Access To Land Research Articles

Spatial proximity in ‘local’ Alternative Food Networks: a case study of AMAP in France

This paper explores the emerging paradigm of alternative food networks (AFN), with a focus on AMAP (Association pour le Maintien de l’Agriculture Paysanne) in France as a case study. Delving into the multifaceted concept of spatial proximity within such networks, this paper explores three hypotheses drawn from literature on the spatiality of AFN, analyzing both ‘local’ distances variability and the characteristics of agricultural and urban contexts where such local-based AFN take place. Methodologically, the study leverages an original, manually compiled database at a national scale encompassing AMAP producers and distribution points. Specific analytical protocols are developed combining traditional geographical approaches with machine learning techniques. Key findings reveal the influence of both population density and agricultural land availability on the distances between producers and selling locations. Moreover, the study discerns that the nature of products and their processing levels significantly shapes 'local' distances. Additionally, the paper offers insights into distinctive features of the morphological landscape associated with AMAP producers. These findings may serve as a catalyst for future inquiries into the spatial dynamics and potential spatial configurations of alternative food networks.

Assessment of the impact of ethnic minorities’ capacity in Binh Dinh province, Vietnam, to access land and exercise land use rights by application of linear structure model (PLS-SEM)

Abstract The study aimed to evaluate the impact of ethnic minority people’s capacity on land access and exercise of land use rights. The research model and hypotheses were tested using exploratory factor analysis (EFA) and PLS-SEM methods with 70 preliminary quantitative survey samples and 273 official quantitative survey samples of ethnic minorities. The research results revealed that strengthening the capacity of ethnic minorities is the key to improving their effectiveness in accessing land and exercising land use rights. The research findings demonstrate a robust and affirmative correlation between the capacity of ethnic minorities to acquire land access and the implementation of land use rights (βCO→LA = 0.325; βCO→LUR = 0.736; estimated path coefficients close to +1 represent strong positive relationships). The research model attains a significance level of 1% (tCO→LA = 8.412; tCO→LUR = 42.643). The outcomes of this research can serve as a foundation for the People’s Committee of Binh Dinh Province, Committee for Ethnic Minority, to further establish policies, support programs, and training to enhance the capacity of ethnic minorities, and to provide guidance on improving the effectiveness of land access and exercise of land use rights for this community.

Optimization framework of clean heat and CO2 supply for agricultural greenhouses exploiting industrial symbiosis

The rising demand for greenhouse cultivation poses a challenge in providing environmentally friendly energy to maintain favorable greenhouse indoor conditions. This research presents an optimization model to identify cost-optimal symbiotic pathways to replace the import of three key greenhouse crops (tomato, cucumber, lettuce) with local greenhouse production. The proposed solutions involve greenhouses that can meet these crops' heat and CO2 demands via industrial symbiosis. Switzerland is investigated as the case study, and the (waste) heat suppliers are municipal solid waste incinerators, cement production plants and biogas plants. Upgrading biomethane production plants are also considered potential CO2 suppliers. The objective is to minimize the discounted cost when replacing 25%–100 % of vegetable imports with local agricultural greenhouses, considering availability of suitable land as well as waste heat and CO2 suppliers. Optimization results suggest prioritizing northeast and west Switzerland for greenhouse development, due to the availability of suitable land and proximity of waste heat and CO2 suppliers. Waste incinerators could provide 50%–70 % of the necessary heat, while Organic Rankine cycle in cement plants could generate 63 % of the electricity of supplementary lighting demand of greenhouses. While tailored for Switzerland, the optimization framework's general formulation can be adapted also to other regions to optimize greenhouses' heat and CO2 demands. The optimization code is provided open source for associated applications.

Deciphering Farm Pond Adoption Dynamics and Operational Efficiency in Drought-Prone Regions of Maharashtra, India

The study delves the dynamics of farm pond adoption and operational efficiency in the Vidarbha and Marathwada regions of Maharashtra during 2022-23. Through a combination of quantitative and qualitative methods, data were collected from 160 beneficiaries and 160 non-beneficiaries, employing focus group discussions and structured interviews. Agricultural risks were examined, revealing a significant impact on farm income. Challenges such as low ground water table (MS 0.978), high temperatures (MS 0.966), and least evapotranspiration (MS 0.759) affected farmers' livelihoods, underscoring the need for a multidisciplinary approach to address these issues. The study highlights factors influencing farm pond adoption, with high awareness (96.56%) contrasting with lower adoption rates (51.56%). Adopters cited increased water access (22.81%), and relief from water scarcity (20%) as motives. Non-adopters faced barriers like financial constraints (21.88%) and land shortage (18.75%). Farm pond characteristics were comprehensively explored, revealing variations in size, structure, year of adoption, and irrigation sources. Maintenance activities were examined, showcasing key areas for pond health. Regular inspection (31.88%), vegetation management (17.50%), sediment removal (25.63%), and erosion prevention (19.38 %) emerged as crucial tasks, with variations between the regions. Financial aspects of pond construction and maintenance were elucidated, indicating a need of subsidies. Despite widespread awareness of farm pond benefits, adoption rates remained constrained by financial limitations, land availability, and awareness gaps. The study underscores the importance of targeted interventions, including financial aid, technical guidance, and capacity-building. These efforts are essential for promoting widespread adoption, enhancing agricultural productivity, water management, and the resilience of farming communities in both regions.

Erosion of Rivers and their Impact on Land Ownership of Vernacular Settlements: Insights from Two Settlements Near the Tigris and Euphrates Rivers in Iraq

It is usual for human settlements to rise along the river banks because rivers provide water: the major source of sustenance of communities. However, riverbank erosion along rivers has huge implication for these settlements that border them. The Tigris and Euphrates rivers in Iraq causes land loss that impacts adjacent properties and land ownership rights. This study examines such erosion and land submersion in two locations in Iraq: along the Euphrates in Ramadi and the Tigris in Baiji. The research employs historical maps and multi-temporal satellite data from 1968-2022. The GIS analysis quantified erosion areas and compared changes to cadastral records to determine direct impacts to property boundaries and land rights. The results identified significant conversion of privately held waterfront land into nonusable flooded river channels, amounting to billions in loss of value. Owners forfeited all functional land access without current provisions for relocations or erosion mitigation planning. The research concludes that intensifying hydrologic shifts could exponentially increase economic disruption for vulnerable property holders without integrated monitoring tools and policy responses to the dynamic river morphologies.

How is urban agriculture practiced, institutionalized, implemented, and sustained? A literature review

Urban agriculture (UA) has emerged as a crucial strategy for ensuring sustainable food access in both developing and developed nations. However, the interplay between planning regulations and land availability significantly influences farmed land's scope and location, directly impacting UA activities' scale and intensity. The spatial mechanisms governing land use for UA stem from planning regulations, which may or may not align with food policies shaped by municipal actors—whose objectives often differ from those of civil actors. This review analyzes current urban agriculture practices in cities to explore how UA is practiced, institutionalized, implemented, and sustained, considering the influence of governance mechanisms and focusing on land-based forms of UA. By reviewing 51 peer-reviewed articles, consistent challenges impeding UA across various contexts were identified. Key factors include discord between civil and municipal actors, contextual elements affecting the enactment of supportive UA policies, and urban densification encroaching upon UA land. While these issues vary between developed and developing cities, they are primary drivers of informal or constrained UA practices and tenure insecurity. The review concludes that policies aimed at regulating UA to enhance food security should prioritize scaling up farming practices by ensuring access to larger plots with more secure tenure durations. Additionally, it emphasizes the need for flexible land-use and zoning ordinances that accommodate dual land uses, the establishment of UA protection zones to counter urban densification, and the active participation of civil actors in the process.

The Early Socio-ecological Dimensions of Tricontinental (1967–1971): A Sovereign Social Metabolism for the Third World

This article delves into the socio-ecological dimensions of OSPAAAL, the Cuban Third World solidarity institution, focusing particularly on the early years of its official organ: the magazine Tricontinental (1967–1971). Tricontinental’s articles and graphic works, even if not always in an explicit manner, addressed environmental concerns in a revolutionary way, anticipating debates that would later unfold on international institutional platforms. These concerns were primarily discussed in the context of the Third World’s quest for autonomous production, closely intertwined with the agrarian question and sovereign industrialization. Key aspects such as land access, distribution, and resource management were pivotal. The publication’s central emphasis on struggles for national liberation, especially within the guerrilla arena, played a crucial role in disseminating the anti-imperialist pursuit of a sovereign social metabolism across the Third World. Combining Cuban, Latin Americanist, and internationalist accents, Tricontinental also condemned the ecological impact of transnational corporations’ predatory resource extraction in the Third World, while exploring alternative and cooperative models. This article unveils the latent socio-environmental dimensions of its critique, illustrating how ecological concerns subtly underpinned its anti-imperialist and internationalist discourse.

Understanding residents’ choice of urban farming systems in the Kumasi metropolis of Ghana: Land use policy implications

The heightened food insecurity in urban settings has rekindled the debate over the promotion of urban agriculture (UA) as a sustainable alternative food supply source across the globe. This study, therefore, examines the determinants of urban residents’ decisions to engage in UA and their choice of agriculture practices. Cross-sectional data was solicited from 430 urban dwellers through a multi-stage sampling technique. The data was analysed using descriptive as well as binary and multinomial logit regression models. The descriptive analysis shows that the cultivation of crops (34.7 %) predominates urban agricultural practices before crop-livestock integration (32.6 %) and livestock farming (32.6 %). The study identifies gender, age, religious affiliation, years of formal education, location of residence, household size, food insecurity status, availability of vacant land, extension access, and household income as significant determinants of urban households’ decision to participate in UA. The multinomial logit regression analysis revealed that urban farmers’ decision to practice only crop production is invariant between livestock-only production and integrated crop-livestock systems. When compared to the base category of the integrated crop-livestock system, the findings indicate that farmers’ educational background, food insecurity, engagement in salaried jobs, location, extension, and credit access are the main drivers of the decision to practice either crop-only or sole livestock production systems. The findings of this study have useful implications for the formulation of UA programs based on the different farming systems practiced in the study location.

Determinants of sustainable customary land secretariats in Ghana: An economic modelling approach

Land reforms in sub-Saharan Africa are transiting customary land tenure into a neo-customary land tenure regime. Accordingly, the Government of Ghana, together with its development partners, initiated the establishment of customary land secretariats (CLSs) to enhance the governance of customary land administration at the local level. Though this initiative is implemented with advances, events on the ground suggest a growing trend of inactive or dysfunctional CLSs. Synergizing an autoregressive distributed lag (ARDL) model and descriptive statistics, we used monthly secondary data from the Berekum CLS to investigate the determinants of sustainable CLSs in Ghana. The analysis revealed that the most critical factors enhancing the sustainable performances of CLSs in the long and short term are the cost of documentation, the timely preparation and delivery of documents, and gender-related matters. Moreover, there was strong evidence of a long-run relationship between the studied variables. Despite the strives for equal land access, women are still less privileged in the acquisition of land. The study portends that should authorities aimed at bringing CLSs closer to the corridors of sustainability, the mandate of the Office of the Administrator of Stool Lands (OASL) and the Lands Commission (LC) should not just be the establishment of the CLSs but also ensuring their sustainability. A prioritization of the study’s findings by the OASL and the LC can enhance the patronage of CLSs in their established communities.

How fiscally autonomous are local governments? An empirical test

How freely can local jurisdictions change their taxes and spending? I propose an empirical test of the effective degree of municipal fiscal autonomy by studying fiscal adjustments to a permanent exogenous revenue shift. Based on a tax competition model where jurisdictions are partially expenditure constrained, I derive a testable prediction: tax cuts from a small positive revenue shock will be larger (smaller) with higher perceived tax base mobility, if the local policymaker is strongly (weakly) fiscally constrained. I apply this test using a revenue shock generated by a reform in an inter-municipal transfer system within a Swiss canton. tax base mobility is proxied by the availability of zoned land reserves. I find that higher residential land availability is associated with stronger tax rate responses, but I find no statistically significant results for industrial land reserves. In light of the theory, this suggests that the effective degree of fiscal autonomy of local jurisdictions is low. Usual indicators of fiscal decentralization based on public accounts might overestimate the actual autonomy of local governments.

Analysis of the Effect of Utilization of Science and Technology, Human Resources and Asset Land Management on Sustainable Optimization

Natural resources, especially land, are finite resources that constrain development. The limited availability of land in urban areas is disproportionate to the growing demand. This land is important for developing city infrastructure, such as office buildings, housing, education, health services, parks, and green open spaces, as well as other functions that support city infrastructure. The research was conducted as an effort to support government programs towards the optimization of sustainable cities by looking at the propositions of each variable. The product of this research helps the government optimize the development of sustainable cities. Testing with quantitative methods using partial least square data analysis utilizing Smart-PLS software. The results showed that the science and technology variable had an insignificant effect on the sustainable optimization of land assets in Malang City. However, the human resources variable and the asset land variable have a significant positive effect on the sustainable optimization of asset land in Malang City. The conclusion of this study shows that science and technology does not have a direct impact on the optimization of sustainable land assets in Malang City, but has a significant positive influence through the mediation of human resources. Therefore, researchers recommend improving science and technology in land asset management through improving the education and skills of human resources in the Malang City government.

Land Rental Transactions in Ethiopian Peri-Urban Areas: Sex and Other Factors for Land Rent Transactions

The continuous reduction in peri-urban agricultural land due to spatial urban expansion forces subsistence farmers to seek arable land through different land access strategies. Among these, land rental transactions are crucial for accessing arable land across different regions. This study aimed to examine factors affecting land rental transactions in the peri-urban areas of the East Gojjam Administrative Zone in Ethiopia. Data were collected from 353 household heads of peri-urban areas, who were affected by expropriation. A total of 350 valid responses were analyzed using descriptive and inferential statistics and an econometrics model. The results indicated that 58% of the respondents participated in both renting and renting out land, which underlines the importance of land rental transactions in the peri-urban areas. Specifically, 60% of female-headed households were engaged in land rental transactions, with 14% renting in and 46% renting out land. In contrast, 38% of the male-headed respondents rented land, while only 19% rented out land. The model result identified sex, landholding size, number of oxen, participation in off-farm activities, and extension service as significant determinant variables for renting land. Households made land rental agreements both orally and in written documents, with oral agreements being more prevalent. Transaction dues were conducted through sharecropping and fixed rents, with sharecropping being the most common method. Thus, land rental transactions play pivotal roles to support the livelihoods of peri-urban subsistence farmers.

An Evaluation of the Land Available for Sustainable Sugarcane Cultivation and Potential for Producing Ethanol and Bioelectricity in Angola

With a predominantly humid tropical climate and a large area for expanding agricultural activities, Angola has in principle favorable conditions for bioenergy production. The focus of this study was to evaluate the availability of suitable land for producing sugarcane. This crop is highly efficient in converting solar energy into biomass for energy purposes in Angola. To this end, this paper outlines a method for data collection, processing, and analysis divided into three sections. The first section uses the GAEZ (Global Agroecological Zones) database and QGIS (Quantum GIS) software (version 3.22.5) to assess land availability for sugarcane cultivation in Angola, classifying the regions’ suitability into four levels. The second section supplements this with data from the FAOSTAT database, systematically excluding areas with restrictions, such as protected zones, land already used for other crops, and regions unsuitable for sugarcane. Finally, the third section employs an agricultural yield model to estimate the potential yield of sugarcane based on climatic parameters and the amount of bioenergy (ethanol and bioelectricity) able to be produced in the available land. Under these criteria, this study identified the existence of 6.3 Mha in lands of good agricultural suitability, with water resources, corresponding to 5% of the Angolan territory, distributed in seven provinces of the country, especially in the provinces of Cuando Cubango and Cunene, where 85% of the very suitable land under irrigation is located. Adopting a model of agricultural productivity, assuming irrigation and adequate agricultural practices, such area could produce approximately 956 million tons of sugarcane annually, which is significantly higher than the current production in this country. This amount of feedstock processed using current technology could potentially produce 81.3 GL of ethanol and 176.9 TWh of electricity with low GHG emissions per year, which is able to mitigate, as a whole, circa 60.3 MtCO2-eq/year by displacing gasoline in light vehicles and diesel and natural gas consumed in power generation.

Customary Land Tenure and Landless Farmers in Java, Indonesia: The Challenges and Prospects for Sustainable Development

Objectives: This study aimed to analyze the tenurial system of customary land in Java, its deficiency, the accompanying consequences on land access, and the identification of modes of improvement in order to accelerate rural development. Theoretical framework: This study was based on theories of rural development and decentralization, with a specific focus on landless farmers. Method: This study employed qualitative method to analyze the tenurial system of customary land in Java. Data were collected through two steps, first, observations, interviews, and documentaries were conducted to understand the realities of customary land tenure from the descriptive statistics and narratives of local officers. Second, a focus group discussion involving local officers and villagers was held to present the initial findings, formulate a new tenancy system, and analyze the possibilities of its application in village administration. Results and conclusion: Based on the villages in the Grobogan District of Central Java Province, this study showed that land use causes unequal access to landless farmers. The land management methods to finance village development programs are currently irrelevant in the framework of recent decentralization. A system that can benefit landless farmers is contract farming. Implications of research: This study provided evidence-based information for policymakers to improve the use of customary land for landless farmers and an additional reference for rural development in the world. Originality/value: Studies on Indonesian rural development have shown the strategic position of customary lands in Indonesia, especially in Java. However, little is known about the potential of customary lands to achieve sustainable rural development, as this issue is still inadequately addressed in the literature. This led to the implementation of this study, with the objectives of analyzing the tenurial system of customary land in Java, its deficiency, and accompanying consequences on land access, alongside identifying improvement approaches in order to accelerate rural development.

Initiation of Cassava Callus Culture and Its Prospect for Starch Production: A Systematic Mapping Study

Mass propagation of cassava on several hectares of arable land due to increasing demand for its starch is not feasible due to land availability, pests and disease invasion, and long cultivation period. Plant cell culture technology is a promising solution despite the scarcity of cassava callus culture for starch production applications. Therefore, a systematic mapping study (SMS) was performed to identify the applications of cassava tissue culture and its prospects in starch production and investigate the important parameters for cassava callus culture initiation. The SMS began with formulating research questions (RQs), conducting searches on various databases, collecting and screening related articles, and extracting and mapping the selected articles. A total of 56 of 589 articles in the initial searching phase were chosen to be used as references to answer each RQ. The extracted data indicates that cassava tissue culture was mostly used for micropropagation, while starch production from its tissue culture is still limited. Basal medium and plant growth regulators influence cassava callus culture initiation most. The findings of the SMS offer a better understanding of cassava tissue culture and the prospects of producing cassava starch.

The Changsha historic urban area: a study on the evolution characteristics and influencing factors of the connectivity of construction land

This study aims to understand the connectivity characteristics of construction land during the spatial evolution of historic urban areas. The complex network analysis method is employed to examine the evolution of the spatial structure of construction land in the four periods of the Changsha historic urban area. The results indicate that the spatial network morphology of construction land follows a repeated development pattern resembling a cluster–mother–child relationship. Additionally, the vulnerability in the evolution of land use spatial relationships is very low, while the overall stability of the land use network structure decreases. The spatial equilibrium of land use shows a downwards trend, the accessibility of land where existing cultural relics and historic sites are located is generally moderate to low, and some plots require improvement. In the evolution of connectivity in the construction land of historic urban areas, the main development challenges are the uneven growth caused by imbalanced land value influenced by capital and the need to balance the preservation of land use patterns with improved accessibility to cultural relics and historic sites. Therefore, it is highly important to dynamically detect and optimize the network structure of construction land to protect and develop historic urban areas.

Urban Agriculture’s ‘Invisible’ Short Food Value Chain: How Small-scale Farming Contributes to Johannesburg Food Security

AbstractUrbanisation into poverty in cities of the global South gives impetus to urban agriculture (UA) as a strategy to improve food security for low-income residents. This study disputes that UA is a trivial sector by arguing through the invisible short food value chain lens that it contributes to food security in local communities. The study adopted the extended case method that immersed researchers for more than a year to understand the practices of 11 farming entities and 20 of their customers in Johannesburg. Open-ended interview guides were administered to key informants from the city, provincial government, and non-governmental organisations. Findings show that UA increases food availability in local communities through the short food value chain. However, the local economy is undocumented and invisible to city stakeholders, negatively affecting their land use planning decisions for the sector. Though stakeholder consensus on UA is still lacking, the City of Johannesburg recognised UA’s potential and allocated both temporary and permanent land access arrangements for farming. Small-scale farmers lack the capacity to supply formal institutions, which can be overcome by intermediaries, such as civil society facilitation. The limitations of UA manifest in its inability to attract labour and keep records which inhibits its potential and support at the city level.

Exploring the Factors that Facilitate Gender Disparity in Access to Fertile Farmlands in Nadowli-Kaleo District

The paper explores the factors contributing to gender disparity in access to fertile farmlands in the Nadowli-Kaleo district. It highlights the significant imbalance in land ownership between men and women, influenced by cultural norms, inheritance practices, and patriarchal systems. The study emphasizes the need for interventions to promote gender equity in land ownership and empower women economically. The research employed a case study design to investigate the specific phenomenon of gender disparities in land access in the Nadowli-Kaleo district. This approach allowed for an in-depth exploration of sociocultural, economic, and environmental factors contributing to the gender gap in land ownership. Purposive selection was used to choose 198 participants for the study. The study focused on individuals residing in the Nadowli-Kaleo district, particularly those involved in agriculture and land ownership. The participants ranged from 24 to 65 years old, providing diverse perspectives on the issue of gender disparities in access to farmland. Face-to-face interviews with the assistance of interview guides were utilized to collect data from the participants. The data collected were transcribed, organized, and presented with relevant quotations to support the findings. The study revealed a significant gender disparity in land ownership, with men predominantly owning larger tracts of farmland compared to women who typically owned 1-3 acres or none at all. Factors such as gender, kinship, marital status, and cultural customs were identified as influencing access to land in the district. Based on the findings, recommendations were made.

Comparing feed-in tariff and renewable portfolio standard in South Korea: Cost reduction impact on non-photovoltaic renewable electricity

Renewable energy (RE) electricity plays a crucial role in addressing climate change but has limitations, such as intermittent production, high costs, and site constraints. South Korea transitioned its RE support system from a feed-in tariff (FIT) to a renewable portfolio standard (RPS) in 2012. This study evaluates the impact of the FIT-to-RPS transition on cost reduction for non-photovoltaic RE technologies (RETs), i.e., onshore wind power, bioenergy power, small hydropower, and fuel cell power, using a learning curve model. The results indicate that the FIT-to-RPS transition did not have a significant positive impact on cost reduction for onshore wind power, bioenergy power, or small hydropower, as the results show negative learning rates (LRs) during both FIT and RPS periods. The analysis suggests that the positive learning effect was hindered by the gradual depletion of sites favourable to RE power plants as more RE power plants were installed. However, fuel cell power, which is not affected by land availability, increased the LR from 1.4 % to 3.5 %.This study has policy implications, such as improving excessive regulations and procedures that hinder the installation of RE power plants on sites with good condition.

Polyculture of pikeperch (Sander lucioperca) and Russian sturgeon (Acipenser gueldenstaedtii) using an artificial common pellet – Implications on feed to fish nutrient transfers in recirculating aquaculture system (RAS)

The purpose of this research was to investigate the effects of monoculture and polyculture on the utilization of an artificial common pellet to produce nutritious products, specifically pikeperch and Russian sturgeon, in a recirculating aquaculture system (RAS) for 84 days. The experiment was conducted under controlled conditions, with specific parameters for: water temperature (21.8±0.4 °C), initial weight of the fish (pikeperch: 18.17±2.65 g; sturgeon: 18.23±3.62 g), volume of the containers (working volume of 272 litres) and feeding rate (1.5 %). Five experimental groups were tested in triplicates, including monoculture groups (pikeperch: 63.46±18.49 g; sturgeon: 93.52±50.40 g) and three polyculture combinations [P90: 90 % pikeperch (68.63±13.79 g) + 10 % sturgeon (86.10±33.38 g); P80: 80 % pikeperch (76.88±18.06 g) + 20 % sturgeon (103.53±44.60 g); P70: 70 % pikeperch (81.51±19.24 g) + 30 % Russian sturgeon (94.48±33.25 g)]. The results indicated that the addition of Russian sturgeon to pikeperch tanks could lead to efficient transfer of feed lipid to fish biomass through sturgeons, but not pikeperch. Polycultures showed better lipid absorption (P70 lipid-ADC 96.06±1.96 %) from the common pellet than monocultures (pikeperch: lipid-ADC 91.93±6.37 %; sturgeon: lipid-ADC 97.08±2.07 %). Fillet lipid content of pikeperch remained unaltered across RAS monocultures and polycultures but changed positively in Russian sturgeon in polyculture (P70 2.64±0.71 % > P0 1.75±0.75 %). In both species, polyculture fillets accumulated 5–7 % higher MUFA (oleic acid, C18:1n-9) than monoculture fillets. The major conclusions drawn from this research are that polyculture group P90 had both fish species flesh with highest muscle reserves of glycine and proline. In polyculture, critically indispensable muscle lysine reserves depleted in pikeperch, but Russian sturgeon muscle amino acid profile was stable. Given the global constraints on land availability, the study proposes RAS polyculture as a potentially productive and nutritious aquaculture system of the future. The research also suggests that resilient species for RAS polyculture need to be identified, proposing Russian sturgeon as a possible candidate.