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Monday, April 10, 2017

CH9

  • uislands bc gov law that engoarged farmers to deforeest but scientists saw oppurtunity for controlled experiment 
  • fragmwntologist
  • 50 000 000 square miles are ice free
  • half of his land to cropland and pasture cities hopping mals etc
  • 3/5 of remaining is forrest 
  • rest is high mountains tundra or desrt
  • im confused about why anthromes are a better clasification than bioms
  • one road becomes branches of deforestation
  • ring and fling band and release
  • for first year popoulation of birds i deforested raea  join and bigger
  • keeps on dropping (number and variety)
  • bc more mpetition for fewer recorces
  • keps on going down
  • islands tend to be specis poor
  • smaller populations ae morevunerable to hance
  • smaller popultaion means that there is a bigger effect of mall casue s on the population
  • smal populations lead to local extintion
  • also corerates with speciation
  • many species in relsation with army ants
  • the tropics were home to as many as thirty million species of arthropods.
  • much more than number of bird or mammal species
  • very fast species lost due to habitat rduction
  • ther is  lag to the process
  • hard to know but bc populations remain but will eithersurvive or die iff due to chance
  • if we cut the forrests up we wil lose bith flora and fauna
  • arnt enough colonie sof ants to support birds when some go into satatr y phase
Ch 10

  • bwst tie to take bat po is in winter bc they hibernate
  • white stuff all ovr bats
  • sae substance was found i oerbat caves 
  • affected the bats notes
  • Geomyces destructans.
  • whithout human help hard for spicies to cross pysical oandrays
  • darwin found tat ocean wernt as uch as problem as hethoght
  • realized that continent smust have shifted
  • causes them to be itchy and use up fat storse that would be used for hibernation
  • loose moisture through skin 
  • magority o f ariving species
  • if it sucides pouatioon expans rapidly
  • only a fe invasive spevies will get tobe sicessul
  • invasive spieces either fillor take ver niche
  • if eithe rthe ost or parasite wants to survive ne has to adapt to beat the other
  • chestnut trees were wipe out when resitenat japanese trees wer brought 
  • incasesive specis are a hugeee e problem
  • we are recraeting pagea like connetions
  • we are the moset succeful invasive pseccies
  •  eventually if this keps upbiodiversity will go away
  • white nose eveloved in europe along withother species
  • V
CH11

  • only 5 specie of rhino still exist
  • lonly not pack animals
  • rhinos being reescued inot into captviity is simply not working 
  • used to be large birds that filled niches of derr
  • darwin concluded that over hunting caused so,e global extinctions
  • 3 pulses of exinction centered at diffrent places worls=dwide
  • mans arival is only possible eason
  • climate change would lead to a megea fsuna extinction
  • large ani,als tend to reproduce lowly
  • humans would just have to be avg for an wieot to take place like it did

12

  • neadathral bones turn up all over te place
  • consitint they seeem to be vansihing
  • lots of causes ar cited
  • thier bad luck was us
  • humansarived 40 000 years ago
  • when they made thier way nto a reigon nethndls disapeered
  • people are aruond 4% neandrathal
  • humans breeded with neandrathals, and as a result neadrathalgnes were added to tthe pool
  • lots found in neander valley
  • they could probably paas for humans
  • enzymes destroy dna when die
  • depending on country more ir less simiar to nendrathals
  • before replacing had ex
  • non human apes re clever
  • social cues are stronger in humans
  • easier to be tght if human
  • could b ea s simple a cause as 1 mutation
  • must have bred with denisovans also
  • one main suspect for earyly himi species
  • other primate spoulations ar declining fast
  • we will be last great apes
  • neaantrathal used tools
  • lacke asthetic mutation

13
  • saved the dn of the po'uli
  • scintests preserve whatof left of species by frezing tels
  • humans have evidence but refuse to act
  • we can still revitalize species population
  • you can support presvationindrctly by joing funds for wildlife

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