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Lecture

Lecture16_W13.pdf

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Department
Biology
Course
BIOL 1070
Professor
Wright& Newmaster
Semester
Winter

Description
13-03-05 Auntn oursnt andee etvse  ry  class…)   Inquiry  Case  Exam  #2     •   This  Week  –  Sat.  March  9,  10:00am  in  Rozanski  104/101     Ø  If your surname begins with the letters ABD - McK then you will write in Room 104 Rozanski Hall. Ø  If your surname begins with the letters McL - ZIM then you will write in Room 101 Rozanski Hall. •   Covers  material  in  Inquiry  Case  #2  (Evolu▯on  +  Ecology)   BIOL*1070  Discovering  Biodiversity   Week  9  –  Lecture  16   Learning  outcomes   Inquiry  Cases   1.  Organize  complex  biological  informa▯on,   Weeks  1-­‐3  1.  Invasion!  Mussels  of  the  Great   EVOLU-­‐   understanding  what  we  know  and  what  we  need   TION   Lakes  region   to  know.   2.  Explain  how  climate  change  may  impact  organisms   Weeks  4-­‐7  2.  Forest  biodiversity   EVOLU-­‐   on  different  ▯mescales  and  levels  of  organiza▯on.     TION     ECOLOGY     3.  Consider  the  long-­‐term  impact  of  climate  change   on  an  Arc▯c  carnivorous  mammal,  the  polar  bear.       4.  Name  some  arc▯c  plants  and  animals.    Explain  the   Weeks  9-­‐13   3.  An  Arc▯c  ecosystem  8◦C   EVOLU-­‐   warmer   TION   terms  endotherm  and  ectotherm  with  reference  to   arc▯c  animals.   ECOLOGY   PHYSIOLOGY     Major  Topics   Levels  of  Biological  Organiza▯on   EVOLUTION  –  The  study  of  both  adap▯ve  and  non-­‐ adap▯ve  change  over  ▯me  in  popula▯ons,  the  origin   ECOSYSTEM and  ex▯nc▯on  of  species,  and  the  rela▯onships  among   living  things.   Inquiry COMMUNITY   Case 2   POPULATION ECOLOGY  –  The  study  of  interrela▯onships  between   Case 1y organisms  and  both  living  (bio▯c)  and  non-­‐living   Inquiry INDIVIDUAL Case 3 (abio▯c)  components  of  their  environments.     ORGAN / TISSUE   PHYSIOLOGY  –  The  study  of  organism  structure  and   CELL func▯on,  including  homeostasis  and  encompassing   cells,  ▯ssues,  organs,  and  body  systems.   MOLECULES   13-03-05        What  are  the  consequences  of  an  Arc▯c  ecosystem  8°C          warmer?        CLICKER  Ques▯on                On  a  scale  of  1-­‐10,  how  catastrophic  do  you  think       the  impact  of  climate  change  will  be  on  the   Canadian  Arc▯c  ecosystem  in  the  next  100  years?           A.    0-­very  li▯le  direct  change,  very  minor  impact  on  biodiversity   B.    2-­some  change,  but  overall  only  a  small  decrease  in  diversity     Sheila Watt-Cloutier Dr. Martyn Obbard Dr. Mike Gill C.    5-substan▯al  change  to  some  popula▯ons,  but  many   species  will  adjust  and  survive      D.    drama▯c  changes  to  many  popula▯ons,  migra▯on  of  some     species  farther  north,  invasion  of  some  southern  species,  overall   What  are  your  opinions?   decrease  in  biodiversity,  some  landforms  alte    E.    9total  destruc▯on  of  the  ecosystem,  mass  ex▯nc▯on,   transformed  landscape,  invasive  species  and  new  diseases     W hhey eaer noinngc Trenaemd:?    You  and  Your  Peers!   W hhey eaer noinngc Trenaemd:?    You  and  Your  Peers!   1.  Biological  impacts   1.  Biological  impacts     2.  Poli▯cal  and  economic  impacts   2.  Poli▯cal  and  economic  impacts   3.  Aesthe▯cs   3.  Aesthe▯cs   4.  Cultural  changes   4.  Cultural  changes   5.  Other?     5.  Other?         What  are  the  consequences  of  an  Arc▯c  ecosystem  8°C   warmer?   What  we  need  to  know:   What  we  know  from  online  material  and  other:   1. How  climate  change  impacts  organisms  on     different  ▯me  scales  (Lecture  16,  17)   1.     Key  abio▯c  variables  in  Arc▯c.   2. How  climate  change  impacts  plants  and  lichens.       2.  Examples  of  Arc▯c  plants  and  animals.   (Lecture  18)   3. Physiological  responses  to  temperature  change  in   3.     How  temperature  changes  impact   organisms  at  different  levels  of  organiza▯on.     animals?    (Lecture  19,  20,  21)   4. Predic▯ng  long  term  trends  in  Arc▯c  popula▯ons.     (Lectures  22,  23)   13-03-05 Clicker  Exam  Ques▯on     Arctic fox remain active even when Arctic temperatures fall to -50ºC. Several strategies for surviving this climate are listed below. Select the physiological strategy that is correctly matched with a time scale and level of organization. A)  Arctic fox curls in a ball to reduce exposure to the ambient temperature (= chronic, whole organism response). The  Learning  Team:  Professors   impact  organisms  on   different  ▯me  scales   B)  Arctic fox fur thickness increases in autumn (= acute, organ system). C)  Arctic fox body fat content is lowest in July and highest in November (= generational, macromolecular). D)  Arctic fox reduces metabolic rate to save energy through the winter when prey are scarce (= acute, molecular). E)  Arctic fox has small ears, a short muzzle, relatively short legs and small rounded body that limits heat loss in the cold (= generational, whole organism). Time  domains  for  temperature  change   Time  domains  for  temperature  change   Arc▯c  plants  and  animals  have  lived  in  the  Arc▯c              How  would  an  Arc▯c  fox  versus  an  Arc▯c  char   ecosystem  for  thousands  of  years.    They  must  cope  
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