Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
102 Cards in this Set
- Front
- Back
Spatial variation in community structure |
zonation |
|
spatial variation in vegetation types |
vegetation zone |
|
temperature changes as latitude changes |
latitude zonation |
|
temperature changes as altitude changes |
altitude zonation |
|
There is a _______ in vegetation from east to west due to decreasing humidity (moisture) in the US. |
decrease |
|
major regional ecological community of plants and animals |
biome |
|
biome: high precipitation, high temperature |
tropical rainforest |
|
biome: low precipitation, very low temperature |
tundra |
|
biome: very low precipitation, high temperature |
desert |
|
life zone that is based on temperature |
Merriam life zone |
|
life zone based on avg. annual biotemperature and precipitation |
Holdridge life zone |
|
sum of the avg. daily temp. over the year for the days when avg. daily temp. is >0 degree Celsius divided by 365 |
average annual biotemperature |
|
evaporation+transpiration (plant water loss); important indicator of moisture |
Potential Evapotranspiration (PET) |
|
PET/preciptitation |
PET ratio |
|
PET=1 |
humidity will remain stable overtime |
|
PET<1 |
humidity will increase over time (wet) |
|
PET>1 |
humidity will decrease over time (dry) |
|
high latitude--> low latitude |
temp increases |
|
low altitude--> high altitude |
temp decreases |
|
major ecosystems that result from predictable patterns of climate as influenced by latitude, global position, and altitude |
ecoregions |
|
four ecoregion domains in north america |
polar, humid temp, dry, humid tropical |
|
Biogeographical regions are based on _______ |
distribution of terrestrial animals |
|
number of species in a certain area |
species richness |
|
When PET increases species richness _____ but will eventually level off. |
increases |
|
species that is only found in a certain area (state) |
endemic species |
|
States with the greatest endemic species have the greatest ________. California, Hawaii, Texas, Florida |
species richness |
|
two most important abiotic factors that affect species |
moisture and temperature |
|
decrease in species richness as one travels northeast from california |
mammals |
|
decrease in species richness as one travels north from Texas |
reptiles |
|
decrease in species richness as one travels north from Georgia |
amphibians |
|
decrease in species richness as one travels northwest from South Carolina |
trees |
|
decrease in species richness as one travels from Southern Mexico to Northern Canada |
Birds |
|
As you travel east-west, grasses become _______. |
shorter |
|
_____ are needed to maintain grasslands. |
Fires |
|
Grasslands have _____ rates of evaporation. |
high |
|
Two dominant animals in grasslands |
grazing (bison) and burrowing (prarie dog) species |
|
patches of grass are seen |
bunch grass |
|
tallest grass on tallgrass praries |
big bluestem grass |
|
lawn of grass is seen (grows uniformly) |
sod grass |
|
two kinds of bunch grass |
orchard grass and little bluestem |
|
two kinds of sod grass |
kentucky blue grass and western wheatgrass |
|
Forests show a/an ______ in their ANPP as temperature increases. |
increase |
|
Grasslands show a/an ______ in their ANPP as temperature increases. |
decrease |
|
a tropical grassland with scattered trees or shrubs; mostly located in Africa |
savanna |
|
The world's largest diversity of ________ is found on the savannas of Africa. |
ungulates (hoofed animals) |
|
Most deserts are located in these two places. |
Tropic of Cancer and Tropic of Capricorn |
|
Two examples of a Semiarid Desert |
Gobi and The Great Basin |
|
Two examples of an arid desert |
Australian Great Desert and the Sahara in Africa |
|
a region where the subsoil is frozen (called permafrost, a permanently frozen ground layer) |
tundra |
|
Two types of tundra |
arctic and alpine |
|
type of tundra that is found around the north pole |
arctic tundra |
|
type of tundra that is found on the top of tall mountains, including those in the tropics |
alpine tundra |
|
stunted form of trees that are characteristic of transition zones between alpine tundra and subalpine coniferous forest |
Krummholz |
|
______ a krummholz there are no coniferous plants |
Above |
|
_____ a krummholz there are coniferous plants |
below |
|
Three types of forests |
coniferous, temperate deciduous, tropical |
|
Coniferous forests consist of all ________. |
gymnosperms |
|
seeds that are enclosed in an ovary during development |
gymnosperms |
|
seeds are enclosed in ovary |
angiosperm |
|
All conifers are evergreen except ____ and ____ ______. |
larches and bald cypress |
|
6 important genera of conifers |
picea, abies, pinus, larix, tsuga, juniperus |
|
conifer, Norway Spruce, native to northern and central Europe, monoecious |
picea |
|
conifer, Basalm Fir, northern to most of northern US and into Canada, monoecious, widely used as Christmas tree |
abies |
|
conifer, Loblolly Pine, widely distributed in the southeastern US, fast growing, moderately tolerant to shade when young but becomes intolerant, monoecious |
pinus |
|
deciduous coniferous, Eastern Larch, native to N. America and Arctic Circle, one of the last to drop leaves in autumn, needle flat and light green, monoecious |
Larix |
|
conifer, Eastern Hemlock, native to Eastern Canada and Applachia, Monoecious with the flowers in separate clusters on the same branch |
Tsuga |
|
conifer, native to northern Asia, Europe and the US, has one of the widest distributions of any shrub, typically dioceious, fruits used in making gin |
Juniperus |
|
The only deciduous conifer (rest are evergreen) |
Larix |
|
the only dioecious conifer |
juniperus |
|
6 important genera of deciduous trees |
fagus, acer, quercus, betula, liriodendron, populus |
|
deciduous, American beech, late successional species, predominant in Indiana and Eastern third of the US, lower points on PAR vs. light curve |
Fagus |
|
deciduous, Sugar Maple, late successional species, similar to American beech (low point on PAR light curve), mostly in the North-eastern part of US |
Acer |
|
deciduous, Eastern Red Oak, main source of food for small animals, similar distribution to sugar maple but also extends farther down, monoecious |
Quercus |
|
deciduous, yellow birch, not abundant in Indiana |
Betula |
|
deciduous, Tulip Tree, State tree of Indiana, grows in low lying area (really big tree), is a discontinuous species (can be found in one location and in another far far away) |
liriodendron |
|
oldest and most primitive angiosperm family |
magnoliaccae |
|
deciduous, trembling aspen, common in boreal forests, most widely distributed tree in America, has asexual reproduction, dioecious |
Populus |
|
Most Broadleaf Trees in temperate areas are deciduous but there are 3 exceptions: |
Eucalyptus, Nothofagus, Magnolia |
|
large oval and waxy leaves that help drain rainwater quickly |
drip tips |
|
freshwater lakes |
lentic ecosystem |
|
depression in the ground that results from moving glaciers |
Pothole lakes |
|
forms due to retreating glacier and larger than a pothole lake |
glacial lake |
|
forms due to water accumulated after a volcanic eruption |
volcanic crater lakes |
|
forms when the river changes its course |
Oxbow lake |
|
lentil ecosystem stratification layer that is at the top of deep water |
limnetic zone (eplimnion) |
|
lentic ecosystem stratification layer that is at the top of shallow water; where halophytes grow (roots are in soil but flow in water) |
littoral zone |
|
lentic ecosystem stratification layer that is in the middle area and has compensation level |
metalimnion |
|
lentic ecosystem stratification layer that is the bottom layer |
profundal zone (hypolimnium) |
|
type of lake, low surface to volume ratio; clean and clear; low in primary and secondary productivity |
oligotrophic lake |
|
type of lake, low in oxygen, high surface to volume ratio, muddy and shallow, more nutrients |
eutrophic lake |
|
freshwater rivers |
lotic ecosystemsb |
|
body of land from where all water drains to the same river |
watershed |
|
ocean zone that is sunlit |
euphotic zone |
|
middle zone of ocean |
disphotic zone |
|
zone of ocean where there is no sunlight |
aphotic zone |
|
plant species that produces small plant embryos instead of seeds |
vivipary |
|
something that takes in carbon from the atmosphere without which the rate of CO2 assimilation decreases |
carbon sink |
|
forms when SO2 interacts with humidity (mixture of smog and sulfur dioxide) |
industrial smog |
|
forms when NOx interacts with sunlight |
photochemical smog |
|
4 conditions for photochemical smog formation |
sunlight, temp greater than 18 degrees Celsius, presence of nitrogen oxides, presence of volatile organic compounds |
|
source of pollution is easily pin pointed and identifiable (ex: factory) |
point source pollution |
|
source of pollution comes from a large area |
non-point source pollution |