The Experts below are selected from a list of 264 Experts worldwide ranked by ideXlab platform
Mar Cabeza - One of the best experts on this subject based on the ideXlab platform.
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Assessing Replacement Cost of conservation areas: how does habitat loss influence priorities?
Biological Conservation, 2009Co-Authors: Atte Moilanen, Anni Arponen, Jogeir N. Stokland, Mar CabezaAbstract:Replacement Cost refers to the loss incurred if the ideal set of conservation areas cannot be protected due to compulsory inclusion or exclusion of some area candidates. This Cost can be defined either in terms of loss of conservation value or in terms of extra acquisition Cost, and it has a clear mathematical definition as a difference between the value of the unconstrained optimal solution and a constrained suboptimal solution. In this work we for the first time show how Replacement Cost can be calculated in the context of sequential reserve selection, where a reserve network is developed over a longer time period and ongoing habitat loss influences retention and availability of sites. In case of site exclusion, a question that can be asked is, “if a site belonging to the ideal (optimal) solution cannot be obtained, what expected loss in reserve network value does this entail by the end of the planning period given that the rest of the solution is re-organized in the most advantageous manner?” Heuristically, the proposed method achieves the ambit of combining irreplaceability and vulnerability into one score of site importance. We applied Replacement Cost analysis to conservation prioritization for wood-inhabiting fungi in Norway, identifying factors that influence Replacement Cost and urgency of site acquisition. Among other things we find that the reliability of loss rate information is important, because the optimal site acquisition order may be strongly influenced by underestimated loss rates.
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Replacement Cost: A practical measure of site value for Cost-effective reserve planning
Biological Conservation, 2006Co-Authors: Mar Cabeza, Atte MoilanenAbstract:Conservation needs are often in direct competition with other forms of land-use, and therefore protection of biodiversity must be Cost-efficient. While common reserve selection algorithms address this problem, quantitative planning tools often suggest an optimal set of sites that is not necessarily convenient for practical conservation. Besides Cost-effective solutions we require flexibility if land-use conflicts are to be effectively resolved. We introduce a novel concept for site value in quantitative reserve planning. Replacement Cost refers to the loss in solution value given that the optimal Cost-efficient solution cannot be protected and alternative solutions, with particular sites forcibly included or excluded, are needed. This Cost can be defined either in terms of loss of biological value or in terms of extra economic Cost, and it has clear mathematical definitions in the context of benefit-function-based reserve planning. A main difference with the much-used concept of irreplaceability is that the latter tells about the likelihood of needing a site for achieving a particular conservation target. Instead, Replacement Cost tells us at what Cost (biological or economic) can we exclude (or include) a site from the reserve network. Here, we illustrate the concept with hypothetical examples and show that Replacement-Cost analysis should prove useful in an interactive planning process, improving our understanding of the importance of a site for Cost-efficient conservation.
Atte Moilanen - One of the best experts on this subject based on the ideXlab platform.
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Assessing Replacement Cost of conservation areas: how does habitat loss influence priorities?
Biological Conservation, 2009Co-Authors: Atte Moilanen, Anni Arponen, Jogeir N. Stokland, Mar CabezaAbstract:Replacement Cost refers to the loss incurred if the ideal set of conservation areas cannot be protected due to compulsory inclusion or exclusion of some area candidates. This Cost can be defined either in terms of loss of conservation value or in terms of extra acquisition Cost, and it has a clear mathematical definition as a difference between the value of the unconstrained optimal solution and a constrained suboptimal solution. In this work we for the first time show how Replacement Cost can be calculated in the context of sequential reserve selection, where a reserve network is developed over a longer time period and ongoing habitat loss influences retention and availability of sites. In case of site exclusion, a question that can be asked is, “if a site belonging to the ideal (optimal) solution cannot be obtained, what expected loss in reserve network value does this entail by the end of the planning period given that the rest of the solution is re-organized in the most advantageous manner?” Heuristically, the proposed method achieves the ambit of combining irreplaceability and vulnerability into one score of site importance. We applied Replacement Cost analysis to conservation prioritization for wood-inhabiting fungi in Norway, identifying factors that influence Replacement Cost and urgency of site acquisition. Among other things we find that the reliability of loss rate information is important, because the optimal site acquisition order may be strongly influenced by underestimated loss rates.
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Replacement Cost: A practical measure of site value for Cost-effective reserve planning
Biological Conservation, 2006Co-Authors: Mar Cabeza, Atte MoilanenAbstract:Conservation needs are often in direct competition with other forms of land-use, and therefore protection of biodiversity must be Cost-efficient. While common reserve selection algorithms address this problem, quantitative planning tools often suggest an optimal set of sites that is not necessarily convenient for practical conservation. Besides Cost-effective solutions we require flexibility if land-use conflicts are to be effectively resolved. We introduce a novel concept for site value in quantitative reserve planning. Replacement Cost refers to the loss in solution value given that the optimal Cost-efficient solution cannot be protected and alternative solutions, with particular sites forcibly included or excluded, are needed. This Cost can be defined either in terms of loss of biological value or in terms of extra economic Cost, and it has clear mathematical definitions in the context of benefit-function-based reserve planning. A main difference with the much-used concept of irreplaceability is that the latter tells about the likelihood of needing a site for achieving a particular conservation target. Instead, Replacement Cost tells us at what Cost (biological or economic) can we exclude (or include) a site from the reserve network. Here, we illustrate the concept with hypothetical examples and show that Replacement-Cost analysis should prove useful in an interactive planning process, improving our understanding of the importance of a site for Cost-efficient conservation.
Kelly Scheepers - One of the best experts on this subject based on the ideXlab platform.
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The use of Replacement Cost method to assess and manage the impacts of water resource development on Australian indigenous customary economies
Journal of environmental management, 2014Co-Authors: Sue Jackson, Marcus Finn, Kelly ScheepersAbstract:The value of functional and biologically diverse landscapes to indigenous societies is increasingly recognised in public debates about development pathways but rarely rigorously assessed in development decisions. Using the Replacement Cost method, we quantify the direct consumptive value of aquatic species and sites for indigenous subsistence in three Australian tropical river catchments where negligible data exists on indigenous water values and the extensive use of wild resources for food, art, craft and medicines. The results establish a baseline for assessing and monitoring the socio-economic impact of hydrological and ecological changes from water resource development. More than 90% of the gross Replacement value in each catchment was accounted for by a small subset of high value species which could be used as integrated indicators of ecological and socio-economic change. The total value of species harvested was distributed across a large number of sites, justifying the need for a regional management approach to ensure the maintenance of diverse habitats for hunting and fishing. While ‘value’ is a cultural, context-dependent construct, studies like this one can lend legitimacy to a targeted approach to environmental and social impact assessment of water resource development proposals by calling for prioritisation of mitigation and management actions.
Vladimir Riecicky - One of the best experts on this subject based on the ideXlab platform.
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HICSS - Case Study: Replacement Cost Based Approach to Risk Management of Knowledge Assets
2011 44th Hawaii International Conference on System Sciences, 2011Co-Authors: Vladimir RiecickyAbstract:In response to an identification of IT risks, driven by dependency on key knowledge bearers, we designed an approach to knowledge asset management based on an idea of knowledge quantification using a concept of Replacement Cost. The implementation case complementing our knowledge transfer initiatives, delivered substantial business value to the company in terms of a sustainable mitigation of the identified IT Risks. We have learned that for knowledge management to be successful, it must cover a broad spectrum of disciplines that are well aligned with the organizational architecture in place and designed for the approach accordingly. Analysis of the results, achieved from the application of the approach, indicate that, on average, knowledge transfer on its own accounts for less than 30% of changes in knowledge asset size and distribution. The major sources of influence to knowledge assets are employee turnover, evolution of the knowledge subject itself, and task assignment policy at the operational level.
Jogeir N. Stokland - One of the best experts on this subject based on the ideXlab platform.
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Assessing Replacement Cost of conservation areas: how does habitat loss influence priorities?
Biological Conservation, 2009Co-Authors: Atte Moilanen, Anni Arponen, Jogeir N. Stokland, Mar CabezaAbstract:Replacement Cost refers to the loss incurred if the ideal set of conservation areas cannot be protected due to compulsory inclusion or exclusion of some area candidates. This Cost can be defined either in terms of loss of conservation value or in terms of extra acquisition Cost, and it has a clear mathematical definition as a difference between the value of the unconstrained optimal solution and a constrained suboptimal solution. In this work we for the first time show how Replacement Cost can be calculated in the context of sequential reserve selection, where a reserve network is developed over a longer time period and ongoing habitat loss influences retention and availability of sites. In case of site exclusion, a question that can be asked is, “if a site belonging to the ideal (optimal) solution cannot be obtained, what expected loss in reserve network value does this entail by the end of the planning period given that the rest of the solution is re-organized in the most advantageous manner?” Heuristically, the proposed method achieves the ambit of combining irreplaceability and vulnerability into one score of site importance. We applied Replacement Cost analysis to conservation prioritization for wood-inhabiting fungi in Norway, identifying factors that influence Replacement Cost and urgency of site acquisition. Among other things we find that the reliability of loss rate information is important, because the optimal site acquisition order may be strongly influenced by underestimated loss rates.
