Lecture 19 Flashcards
T/F: clam shells don’t contain calcium
F: would effervesce in reaction with HCl
Classify clam shells by their shapes (2):
- Round; macoma
- Oval/elliptical; hyalella
Issues with forest fragmentation (6)
- Habitat is too small
- No forest corridors for travel
- Lack of recruitment (new members can’t replaced those killed by disease, etc.)
- more exposure to bird parasites
- increased predation
- wild turkeys; they negatively impact the survival of ground-nesting birds
Brown-headed cowbird + brood parasitism
- Use other birds’ nests to lay eggs
- Will break other eggs if birds abandon baby cowbirds
Animals that benefit from forest fragmentation (5):
- Birds of prey
- Fossorial animals
- White-tailed Deer
- Shorebirds that nest in fields
- Birds that feed on crops (e.g. American Crow, Ring-billed Gull)
This bird nests in ploughed fields b/c they resemble tundra habitats:
Horned lark
T/F: birds like Lapland Longspur, Snow Bunting, and plovers forage in grazed fields while migrating
True
These birds live in field habitats, since they resemble grasslands (2):
- Savannah Sparrow
- Bobolink
What are fallow fields? Name an animal that benefits from them.
Occur when farmer’s fields go “wild” (i.e. they stop tending to them)
Meadow voles
Name two animals that hunt meadow voles.
- Red fox
- Coyote
How do eastern coyotes differ from those in the west/prairies?
More wolf-like due to mating with wolves
When and where did Eastern Coyotes first arrive in ON?
Around 1900s, through western ON (Rainy River, Lake of the Woods)
Non-native plants in fallow fields (5)
- Dandelion
- Blueweed
- Chicory
- Queen Anne’s Lace
- Oxeye Daisy
Non-native animals in field habitats (3)
- Grey Partridge
- WIld Turkey
- Ringed Pheasant
Alvar
- Rare habitat in GLSL
- Limestone “pavement”
