Midterm Flashcards
T/F the yellow warbler is an indicator species for the tundra
False, yellow warblers are found throughout the province
4 indicator species for the tundra
Hudsonian godwit
arctic willow
arctic fox
walrus
ontario is expanding northward at the rate of _ every hundred years
400 metres
when granite is exposed to heat and pressure it becomes
gneiss
What is the average daily temp in the tundra ecological zone
-6 degrees
in the tundra, most of the bird song comes from
the sky
only the slowest moving water would carry this particle size
clay
these flowers use hairs to create a greenhouse effect that generates and retains heat
labrador and arctic willow
this animal group is absent from the tundra ecological region
woodpeckers
the oldest rock in ontario is
granite
The boundary between the Tundra Ecological Region and the Hudson Bay Lowland Ecological Region is
the tree line
glaciers last scoured ontario this many years ago
ten thousand
True or false In the Tundra Ecological Region there are no trees except for very small willows (i.e., Arctic Willow) and Dwarf Birch
False
how many species are there in ontario
More than 100,000
why cant some trees replace themselves while others can
shade tolerance
what are lichens, what is their importance?
symbiotic relationship between fungi and algae, can trap particles and create a place for other living things to grow
what are site conditions
environmental conditions caused by lay of the land, soil, pH, temperature or drainage
what are the effects of geese on the tundra
dig up plant tubers
add nitrogen to soil through droppings
are herps present in the tundra, what types are there
Reptiles and amphibians, yes
boreal chorus frogs, wood frogs
what makes ontario have a rich biodiversity
size, great range of abiotic factors
succession
the change in an area from what was there to what is there, initiated by moss and lichens
_ trees are characteristic of HBL while _ trees are characteristic of Tundra
Stunted
Dwarf
this endangered species of sandpiper fattens up in the mudflats of james bay before it migrates south
red knot
T/F most HBL rivers drain freshwater into the atlantic watershed
False, rivers bring freshwater in
T/F HBL rivers rise in the spring and create elevated banks
True
T/F black and white spruce grow along the edges of HBL rivers and are habitat for boreal forest plants and animals
True
T/F there are usually two plants along the shore of HBL rivers, shrubs and trees
True
T/F many species of Tundra birds sing from the sky
True
T/F about a dozen species of subarctic shorebirds nest in the tundra
True
T/F a few species of gleaning songbirds nest in willow thickets in the Tundra
True ex. blackpoll warbler, common redpoll, american tree sparrow
T/F the majority of bird species in the tundra nest on the ground
True
T/F many bird species remain in the tundra year round because they have adaptations for cold temperatures
False
This group of plants is dominant in the HBL
Heaths ex.bog laurel, cranberry , leatherleaf
Responsible for the large amount of clay present in HBL
Tyrell sea
these plants and birds are found near rivers like the Attawapiskat (HBL)
Spruce grouse
orange crowned warbler
butterwort
sticky asphodel
this physiographic region is characterized by lots of water, flat terrain, discontinuous permafrost and relatively young rock
Hudson Bay Lowland
T/F limestone and other sedimentary rocks underlie lowlands
True
T/F the canadian shield rocks are among the oldest in the world (1-3 billion years old)
True
Hcl poured on limestone results in effervescence because CO2 is produced in the reaction
True
T/F igneous rocks are soft and are rich in minerals such as calcium
False, they are hard rocks
when granite is metamorphosed it becomes gneiss
True
A halophytic plant
tolerates salt ex. seaside lungwort, goosegrass
T/F lichens are dormant organisms growing in the Tundra
True
T/F the main food of woodland caribou in the summer is goose grass
False, they eat lichen
T/F dwarfism is a characteristic of plants growing in the tundra
True
T/F willow ptarmigan are one of the most northern grouse in the world and have fully feathered feet for warmth
True