Lecture 3 Biomes Flashcards
What are Biomes?
They are wasys of categorizing ecosystems that share properties.
What is the basic characteristic of Terrestrial Biomes?
They are categorized by their climate and the types of plants that can grow there.
what are the basic characteristic of aquatic biomes
The amount of moment of water, and the physical/chemical properties of that water.
How do you classify terrestrial biomes?
- You look at the Geography (varies across latitudes)
- Mean annual temperature
- Mean annual precipitation
- Predominant plants
What drives the temperature and participation of a terrestrial biome?
Climate.
this is the largest limiting factor for what CAN and what CANNOT live in a cretin biome.
What are Absolute values? and what should you look for when looking at a climate diagram
- How hot or cold it is across the year
- the range of temperatures across the year?
- The amount of rain across the year
- How variable is rainfall across the year?
What are Relative values? and what should you look for when looking at a climate diagram
- How does temperature relate to precipitation across the year? (Rainfall that exceeds the mean monthly temp = growth season)
What are the terrestrial biomes in canada?
Tundra
Boreal forests
Temperate Forests
Temperate Grasslands
What are the most important terrestrial biomes
Rain-forests and Deserts
What is Soil?
A complex mixture of biotic and abiotic material upon which most terrestrial life depends.
How ling does it take to make soil?
2,000 to 20,000 years
What is mechanical weathering?
Breakdown of rock into smaller particles from combined action of water, wind, and plants.
What is chemical Weathering?
Action of chemical processes such as oxidation. hydrolysis, and reduction.
what are the layers of soil?
O - organic
A - Surface
B - Subsoil
C - Substratum
D - bedrock
True or false:
Soil depth matters.
True.
deep soil holds more water and minerals.
What influences soil depth?
slope
weathering
parent materials (bedrock)
vegetation
What is the link being deep soil and roots?
Deeper soild = deeper roots = bigger plants
What are the two primary groups of Aquatic Biomes?
Marine (Oceans and seas)
Freshwater (Rivers, lakes, wet lands)
What is the 1st factors that is used to Delineate Aquatic Biomes?
Salinity (Or the concentration of Salt/ions within the water)
What is the 2nd factors that is used to Delineate Aquatic Biomes?
Water movement.
What is the salinity of Ocean water?
34 ppt or greater (parts of salt)
What is the salinity of Fresh water?
0-34 ppt
What dose the key word “lentic”mean?
flowing systems (rivers)
What dose the key word “lotic” mean?
Still system (lake)
