Current Issues Environ
Current Issues Environ ESP 010
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This 8 page Class Notes was uploaded by Amber Homenick on Tuesday September 8, 2015. The Class Notes belongs to ESP 010 at University of California - Davis taught by Staff in Fall. Since its upload, it has received 34 views. For similar materials see /class/187484/esp-010-university-of-california-davis in Environmental Science & Policy at University of California - Davis.
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Date Created: 09/08/15
October 3 2007 Announcements Check ppt or pdf le from each lecture along with lecture supplemental le Practice quiz questions lecture objectives reading material osted there Example questions will start appearing on the website ALL exam questions will come from this pool of questions BayArea 7 San Francisco Huskies 5 great things to do this week 7 Oakland Bumbers EWE EV EDW E S 1 How many people were there on earth whe 7 San Juse Elush Babies you were born n he 7 Lafayette Diablus mm lempapexpa ined weMem mm 7 Sae Planetiers 39 39 7 7 5mm Whiners mme 5U 239 WWW mrf 50 Cal 3 Have the salmon come in yet Culienllssuesmtli gt VisitNimhusHmcheryMW LA Ducts Fatima 7 DEX my 4 Fall comes In nusmm iivaL Law SL0 MFDE S gt Emuylhe smell utdecay and termentaliun vr A f 5 Heara lec current en 39 ntal issue 7 Santa Barbara Green ivmura 5mm 1 Joel Reynolds ehlerAlumniCenter nameemems J Lee em October 3 2007 7 quot 39 mm A Human Population gOooyi r U22 The two worlds of population growth Demographic Transition Accumpaniws Ecunumi ard Suciai Develuprienl m w w g to E s E o a 2 e 30 39 g a E g Developing a 3 countries 2 g i a r a 2 g i Developed 5 High twin rm mm V mines E lallinudeaih a in 1950 i as 25 z m w quotNAM Year m9 Gram Demographic transition is mcxt tk happening around the world quot quot 39 9 ller Wm hm Age Simcmre dia Newmanquot nae5 42 The World39s Largest Gnunlrles mum vumm Counl y quotIliums Oounvy mum 39r I nk i aiT The outcome of growth hmwtation programs MHummmumnnnm mmquot mmmm Chma appears to be on track to contro grow an perhaps even reduce popwahon aze But wxm Bead and economic conse u n 5 a m Mm MM Ebri km orkEimc Choking on Gram 39 Swim rquot hvuwh Wu um C wm39 Mum mm up Ely New urkf mts 39anplaandpianetnel ple and papulal mn pressme Imwwmmmmmwwwymwwlmn nwmwlmmummwnmuwr wme m no no mo mmwnmummw Wm mm um ENV RONMENTAL I NEWS NETW y sruomw39v MWMu mm a Other bits in the news Environmental degradation surrounding re Jgee camps near Dar Jr LA Times USCanada Border mine MSNBC Going solar Japan NP West Sacramento Sac bee Cairo Conference 1994 A world summit on population An accord was reached and signed by 179 ions 7 Reduce fertility te sluvvpupulatiun grthh 7 inerease Education Especiallyfurwumen 7 ruvidE rn nsrerrepre uetive neaitn and reproductive eneiee eentra eeptiun internatienai eeeperatien u 7 er GNP dunatiun rer Wurk k w l 139 11 hr min Global programs to create a stable human population Implementing the goals ofthe Cairo Conference UNFPA UN Population Fund FAO UN Food and Agr39 lture a Program NGO39s Nongovernment organizations Measures to limit population growth Globally UN incentive programs 7 Strivestu pruvldE reseureeste raeiiitate luvv fertility eneiees 7 Strangest measure pussible Tne UN ean link assistanee te partieipatien in pupulatiun pregrarns Nationally limit immigration 7 Must ertne developed Wurld nas severe lirnitatien te immigratiun 7 Seeiai controversy sneuid us strengthen er leesen tne limits te irnrnigratien What is Human Carrying Capacity p vedidians mun mums 1 l 7 e msu 175m IBSEI 195m Year predictmn was made Leeuwenhoek 1679 Estimated maximum human population to be 134 billion Extrapolated density of Holland which he p esumed to be saturated to the rest of the world Just about dead on the median estimate today X Note thr spECl Epredtchtins arentitlmpti anl me Elsim haw they Living off resenes arguments Ehrlich et al 1993 955 billion We are currently maintaining agricultural yields at the expense of fossil fuels and topsoil Yield without these would be much less Pimentel et 94 3 billion Using onl to meet the needs of the world A common estimate 8 billion Most people living low on the food chain vegetarians Most arable land in agriculture Modest energy subsidies Single resource constraints 0 DeWit 1967 1027 billion All photosynthetic potential of earth placed into plant growth and all of this plant growth set to feed humanity Satirical projections Fremlin 1964 1000000000000000000 120 people sq m body heat alone would raise the temperature to 1000 C this would challenge our ability to cool earth Buildings would melt waterwould boil off and we would all die a Bottom Line We do not have sufficient forecasting ability of technology to know when we hit the ceiling for energy that can be applied toward human consumption We know there is a ceiling Cessation of human population growth will be because a Humans choose zero population growth or Humans lackthe abilityto stem a population decline I ie disease war Bottom Line The level of a sustainable human population is largely a matter of quality of life Many more people can be supported through existing energy supplies if we do not Use energy for transportation Use electricity at all eat Should we be concerned about human population size Quality oflife Human Sustainable quot123113quot uman lie Abilityto maintain global biodiversity and habitats won respect to sustalrlablllty ofthe nurnan endeavor populauon gronttn rate and populauon slze are only part of the plcmre per caplta consurrpuorr ls the other m a a r a wnat ls your ecologlcal footprl nt7 r r I Consumption FOOD Production globally continues upward Productivig per acre has stopped increasin in US but many regions continue to improve Fewer acres in production in US and Europe than 100 years ago a 3 Meat is expensive Every 16 k ofgrain fed to an animal in a feedlot produce1 kg of edible meat Eating grain directlyE sults in 21 times more calories and 8 times more protein than meat consumption and Sustainable Resource Use using resources in ways that do not diminish them Resources anything that is useful for creating wealth or improving our lives Sustainable development meeting the needs ofthe present without compromising the ability of future generations to meet their own needs Arewe dumg than Review Pupulatlun nas reaeneo EB bllllun e rne yorlo sonoly yarres Mn respeotto densltvr populatron orontn ano tne trnrno at oenoorapnretranstron Furthe purposes ottnrs elasswe wlll assurnetnat opulatron rnerease nasto reaen sorne staorlrtyewe can t oou le toreyer Pupulatlun eontrol rstrauontwrtn suclallustlce lssues Manytaotors cuntllbutetu lesstnan maxlmum reproouotrye rate reproouotrye enoree ls one ottnese reasons Demugvaphlctvansltlun naturally napp ns as people snrtttnerr lryelrnooostrorn rural agvlcultule to uroanloos Tne u nuwthlnks populatron maystablllze at lt lu bllllun Tneworlo rernarns oornrnateooy yuung people Some key related issues Thomas Malthus and An Essay on the Principle of Populations Paul Ehrlich and The Population Bomb Garrett Hardin and The Tragedy of the Commons Wackernagel and Rees and The l Ecological Footprin Example Quiz questions Recent trends in human population suggest that it is i e increasingliriear e il icl easil ig at a rate that l5 increaSing e decreasing because or an aging population structure c easing more than linearly but decreasing in the rate that it l5 7 Closing in on a carrying capacity threshold The total population that can be sustained by the environment of a species is called the rue False Most A 39ican countries are not anywhere near completing the process of demographic transition in human population growt Learning objectives for human population segment You should be able to Dese be the including the geography or wealth and education rnits oeouiatiens and carrying capacin e Explain demographic transition e Explain oeouiatien doubling tirne anu recenttrends in oeouiatien ueuoiing tirnes Understand rerees driving oeouiatien growth and changes in growth rates Enuneiate arguments furand againstrunuing the UNFPA