{"title":"Anthropogenic Landform Modeling Using GIS Techniques Case Study: Vrancea Region","authors":"A. Ursu, D. Chelaru, F. Mihai, I. Iordache","doi":"10.5281/ZENODO.19144","DOIUrl":"https://doi.org/10.5281/ZENODO.19144","url":null,"abstract":"Anthropogenic landforms are the result of significant changes in the Earth's crust due to technological development of human society, guided by its economic, social and cultural needs. nthropogenic landforms of the studied area was analyzed using GIS techniques at the general scale, conducting the entire study area maps, and detailed modeling of representative samples in detail. Representing the anthropogenic landforms on the digital elevation model can be very important in studying natural hazards, such as hydrological modeling on flood plains, which could influence the direction of the flood wave. The digital elevation model (DEM) made by traditional methods can not represent the anthropogenic landforms, leading sometimes to a misinterpretation of reality on the ground.","PeriodicalId":367176,"journal":{"name":"Ecological Modeling eJournal","volume":"22 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116686438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Connor, K. Schwabe, D. King, D. Kaczan, M. Kirby
{"title":"Impacts of Climate Change on Lower Murray Irrigation","authors":"J. Connor, K. Schwabe, D. King, D. Kaczan, M. Kirby","doi":"10.1111/j.1467-8489.2009.00460.x","DOIUrl":"https://doi.org/10.1111/j.1467-8489.2009.00460.x","url":null,"abstract":"This article evaluates irrigated agriculture sector response and resultant economic impacts of climate change for a part of the Murray Darling Basin in Australia. A water balance model is used to predict reduced basin inflows for mild, moderate and severe climate change scenarios involving 1, 2 and 4°C warming, and predict 13, 38 and 63% reduced inflows. Impact on irrigated agricultural production and profitability are estimated with a mathematical programming model using a two-stage approach that simultaneously estimates short and long-run adjustments. The model accounts for a range of adaptive responses including: deficit irrigation, temporarily following of some areas, permanently reducing the irrigated area and changing the mix of crops. The results suggest that relatively low cost adaptation strategies are available for a moderate reduction in water availability and thus costs of such a reduction are likely to be relatively small. In more severe climate change scenarios greater costs are estimated. Adaptations predicted include a reduction in total area irrigated and investments in efficient irrigation. A shift away from perennial to annual crops is also predicted as the latter can be managed more profitably when water allocations in some years are very low.","PeriodicalId":367176,"journal":{"name":"Ecological Modeling eJournal","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131715432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Participatory Approach in Decision Making Processes for Water Resources Management in the Mediterranean Basin","authors":"C. Giupponi, J. Mysiak, J. Crimi","doi":"10.2139/ssrn.914481","DOIUrl":"https://doi.org/10.2139/ssrn.914481","url":null,"abstract":"This paper deals with the comparative analysis of different policy options for water resources management in three south-eastern Mediterranean countries. The applied methodology follows a participatory approach throughout its implementation and is supported by the use of three different software packages dealing with water allocation budget, water quality simulation, and Multi Criteria Analysis, respectively. The paper briefly describes the general objectives of the SMART project and then presents the three local case studies, the valuation objectives and the applied methodology - developed as a general replicable framework suitable for implementation in other decision-making processes. All the steps needed for a correct implementation are therefore described. Following the conceptualisation of the problem, the choice of the appropriate indicators as well as the calculation of their weighting and value functions are detailed. The paper concludes with the results of the Multi Criteria and the related Sensitivity Analyses performed, showing how the different policy responses under consideration can be assessed and furthermore compared through case studies thanks to their relative performances. The adopted methodology was found to be an effective operational approach for bridging scientific modelling and policy making by integrating the model outputs in a conceptual framework that can be understood and utilised by non experts, thus showing concrete potential for participatory decision making.","PeriodicalId":367176,"journal":{"name":"Ecological Modeling eJournal","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. O. Onyango, J. Ochiewo, C. A. Mulanda, Sweenarain Soobaschand Sunil, R. Kayanda, P. Otuo, J. A. Obuya, James M. Njru
{"title":"The Lost Coin: Redefining the Economic and Financial Impact of Small-Scale Fisheries, the Case of Lake Victoria, Kenya","authors":"H. O. Onyango, J. Ochiewo, C. A. Mulanda, Sweenarain Soobaschand Sunil, R. Kayanda, P. Otuo, J. A. Obuya, James M. Njru","doi":"10.2139/ssrn.3800868","DOIUrl":"https://doi.org/10.2139/ssrn.3800868","url":null,"abstract":"Official fisheries statistics have been characterized by under-estimation of catch and value. This study provided a methodological option to compare, contrast and validate official fisheries statistics using small-scale fisheries of Lake Victoria, Kenya. A standardized Fishing Business Model (FBM) was applied to reconstruct estimates of economic returns from Lake Victoria fisheries; taking into account fish auto-consumption, post-harvest losses and landings from illegal gears which are often missing in the official estimates. Primary data was collected using electronic questionnaires in various fish landing sites in July 2020 while secondary data was sourced from latest surveys on fish stocks, catches and fishing effort in the lake. Results indicate that fish catches amounted to 151,002mt, which implies 1.6 times the official estimates, and that Total annual Fishing Revenue (TFR) was USD 297,172,579.39 which was 1.9 times higher than published statistics. Further, a small-scale fisher was found to earn a daily wage of USD 17.6, inclusive of the value of auto-consumption, under-sized fish and other unsold catch which are usually unreported. We recommend a review of official fisheries statistics in order to correct under-valuation in small-scale fisheries and to re-adjust the management cost recovery and revenue allocation frame-work in the fisheries sub-sector.","PeriodicalId":367176,"journal":{"name":"Ecological Modeling eJournal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116690401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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