Module 6

Question 1

what are the basic needs of fall and spring migrating waterfowl?

Answer 1

water, nocturnal roosts, and nutritious food

Question 2

What is a critical phase of the annual cycle of waterfowl?

Answer 2

spring

Question 3

Migration corridors and flyways follow…

Answer 3

water bodies

Question 4

What factors influence waterfowl requirements during spring migration?

Answer 4

snow, ice, and resulting decreased open water for drinking, food and roost availability, possible hyperphagia, and mortality

Question 5

What are causing recent declines in snow and ross’ geese recruitment?

Answer 5

may be due to timing of spring migration and availability of food resources at staging areas in Northern US

Question 6

Required resources

Answer 6

those that sustain migration and subsequent breeding propensity but not necessarily success (kinda like proximate factors)

Question 7

Limited resources

Answer 7

those NOT sufficiently available to meet survival and reproductive needs (kinda like ultimate factors)

Question 8

What is an example of spatially expansive science to understand food limitations and other factors influencing range-wide declines in scaup

Answer 8

lesser scaup

Question 9

What is the Spring Condition Hypothesis?

Answer 9

predicted that female scaups are not able to acquire energy or other needed nutrients for migrations and subsequent reproduction from stopover habitats in Midwest.

Question 10

What factors influence amphipods?

Answer 10

density of submersed aquatic vegetation was good influence. Sedimentation and fish were bad influences

Question 11

The decline in lipid reserves of female scaup is likely due to a decrease in the availability of foods across the upper midwest. This makes amphipods…

Answer 11

a limited resource

Question 12

Should managed wetlands be flooded during fall-winter?

Answer 12

No

Question 13

True or False: nocturnal roosts and protein are the primary habitat and food requirements, respectively, of vernal migrating waterfowl.

Answer 13

FALSE!

Question 14

Increased sedimentation in wetlands in the Prairie-Pothole region is a suggested influence related to declining populations of mid-continent lesser scaup

Answer 14

Because…
- Sedimentation decreases water quality
- sedimentation decreases amphipod abundance
- sedimentation decreases submersed aquatic vegetation

Question 15

what species exhibits a capital nutrient acquisition and breed strategy?

Answer 15

trumpeter swans

Question 16

what physiological adaptations in barheaded geese allow them to fly at great altitudes?

Answer 16

higher blood O2 affinity, higher ventilation rate in lungs, increased mitochondria in flight muscles, and larger lungs