financing from the federal budget for the conservation of aquatic biological resources and the production of commercial aquaculture products. The expenses on conservation of the aquatic bioresources and development of aquaculture under Protection and Control subprogram for the past years and appointments until 2024 are considered. Feedback on services and impressions of the products of the enterprises of the Fisheries Complex are studied on the Internet resources. The complex of various organizational and methodological works of improving the environmental safety and developing the environmental standards of fisheries management is considered. There are shown the results of responses in the Yandex search system to the requests on protection of fish stocks and ecological reproduction of aquatic biological resources. The experience of the research and analytical network products in the field of fisheries management is considered. It is emphasized that by summarizing the information of online representative offices, websites and forums it is possible to attract potential customers and consumers of seafood. The Yandex search system has analyzed the requests on organizing the trade of fish products with responses and results of functioning the relevant sites per month. A case of generalizing the staff reviews in social networks about working conditions at fishery enterprises is demonstrated. The conclusion about the growing expenses of business structures on ecological reproduction is substantiated. It is stated that in the conditions of digital economy the opinions and feedback as important factors of economic development are acquiring a new meaning in the activities of the fisheries complex. The importance of taking into account the feedback and opinions on network platforms to improve the activities of business structures in the fish industry is emphasized.

Spreading–Vanishing Scenarios in a Time-Periodic Parasitic–Mutualistic Model of Mistletoes and Birds in Heterogeneous Environment with Free Boundary

In this paper, we investigate the asymptotic dynamics of a time-periodic parasitic–mutualistic model of mistletoes and birds in heterogeneous environment with the especial concerns over the spreading–vanishing scenarios, in which the Stefan class free boundary is introduced as the spreading frontier. By defining the ecological reproduction number and generalizing it as the spatial-temporal risk index, a considerably universal spreading–vanishing dichotomy and the sharp criteria are first established in birds world in the absence of mistletoes, and some estimates of the asymptotic spreading speed of the free boundary provided that spreading occurs are also obtained. Furthermore, the comprehensive considerations containing the spreading frontiers, asymptotic profiles and estimates of the asymptotic spreading speed are exhibited in mistletoes-birds world by the monotone iteration technique with the proper upper and lower solutions. The results suggest that even for the spreading case, the mistletoes population will eventually persist in long term provided that its own risk index is larger than 1, otherwise it may be eradicated.

The materiality of precarity: Gender, race and energy infrastructure in urban South Africa

Analysis of precarity has offered a critique of labour market experiences and politically induced conditions of work, housing, migration, or essential services. This paper develops an infrastructural politics of precarity by analysing energy as a critical sphere of social and ecological reproduction. We employ precarity to understand how gendered and racialised vulnerability to energy deprivation is induced through political processes. In turn, analysis of energy illustrates socio-material processes of precarity, produced and contested through infrastructure. Our argument is developed through scalar analysis of energy precarity in urban South Africa, a country that complicates a North-South framing of debates on both precarity and energy. We demonstrate how energy precarity can be reproduced or destabilised through: social and material relations of housing, tenure, labour and infrastructure; the formation of gendered and racialized energy subjects; and resistance and everyday practices. We conclude that analysis of infrastructure provides insights on how precarity is contested as a shared condition and on the prospect of systemic change through struggles over distribution and production.