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Service Description: Estimated Population Density in 2015
Full details of the methodologies used to construct age and sex-structured population distribution datasets are provided in Tatem et al (2013). In brief, data on sub-national population compositions by age and sex were obtained from a variety of sources - principally from contemporary census-based counts broken down at a fine resolution administrative unit level, though also from national household surveys where census data were lacking or outdated. These subnational counts and proportions were matched to corresponding GIS datasets showing the boundaries of each unit, and used to adjust the existing WorldPop spatial population datasets described above to produce estimates of the distributions of populations by sex and five-year age group. The datasets were then projected to the years of interest (2000, 2005, 2010 and 2015) through applying UN urban and rural growth rates, and adjusted to ensure that national population totals by age group, specific city totals and urban/rural totals matched those reported by the UN. UNITS: Estimated persons per grid square.
Credits: WorldPop ( http://www.worldpop.org.uk/ ) Coastal Population Pressure
What happens in the vast stretches of the world's oceans - both wondrous and worrisome - has too often been out of sight, out of mind. The sea represents the last major scientific frontier on planet earth - a place where expeditions continue to discover not only new species, but even new phyla. The role of these species in the ecosystem, where they sit in the tree of life, and how they respond to environmental changes really do constitute mysteries of the deep. Despite technological advances that now allow people to access, exploit or affect nearly all parts of the ocean, we still understand very little of the ocean's biodiversity and how it is changing under our influence. The goal of the research presented here is to estimate and visualize, for the first time, the global impact humans are having on the ocean's ecosystems. Our analysis, published in Science February 15, 2008, shows that over 40% of the world's oceans are heavily affected by human activities and few if any areas remain untouched. Please see supplemental online materials for more information. http://www.sciencemag.org/content/suppl/2008/02/12/319.5865.948.DC1.full
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Comments: Estimated Population Density in 2015
Full details of the methodologies used to construct age and sex-structured population distribution datasets are provided in Tatem et al (2013). In brief, data on sub-national population compositions by age and sex were obtained from a variety of sources - principally from contemporary census-based counts broken down at a fine resolution administrative unit level, though also from national household surveys where census data were lacking or outdated. These subnational counts and proportions were matched to corresponding GIS datasets showing the boundaries of each unit, and used to adjust the existing WorldPop spatial population datasets described above to produce estimates of the distributions of populations by sex and five-year age group. The datasets were then projected to the years of interest (2000, 2005, 2010 and 2015) through applying UN urban and rural growth rates, and adjusted to ensure that national population totals by age group, specific city totals and urban/rural totals matched those reported by the UN. UNITS: Estimated persons per grid square.
Credits: WorldPop ( http://www.worldpop.org.uk/ ) Coastal Population Pressure
What happens in the vast stretches of the world's oceans - both wondrous and worrisome - has too often been out of sight, out of mind. The sea represents the last major scientific frontier on planet earth - a place where expeditions continue to discover not only new species, but even new phyla. The role of these species in the ecosystem, where they sit in the tree of life, and how they respond to environmental changes really do constitute mysteries of the deep. Despite technological advances that now allow people to access, exploit or affect nearly all parts of the ocean, we still understand very little of the ocean's biodiversity and how it is changing under our influence. The goal of the research presented here is to estimate and visualize, for the first time, the global impact humans are having on the ocean's ecosystems. Our analysis, published in Science February 15, 2008, shows that over 40% of the world's oceans are heavily affected by human activities and few if any areas remain untouched. Please see supplemental online materials for more information. http://www.sciencemag.org/content/suppl/2008/02/12/319.5865.948.DC1.full
Subject: Estimated population density in 2015 and coastal population pressure.
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Keywords: Africa,ALES,CoE,GLOBIL,Kenya,Mozambique,Population,Tanzania,WWF,WWF Norway
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