Unit 1 - Ecosystems, Biomes, Cyles Flashcards
Autotroph/producer
Organisms that can make their own food via photosynthesis or chemosynthesis. (Plants/algae other organisms)
Biome
A distinct geographical region with specific climate, vegetation, and wildlife
Boreal Forest
A forest biome made up of primarily of coniferous evergreen trees that can tolerate cold winters and short growing seasons. Has subarctic biome has a very cold climate, short growing periods dictated by temperature and precipitation. Poor soil nutrients, slow decomp.
Chaparral
Scrubland, biome characterized by hot dry summers, mild, rainy winters. 12 month growing season, but growth is constrained by precipitation, relatively low temperatures in winter. Wild fire is an extremely important for cycling nutrients, plants of this biome are well adapted to both fire and drought.
Climate Diagrams
display monthly temperature and precipitation values, help determine the productivity of a biome
Climatograph
Graphical representation of a location’s basic climate, display 2 variables: monthly average temp and monthly average precipitation.
Commensalism
One species benefits, other isn’t impacted. Positive - neutral interaction
Competition
Most common interaction in an ecosystem, occurs any time there is shared use of a limited resource. Negative-Negative interaction.
Interspecific competition
Between members of different species
Intraspecific competition
Between members of the same species
Consumer
Can’t make its own food must eat other organisms
Carnivor
A consumer that eat other consumers
Secondary consumer
A carnivor that eats primary consumers
Primary consumers
Eats producers (herbivores)
Tertiary consumer
Carnivore that eats secondary consumer (top consumer)
Trophic levels
The successive levels of organisms consuming one another
Food chain
Sequence of consumption from producers through tertiary consumers
Food webs
More complex representation of trophic relation rather than simple food chain
Decomposers
Fungi and bacteria that convert organic matter into small elements and molecules that can be recycled back into the ecosystem
Detritivore
An organism that specializes in breaking down dead tissues and waste products into smaller particles for decomposers the break down into recyclable matter (bugs and maggots)
Scavenger
An organism that consumes dead animals, example vultures
Desert
A biome where little precipitation occurs, lack/less plants, 3 types of desert: tundra, cold desert, and subtropical desert.
Ecological restoration
An attempt to recreate, initiate, or accelerate the rate at which an ecosystem that has been disrupted.
Fundamental niche
The niche that is potentially occupied by a species
Realized niche
The portion of the fundamental niche that a species actually occupies
Mutualism
Both animals in interaction benefit. ++interaction
Parasitism
One organism benefits from interaction, other suffers. +- interaction. Separate from predation, interaction doesn’t end in death typically
Predation
Predator eats prey, +- interaction where animal dies and becomes energy for other animal
Pyramid of biomass
The total mass of living matter in a specific area. Trophic pyramid is a representation of the distribution of biomass among trophic levels
Pyramid of energy
Calculates how much energy transfers between each level of the food chain
resource partitioning
When different organisms within one ecosystem split or use resources at different times to avoid competition
tropical seasonal forest/savanna
A biome marked by warm temperatures and distinct wet and dry seasons. Soil in biome is fertile due to high decomp rates but the low amount of precipitation constrains plants from using the soil. Grasses and scattered deciduous trees are common
Symbiosis
A close relationship between two species
Temperate deciduous (or seasonal) forests
A biome with warm summers and cold winters, dominated by broad leaf deciduous trees such as beech, maple, oak, and hickory. Warmer summers favor decomp and soil generally contain more nutrients than those of boreal forests.
Temperate grasslands/ cold deserts
A biome characterized by cold harsh winters and hot/dry summers. Most biomass is found in the roots. Growth constrained by temp and precipitation. plants include non-woody plants and grasses well adapted to wildfires and frequent grazing animals.
Temperate Rainforests
a costal biome typified by moderate temperatures and high precipitation. Ocean currents moderate temp fluctuations and provide source of water vapor. High precipitation supports growth of very large trees.