Global threats to human water security and river biodiversity pdf

Global threats to human water security and river biodiversity article pdf available in nature 4687321. Appropriation of fresh water to meet human needs is growing, and competition among users will intensify in a warmer and more crowded world. A conceptual diagram of global threats to freshwater ecosystems. Global threats to human water security and river biodiversity nature.

Threats to freshwater biodiversity in a changing world. No basinwide spatial conservation planning has been attempted to date, and the importance of coordinated conservation planning for the niles biodiversity remains unknown. Evaluation of their combined or synergistic effects is thus essential for adequate assessment of the consequences of planned water resource developments. Global threats to human water security and river biodiversity.

Conservation of freshwater bivalves at the global scale. Stressors associated with impoundments and flow depletion are the clearest sources of biodiversity threat by directly degrading habitat, while negligibly affecting human water security. Threats and constraints potato alone providing 60%. Human impact on worlds rivers threatens water security. A full description of the data development is provided in the supplementary information available on the nature website to view the data interactively, please visit the interactive mapping tool global maps of incident and adjusted threat. Water security research thus incorporates and extends key aspects of integrated water resources management. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple. Nature 467, 555 561 2010 in this article, the full present address for author p. Pdf global threats to human water security and river. These results highlight the diverse and unique sets of stressor impacts confronting. The present paper revises freshwater bivalve diversity, conservation status and threats at the global scale and discusses future research needs and management actions.

Freshwater biodiversity is the overriding conservation priority during the international decade for action water for life 2005 to 2015. At risk are the water supplies of nearly 80 percent of. These threats, combined with increasing demand for water resources, exacerbate the sustainable development challenge. Freshwaters, especially running waters, have been impacted globally by suite of pressures among which pollution, overexploitation, physical alternation and. Request pdf global threats to human water security and river biodiversity protecting the worlds freshwater resources requires diagnosing threats over a broad range of scales, from global to local. Almost 80 per cent of the worlds population is at high risk from threats to water security and 65 per cent of river habitats are under threat. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security. Vorosmarty cj1, mcintyre pb, gessner mo, dudgeon d, prusevich a, green p. Human pressures on freshwater resources have seriously reduced the security of water for people and river biodiversity across the world, according to a recent study.

This is not just about saving tigers and pandas biodiversity is declining worldwide and every day. This page will automatically redirect to the new ads interface at that point. Current human threats to freshwater ecosystems include rapid infrastructure development and landuse change, inefficient water use and overabstraction, and pollutants. Physicochemical and biological characterization of groundwater. The importance of wetland face biodiversity and water security problems. A case study of auraiya district, uttar pradesh, india. Human water management strategies can be detrimental to wildlife, such as migrating fish. Assumptions, challenges, and future directions in cumulative impact analysis. Request pdf global threats to human water security and river biodiversity protecting the worlds freshwater resources requires diagnosing threats over a. Multiple threats imperil freshwater biodiversity in the.

The water sector therefore should have a direct interest in safeguarding biodiver. Land for agriculture and animal grazing has come to occupy about 40% of the planets icefree land. According to nature 2010, about 80% of the worlds population 5. Multiple environmental stressors, such as agricultural runoff, pollution and invasive species, threaten rivers that serve 80 percent of the worlds population. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple stressors and accounts for downstream impacts. Pressures on rivers threaten human water security and biodiversity. Unsurprisingly, then, there are virtually no places on earth where the threat to human water security is high but the threat to biodiversity. Our focus is on rivers, which serve as the chief source of renewable water supply for humans and freshwater ecosystems2,3. River ecosystems are under threat from various human activities, leading to considerable changes in sediment delivery and flow patterns, decreasing water quality, and loss of biodiversity 1. Also, about 30 mammalian and bird species are used extensively, but just 15 of them account for over 90 per cent of global livestock production. Water security affects human wellbeing both directly and indirectly, through its effects on biodiversity. Water and biodiversity 1 introduction the links between the water sector1 and biodiversity involve both the impacts of the sector on biodiversity and the benefits the sector can receive from the ecosystem services provided by biodiversity. Ecosystem collapse threatens human welfare on a global basis. Linking freshwater fishery management to global food.

We find nearly 80% of world population is exposed to high 7 threat. Navigating the complexities of coordinated conservation. Human impact on worlds rivers threatens water security of 5 billion a report published in the journal nature shows how 23 different human influences, ranging from dams, pollution and the introduction of alien fish, affect water security and biodiversity. The worlds rivers are so badly affected by human activity that the water security of almost 5 billion people, and the survival of thousands of. The water security is a shared threat to human and nature and it is pandemic. The earths limited supplies of fresh water and irreplaceable biodiversity are vulnerable to human mismanagement of watersheds and waterways. Biodiversity loss and the global water crisis a fact. The river nile flows across 11 african countries, supporting millions of human livelihoods, and holding globally important biodiversity and endemism yet remains underprotected. We made projections of the responses of 363 fish species within the indoburma global biodiversity hotspot to the separate and joint impacts of dams and global warming. This essay explains why freshwater ecosystems are global hotspots of biological richness, despite a panoply of interacting threats that jeopardize biodiversity. Here, we derive a gridded global map of riverine fisheries and assess its implications for biodiversity conservation, fishery sustainability, and food security. Rivers maintain unique biotic resources and provide critical water supplies to people. Mcintyre was inadvertently missing from the bottom of the page.

River biodiversity and our water security are in serious trouble, according to a comprehensive survey of waterways released yesterday. Pdf global threats to human water security and river biodiversity. We present the first global synthesis to unite human and biodiversity 5 perspectives on water security using a spatial framework that quantifies multiple stressors and 6 accounts for downstream impacts. We find that nearly 80% of the worlds population is.

The interaction of human population, food production, and. Freshwater systems are endangered by the activities of a rapidly growing global population and, increasingly, the. Impacts of dams and global warming on fish biodiversity in. Notwithstanding the best intentions for the global implementation of biodiversity conservation, escalating human stressors continue to drive extinctions, wild species population declines, and habitat destruction 4449. One response to global threats to human water security and river biodiversity maps and data agrobiodiverse october 3, 2010 at 1. Catches increase with river discharge and human population density, and 90% of global catch comes from river. Combined impacts of global changes on biodiversity across.