Biodiversity Flashcards
Subtidal Kelp Bed communities are the —-primary productivity of all community’s on the planet
highest
-also provides shelter for species
-and provides protection
Greatest species diversity of vertebrates on plants
highly efficient recycling of nutrient
Coral reefs
zooxanthellae
Difference between the Arctic and Antarctic?
Arctic is ocean surrounded by land has great diversity becuase of large rivers flowing into ocean, have terrestrial predators.
Antarctic island, very small diversity-penguins, have water predators-orca
Dystrophic
tea colour lakes low productivity
Intermediate productivity lakes
mesotrophic
Eutrophic
high productivity lakes
Tundra
3-6 months darkness
permafrost-frozen all year deep ground
shrubs
lots of insects
Temperate rainforest
-taiga or boreal forest
west coast
ancient trees
Tropical forest
6 strata
-a) discontinuous sympodial growth not monopodial(spruce tree shape)
b) continuous lower trees
ground and tall trees connected by vines- Lianas
Amount of nitrogen in terrestrial community’s
arctic most
taiga lots
deciduous forest/grassland med
savannah/ equatorial forest low
Hot moist air rises creating a —-clouds
cumulus
Hadley cell
by equator
Global trends for biodiversity?
Biomass
Marine=6
terrestrial=470
deep surface=70
Biodiversity Global trends
Latitudinal Diversity Gradient
Most fish at equator the goes down towards the poles
Biodiversity Global trends, Oceanic depth, which depth is most diverse?
intermediate depth 2000-3000m
Why is the Arctic high productivity but low species richness?
The species dont have to adapt to nutrients around them becuase there is so much
different in equator with low productivity by high species richness becuase they have to adapt to the limiting resources
The terrestrial primary production is largely due to
temperature and rainfall
the competition theory about global species richness is?
In temperate latitudes has less species with broader niches creates a jump in productivity in June
while in tropics lots of k species with limited resources
The more surface area would result in higher number of diversity is called—- in global trends in species richness
spatial heterogeneity theory
Rivet hypothesis
each species lost slowly decreases stability
then drops when gets to low
Passenger hypothesis
A keystone species control the whole system
Brain Walker
