Search results for "state of the environment"
showing 3 items of 3 documents
Cost-efficiency assessments of marine monitoring methods lack rigor—a systematic mapping of literature and an end-user view on optimal cost-efficienc…
2021
Global deterioration of marine ecosystems, together with increasing pressure to use them, has created a demand for new, more efficient and cost-efficient monitoring tools that enable assessing changes in the status of marine ecosystems. However, demonstrating the cost-efficiency of a monitoring method is not straightforward as there are no generally applicable guidelines. Our study provides a systematic literature mapping of methods and criteria that have been proposed or used since the year 2000 to evaluate the cost-efficiency of marine monitoring methods. We aimed to investigate these methods but discovered that examples of actual cost-efficiency assessments in literature were rare, contr…
Governance as a barrier to mainstreaming sustainable development in Riga, Latvia
2008
The Aalborg Commitments baseline review of urban sustainability undertaken in Riga, Latvia reveals significant discrepancies between the sustainability criteria of the Aalborg Commitments and municipal statutes and planning documents. An analysis of the European Common Indicators (ECI) and the State of the Environment in Riga indicators indicates that they can only partially fulfil a monitoring function for the implementation of the Aalborg Commitments. To gain insight into the institutional arrangements and governance practices of the municipal government and administration in the context of sustainability City Council deputies and municipal administration structural units and personnel we…
Rapid Quantification of Microalgae Growth with Hyperspectral Camera and Vegetation Indices
2021
Spectral cameras are traditionally used in remote sensing of microalgae, but increasingly also in laboratory-scale applications, to study and monitor algae biomass in cultures. Practical and cost-efficient protocols for collecting and analyzing hyperspectral data are currently needed. The purpose of this study was to test a commercial, easy-to-use hyperspectral camera to monitor the growth of different algae strains in liquid samples. Indices calculated from wavebands from transmission imaging were compared against algae abundance and wet biomass obtained from an electronic cell counter, chlorophyll a concentration, and chlorophyll fluorescence. A ratio of selected wavebands containing near…