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biology chapter 3

how ecosystems change

TermDefinition
lichen organism that consists fungi +algie
adaptive radiation new species adapting to inhibit different niches
habitat loss complete destruction
poly many
monoculture one crop
deforestation don't replace the trees
fragmentation echosystem separtation
soil erosion top soil degrates
economy a country's wealth
sea a body of water that doesn't drain
climax community community of plants animals and fungi
pioneer species species that first colonized new habitats
wetland ecosystems where soil is waterlogged
exploitation sustainable use
overexploitation non sustainable use
reclamation returning the land In its best form
keystone species root species of an ecosystem
aeration plucking parts of grass to help air circulation
ecological succesion primary and secondary succession
natural selection survival of the fittest
resource exploitation the use of natural resources for economic growth
urban development replacing nature with architecture
primary succession template bare rock--lichens--small plants+lichens--grasses, shrubs, small trees-- big shade tolerant trees
what are the 4 main natural events? flooding, tsunamis, drought, insect infestation
when does primary succession occur? where there is no soil and wind and rain can cary over living organisms
secondary succession when the soil has been exposed to biotic factors, occurs as a result of disturbance to an area
how organisms adapt to change over time as they reproduce certain features with morph
deforstation causes top soil to degrate
non sustainable land use over farming, logging and expanding
sustainable land use rotating crops, controlled logging, redevelopment plan
examples of resource use loggin, fishing, farming, mining
Created by: eila
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