Ecosystems and Human Well-Being Biodiversity Ecosystems and Human Well-Being: Biodiversity Synthesis ecosystemshumanw05kuma Year: 2005 Aerial deposition of reactive nitrogen into natural tetrestrial eco- systems, especially temperate grasslands, shrublands, and forests, leads directly to lower plant diversity; excessive levels of reactive nitrogen in water bodies, including rivers and other wetlands, frequently leads to algal blooms and eutrophication in inland waters and coastal areas. Similar problems have resulted from Figure 3. Main Direct Drivers phosphorus, the use of which has tripled
Ecosystems and Human Well-Being Biodiversity Ecosystems and Human Well-Being: Biodiversity Synthesis ecosystemshumanw05kuma Year: 2005 Aerial deposition of reactive nitrogen into natural tetrestrial eco- systems, especially temperate grasslands, shrublands, and forests, leads directly to lower plant diversity; excessive levels of reactive nitrogen in water bodies, including rivers and other wetlands, frequently leads to algal blooms and eutrophication in inland waters and coastal areas. Similar problems have resulted from Figure 3. Main Direct Drivers phosphorus, the use of which has tripled between 1960 and 1990. Nutrient loading will become an increasingly severe problem, particularly in developing countries and particularly in East and South Asia. Only significant actions to improve the efficiency of nutrient use or the maintenance or restoration of wetlands that buffer nutrient loading will mitigate these trends. The cell color indicates the impact to date of each driver on biodiversity in each biome over the past 50-100 years. The arrows Indicate the trend in the impact of the driver on biodiversity. Horizontal arrows indicate a continuation of the current level of impact; diagonal and vertical arrows indicate progressively increasing trends in impact. This Figure is based on expert opinion consistent with and based on the analysis of drivers of change in various chapters of the assessment report of the Condition and Trends Working Group. This Figure presents global impacts and trends that may be different from those In specific regions. Forest Dryland Boreal Temperate Tropical Temperate grassland Mediterranean Tropical grassland and savanna Desert Inland water Coastal Marine Island Mountain Polar Habitat change / \ / Climate change Invasive species Over- Pollution exploitation £»>£, Driver's impact on biodiversity over the last century Low Moderate High Very high Driver's current trends Decreasing impact \ Continuing impact -*â Increasing impac
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