09-30-08AdaptEvol

09-30-08AdaptEvol - We now have 304 students enrolled in...

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We now have 304 students enrolled in this class. If you plan to drop ENVS24, please do so ASAP. For those still wishing to enroll, please see me after class. September 30: October 2: Course Website http://ic.ucsc.edu/~janowash/envs24/ Access: envs24 Password: ecology (NOTE LOWER CASE)
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Section Assignments (all sections 70 minutes in length) A Tues 9:00 ISB221 Diana Stuart B Tues 10:30 ISB221 Diana Stuart C Tues 2:00 ISB221 Lucy Lynn D Wed 12:30 ISB221 Jorge Torres-Ortega E Wed 2:00 ISB221 Jorge Torres-Ortega F Thur 9:00 ISB221 Breanna Caton G Thur 10:30 ISB221 Breanna Caton H Thur 2:00 ISB221 Lucy Lynn I Fri 9:30 ISB221 Leighton Reid J Fri 11:00 ISB221 Leighton Reid
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More on Your Hypothesis Paper Due the Week of October 27 in Section Observation: DragonFies are often seen Fying in tandom. Hypothesis: DragonFies in tandem during Fight experience a decreased likelihood of predation Null Hypothesis: DragonFies in tandem during Fight DO NOT experience a decreased likelihood of predation Testing the Hypothesis: 1) Observe dragonFies that are single and in tandem and determine rates of predation. Who gets eaten more? 2) Create a large outdoor cage. Introduce predators and dragonFies that are single and in tandem. Who gets eaten more? 3) Choice tests: Offer birds a choice between single and tandem dragonFies. Which do they prefer? Tandem DragonFies
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Pigeons and Doves - Drinking Mourning Dove Band Tailed Pigeon Rock Dove - Introduced - Pigeons and doves are reported to be the only North American birds that can drink water without lifting their heads (Sibley) - Why? Perhaps because they drink 15% of their weight in water each day? - Hummingbirds imbibe nectar by a different mechanism…
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California Amphibians Found this Weekend in Mendocino County Clouded Salamander ( Aneides ferreus ) - arboreal species that can be found 40+ m in mature redwood and ±r trees - square toes (and a good runner!) - species is threatened throughout its range from logging Sierra Yellow-Legged Frog ( Rana sierrae ) - Candidate for endangered species status - Once the most abundant amphibian in the Sierra - Gone from >90% of its habitat - Disease, trout predation, habitat destruction….
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Major divisions of life on Earth “The Cast of Characters” Evolution = Genetic change over time (genetic variation + selection pressure = evolution)
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What about Viruses ? All described species on Earth are
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This note was uploaded on 10/20/2008 for the course ENVS 24 taught by Professor Washburn during the Fall '07 term at UCSC.

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09-30-08AdaptEvol - We now have 304 students enrolled in...

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