1gb3 Flashcards
(18 cards)
what is CITES (bottom up)
convention on international trade in endangered species of wild fauna and flora
protect 35000 different species
countries signed up agree to stop imports/exports of endangered species
what is REDD (top down)
reducing emissions from deforestation and forest degradation
stops deforestation
UN monitor schemes by use of remote sensing and visits
pros and cons of CITES
+ huge international influence, 181 countries signed
- difficult to enforce it
- protects species not ecosystems
- countries need to strategise and fund themselves
pros and cons of REDD
+ lots of money available for projects
+ provides incentive for locals
- unclear what is meant by ‘forest’
plant adaptions in tropical rainforests
waxy leaves with drip tips - rain runs off to not encourage mould/break leaf with weight
buttress roots - large roots support trees because roots are shallow
large leaf surface area on rainforest floor - maximises sunlight
smooth trunks and branches - encourages run off to prevent mould
tall and thin trunks - reach sunlight easily
animal adaptions
camouflage from predators
bright colours to deter predators (sign of poison)
strong limbs and tails to help climb trees
plant adaptions in taiga
needle shaped leaves - reduces water loss through transpiration
conical shaped trees - sheds heavy snow to prevents branches breaking under the weight
seeds in cones - protects seeds from cold
wide shallow roots - avoid frozen ground but wide enough to anchor them in strong winds
animal adaptions in taiga
thickly oily fur - helps keep animals warm
hibernation/migration
large surface area feat - distributes weight to help move
summer and winter coats - for camouflage
tropical rainforest climate
wet and warm climate all year round
taiga climate
long cold winters, short wet summers, little precipitation
cold dry climate
tropical rainforest nutrient cycle
big precipiation
big biomass store
medium soil store
small litter store
taiga nutrient cycle
small precipitation
medium biomass store
small soil store
big litter store
why is tropical rainforest nutrient cycle like that
plants grow all year so big biomass store
dead matter drops to the floor and decomposes quickly because ideal conditions so small litter store
lots of decomposition restore nutrients to store
constant precipitation leaches nutrients out of soil so smaller soil store
why is taiga nutrient cycle like that
plants only grow for short time so small biomass store
only decomposition in summer so litter accumulates all year round so big litter store
soils thin, low in nutrients and acidic so again small biomass store
3 classification of energy resources
renewable
non renewable
recyclable
renewable energy
uses natural sources of energy
wind, water, solar, geothermal
non renewable energy
finite resources that can’t be replenished
coal, oil, natural gas
recyclable energy
using energy/resources that would have otherwise been thrown
biofuel, nuclear energy