Karteikarten
Ecology
Karten in diesem Stapel (37)
- 1Abiotic Fa upctorsNon-living components of the ecosystem that affect other living organisms
- 2Biotic factorsEnvironmental factor associated with living organisms in an ecosystem that affect each other eg predation or disease
- 3EcosystemA community of animals, plants and bacteria interrelated with the physical and chemical environment , this can range in size eg a rock pool to african grassland
- 4Habitatthe place where the organism lives
- 5Populationall the organisms of one species who live together at the same time and place and can breed together
- 6Communityall the populations of different species who live together at the same place and time and that interact with each other
- 7Nichethe role of each organism in its environment eg what it feeds on or how it reproduces
- 8Cycle changesCycles that repeat themselves, eg the movement of the tides or the predator prey relationship
- 9Directional changeLast longer than the lifetime of an organism, where particular variables continue to increase/decrease, eg erosion of the coastline
- 10Unpredictable/ erratic changesNo rhythm and no constant direction eg the effects of hurricanes
- 11Producerorganisms eg plants to convert light -> chemical energy via photosynthesis to produce biomass
- 12Consumerany heterotrophic organisms in a food web/chain
- 13Primary consumera consumer that eat plants
- 14Secondary consumeran organism that eats primary consumers
- 15Decomposerliving organism that feed on waste or dead organic matter
- 16Detritivorean animal which feeds on dead organic material, especially plant detritus.
- 17Carnivorean animal that feeds on other animals.
- 18Herbivorean animal that eats only plants
- 19Nutrienta substance that provides nourishment essential for the maintenance of life and for growth.
- 20Trophic levelthe level at which an organism feeds in a food chain
- 21Biomass transferthe transfer of biomass between trophic levels
- 22Productivitythe rate of production of new biomass by producers
- 23Gross primary productivitythe rate at which plants convert light energy into chemical energy by photosynthesis
- 24Net primary productivitythe proportion of the sun's energy that is available to enter the food chain (8%)
- 25Secondary productivitysecondary consumer -> tertiary consumer
- 26Saprotrophsorganisms such as bacteria and fungi that feed on dead and decaying matter
- 27Ammonificationthe production of ammonia by bacterial action in the decay of nitrogenous organic matter
- 28Nitrogen fixingconversion of atmospheric nitrogen into nitrates or ammonium ions
- 29Nitrificationoxidation of ammonium to nitrite (Nitrosomonas) and nitrite to nitrate (Nitrobacter)
- 30Denitrificationconversion of nitrates to nitrogen gas
- 31Nitrogen fixing bacteriaAzotobacter, N2 -> nitrogen in the soil
- 32Nitrogen fixing bacteriaRhizobium, N2 -> fixed nitrogen in the root nodules of legumes plants
- 33Chemoautotrophicbacteria that derive energy from oxidation of certain inorganic compounds
- 34Successionprogressive change in a community of organisms over time
- 35Climax communitythe final stable community that exists after the process of succession has occurred
- 36Pioneer speciesthe species that begin the process of succession, often colonising an area
- 37Deflected successionhappens when succession is stopped or interfered with eg grazing
Informationen
- Beschreibung
- A2 Biology (Ecosystems A2) Flashcards on ecosystems
- Erstellt von
- Robyn Ellis
- Aufrufe
- 6
- Bewertung