Inter and intra population phenotypic variability of Lippia integrifolia(Verbenaceae) and its natural situation in the west-center of Argentina

The species Lippia integrifoliais an aromatic, sub-woody shrub, distributed from Northwest and Central Argentina to Bolivia. It is among the most important native aromatic species. It presents medicinal properties, some of which have been scientifically proven. As an alternative to harvesting, the process of domestication of the species was initiated. The objective of this work was to assess the phenotypic variability based on botanical-taxonomic and morpho-agronomic descriptors and the use of indicators to evaluate its natural situation in the west-center of Argentina. We worked in five wild populations, registering morphological variables, phenology, natural regeneration, herbivory and presence of diseases. L. integrifoliapresents a wide morphological variability, which can be explained with three morphological descriptors. Natural regeneration ́s rate is very low to zero, in four of the sites. The results obtained are of importance to make decisions related to the sustainable use in situ, and to begin a program of domestication of the species.

Sustainable management of populations impacted by harvesting and climate change

The sustainable use of natural resources is critical for addressing the global challenges of today. Strategies for sustainable harvesting need to consider not only harvested species, but also other non-harvested species interacting with them in the same ecosystem. In addition, environmental variation needs to be considered, with climate change currently being one of the main sources of this variation. Understanding the consequences of complex interactions between different drivers and processes affecting dynamics of species and ecosystems across spatial scales requires large-scale integrative research projects. The Norwegian research initiative “Sustainable management of renewable resources in a changing environment: an integrated approach across ecosystems” (SUSTAIN) was launched to fill knowledge gaps related to the sustainable management of populations and ecosystems experiencing climate change. SUSTAIN investigated terrestrial, marine and freshwater ecosystems in boreal and Arctic regions, using both theoretical developments and empirical analyses of long-term data. This Climate Research Special contains both synthesis articles and original research exemplifying some of the approaches used in SUSTAIN. In this introduction we highlight 4 key topics addressed by SUSTAIN: (i) population structure, (ii) interactions between species, (iii) spatial processes, and (iv) adaptive management. These topics are fundamental to the understanding of harvested species from an ecosystem perspective, and to ecosystem-based management approaches, which we are striving to work towards.

Water reuse in the food industry

Due to the significant growing demand for water, it is urgent to those in the food industry to consider a more rational and sustainable use of such a scarce natural resource. This chapter highlights alternative food processing methods that contemplate recycling and reusing water. Based on a systematic literature review, it highlights the adoption of cleaner production methods. The chapter focus on the meat and fresh produce sectors where evidence shows that water sustainability related methods is the most needed. Suggestions are proposed to minimize water waste through the treatment of effluents and decrease the impact of effluent pollution on the environment. In so doing, clear environmental and economic benefits could be achieved through the reduction of costs and value-adding to the final product. Yet, the implementation of Cleaner Production Methods would require support from the industry, policymakers, and consumers to encourage the recycling and reuse of water.

Integrated Marine Management in the United Kingdom Overseas Territories

Like many small island communities, the United Kingdom Overseas Territories (UKOTs) are directly dependent on their marine resources for a range of ecosystem services, such as income generation, subsistence, leisure, recreation and wellbeing. Healthy marine ecosystems also play a broader role in climate regulation, coastal resilience and habitat provision. With Blue Belt Programme assistance, the UKOTs are developing enhanced protection and sustainable management strategies for their marine environments, using an Integrated Marine Management (IMM) approach. This coordinates cross-sectoral planning and management to carefully balance marine conservation and sustainable use of resources in order to minimize socio-cultural and economic impacts to the local community. We describe the IMM approach taken in two UKOT case studies. In Ascension Island, a conservation planning and resource management process was initiated with an objective to protect at least 50% of Ascension’s waters from commercial fishing, resulting in the designation of one of the largest Marine Protected Areas (MPAs) in the Southern Atlantic. In St Helena, a new licensing framework for marine developments was developed within an existing sustainable use MPA. From these two approaches, we highlight aspects of the process, lessons learned and recommendations that may be useful for other small islands planning to implement IMM, particularly regarding the importance of effective stakeholder engagement, coordination across different governance scales, and long-term financial resources.

Green journalism and global environment

The study aims to determine, that, media coverage is important to influence people for environmental awareness and taking action in the cases of environmental protection. Primary data analysis has done for graphical representation of data. Research shows that, a large number of respondents agreed that, media coverage can generate awareness to environmental issues and disaster management. So, from the statistical analysis, we can say that green journalism and environmental Journalists, as well as mass media are playing a vital role to protect the environment. Media has uncommon occasions to gain the societies and policy makers the value of biodiversity in giving financial and ecological services and thereby promote its conservation, sustainable use and impartial sharing of benefits.

Lateral forces determine dimensional accuracy of the narrow-kerf sawing of wood

The shrinking global forest area limits the supply of industrially usable raw resources. This, in combination with the ever-increasing consumption of timber due to population growth can lead to the lack of a positive balance between the annual volumetric growth and consumption of wood. An important innovation toward increasing environmental and economic sustainability of timber production is to reduce the volume of wood residues by minimizing the sawing kerf. It results in higher material yield but may impact the dimensional accuracy of derived products. Therefore, the cutting tool geometry as well as the sawing process as a whole must be carefully optimized to assure optimal use of resources. The goal of this study is to better understand the causes of machining errors that occur when sawing wood with saws of varying thickness of kerf, with a special focus on re-sawing thin lamellae performed on the gang saw. Numerical simulations were tested against experimental results, considering influence of diverse components of cutting forces, in addition to the initial and operating stiffness coefficients of the saw blade. It has been demonstrated that asymmetric loads from the cutting process for the scraper saw blade can cause sawing inaccuracies. The simulation methodology developed in this research can be straightforwardly extended towards determination of optimal geometry of other cutting tools, particularly with the reduced sawing kerf. This may lead to more sustainable use of natural resources as well as an increase in economic gain for the wood processing industries.

“Nature-like” Cryoimmobilization of Phototrophic Microorganisms: New Opportunities for Their Long-Term Storage and Sustainable Use

It was found that immobilization of cells in poly(vinyl alcohol) (PVA) cryogel can be successfully applied for concurrent cryoimmobilization, cryoconservation and long-term storage of the cells of various phototrophic microorganisms (green and red microalgae, diatoms and cyanobacteria). For the first time, it was shown for 12 different immobilized microalgal cells that they can be stored frozen for at least 18 months while retaining a high level of viability (90%), and can further be used as an inoculum upon defrosting for cell-free biomass accumulation. Application of cryoimmobilized Chlorella vulgaris cells as inocula allowed the loading of a high concentration of the microalgal cells into the media for free biomass accumulation, thus increasing the rate of the process. It was shown that as minimum of 5 cycles of reuse of the same immobilized cells as inocula for cell accumulation could be realized when various real wastewater samples were applied as media for simultaneous microalgae cultivation and water purification.

A Sustainable Approach on Spruce Bark Waste Valorization through Hydrothermal Conversion

In the context of sustainable use of resources, hydrothermal conversion of biomass has received increased consideration. As well, the hydrochar (the solid C-rich phase that occurs after the process) has caused great interest. In this work, spruce bark (Picea abies) wastes were considered as feedstock and the influence of hydrothermal process parameters (temperature, reaction time, and biomass to water ratio) on the conversion degree has been studied. Using the response surface methodology and MiniTab software, the process parameters were set up and showed that temperature was the significant factor influencing the conversion, while residence time and the solid-to-liquid ratio had a low influence. Furthermore, the chemical (proximate and ultimate analysis), structural (Fourier-transform infrared spectroscopy, scanning electron microscopy) and thermal properties (thermogravimetric analysis) of feedstock and hydrochar were analyzed. Hydrochar obtained at 280 °C, 1 h processing time, and 1/5 solid-to-liquid ratio presented a hydrophobic character, numerous functional groups, a lower O and H content, and an improved C matter, as well as a good thermal stability. Alongside the structural features, these characteristics endorsed this waste-based product for applications other than those already known as a heat source.