The Experts below are selected from a list of 125829 Experts worldwide ranked by ideXlab platform
Jose A Juanes - One of the best experts on this subject based on the ideXlab platform.
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mapping the environmental risk assessment of Marinas on water quality the atlas of the spanish coast
Marine Pollution Bulletin, 2019Co-Authors: Aina G Gomez, Paloma F Valdor, Barbara Ondiviela, Juan L Diaz, Jose A JuanesAbstract:Recreational sailing sector has an impact on water quality in Marinas. This study proposes a standard procedure to assess the environmental risk of Marinas on water quality. Risk is assessed through integrating environmental pressures, environmental conditions and societal responses (i.e. the Pressure-State-Response model). Pressures are estimated considering the main driving forces: navigation, port, dredging and external activities. State is estimated through combining the susceptibility, the ecological value and naturalness. Response is estimated through environmental management instruments and adopted measures. Managers and authorities can hierarchically classify Marinas from a multi-scale spatial framework. This tool is particularly powerful for generating local, regional or national atlases to prioritize environmental planning actions. The method is applied to 320 Marinas along the Spanish coast. This implementation confirms the usefulness, versatility and adaptability of this procedure as a tool for the environmental management of Marinas.
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atlas of susceptibility to pollution in Marinas application to the spanish coast
Marine Pollution Bulletin, 2017Co-Authors: Aina G Gomez, Barbara Ondiviela, Maria Fernandez, Jose A JuanesAbstract:An atlas of susceptibility to pollution of 320 Spanish Marinas is provided. Susceptibility is assessed through a simple, fast and low cost empirical method estimating the flushing capacity of Marinas. The Complexity Tidal Range Index (CTRI) was selected among eleven empirical methods. The CTRI method was selected by means of statistical analyses because: it contributes to explain the system's variance; it is highly correlated to numerical model results; and, it is sensitive to Marinas' location and typology. The process of implementation to the Spanish coast confirmed its usefulness, versatility and adaptability as a tool for the environmental management of Marinas worldwide. The atlas of susceptibility, assessed through CTRI values, is an appropriate instrument to prioritize environmental and planning strategies at a regional scale.
Loke Ming Chou - One of the best experts on this subject based on the ideXlab platform.
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Distribution of soft bottom macrobenthic communities in tropical Marinas of Singapore
Urban Ecosystems, 2019Co-Authors: Kok Ben Toh, Tai Chong Toh, Pei Rong Cheo, Karenne Tun, Loke Ming ChouAbstract:The establishment of Marinas alters physico-chemical conditions and affects distribution of resident epibiotic and pelagic communities along coastal areas. However, information on the soft bottom macrobenthos within and around these boating facilities in the tropics is limited. Here, we investigated if macrobenthic communities differed among three representative tropical Marinas, and whether the communities inhabiting the Marinas differed from those outside the Marinas. Ekman grab sampling of the soft bottom sediment at three Singapore Marinas – Raffles Marina (RM), ONE^o15 Marina (OMC), Marina at Keppel Bay (MKB) – yielded a total of 73 taxa from eight phyla. Accounting for temporal variations, taxonomic richness did not differ among Marinas, while Shannon index (MKB > RM = OMC) and abundance (RM > OMC > MKB) did. Macrobenthic community composition differed among the Marinas, with RM dominated by a high proportion of opportunistic species and OMC supporting species that were sensitive to pollution. The surveys also revealed that communities within and outside Marinas differed. Unlike RM which is more enclosed, diversity was higher within MKB than outside it, likely because the latter marina had a layout that encouraged flushing which maintained good water quality. The study showed that while Singapore’s tropical Marinas can support diverse groups of macrobenthic taxa, the presence of high proportions of opportunistic species suggested that pollution within the Marinas was still significant. Macrofaunal diversity in tropical Marinas, such as those in Singapore, may be promoted by designs that improve water exchange.
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Spatial variability of epibiotic assemblages on marina pontoons in Singapore
Urban Ecosystems, 2017Co-Authors: Kok Ben Toh, Tai Chong Toh, Pei Rong Cheo, Karenne Tun, Loke Ming ChouAbstract:Berthing pontoons, one of the most ubiquitous structures in Marinas, are known to provide recruitment substrate for a variety of marine biota but little has been reported on their capacity to support epibiotic organisms in tropical Marinas, and even less is known about the factors that shape their distribution in such environments. We surveyed the epibiotic assemblages on the sides of pontoons in three Singapore Marinas and examined the environmental conditions that influenced their distribution. A total of 94 taxa were recorded, with each marina hosting 43–65 taxa. Assemblages among Marinas were highly distinct, and, key discriminants included components of biotic (alcyonarians, hexacorallians, bivalves, and annelids), as well as abiotic (sediment, bare area and shell fragments) origin. While the assemblage variation among Marinas was influenced by local environmental conditions (e.g. water motion and sedimentation rate) and pontoon material, the variation in distribution within each marina was best explained by the distance of the pontoons from the marina’s entrance (epibiotic diversity and taxa richness were lower away from the marina entrance). Knowledge on the distribution of epibiotic assemblages on pontoons is essential to identify the factors that contribute to spatial variation and encourage the design and construction of ecologically-friendly Marinas. Our findings suggest that improvements to pontoon design and layout would help to augment marina biodiversity, enhance the ecology of urbanised coasts, and mitigate development impacts.
Aina G Gomez - One of the best experts on this subject based on the ideXlab platform.
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mapping the environmental risk assessment of Marinas on water quality the atlas of the spanish coast
Marine Pollution Bulletin, 2019Co-Authors: Aina G Gomez, Paloma F Valdor, Barbara Ondiviela, Juan L Diaz, Jose A JuanesAbstract:Recreational sailing sector has an impact on water quality in Marinas. This study proposes a standard procedure to assess the environmental risk of Marinas on water quality. Risk is assessed through integrating environmental pressures, environmental conditions and societal responses (i.e. the Pressure-State-Response model). Pressures are estimated considering the main driving forces: navigation, port, dredging and external activities. State is estimated through combining the susceptibility, the ecological value and naturalness. Response is estimated through environmental management instruments and adopted measures. Managers and authorities can hierarchically classify Marinas from a multi-scale spatial framework. This tool is particularly powerful for generating local, regional or national atlases to prioritize environmental planning actions. The method is applied to 320 Marinas along the Spanish coast. This implementation confirms the usefulness, versatility and adaptability of this procedure as a tool for the environmental management of Marinas.
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atlas of susceptibility to pollution in Marinas application to the spanish coast
Marine Pollution Bulletin, 2017Co-Authors: Aina G Gomez, Barbara Ondiviela, Maria Fernandez, Jose A JuanesAbstract:An atlas of susceptibility to pollution of 320 Spanish Marinas is provided. Susceptibility is assessed through a simple, fast and low cost empirical method estimating the flushing capacity of Marinas. The Complexity Tidal Range Index (CTRI) was selected among eleven empirical methods. The CTRI method was selected by means of statistical analyses because: it contributes to explain the system's variance; it is highly correlated to numerical model results; and, it is sensitive to Marinas' location and typology. The process of implementation to the Spanish coast confirmed its usefulness, versatility and adaptability as a tool for the environmental management of Marinas worldwide. The atlas of susceptibility, assessed through CTRI values, is an appropriate instrument to prioritize environmental and planning strategies at a regional scale.
Kok Ben Toh - One of the best experts on this subject based on the ideXlab platform.
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Distribution of soft bottom macrobenthic communities in tropical Marinas of Singapore
Urban Ecosystems, 2019Co-Authors: Kok Ben Toh, Tai Chong Toh, Pei Rong Cheo, Karenne Tun, Loke Ming ChouAbstract:The establishment of Marinas alters physico-chemical conditions and affects distribution of resident epibiotic and pelagic communities along coastal areas. However, information on the soft bottom macrobenthos within and around these boating facilities in the tropics is limited. Here, we investigated if macrobenthic communities differed among three representative tropical Marinas, and whether the communities inhabiting the Marinas differed from those outside the Marinas. Ekman grab sampling of the soft bottom sediment at three Singapore Marinas – Raffles Marina (RM), ONE^o15 Marina (OMC), Marina at Keppel Bay (MKB) – yielded a total of 73 taxa from eight phyla. Accounting for temporal variations, taxonomic richness did not differ among Marinas, while Shannon index (MKB > RM = OMC) and abundance (RM > OMC > MKB) did. Macrobenthic community composition differed among the Marinas, with RM dominated by a high proportion of opportunistic species and OMC supporting species that were sensitive to pollution. The surveys also revealed that communities within and outside Marinas differed. Unlike RM which is more enclosed, diversity was higher within MKB than outside it, likely because the latter marina had a layout that encouraged flushing which maintained good water quality. The study showed that while Singapore’s tropical Marinas can support diverse groups of macrobenthic taxa, the presence of high proportions of opportunistic species suggested that pollution within the Marinas was still significant. Macrofaunal diversity in tropical Marinas, such as those in Singapore, may be promoted by designs that improve water exchange.
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Spatial variability of epibiotic assemblages on marina pontoons in Singapore
Urban Ecosystems, 2017Co-Authors: Kok Ben Toh, Tai Chong Toh, Pei Rong Cheo, Karenne Tun, Loke Ming ChouAbstract:Berthing pontoons, one of the most ubiquitous structures in Marinas, are known to provide recruitment substrate for a variety of marine biota but little has been reported on their capacity to support epibiotic organisms in tropical Marinas, and even less is known about the factors that shape their distribution in such environments. We surveyed the epibiotic assemblages on the sides of pontoons in three Singapore Marinas and examined the environmental conditions that influenced their distribution. A total of 94 taxa were recorded, with each marina hosting 43–65 taxa. Assemblages among Marinas were highly distinct, and, key discriminants included components of biotic (alcyonarians, hexacorallians, bivalves, and annelids), as well as abiotic (sediment, bare area and shell fragments) origin. While the assemblage variation among Marinas was influenced by local environmental conditions (e.g. water motion and sedimentation rate) and pontoon material, the variation in distribution within each marina was best explained by the distance of the pontoons from the marina’s entrance (epibiotic diversity and taxa richness were lower away from the marina entrance). Knowledge on the distribution of epibiotic assemblages on pontoons is essential to identify the factors that contribute to spatial variation and encourage the design and construction of ecologically-friendly Marinas. Our findings suggest that improvements to pontoon design and layout would help to augment marina biodiversity, enhance the ecology of urbanised coasts, and mitigate development impacts.
Barbara Ondiviela - One of the best experts on this subject based on the ideXlab platform.
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mapping the environmental risk assessment of Marinas on water quality the atlas of the spanish coast
Marine Pollution Bulletin, 2019Co-Authors: Aina G Gomez, Paloma F Valdor, Barbara Ondiviela, Juan L Diaz, Jose A JuanesAbstract:Recreational sailing sector has an impact on water quality in Marinas. This study proposes a standard procedure to assess the environmental risk of Marinas on water quality. Risk is assessed through integrating environmental pressures, environmental conditions and societal responses (i.e. the Pressure-State-Response model). Pressures are estimated considering the main driving forces: navigation, port, dredging and external activities. State is estimated through combining the susceptibility, the ecological value and naturalness. Response is estimated through environmental management instruments and adopted measures. Managers and authorities can hierarchically classify Marinas from a multi-scale spatial framework. This tool is particularly powerful for generating local, regional or national atlases to prioritize environmental planning actions. The method is applied to 320 Marinas along the Spanish coast. This implementation confirms the usefulness, versatility and adaptability of this procedure as a tool for the environmental management of Marinas.
-
atlas of susceptibility to pollution in Marinas application to the spanish coast
Marine Pollution Bulletin, 2017Co-Authors: Aina G Gomez, Barbara Ondiviela, Maria Fernandez, Jose A JuanesAbstract:An atlas of susceptibility to pollution of 320 Spanish Marinas is provided. Susceptibility is assessed through a simple, fast and low cost empirical method estimating the flushing capacity of Marinas. The Complexity Tidal Range Index (CTRI) was selected among eleven empirical methods. The CTRI method was selected by means of statistical analyses because: it contributes to explain the system's variance; it is highly correlated to numerical model results; and, it is sensitive to Marinas' location and typology. The process of implementation to the Spanish coast confirmed its usefulness, versatility and adaptability as a tool for the environmental management of Marinas worldwide. The atlas of susceptibility, assessed through CTRI values, is an appropriate instrument to prioritize environmental and planning strategies at a regional scale.
