Biogeography Flashcards
Kelp is the only plant that has evolved to live fully in the ocean; true or false
False; sea grass
Larger Islands:
Are more common, can support more species, and have more biotic and abiotic features.
Common invasive species include
Rodents, Snakes, Pathogens
In the 1950s, _____ would allow us to produce maps revealing many features under water such as sea mounts, trenches, atolls, mid-ocean ridges, and continental shelves.
Sounding
Oceans can be divided into ________ based on elevation: the Abyssal Plain and the Photic zone
2 distinct levels
Earth’s largest and emptiest ecosystem
Abyssal plain
Most life in the ocean must cling to the ____
coastal continental shelf region
Occurs where members of the same population become divided by some geographical obstacle, evolve apart, only to come back together later as two completely different species
Ring Species
There is NOT a geographical separation between ocean ecosystems; true or false
True
The lack of sunlight in the Arctic can cause sea creatures to migrate ___ towards temperate latitudes
South
Upwelling decreases the amount of nutrients being stirred up in the oceans; true or false
False
The oceans cover approximately 71% of Earth’s surface; true or false?
True
The Arctic Ocean is the shallowest of all oceans and has an abundance of photosynthetic organisms that grow on the continental shelf region there; true or false
False, the Arctic Ocean is the shallowest however does not have an abundance of photosynthetic organisms that grow on the continental shelf region
The lack of sunlight in the Arctic regions causes sea creatures to migrate north to where the sun still shines; true or false
False, they migrate south
Coral is considered to be an animal; true or false
True
_______ Islands contain more Species than ____ ones
Larger…smaller
_____ between habitats and a source of colonizing species affects species richness
Distance
When dealing with Rate of Colonization and Rate of Extinction, _____ is where the lines cross, when the rate of colonization is equal to the rate of extinction
Equilibrium
Why are islands subject to invasive species?
Many species have evolved into specialists, less interaction with other species = less defense, species can lose abilities needed for survival, ex. flying.
The ocean covers __ of the Earth’s Surface
71%
Kelp provides marine life ____.
Niches
____ is the productive base of the entire ecosystem.
Kelp
The only way to really distinguish between different marine environments is to look at their ___
Primary producers
Kelp cannot grow in tropical waters due to their lack of ___
Nutrients
____ can both eat and photosynthesize, giving them a competitive edge over Kelp.
Coral
____ is the only plant that has evolved to live fully in the ocean.
Sea grass
Why do more distant islands have fewer species?
distant islands can only be colonized by species with the best dispersal abilities
___ are microscopic organisms that float in the water column seeking in the sunlight to produce energy.
Phytoplankton
___ will eat the phytoplankton
Zooplankton
Phytoplankton cannot photosynthesize without sunlight; true or false
True
