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Topic Review
Microbial Diversity Characteristics of Areca Palm Rhizosphere Soil
The areca palm (Areca catechu L.), an important economic and medicinal crop widely cultivated in the tropical zone, has been utilised extensively in agriculture, industry, and for religious purposes. Here, the diversity of areca palm rhizosphere microbiota were analyzed to further study the effect of the areca palm's development stages on the rhizosphere microbiota.
  • 513
  • 10 Jan 2022
Topic Review
Phosphorus Transport in World Rivers
Data on the geochemistry of phosphorus in the continental runoff of dissolved and solid substances were systematized and generalized, with a separate consideration of the processes of runoff transformation in river mouth areas. It has been established that atmospheric deposition, which many authors consider to be an important source of phosphorus in river runoff and not associated with mobilization processes in catchments, actually contains phosphorus from soil-plant recycling. This is confirmed by the fact that the input of phosphorus from the atmosphere into catchments exceeds its removal via water runoff. An analysis of the mass ratio of phosphorus in the adsorbed form and in the form of its own minerals was carried out. It was shown that the maximum mass of adsorbed phosphorus is limited by the solubility of its most stable minerals. The minimum concentrations of dissolved mineral and total phosphorus were observed in the rivers of the Arctic and subarctic belts; the maximum concentrations were confined to the most densely populated temperate zone and the zone of dry tropics and subtropics. In the waters of the primary hydrographic network, the phosphorus concentration exhibited direct relationships with the population density in the catchments and the mineralization of the river water and was closely correlated with the nitrogen content. This strongly suggests that economic activity is one of the main factors in the formation of river phosphorus runoff. The generalization of the authors’ and the literature’s data on the behavior of phosphorus at the river–sea mixing zone made it possible to draw a conclusion about the nonconservative distribution of phosphorus, in most cases associated with biological production and destruction processes. The conservative behavior of phosphorus was observed only in heavily polluted river mouths with abnormally high concentrations of this element.
  • 494
  • 07 Jan 2022
Topic Review
Sustainability Initiatives in the Canadian Port Sector
Maritime ports are critical nodes in the Canadian resource-based economy that can have significant environmental impacts near coastal communities and marine ecosystems. To address these impacts, Canadian Port Authorities (CPAs) assess their environmental performance using the Green Marine Environmental Program (GMEP). Reliance on this program necessitates its evaluation as an effective initiative to address sustainability in its broader context. 
  • 498
  • 07 Jan 2022
Topic Review
Green Hydrogen Value Chain
The potential of H2 as a fuel with the highest energy density per unit mass makes it great for application in all sectors that require energy. H2 is produced from a wide range of resources using different raw materials, pathways, and technologies, including fossil fuels and renewable energy. The classical method consists of breaking or reforming fossil fuels as a profitable H2 production pathway for industrial use, which was estimated (globally) at 85 million tons in 2016 (more than 600 billion Nm3/year). Therefore, the energy value of H2 and the clean energy index were not the main factors to consider in its use at an industrial level. Industrial H2 was used for the production of fertilizers, petrochemical refining, metalworking, food processing, cooling of generators of power plant energy and semiconductor manufacturing.
  • 573
  • 07 Jan 2022
Topic Review
Multiagent System and Rainfall-Runoff Model in Hydrological Problems
Typically, hydrological problems require approaches capable of describing and simulating part of the hydrological system, or the environmental consequences of natural or anthropic actions. Tools such as Multiagent System (MAS) and Rainfall-Runoff Model (RRM) can help researchers to develop and better understand water systems. 
  • 373
  • 06 Jan 2022
Topic Review
Geodiversity and Geoconservation in Central America
Central America is located in a dynamic region where tectonics and volcanism together with the tropical climate and its diverse vegetation have shaped the landscapes. 
  • 731
  • 06 Jan 2022
Topic Review
Regulation Promoting the New Circular Economy
Over the past few decades, the production and consumption of clothing has increased exponentially, leading to a dramatic increase in the negative environmental consequences produced by the fashion industry. Given the rising pace of global warming and the rising concern about the fashion industry’s contribution to the climate crisis and its exploitative social dimensions, decision makers, politicians and government officials have begun to promote sustainable fashion through public policy. This article reviews the main barriers facing a circular economy in general and the fashion industry in particular. It considers nascent regulations emerging throughout the world in the field of sustainable fashion, applying circular economic principles to the fashion industry.
  • 597
  • 06 Jan 2022
Topic Review
Dioxin
Dioxins and related compounds are environmental xenobiotics that are dangerous to human life, due to the accumulation and persistence in the environment and in the food chain. Cancer, reproductive and developmental issues, and damage to the immune system and endocrine system are only a few examples of the impact of such substances in everyday life. 
  • 640
  • 06 Jan 2022
Topic Review
Green Competitiveness of Enterprises
The omnichannel approach to forming marketing strategies for the development of the green competitiveness of enterprises is seen as a process for the inseparable interaction of marketing-mix elements that are aimed at promoting green competitiveness. This approach integrates traditional and digital marketing communication channels and provides consideration for stakeholder interests. The effectiveness of applying the omnichannel approach to the formation of marketing strategies to develop the green competitiveness of enterprises depends on a set of marketing communication channels, which, in various combinations, can increase or decrease the level of companies’ green competitiveness.
  • 602
  • 05 Jan 2022
Topic Review
Augmented Reality in Agriculture
Augmented Reality (AR) applications have become prevalent within smart industry manufacturing and wider popular culture sectors over the last decade, yet use of AR technology within an agricultural setting is still within its infancy. 
  • 1.7K
  • 04 Jan 2022
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