The Experts below are selected from a list of 23622 Experts worldwide ranked by ideXlab platform
Lee R. Mcdowell - One of the best experts on this subject based on the ideXlab platform.
-
Mineral Resource Availability and Consumption by Colobus in Kibale National Park, Uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-and-white ( Colobus guereza ) and red colobus ( Piliocolobus tephrosceles ) in a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that ofnatural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake isbelow suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack of variation in sodium content among plant species and a positive correlation between high plant sodium content and secondary compounds. Despite the lack of selection for sodium by colobines, some behaviors point to a potential sodium deficiency, including urine drinking, consumption of high-sodium swamp plants, and use of mud-puddles.
-
Mineral Resource availability and consumption by colobus in kibale national park uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-andwhite (Colobus guereza) and red colobus (Piliocolobus tephrosceles )i n a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that of natural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake is below suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack
Timothy T. Werner - One of the best experts on this subject based on the ideXlab platform.
-
Unresolved Complexity in Assessments of Mineral Resource Depletion and Availability
Natural Resources Research, 2018Co-Authors: Stephen Northey, Gavin Mark Mudd, Timothy T. WernerAbstract:Considerations of Mineral Resource availability and depletion form part of a diverse array of sustainable development-oriented studies, across domains such as Resource criticality, life cycle assessment and material flow analysis. Given the multidisciplinary nature of these studies, it is important that a common understanding of the complexity and nuances of Mineral supply chains be developed. In this paper, we provide a brief overview of these assessment approaches and expand on several areas that are conceptually difficult to account for in these studies. These include the dynamic nature of relationships between reserves, Resources, cut-off grades and ore grades; the ability to account for local economic, social and environmental factors when performing global assessments; and the role that technology improvements play in increasing the availability of economically extractable Mineral Resources. Advancing knowledge in these areas may further enhance the sophistication and interpretation of studies that assess Mineral Resource depletion or availability.
Bruno Lacarrière - One of the best experts on this subject based on the ideXlab platform.
-
Mineral Resource assessment: Compliance between Emergy and Exergy respecting Odum's hierarchy concept
Ecological Modelling, 2014Co-Authors: Nadia Jamali-zghal, Olivier Le Corre, Bruno LacarrièreAbstract:In this paper, authors suggest to combine the exergoecology and the emergy concept in order to evaluate Mineral Resources, taking into account their abundance, their chemical and physical properties and the impact of their extraction. The first proposition of this work is to consider that every group of Mineral, dispersed in the Earth's crust, is a co-product of the latter. The specific emergies of dispersed Minerals are, then, inversely proportional to their abundance. The results comply with the material hierarchy as the specific emergy of a dispersed Mineral rise with its scarcity. The second is an emergy evaluation model based on the chemical and concentration exergy of the Mineral, its condition in the mine and its abundance. This model permits to assess the decline of Mineral reserves and its impact on the ecosystem. The dispersed specific emergy of 42 main commercially used Minerals has been calculated. Furthermore, the emergy decrease of some Australian Mineral reserves has been studied, as well as the land degradation of US copper mines.
-
Mineral Resource assessment compliance between emergy and exergy respecting odum s hierarchy concept
Ecological Modelling, 2014Co-Authors: N Jamalizghal, Le O Corre, Bruno LacarrièreAbstract:In this paper, authors suggest to combine the exergoecology and the emergy concept in order to evaluate Mineral Resources, taking into account their abundance, their chemical and physical properties and the impact of their extraction. The first proposition of this work is to consider that every group of Mineral, dispersed in the Earth's crust, is a co-product of the latter. The specific emergies of dispersed Minerals are, then, inversely proportional to their abundance. The results comply with the material hierarchy as the specific emergy of a dispersed Mineral rise with its scarcity. The second is an emergy evaluation model based on the chemical and concentration exergy of the Mineral, its condition in the mine and its abundance. This model permits to assess the decline of Mineral reserves and its impact on the ecosystem. The dispersed specific emergy of 42 main commercially used Minerals has been calculated. Furthermore, the emergy decrease of some Australian Mineral reserves has been studied, as well as the land degradation of US copper mines.
Lauren J. Chapman - One of the best experts on this subject based on the ideXlab platform.
-
Mineral Resource Availability and Consumption by Colobus in Kibale National Park, Uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-and-white ( Colobus guereza ) and red colobus ( Piliocolobus tephrosceles ) in a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that ofnatural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake isbelow suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack of variation in sodium content among plant species and a positive correlation between high plant sodium content and secondary compounds. Despite the lack of selection for sodium by colobines, some behaviors point to a potential sodium deficiency, including urine drinking, consumption of high-sodium swamp plants, and use of mud-puddles.
-
Mineral Resource availability and consumption by colobus in kibale national park uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-andwhite (Colobus guereza) and red colobus (Piliocolobus tephrosceles )i n a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that of natural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake is below suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack
Colin A. Chapman - One of the best experts on this subject based on the ideXlab platform.
-
Mineral Resource Availability and Consumption by Colobus in Kibale National Park, Uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-and-white ( Colobus guereza ) and red colobus ( Piliocolobus tephrosceles ) in a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that ofnatural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake isbelow suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack of variation in sodium content among plant species and a positive correlation between high plant sodium content and secondary compounds. Despite the lack of selection for sodium by colobines, some behaviors point to a potential sodium deficiency, including urine drinking, consumption of high-sodium swamp plants, and use of mud-puddles.
-
Mineral Resource availability and consumption by colobus in kibale national park uganda
International Journal of Primatology, 2003Co-Authors: Karyn D. Rode, Colin A. Chapman, Lauren J. Chapman, Lee R. McdowellAbstract:Very little information exists on Mineral nutrition of tropical, forest-dwelling species, yet Minerals are critical to growth, reproduction, and survival. We examined the Mineral Resources available to and consumed by colobus in Kibale National Park, Uganda. We combined behavioral data on black-andwhite (Colobus guereza) and red colobus (Piliocolobus tephrosceles )i n a section of unlogged forest, a heavily logged area, and a forest fragment with Mineral analysis of their foods to estimate the proportion of the diet containing specific Minerals (Mineral content). We compared Mineral content of colobus foods (natural and crops) across plant parts and among plant species. Additionally, we estimated Mineral intake of frugivorous primates in Kibale from published dietary data and our estimates of Mineral content of foods. Dietary Mineral content for all colobus groups and frugivorous species is similar despite significant differences in the Mineral content of foods. Ripe and unripe fruits are lower in Mineral content than most foods. Foods rarely consumed, such as bark, petioles, and caterpillars have high levels of some Minerals. The Mineral content of crops is low in comparison to that of natural foods. For all colobus groups of both species, sodium content of foods was extremely low and iron content was generally low, suggesting that intake is below suggested requirements, though current suggested iron requirements may overestimate physiological needs. Copper content was marginal and deficient seasonally for most colobus groups. Despite a sodium-limiting environment, only one of 8 colobus groups appeared to select sodium; however, this may be due to a lack
