The Experts below are selected from a list of 273 Experts worldwide ranked by ideXlab platform
Soen-han Lee - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of the preservation value and location of Farm Ponds in Yunlin County, Taiwan.
International journal of environmental research and public health, 2013Co-Authors: Wen-wen Chou, Soen-han LeeAbstract:Farm Ponds in Yunlin County first appeared in 1,622 and have played roles in habitation, production, the ecology, culture, and disaster reduction. Farm Ponds largely disappeared with the development of urban areas and the industrial sector; thus, effective preservation of the remaining Ponds is critical. The criteria to evaluate the preservation value of Farm Ponds is established by expert questionnaires which follow the Fuzzy Delphi Method (FDM) and Fuzzy Analytic Hierarchy Process (FAHP), and GIS, which are integrated into a spatial analysis of the remaining 481 Farm Ponds in Yunlin County. The results show that 28 Ponds should be preserved to continue the cultural interaction between Farm Ponds and settlements; 36 Ponds should preserved to connect coasts and streams, which are important habitats for birds; 30 Ponds should be preserved to increase storage capacity, recharge groundwater, and reduce land subsidence; four Ponds should be preserved as Feng-Shui Ponds in front of temples in settlements or as recreation areas for local citizens; and four Farms should be preserved (high priority) in agricultural production areas to support irrigation. In short, FAHP and GIS are integrated to evaluate the number and locations of Farm Ponds that provide water for habitation, production, the ecology, culture, and disaster reduction and maintain the overall preservation value in Yunlin County. The results could inform governmental departments when considering conservation policies.
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Integrated Fuzzy Delphi Method and GIS to Indentify Farm Ponds’ Preservation Values and Spatial Location in Yunlin County, Taiwan
Advanced Materials Research, 2012Co-Authors: Soen-han Lee, Wen-wen ChouAbstract:Objective of this work is to indentify Farm Ponds’ preservation values and spatial location for Farm Ponds conservation in Yunlin County, Taiwan. Conclusions of the Fuzzy Delphi Method and GIS mapping found that Farm Ponds in western coastal areas presented higher living, production, ecology, and cultural landscapes preservation value, while the inland areas in central plains and the northeast presented the advantages of ecology, living, environmental disaster relief and cultural landscapes.
Wen-wen Chou - One of the best experts on this subject based on the ideXlab platform.
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Evaluation of the preservation value and location of Farm Ponds in Yunlin County, Taiwan.
International journal of environmental research and public health, 2013Co-Authors: Wen-wen Chou, Soen-han LeeAbstract:Farm Ponds in Yunlin County first appeared in 1,622 and have played roles in habitation, production, the ecology, culture, and disaster reduction. Farm Ponds largely disappeared with the development of urban areas and the industrial sector; thus, effective preservation of the remaining Ponds is critical. The criteria to evaluate the preservation value of Farm Ponds is established by expert questionnaires which follow the Fuzzy Delphi Method (FDM) and Fuzzy Analytic Hierarchy Process (FAHP), and GIS, which are integrated into a spatial analysis of the remaining 481 Farm Ponds in Yunlin County. The results show that 28 Ponds should be preserved to continue the cultural interaction between Farm Ponds and settlements; 36 Ponds should preserved to connect coasts and streams, which are important habitats for birds; 30 Ponds should be preserved to increase storage capacity, recharge groundwater, and reduce land subsidence; four Ponds should be preserved as Feng-Shui Ponds in front of temples in settlements or as recreation areas for local citizens; and four Farms should be preserved (high priority) in agricultural production areas to support irrigation. In short, FAHP and GIS are integrated to evaluate the number and locations of Farm Ponds that provide water for habitation, production, the ecology, culture, and disaster reduction and maintain the overall preservation value in Yunlin County. The results could inform governmental departments when considering conservation policies.
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Integrated Fuzzy Delphi Method and GIS to Indentify Farm Ponds’ Preservation Values and Spatial Location in Yunlin County, Taiwan
Advanced Materials Research, 2012Co-Authors: Soen-han Lee, Wen-wen ChouAbstract:Objective of this work is to indentify Farm Ponds’ preservation values and spatial location for Farm Ponds conservation in Yunlin County, Taiwan. Conclusions of the Fuzzy Delphi Method and GIS mapping found that Farm Ponds in western coastal areas presented higher living, production, ecology, and cultural landscapes preservation value, while the inland areas in central plains and the northeast presented the advantages of ecology, living, environmental disaster relief and cultural landscapes.
Boubacar Barry - One of the best experts on this subject based on the ideXlab platform.
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rainfall variability adaptation strategies an ex ante assessment of supplemental irrigation from Farm Ponds in southern burkina faso
Agricultural Systems, 2017Co-Authors: Safietou Sanfo, Bruno Barbier, Isabelle W P Dabire, Paul L G Vlek, William M Fonta, Boubacar Ibrahim, Boubacar BarryAbstract:Abstract This study assesses the economic value of supplemental irrigation as a rainfall variability adaptation strategy in a small catchment in south-western Burkina Faso. The bio-economic model built for the catchment maximises net cash income by optimally allocating land, labour, water and capital. Yields vary according to soil type, agricultural practice and the type of rainy season. We introduced Farm Ponds as an adaptation strategy – called supplemental irrigation – for grain crops during long dry spells in the rainy season. Simulation results show that supplemental irrigation can be cost effective and increase incomes, particularly during years with poor rainfall. However, in this catchment, gains from supplemental irrigation are limited because labour and capital are constraints on pond implementation.
Jesus J Casas - One of the best experts on this subject based on the ideXlab platform.
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diversity in mediterranean Farm Ponds trade offs and synergies between irrigation modernisation and biodiversity conservation
Freshwater Biology, 2013Co-Authors: Francisca Fuentesrodriguez, J. Toja, Patricio Peñalver, Melchor Juan, David Serrano León, Irene Gallego, Encarnación Fenoy, Mirian Lusi, Jesus J CasasAbstract:SUMMARY 1. Agricultural intensification has caused dramatic biodiversity loss in many agricultural landscapes over the last century. Here, we investigated whether new types of Farm Ponds (made of artificial substrata) in intensive systems and natural-substratum Ponds in traditional Farming systems differ in their value for aquatic biodiversity conservation. 2. We analysed the main patterns of environmental variation, compared a-, b- and c-diversity of macroinvertebrates between Ponds types and evaluated the role of submerged aquatic vegetation (SAV). Generalised additive models (GAM) were used to analyse the relationships of a- and b-diversity with environmental predictors, and variation partitioning to separate the effect of environmental and spatial characteristics on the variation in macroinvertebrate assemblages. Moran’s eigenvector maps (MEMs) were used to define spatial variables. 3. A principal coordinate analysis (PCoA) detected a primary environmental gradient that separated nutrient-rich Ponds from those dominated by SAV; a secondary morphometric gradient distinguished natural-substratum Ponds, with large surface area and structural complexity, from artificial-substratum Ponds with steeper slopes. Natural-substratum Ponds had almost twice the a- and c-diversity of artificial-substratum Ponds, and diversity significantly increased when SAV was present, particularly in artificial-substratum Ponds. Total phosphorus (TP) strongly contributed to explain the patterns in diversity, while SAV was a significant predictor of assemblage composition and diversity. GAMs revealed optima of both a-diversity at intermediate SAV covers and b-diversity at intermediate–high TP concentrations. 4. These findings have important implications for conservation planning. Adaptation of artificialsubstratum Ponds by adding natural substratum and smoothing the gradient of pond margins would improve their conservation value. Development of SAV with occasional harvests and certain cautionary measures to control nutrient levels may also improve both the agronomical and environmental function of Ponds.
Encarnación Fenoy - One of the best experts on this subject based on the ideXlab platform.
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Two faces of agricultural intensification hanging over aquatic biodiversity: The case of chironomid diversity from Farm Ponds vs. natural wetlands in a coastal region
Estuarine Coastal and Shelf Science, 2015Co-Authors: Encarnación Fenoy, J. Jesús CasasAbstract:Abstract Increasing agricultural land use and intensification have given rise to the loss and eutrophication of coastal wetlands worldwide. In Mediterranean coastal regions, irrigated agriculture, in turn, has prompted the proliferation of Farm Ponds which might compensate for wetland loss and degradation if their management regimen results are compatible with biodiversity conservation. Here, we studied regional (γ-), local (α-) and interlocal (β-) diversities of chironomids in coastal wetlands and irrigation Ponds from a Mediterranean region, to determine the contribution of each habitat type to regional diversity, and to disentangle which environmental factors, anthropogenic or natural, contributed most to explain diversity patterns. Regional diversity was slightly, but still significantly, higher in natural wetlands than in Farm Ponds, which can be attributed to the significantly higher β-diversity in natural wetlands, since, despite the much larger surface area of wetlands, both habitat types did not differ in local diversity (α-diversity). In both habitats, however, the contribution of β-diversity to regional diversity was higher compared to that of α-diversity, and the component ‘spatial species turnover’ exceeded that of the component ‘nestedness’ of β-diversity. This, together with an outstanding assemblage complementarity (approx. 50%) between habitat types, emphasizes the vital contribution of Farm Ponds, together with natural wetlands, to regional diversity. Despite the higher salinity and eutrophication of natural wetlands that tended to reduce diversity in chironomid assemblages, their more heterogeneous shore line likely compensated somewhat for such negative effects. Unlike wetlands, the homogeneous and unvegetated shore of Farm Ponds, in conjunction with their intensive management, probably induced adverse effects on local and interlocal diversity. Specific recommendations are given in this regards to mitigate impacts and improve the value of both habitats for biodiversity conservation.
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diversity in mediterranean Farm Ponds trade offs and synergies between irrigation modernisation and biodiversity conservation
Freshwater Biology, 2013Co-Authors: Francisca Fuentesrodriguez, J. Toja, Patricio Peñalver, Melchor Juan, David Serrano León, Irene Gallego, Encarnación Fenoy, Mirian Lusi, Jesus J CasasAbstract:SUMMARY 1. Agricultural intensification has caused dramatic biodiversity loss in many agricultural landscapes over the last century. Here, we investigated whether new types of Farm Ponds (made of artificial substrata) in intensive systems and natural-substratum Ponds in traditional Farming systems differ in their value for aquatic biodiversity conservation. 2. We analysed the main patterns of environmental variation, compared a-, b- and c-diversity of macroinvertebrates between Ponds types and evaluated the role of submerged aquatic vegetation (SAV). Generalised additive models (GAM) were used to analyse the relationships of a- and b-diversity with environmental predictors, and variation partitioning to separate the effect of environmental and spatial characteristics on the variation in macroinvertebrate assemblages. Moran’s eigenvector maps (MEMs) were used to define spatial variables. 3. A principal coordinate analysis (PCoA) detected a primary environmental gradient that separated nutrient-rich Ponds from those dominated by SAV; a secondary morphometric gradient distinguished natural-substratum Ponds, with large surface area and structural complexity, from artificial-substratum Ponds with steeper slopes. Natural-substratum Ponds had almost twice the a- and c-diversity of artificial-substratum Ponds, and diversity significantly increased when SAV was present, particularly in artificial-substratum Ponds. Total phosphorus (TP) strongly contributed to explain the patterns in diversity, while SAV was a significant predictor of assemblage composition and diversity. GAMs revealed optima of both a-diversity at intermediate SAV covers and b-diversity at intermediate–high TP concentrations. 4. These findings have important implications for conservation planning. Adaptation of artificialsubstratum Ponds by adding natural substratum and smoothing the gradient of pond margins would improve their conservation value. Development of SAV with occasional harvests and certain cautionary measures to control nutrient levels may also improve both the agronomical and environmental function of Ponds.
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Farm Ponds as Potential Complementary Habitats to Natural Wetlands in a Mediterranean Region
Wetlands, 2012Co-Authors: J. Jesús Casas, J. Toja, Patricio Peñalver, Melchor Juan, David Serrano León, Francisca Fuentes-rodríguez, Irene Gallego, Encarnación Fenoy, Carmen Pérez-martínez, Pedro Abelardo García SánchezAbstract:We compared morphometric and physico-chemical characteristics of Farm Ponds and natural wetlands in Andalusia (southern Spain) to determine whether artificial waterbodies might act as alternative and/or complementary habitats for aquatic biodiversity. Farm Ponds were much smaller than natural wetlands, making them unsuitable for species requiring large waterbodies. However, we observed high Farm pond density in areas lacking natural wetlands, which suggests a prime role for the conservation of species with low dispersal capacities. Natural-substrate Ponds were abundant in traditional extensive Farming systems and showed shoreline complexity as high as the most complex natural wetlands. Areas with more intensive agriculture were dominated by artificial-substrate Ponds and wetlands, with low physical complexity in both. The high copper load in sediments, due to the use of copper sulphate as biocide, differentiated the artificial-substrate Ponds from natural-looking Ponds and all natural wetland types. Aqueous mineral levels in Farm Ponds were much lower than in natural wetlands. We can conclude that Farm Ponds might play a principal role in region-wide habitat complementarity, by providing a relatively high density of small, permanent, oligohaline waterbodies that is not matched by natural wetland. To enhance this role, measures regulating both pond construction and management are needed, particularly for artificial-substrate Ponds.
