380 likes | 529 Views
FOR Q & A. CLIMATE STABILITY. Changing weather patterns Volatility Wider swings from norms Security of investments & Economic stability. TEMPERATURE PRESSURE WIND WEATHER. TRENDS IN VARIANCE. WEATHER Prolonged droughts Rains> 2”/day Wide swings
E N D
FOR Q & A
CLIMATE STABILITY • Changing weather patterns • Volatility • Wider swings from norms • Security of investments • & Economic stability
TEMPERATURE PRESSURE WIND WEATHER
TRENDS IN VARIANCE WEATHER Prolonged droughts Rains> 2”/day Wide swings Timing, intensity and location of precipitation T CLIMATE 1900 1940 1976 2000
FRESHENING OF THE ARCTIC Hoerling and Kumar: Science 2003 January 31; 299: 691-694
WEATHER ANOMALIES, TRAVEL & TRAUMA • WIDER SWINGS IN WEATHER • Hurricane Floyd after ’99 drought • Severe winter after milder • Fog, Ice Storms & Road Travel • Floods & Mudslides • Ice Instability, Heavy Precipitation & Avalanches • Infrastructure Damage and Water Q&Q • TRADE, TRAVEL, TOURISM STORM OF 2003
Temperature Dependence of Plasmodium Extrinsic Incubation Period Tempmin = 16oC n= No. of degree-days required Temp — Tempmin Number of days, n a b/a = 0.5 b c d/c = 0.75 d +2oC +2oC 15 20 25 30 Temperature, oC
GENETIC SHIFT IN PHOTOPERIODIC RESPONSE CORRELATED WITH GLOBAL WARMING --Bradshaw & Holzapfel, PNAS 2001 • Wyeomyia smithii (pitcher-plant mosquito) • Southern phenotype • Shorter daylengths for diapause • Later onset of winter
The Geographic Distribution of Japanese B Encephalitis Family NYC 1999
WEST NILE VIRUS -CDC
Projected Aug 2003 May 2003
WNV and DROUGHT: CASE REPORTS Romania 1996:Neurological disease – Hundreds, Fatalities 17 . Prolonged drought and heatwave. Bucharest cases concentrated in blockhouses over aging sewage system where C. pipiens was breeding in abundance. Volgograd 1999:Hospitalized 626, Meningoencephalitis 84, Fatalities 40. Followed a drought. Israel 2000: Serologically confirmed 417, Fatalities 35 Drought across southern Europe and Middle East. C. pipiens identified as a vector. US 1999: Neurological disease 62, Fatalities 7, Sequelae >½ . Severe spring/summer drought, mild winter and 3-week July heatwave. US 2002:Human cases 3737, Fatalities 214, 43 US states, DC and 5 Canadian Provinces Severe drought West and Midwest. Absence of snowpack in the Rockies.
Since 1976 El Niño Events Have Increased in Frequency, Intensity & Duration El Niño
REGIME SHIFT Chavez et al., Science 2003; 299: 217-221
THE ARCTIC NADW “pump” 20%
COASTAL MARINE ECOSYSTEMS • PRESSURES ON REEFS • Nutrient overload – urban, rural, air-borne • Loss of wetlands – “Nature’s kidneys” • Warming and weather extremes • Diseases of sea urchins - reef cleaners • Overfishing – reef cleaners
HEALTH CONSEQUENCES • Red Tides: PSP, ASP, NSP • Fisheries & nutrition • Salinization • Cone snails & medicines • Biophilia & mental health
OIL LIFE CYCLE COSTS Harm Marine Mammals Shore birds Fisheries Consumers Livelihoods Spills & Leaks Exploration Extraction Transport Refining Transport MERCURY Air Pollution Eutrophication NOxs Acid Rain Combustion Warming Oceans Coral Reefs SLR EWEs Melting Polar Ice Climate Change
CLIMATE CHANGE & ENVIRONMENTAL JUSTICE Oil-related Extraction: Nigeria, Ecuador, Mexico Refining & benzene: locations and communities Air pollution & inner city truck routes Extreme Weather Events Economic inequities Vulnerabilities – coping, adaptation, restoration, prevention, public health infrastructure But no nation is immune Mozambique
ECOLGICAL AND HEALTH CONSEQUENCES OF INFECTIOUS DISEASES Predators WNV & Raptors Rodents: Lyme, Hantaviruses, Leptospirosis Scavengers, Decomposers Vulture die off in India Dogs: Rabies Forest Pests and Pathogens Water Q and Q, Vulnerability to Fires Coral Bleaching and Diseases Salinization, Fisheries & Nutrition
ECOLOGICAL DYNAMICS & DISEASE FUNCTIONAL GROUPS – diversity and “redundancy”of predators, prey, competitors, recyclers, N fixers r-strategists:weeds, insects, rodents, fungi, bacteria, viruses - opportunistic, pioneering species. Huge broods, rapid generation times, good dispersal mechanisms, good colonizers of disturbed environments. “Generalists.” K-strategists:predators - large bodies, small broods, reproduce later in life. Many are “specialists” and good competitors in stable environments.
Coral Bleaching: Warming and Microbes Vibrio shiloi & V. coralyticus -infection and immunity are temperature-dependent -optimal infection and lysis at 29ºC release of zooxanthellae ENSO
Regime Shifts THE PACIFIC Warm West, Cold East Hoerling and Kumar: Science 2003; 299: 691 Chavez et al., Science 2003 January 10; 299: 217
GENETIC SHIFT IN PHOTPERIODIC RESPONSE CORRELATED WITH GLOBAL WARMING--Bradshaw & Holzapfel, PNAS 2001 • Wyeomyia smithii (pitcher-plant mosquito) – • has shifted toward southern phenotype • -- Shorter daylengths (southern) to cue • for diapause, with delayed onset of winters • Fastest evolutionary response has • occurred in northern populations • (reflecting TMINs in Boreal latitudes) Red squirrelsgive birth 3 weeks earlier, corresponding to the earlier arrival of spring. Change genetic in origin – squirrels that breed earlier benefit from better access to food and territory, then pass on their early-breeding preferences to the next generation. -- Proceedings of the Royal Society of London B.
PACIFIC ANOMALIES ASIA AFRICA AMERICAS AUS WARM WEST COLD EAST Hoerling and Kumar: Science 2003; 299: 691