Macroinvertebrates and microbes (Archaea, Bacteria) offer complementary insights into mine-pit lake ecology

The broad objective of this research was to determine the environmental drivers of macroinvertebrate and microbial assemblages in acidic pit lakes. This is important because pit lake ecosystem development is influenced by prevailing environmental characteristics. Three lakes (Stockton, Kepwari, WO5H) within a larger pit-lake district in Collie, Western Australia were surveyed for spatial variability of benthic macroinvertebrate and microbe (Archaea, Bacteria) assemblage composition as well as potential environmental drivers (riparian condition, aquatic habitat, sediments, and aquatic chemistry) of assemblages. With the exception of sediment chemistry, biophysical variables were significantly different across lakes and reflected riparian condition and groundwater chemistry. Microbial assemblages in pit lakes were significantly different across lakes and correlated with water chemistry, particularly metals in Lake WO5H. However, the most abundant microbes were not readily identified beyond class, making it difficult to speculate on their ecological function. Macroinvertebrate assemblage composition and species richness were also significantly different across all lakes, and in Lake WO5H (a lake with low pH and high metal concentrations), taxa were correlated with benthic organic matter as well as water chemistry. Results indicated that despite poor water quality, input of nutrients from terrestrial leaf litter can support or augment pit lake ecosystems. This is a demonstration of the concept that connection of pit lakes to catchments can positively affect aquatic ecosystems, which can inform management actions for remediation

Ultramicroelectrode Array Based Sensors: A Promising Analytical Tool for Environmental Monitoring

The particular analytical performance of ultramicroelectrode arrays (UMEAs) has attracted a high interest by the research community and has led to the development of a variety of electroanalytical applications. UMEA-based approaches have demonstrated to be powerful, simple, rapid and cost-effective analytical tools for environmental analysis compared to available conventional electrodes and standardised analytical techniques. An overview of the fabrication processes of UMEAs, their characterization and applications carried out by the Spanish scientific community is presented. A brief explanation of theoretical aspects that highlight their electrochemical behavior is also given. Finally, the applications of this transducer platform in the environmental field are discussed

La gobernanza y su relación con la competitividad en una firma integrada a una cadena de suministro

Soportado en una búsqueda bibliográfica sobre gobernanza y Logística, el artículo destaca tendencias teóricas sobre la gerencia de una firma formuladas para organizar la producción de manera interna o externa, estimando reducir costos, tiempo y riesgos del proceso de producción. Se destaca el debate sobre “gobernanza-gobernabilidad”, “Cadena de Suministro”, “Logística de distribución” y “competitividad”. El artículo concluye sobre estrategias que pueden diseñarse desde la gobernanza de una firma que decide trabajar de manera colaborativa con otras en una CDS

Shaping the social orientation of academic entrepreneurship: an exploratory study

Purpose Despite growing scholarly interest in academic entrepreneurship (AE) few studies have examined its non-commercial aspects and how it contributes to meeting grand societal challenges. One explanation for this may be the continuing focus of AE on intellectual property commercialization. This paper aims to address this knowledge gap by uncovering how universities can contribute to promoting non-commercial forms of AE. Design/methodology/approach This paper uses the human capital theoretical lens to make its argument and applies it to data obtained from exploratory qualitative research (55 semi-structured interviews and nine focus groups) in the developing countries of Bolivia, Colombia and Ecuador. Findings Universities can promote different forms of non-commercial AE even in the absence of sophisticated resources for innovation, through the stimulation of the specific human capital of the university community resulting from activities where they help others. Originality/value This paper proposes a general framework for advancing theory development in AE and its non-commercial forms, based on data obtained in uncharted territories for AE

Shaping the social orientation of academic entrepreneurship:an exploratory study

Purpose Despite growing scholarly interest in academic entrepreneurship (AE) few studies have examined its non-commercial aspects and how it contributes to meeting grand societal challenges. One explanation for this may be the continuing focus of AE on intellectual property commercialization. This paper aims to address this knowledge gap by uncovering how universities can contribute to promoting non-commercial forms of AE. Design/methodology/approach This paper uses the human capital theoretical lens to make its argument and applies it to data obtained from exploratory qualitative research (55 semi-structured interviews and nine focus groups) in the developing countries of Bolivia, Colombia and Ecuador. Findings Universities can promote different forms of non-commercial AE even in the absence of sophisticated resources for innovation, through the stimulation of the specific human capital of the university community resulting from activities where they help others. Originality/value This paper proposes a general framework for advancing theory development in AE and its non-commercial forms, based on data obtained in uncharted territories for AE

Are Microcosms Tiny Pit Lakes?

Microcosm experiments are frequent precursors to field trials for the treatment of acidic pit lakes using organic matter. We conducted field and microcosm experiments to test the effectiveness of hay to remediate two small, shallow acidic pit lakes. ‘West’ Lake was treated with 19 t of hay and ‘East’ Lake was untreated. Microcosms mimicked key lake trends in water quality, increasing pH and reducing metal concentrations to a greater extent and faster than the field trial. However, microcosms are not tiny pit lakes because they provide an overly optimistic picture of remediation efficacy

Governance and its relationship with competitiveness in a firm integrated into a supply chain

Soportado en una búsqueda bibliográfica sobre gobernanza y Logística, el artículo destaca tendencias teóricas sobre la gerencia de una firma formuladas para organizar la producción de manera interna o externa, estimando reducir costos, tiempo y riesgos del proceso de producción. Se destaca el debate sobre “gobernanza-gobernabilidad”, “Cadena de Suministro”, “Logística de distribución” y “competitividad”. El artículo concluye sobre estrategias que pueden diseñarse desde la gobernanza de una firma que decide trabajar de manera colaborativa con otras en una CDS.Supported in a bibliographic search on governance and logistics, the article highlights theoretical trends on the management of a firm formulated to organize production internally or externally, estimating to reduce costs, time and risks of the production process. The debate on "governance-governability", "Supply Chain", "Distribution logistics" and "competitiveness" stands out. The article concludes on strategies that can be designed from the governance of a firm that decides to work collaboratively with others in a CSD