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ecosystem structures and dynamics Flashcards

ecosystem The living and non-living parts of the environment in a specific area. (Ecosystems can be really small or really large!)
ecology The study of how living things are related each other and to their natural environment.
Environment Everything that surrounds an organism and influences it. The study of how living things are related each other and to their natural environment.
Biotic Factors The living parts of an ecosystem such as plants and animals.
Abiotic Factors The non-living parts of an ecosystem such as soil, climate and rainfall.
Organism A living thing.
Consumer An organism that feeds on other organisms because it cannot make its own food.
Producer An organism that can make its own food through the process of photosynthesis.
Decomposers A consumer that breaks down the tissues of dead organisms as food.
Herbivore A consumer that only eats plants.
Carnivore A consumer that only eats animals
Omnivore A consumer that eats both plants and animals.
Predator An organism that eats other organisms to live.
Prey The organism that gets eaten.
Decomposistion The breaking down of an organism back into nature.
Germinate The process of a seed beginning to sprout or beginning to grow into a plant.
Habitat The physical place where an organism lives.
Interdependance The relationship between plants and animals in an ecosystem.
Niche The position of an organism in a community of plants and animals.
Photosynthesis The chemical process where plants make their own food.
Terrestrial Land
Adapt To change in order to fit a new situation.
Balance Equilibrium in an ecosystem
Population A group of the same type of organisms living in an area.
Community The interaction of all organisms (more than one population) living in an area.
food chain A picture that shows how each organism gets energy.
food web A system of food chains.
primary consumer Gets energy from plants (herbivores)
secondary consumer Gets every from primary consumers (omnivores and carnivores)
tertiary consumer Gets energy from secondary consumers (carnivores)
aquatic ecosystem Includes freshwater areas, estuaries (mixture of salt and freshwater), and marine areas
marine ecosystem Includes ocean and sea areas; high salt content
freshwater ecosystem Includes streams, rivers, lakes, marshes and swamps; low salt levels
terrestrial ecosystem Land areas
biome Complex ecological community that extends over a large area; consists of many ecosystems
deciduous Trees that lose leaves in the autumn/fall
nutrients Substance required to nourish an organism
Eutrophication Increased nutrients in an ecosystem (ex: too much fertilizer)
pollutant Substance with damaging effects on the environment (ex: acid rain, over-fertilization, road salt)

Terms : Hide Images
1320317499mutualisma symbiotic relationship in which both species benefit from the association(win/win)0
1320317500symbiosisany relationship in which two species live closely and interact1
1320317501commensalismoccurs when one species benefits from the association while the other is neither helped nor harmed(win/whatever)2
1320317502parasitismoccurs when one organism lives on or inside another organism and harms it (win/lose)3
1320317503PredatorAn organism that eats other organisms to live.4
1320317504PreyThe organism that gets eaten.5
1320317505biomea terrestrial region with similar vegetative communites6
1320317506ecosystemThe living and non-living parts of the environment in a specific area. (Ecosystems can be really small or really large!)7
1320317507CommunityThe biotic interaction of all organisms (more than one population) living in an area.8
1320317508PopulationA group of the same type of organisms living in an area.9
1320317509OrganismA living thing.10
1320317510EnvironmentEverything that surrounds an organism and influences it. The study of how living things are related each other and to their natural environment.11
1320317511ecologyThe study of how living things are related each other and to their natural environment.12
1320317512Biotic FactorsThe living parts of an ecosystem such as plants and animals.13
1320317513nutrient cyclesCarbon, nitrogen, & phosphorus go through these.14
1320317514Abiotic FactorsThe non-living parts of an ecosystem such as soil, climate and rainfall.15
1320317515ConsumerAn organism that feeds on other organisms because it cannot make its own food.16
1320317516detritivoresIndividuals that eat plant and animal remains (dead things) are __, aka scavengers.17
1320317517ProducerAn organism that can make its own food through the process of photosynthesis.18
1320317518DecomposersA consumer that breaks down the tissues of dead organisms as food.19
1320317519HerbivoreA consumer that only eats plants.20
1320317520CarnivoreA consumer that only eats animals21
1320317521OmnivoreA consumer that eats both plants and animals.22
1320317522DecompositionThe breaking down of an organism back into nature.23
1320317524HabitatThe physical place where an organism lives.24
1320317525InterdependanceThe relationship between plants and animals in an ecosystem.25
1320317526NicheThe position of an organism in a community of plants and animals. Where it lives, what it eats, and when it is active.26
1320317527PhotosynthesisThe chemical process where plants make their own food.27
1320317528TerrestrialLand28
1320317529AdaptTo change in order to fit a new situation.29
1320317530food chainA picture that shows how each organism gets energy.30
1320317531food webA system of food chains.31
1320317532primary consumerGets energy from plants (herbivores)32
1320317533secondary consumerGets every from primary consumers (omnivores and carnivores)33
1320317534tertiary consumerGets energy from secondary consumers (carnivores)34
1320317535aquatic ecosystemIncludes freshwater areas, estuaries (mixture of salt and freshwater), and marine areas35
1320317536marine ecosystemIncludes ocean and sea areas; high salt content36
1320317537freshwater ecosystemIncludes streams, rivers, lakes, marshes and swamps; low salt levels37
1320317538terrestrial ecosystemLand areas38
1320317539nutrientsSubstance required to nourish an organism, i.e. carbon, hydrogen, oxygen, nitrogen, phosphorus39
1320317540pollutantSubstance with damaging effects on the environment (ex: acid rain, over-fertilization, road salt)40
13203175413 Factors Sustain Life on Earth1. Gravity 2. Biogeochemical Cycling of Matter 3. Sun41
1320317542Biogeochemical Cycling of Matter1. Hydrogen Cycle 2. Nitrogen Cycle 3. Phosphorus cycle 4. The you name it cycle.42
1320317543AutotrophsProducers. Auto means self, troph means nourishment, food, feeding from43
1320317544PhytoautotrophsUse photosynthesis (sunlight energy) for production.44
1320317545ChemoautotrophsUse chemosynthesis(chemical or heat energy) for production.45
1320317546HeterotrophsConsumers who do not photosynthesis and acquire energy directly from the environment. Must consume other organisms needed to live.46
1320317547What every organism needsWater, Energy, Nutrients47
1320342954Trophic LevelsDescribes and organism position in the food web.48
1320347617What does it mean to be productive?Quantity biomass generated per unit of time. 1gC/m2/d(uot)49
1320364876Productivity is concerned with?Biomass or the total mass (quantity) of living organisms in a given system and the time period varies from system to system.50
1320364877In an ecosystem, there are two basic kinds of productivity.1. Primary Productions and 2. Secondary productions51
1320383947Primary ProductionsThe conversion of inorganic material from the environment to the new organic material at the first trophic level, i.e. photosynthesis and chemosynthesis.52
1320383948Secondary ProductionThe accrual of 10 consumer biomass, i.e. the accrual of new organic material at the second trophic level.53
1320383949Liebig's Law of the MinimumWhatyever essential resource is in short supply limits productivity.54
1320383950Three most productive ecosystemsSwamps and marshes, Tropical rain forest, Estuaries55
1320383951Three least productive ecosystemsTundra, Desert Scrub and Desert56
1320383952Eutrophicationis the ecosystem response to the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic system.57
1320383953Senescensethe gradual deterioration of function.58
1320390542What is a speciesA group of organisms that are sufficiently genetically similar so as to allow for reproduction59
13203905435 Spheres of the EarthBiosphere, Atmosphere, Hydrosphere, Geosphere, Technosphere60
1320390544TaxonomyA system for classifying life forms.61
1320390545Taxonomic rank of organismsDomain, Kingdom, Phylyum, Class, Order, Family, Genus, Species62
1320400255Gause's Lawif two species are both trying to acquire the same resource from the environment, then they cannot coexist indefinitely and one or both must adapt, migrate or go extinct.63
1320425667Resource PartitioningWhen species compete for resources within the same habitat, over time they evolve specialized traits allowing them to share the available resources.64
1320425668Temporal PartitioningDifferent times of the day65
1320425669Spatial PartitioningDifferent places within the habitat66
1320425670Morphological PartitioningMorphological differentiation happens when two competing species evolve differing morphologies to allow them to use a resource in different ways like water birds and how their bills are all different.67
1320425671Indicator speciesorganisms sensitive to the environment and changes like the canary in the coal mine.68
1320425672Umbrella SpeciesA designation used mainly to environmental managers, protecting an umbrella species protects all species in that community.69
1320425673Foundation SpeciesThe dominant primary producers in a food web, always and only autotrophs.70
1320425674Keystone SpeciesTheir presence is of comparatively greater importance than others in the system since their removal can have disastrous ripple effects.71
1320433558Interspecific CompetitionOccurs when two or more species interact to gain access to the same limited resources.72
1320433559Endemic SpeciesUnique to a specific geographic location73
1320433560Native speciesHistorically present (preColumbian) in an ecosystem74
1320433561NonNative (exotic) speciesIntroduced to an ecosystem by migration or through human action be it deliberate or accidental.75
1320433562Invasive speciesOne whose presence has an adverse effect on other species in the ecosystem76
1320447698Lichena composite organism of algae and fungi.77
1320447699EpiphytesAir plants that gather their nutrients from the air. an example of commensalism.78
1320447700Trophic Cascadean ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling.79

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