PLEASE ANSWERS QUESTIONS 5 AND 6. Shape Outline Replac llenar)??] Arrange Styles

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PLEASE ANSWERS QUESTIONS 5 AND 6.

Shape Outline Replac llenar)??] Arrange Styles. @shape Effects ?-Select , Convert to SmartA rt, Font Paragraph Drawing g/ Editing ave disabled.Reactivate Activity 1 (Field): You are studying 2 species of lizards in the genus Sceloporus: S. occidentalis and S. graciosus, You want to predict their future distributions under a projected 3°C rise in temperature. You go to the White Mountains of Arizona and conduct transect surveys for both species from the base to the summit of Green's Peak. From that data, you construct some predictive models. S. occidentalis S. graciosus Directions: From your transect surveys you have found the present ranges of both these species on Green's Peak (see slide 3). First, fill in the table on slide 2. Then, use Red (S. occidentalis) and Blue (S. graciosus) brackets to predict their FUTURE distributions under a 3°C rise in temperature. Note that S occidentalis occurs at temperatures up to 55°C. NOTES COMMENTS

Explanation / Answer

Question 5- (d) All of the above

In the mechanistic model, species with a narrower thermal range for activity are both predicted and observed to have more restricted distributions. Incorporating constraints on habitat and elevation further restricts species distributions beyond as that are thermally suitable.While climate envelope models generally outperform mechanistic models at predicting current distributions, the performance of mechanistic models improves when incorporating additional factors. In response to a 3 °C temperature warming, the projected range predicted by the mechanistic model vary between species according to trait differences and are of a greater extent than those predicted by climate envelope models.

Explanation of option (c)-

As expected, species with the most southerly restricted ranges U. graciosus have the highest minimum voluntary temperatures. The species with southerly restricted ranges are less distinguished by mean and maximum temperatures than by minimum temperatures. The mechanistic model predicts that the thermally suitable ranges will respond individualistically to a 3 °C warming due to differential thermal breadth and metabolic rates.The predicted percentage change in range size is not a simple function of initial range size. I examined the percentage range expansion for the two species that were initially predicted to occupy less than 90%of the prediction area to allow the potential for range expansion. Although the distributed species do experience the greatest range expansion, the proportional range expansion varies considerably between species. The species with the largest proportional range change is S.Occidentalis and would outcompete S.graciosus.

Question 6 - option (b)- S. graciosus

REASON-

Limiting climate change to a 2-degree Celsius (3.6 degrees Fahrenheit) rise in temperature – would still nearly double global extinction risks, . Today, roughly 2.8 percent of species around the globe face a risk of being wiped out; a 2-degree rise increases that risk to 5.2 percent.

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