ecosystems: treats and solutions Flashcards
what did become become aware in the 1980s
- drying out of the continet
- arise of plastics
- increased CO2 levels
what does the flora and fauna act do
aims to protect native plant and animal species to ensure their survival and preserve their biodiversity
- protect biodiversity
what was the outcome of the rio summit
development of the convention on biological diversity, signed by 173 countries
requires counties to pass laws on biodiversity to protect plants and animals
what are ecosystems services
-the benefits that humans derive from ecosystems, such as food, clean water and clean air
has nature’s contributions to humans changes, give one example
yes, there has been a decline natures services seen in pollinators
what is the formular for calculating the number of threatened species
percentage threatened x number of species= number of threatened species
what causes species to go extinct
- 75% of the land is significantly altered
-85% of wetland areas have been last
-50% of the live coral has been lost
what is the anthropocence
a new geological echop in which human activity is the dominate influence on the earth
what are some signals of the anthropocence
-increase N and P in soil
- increased CH4 and CO2 levels
- dramatic extinction rates
-converson of forest land into human land uses
what are the 9 process and bountries
-climate change
- biosphere integrity
-ocearn acidifaction
-fresh water use
-lang system change
-biogeochemical flows
- stratispheric ozone
novel entities
atm aerosol pullution
what are the 2 biology ones in the processes and bountries
-biosphere intregity- measured in entinction rate
-land system change- measured in percentage of forest
impacts of carbon emissions
- increased warming
-acidification
sea level rise - more frequent wildfire
is australia a mega diverse nation
yes!!!!!
what does australias biodiversity mean to culture
it is involved in australia’s cultural identity
(AUS) how many species have been lost since european settlement
110 species have gone extinct
what have happened to the adundence of species since 1985
dramatically declined
what drives species to go extinct
- habitat clearance
2.invasive species - over exploration
- co extinction- loss of one leads to the loss of another
- climate change
- disease
how many animals to cats kill a year
1.7 billion native species
what is an ecosystem
interactions between living and non living components
how many animals are listed as high risk
1800
how many extinctions are there in the world
over 1 million
what are some examples of transformative change
-raising money for biodiversity pledge
do we need money to save australias threated species
yes, over a billion dollars
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