title: Cadmium mobilisation by dissolved organic matter in contaminated soils amended with compost and peat

authors: Welikala, Dharshika

abstract: Some organic matter (OM) soil amendments derived from biowaste have been shown to reduce plant uptake of Cd, which presents them as an attractive option for mitigating potential health risks on some contaminated soils. However, recent studies have highlighted that dissolved organic matter (DOM) release from the amendments may increase the mobilization of metals in those soils. The provenance of the OM and the quality of the emergent DOM have been suggested as important determinants in the extent to which this occurs. However, these effects have not been systematically tested in different soil environments, where the amount of DOM released from the OM, and its affinity to form Cd-DOM complexes, may vary. Our aim in this work was to explore whether the type of OM soil amendment influences Cd mobility in contaminated soils at different pHs, and if DOM characteristics contribute
to this effect.

text: Cadmium mobilisation by dissolved organic matter in contaminated soils amended with compost and peat Some organic matter (OM) soil amendments derived from biowaste have been shown to reduce plant uptake of Cd, which presents them as an attractive option for mitigating potential health risks on some contaminated soils. However, recent studies have highlighted that dissolved organic matter (DOM) release from the amendments may increase the mobilization of metals in those soils. The provenance of the OM and the quality of the emergent DOM have been suggested as important determinants in the extent to which this occurs. However, these effects have not been systematically tested in different soil environments, where the amount of DOM released from the OM, and its affinity to form Cd-DOM complexes, may vary. Our aim in this work was to explore whether the type of OM soil amendment influences Cd mobility in contaminated soils at different pHs, and if DOM characteristics contribute
to this effect.

year: 2019

title: The city of digital social innovators

authors: Certomà, Chiara

subjects: digital social innovation

abstract: The concept of digital social innovation (DSI) refers to a fast-growing set of initiatives aimed at providing innovative solutions to social problems and needs by deploying the potential of the social web and digital media. Despite having been often interpreted as synonymous with digitally enhanced social innovation, we explain here why, in consideration of its epistemological and socio-political potentialities, we understand it as an interdisciplinary set of practices able to interpret and support the changes of a society that is more and more intrinsically virtual and physical at the same time. Notably, we briefly discuss how DSI processes can be functionally mobilized in support of different socio-political projects, ranging from the mainstream neoliberal to the revolutionary ones. Eventually, we provide a synopsis of the articles included in this thematic issue, by aggregating them accordingly to the main stakeholders promoting the DSI projects, being more bottom-up oriented or more institutional-based.

text: The city of digital social innovators The concept of digital social innovation (DSI) refers to a fast-growing set of initiatives aimed at providing innovative solutions to social problems and needs by deploying the potential of the social web and digital media. Despite having been often interpreted as synonymous with digitally enhanced social innovation, we explain here why, in consideration of its epistemological and socio-political potentialities, we understand it as an interdisciplinary set of practices able to interpret and support the changes of a society that is more and more intrinsically virtual and physical at the same time. Notably, we briefly discuss how DSI processes can be functionally mobilized in support of different socio-political projects, ranging from the mainstream neoliberal to the revolutionary ones. Eventually, we provide a synopsis of the articles included in this thematic issue, by aggregating them accordingly to the main stakeholders promoting the DSI projects, being more bottom-up oriented or more institutional-based.

year: 2020

title: Boat electrofishing survey of fish populations in the Ohau Channel in December 2010

authors: Hicks, Brendan J.

abstract: The original purpose of this series of surveys was to apply an independent method to estimate the densities of common smelt and bullies in the Ohau Channel at fixed points along the bank which coincided with trap netting sites used by the National Institute of Water and Atmospheric Research (NIWA). Since the low number of smelt captured by a single day’s boat electrofishing became apparent compared to the numbers captured by seasonal trapping, the aim of the survey has been modified to provide on-going monitoring of the fish communities and abundance in the Ohau Channel, especially fish species that are taonga to Maori (eels, goldfish, and koura).

text: Boat electrofishing survey of fish populations in the Ohau Channel in December 2010 The original purpose of this series of surveys was to apply an independent method to estimate the densities of common smelt and bullies in the Ohau Channel at fixed points along the bank which coincided with trap netting sites used by the National Institute of Water and Atmospheric Research (NIWA). Since the low number of smelt captured by a single day’s boat electrofishing became apparent compared to the numbers captured by seasonal trapping, the aim of the survey has been modified to provide on-going monitoring of the fish communities and abundance in the Ohau Channel, especially fish species that are taonga to Maori (eels, goldfish, and koura).

year: 2011-11-15