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๐ฒ๐บ๏ธ Living World ๐ฌ๐ - Coggle Diagram
๐ฒ๐บ๏ธ Living World ๐ฌ๐
Biomes of the world ๐
๐ Terms
Distribution - The way in which something is spread out over an area
Ecosystem - A community of plants and animals that interact with one another
Biomes - Large scale ecosystems
Deciduous forest ๐ฒ
Very constant amount of rainfall throughout the year ๐ง๏ธ
Temperatures in the other hand do get significantly warmer throughout the summer and autumn months ๐ก๏ธ
Examples of places: UK ๐ฌ๐ง, France ๐ซ๐ท
Tundra โ๏ธ
Rainfall increases a small amount throughout the year - peaking in July however remains consistently low ๐ง๏ธ
Temperatures remain sub zero for almost all of the year sorry from in the summer months when they are able to reach average highs of 15ยฐ ๐ก๏ธ
Examples include Northern Russia ๐ท๐บ and Iceland ๐ฎ๐ธ
Hot desert ๐๏ธ
Rainfall is consistently low with the 3 summer months seeing averages of nothing at all only 75mm fall on average every year ๐ง๏ธ
Average temperature surprisingly ranges from around 6ยฐ to around 17ยฐ. This is due to the freezing overnight temperatures that occur due to the lack of cloud cover ๐ก๏ธ
Examples include Australia ๐ฆ๐บ and Egypt ๐ช๐ฌ
Grasslands ๐พ
Rainfall in grasslands is entirely dependent on the season with the summer months being classed as a wet season in which rainfall peaks at 330mm in a single month. November and December however average at nothing ๐ง๏ธ
Temperatures have a smaller range at only 6ยฐ they average join the upper 20s all year ๐ก๏ธ
Examples of places include Zambia๐ฟ๐ฒ and Botswana ๐ง๐ผ
Rainforest ๐
Characteristics ๐ฆ
Average temperatures remain at a fairly constant level in the upper 20s throughout the year ๐ก๏ธ
Examples include Brazil ๐ง๐ท and Malaysia ๐ฒ๐พ
As the name suggests, rainforests have consistently high rainfall with only a slight dip to the minimum monthly average in June (around 150mm) ๐ง๏ธ
Case study
(Malaysia)
๐ฒ๐พ
Location
Malaysia
is a country located in south-east Asia. the land is split into 2 parts, separated by the south china sea. It owns part of Borneo and boarders Thailand.
Causes of deforestation in Malaysia
Commercial framing
is usually big industries such as palm oil. Massive areas of land are cut down and cleared to make way for palm oil plantations.
Subsidence farming
is small scale traditional farming. It is done by local people for local people and is much less damaging than commercial farming.
Malaysia has the larges
logging industry
in the world. Clear felling is often used, which completely decimates the rainforest.
Mining
is another large industry in Malaysia as its soils contain lots of minerals. Roads have to be built and areas have to be cleared for mining to occur.
Energy development
such as dams are perfect for the fast flowing rivers found on rainforests. These cause large areas of forest to be flooded behind the dam.
Roads
are being built to access mining and forestry areas. These affect all the wildlife around the road for up to a mile away.
Population growth
has lead to Malaysia to clear areas of forest to make way for new settlements on the outskirts of cities and towns.
Impacts
Local impacts
Soil erosion
is becoming a problem due to the removal of plants and vegetation.
Large areas
of rainforest have been
cut down
causing a loss in biodiversity.
Improvements in infrastructure
has led to developments in tourism and industrial output.
Less trees has head to less
transpiration
from their leaves leading to a g]dryer climate.
More
Hydroelectric power
has lead to cheaper electricity from rainforest rivers.
Some waterways have been polluted leading to water shortages.
Space for
traditional living
and subsidence farming has become more sparse due to less actual rainfores.
Global wider impacts
Deforestation is driven by profit. Short term gains leading to long term impacts.
Fires from people illegally clearing patches of forest release lots of carbon dioxide into the environment, enhancing the greenhouse effect.
Deforestation has a direct effect on global climates, contributing to the greenhouse effect.
Medical plants could be lost could be lost in the extensive deforestation.
The rainforest is used as a world tourist site and is protected as a world heritage site.
Economic gains
Minerals such as gold are very valuable
Companies pay taxes to the government which can be used to improve public services.
Improved infrastructure opens up a new area for industrial development and tourism
Jobs are created in farming and construction.
Products such s palm oil and rubber provide new materials for processing industries.
Economic and environmental losses.
Plants that could bring huge medical developments and high profits could become extinct.
Rising temperatures could devastate some crop farming.
Climate change could have have an economic costs as people have to adapt to warmer world.
Fires can cause harmful pollution and destroy large areas of forest if uncontrolled.
Pollution of water sources and an increasingly dry climate result in water shortages.
Sustainable management
The Malaysian government have implemented the following policies to ensure that the tropical rainforest can be conserved and enjoyed by future generations.
Local communities
included and involved in forest in forest conservations projects
Education
to increase public awareness of the value of tropical rainforest.
Use of alternative timber sources
such as rubber trees was encouraged
Sustainable selective logging
mature and commercially viable trees over a 40-year-cycle to ensure that trees had time to re-establish themselves.This is known as
Selective Management System.
Permanent Forest Estates
have been created government where no change of land use is allowed
Creation of Biosphere Reserves
and National Parks to protect biodiversity.
Experiments with heli-logging
(using helicopters) to target individual trees and reduce impact of logging.
Ecotourism
promoted and developed in tropical rainforest areas
Water Cycle ๐ง
Water in the rainforest is recycled to a great degree.
Smaller trees and plants soak up water from the ground while larger ones rely more heavily on transpiration up in the canopy โถ๏ธ As the day heats up, water is evaporated from the trees โถ๏ธ it then accumulates in the atmosphere in the form of cloud โ๏ธ โถ๏ธ Finally, the rain begins again and the majority of water is taken in by the canopy some some of it falls to the floor
Most rainforests are listed within the tropics. This is because here, there is severe head which allows for rapid evaporation of water. Cloud thus forms very quickly and rain comes very quickly back down
Soil in a rainforest is actually surprisingly poor.
The diagram above shows how layers of soil in a rainforest differ in properties. The very top layer is extremely thin and made of decomposing material. This is very fertile and perfect fit growing in - it is known as the Humous Layer. Underneath this is extremely infertile soil as it doesn't have the necessary nutrients that plants need to grow. The final layer is hard rock. This is full of nutrients however plants cannot access them easily
In the rainforest, there is a different nutrient cycle. Nutrients help trees grow very large and rapidly โถ๏ธ The trees then she's their level which fall to the ground โถ๏ธ These leaves begin to decompose, returning their nutrients to the ground โถ๏ธ These nutrients then enter the soil but are quickly taken up by the trees and thus for ever sink far into the ground
The rainforest has many different layers with special names
The emergent layer is the latest in which only the very biggest trees reach. Trees here have best access to sunlight and water
The Canopy is the to of most trees. Light here is still plentiful and water can be accessed through transpiration. This can be anywhere between 20-40m
The under canopy sure just before the main canopy and is where some trees and sailings reside. Light is not limited here so trees wait for a two in the canopy when they can grow through
The shrub layer sits closest to the forest floor. Water is plentiful however it is dark and gloomy
Adaptations ๐ฟ๐ Living in the rainforest has its challenges, that's why organisms have adapted to the new environment
Buttress Trees
are a clever type of tree that loves in the rainforest. They know that the best, most fertile soil is on top of the ground. For this reason, they have adapted to grow their this in an outward direction rather than down. This creates huge sprawling roots
Fan Palms
are another plant that has adapted to living in the rainforest. Some of their adaptations include huge leaves to help drain excess water. This is necessary as photosynthesis will be more effective on dried leaves. The attend are also able to move into the sunlight
Sloth Bears
have actually evolved to be the slow speed we know them to be. This is because it is easier for predators to spot moving animals. They have also attached to increase the time they can hold in their excrement. This is because in order to excrete waste that must go back to the ground which is a show and dangerous process
Poison Dart Frogs
have a wall know adaptation of being able to produce toxins through their skin. Their bright colours are used to warn potential predators of their danger. They also have a lesser known ability to have suckers on feet. The help to make their movement around trees easier
Reasons to protect the rainforest
Desertification can occur if the trees are all removed as they are essential to keep the water cycle going ๐ณ
Over half of the world's species inhabit the rainforest and so should be protected in order to preserve biodiversity
Trees at as carbon dioxide meaning when they grow, they remove carbon dioxide from the atmosphere ๐ญ
Flooding๐ would become a bigger problem as the trees soak up a lot of water and this would no longer be happening
There are still some indiginous communities living within the rainforest and these people would lose their home ๐
Rainforest products are extremely useful in all aspects of our life from coffeeโ to medical drugs๐. Furthermore, there are many as yet unexplored species in the rainforest who's properties meet be extremely desirable in the future. By destroying then we may need destroying of hopes of a cure for current deadly disease
Characteristics of a cold environment.
A cold environments climate
The
climate graph
of a
cold environment
would have below 0'C temperatures in winter and spring, also paired with low amounts of precipitation (around 10mm). In the summer months the temperature would rise above 0'C to around 10'C and fall again in autumn. As the temperature is only above 0,C for about 5 months it makes it hard for plant and animal life to survive. The precipitation also rises in the summer (around 50mm).
Adaptations of plants
A
bearberry
is found in a tundra and grows 5-15 cm above the ground. This means that it could survive strong winds. It also has bright red berries which makes them attractive and stand out to birds, which eat them and distribute their seeds.
Adaptations of animals
Seals
have a streamline body to swim better. they also can swim for an hour at 600m of depth in one breath, allowing them to swim below large patches of sea ice.
Antarctic krill
can survive for up to 200 years without food - because food can be hard to come by in deep cold Antarctic oceans. Their internal organs also glow in the dark so they can see each other in the dark.
Artic Hares
have long sharp claws which allow them to dig for food. Furthermore, they can run at speeds of 40mph, so they can chase prey.
Emperor penguins
usually huddle together to conserve heat. They also have streamline bodies which allow them to swim and catch fish.
Adelaide penguins
have thick feathers to help keep the heat in. They also have winged flippers, which help them swim and hunt for prey.
Artic foxes
the thickest fur out of all the animals. They also have the ability to change fur colour wo trap/release heat when needed.
Polar bears
have small ears and snouts to decrease heat loss. They also can smell things under 3m of ice, in order to find prey below them.
:snowflake: Case study :snowflake:
Svalbard
Location
Svalbard
(owned by Norway) is an archipelago north of Europe, in the artic ocean included in the artic circle - near the North pole.
Background information
Svalbard has a population of 3,000 people
The economy is based on mining, fishing, and tourism.
60% of the land is glaciers and 10%is vegetated
Svalbard only has 1 university
It spends 6 months of the year in darkness
opportunities
mineral extraction
There is lots of coal is Svalbard and around 300 people still work in the coal mines there. Mining used to be a huge business for Svalbard by some mines have been closed and abandoned in the 20th century.
Energy developments
The coal is used to power the cola power plant - which is Norway's only coal power plant, supplying the whole archipelago with electricity.
Fishing
The waters around Svalbard are the richest n the world. These fishing grounds are protected and only small fishing is allowed as they are important breeding grounds for fish.
Tourism
Around 100,00 tourists regularly visit Svalbard every year, providing many jobs for people. One of the major attractions if the northern lights.
Challenges
Water/sewage pipes freezing in winter
Solution: They have heated water pipes on the surface
Roads and buildings cracking in extreme cold temperatures.
Solution: They raise the roads to prevent freezing
polar bears out number people
Solution: People are allowed to carry guns and use them if they have to.
Working outdoors and construction is hard due to unpredictable snowy weather
Solution: Work is but on halt in winter months and permafrost is kept frozen and used as a foundation.
Travelling in snow
Solution: Snow buggies are the most common mode of transport
Keeping homes warm
Solution: Using triple glazed windows top reduce heat loss
Key words
A
cold environment
is an area of the world that experiences temperatures below 0'C for long periods of time.
Permafrost
is a patch of frozen ground, which over a year never melts.
A
polar region
is a region of the world surrounding the north and south poles, mostly dominated by the earths ice caps
A
tundra
is a flat treeless artic region which has permafrost, and spends most of its time below 0'C.
A
wilderness
is a large unspoiled, wild area unaffected by human activity.
Small Scale Ecosystems โป๏ธ
๐ Terms
Biotic
vs
Abiotic Components: There are two types of components present in an ecosystem, biotic and abiotic. Biotic components are those which are living such as ๐๐ฟ๐. Abiotic Components on the other hand are not living e.g. โ๏ธ๐ง๐ก๏ธ
Interdependent: this is where components in an ecosystem need upon each other for survival
Biodiversity: the variety of plant and animal Life in the world or a habitat
A good example of a small scale Ecosystem is a common garden [pond]
Ponds can also provide a good opportunity to explore food webs. Here is a typical one you may be shown in an exam
Food webs provide a better visualisation of an ecosystem than a good chain. The levels you see here represent the different categories of components. Producers (๐ฑ) to Quaternary Consumers (๐ฆ)
Food webs will help show what will happen if any given level is removed from an ecosystem and can demonstrate the nock on effects of any change
Energy is lost at each level as each organism will use energy itself to perform the 7 essential life processes (MRS GREN)
In any Ecosystem, decomposers have a very important role to play. They are responsible for linking the nutrient cycle up again and returning nutrients to the ground
This is called the nutrient cycle:
Nutrients originate from the atmosphere and weathered rocks. They are brought into (and out of) an ecosystem by the water cycle ๐ง๐ฒ
Anything biological can be broken down and the nutrients released. This can be dead leaves, dead fish or feaces
Changes to an ecosystem
Changes made to ecosystems can often have a detrimental effect on the community even if said change is only small.
Changes can occur naturally which cause change to an ecosystem. Such a natural change could be: Climate Change, Foods, Disease and Droughts
Human influence can also be responsible for dramatic changes. This could be in the form of draining ponds, cutting down trees, removing hedges extensive agriculture and the introduction of invasive species
Humanity's contribution to climate change had also been changing ecosystems globally due to rising sea levels, warmer weather and higher acidity in the ocean
Introduction of a new species can lead to a change in an ecosystem in different ways
In the new species is preditorial, it will decrease the population of its prey
This will mean that the numbers of the prey's prey increase as there is less to eat it
If the new animal has to compete for food, numbers of is competitors will decrease
Anything that eats said new animal will increase in population as there is more food
Why are cold environments so fragile and how can we protect them?
Cold environments are
fragile
because they can be easily damaged by human activity. It can take a long time for them to become established. Small events can have large, long term effects on an environment such as a tundra.
Cold environments are rich in
resources
. Extraction of these could damage the environment by
polluting the air
and
area around it
.
Housing and buildings are invading
natural habitats
and can get in the way of animal migration paths
Oil spills
can horrifically damage the environment by killing wildlife. They are extremely difficult ti clean up and take a long time it naturally disappear.
Why do we need to protect cold environments?
There are opportunities for forestry and fishing that need to be preserved.
Indigenous people depend on the wildlife for hunting and fishing.
Tourists want to see natural landscapes and beauty.
Scientists do research here, to do with climate change, so it needs to be unspoilt.
There is lots of biodiversity that needs to be preserved.
The Alaskan pipe line
The oil from the ground is 49'C which helps it flow, but this could met permafrost.
Solution: The pipeline is raised and insulated to prevent the ground from melting
Possible cracks caused by earthquakes could cause oil leaks
Solution: The pipeline is supported so if an earthquake happens then the pipe can move. The flow of oil can also be turned off.
The pipeline crosses mountains and rivers.
Solution: Pumping stations keep the oil moving up mountains, and the pipeline passes under rivers.
Large herds of animals need to migrate across the pipeline.
Solution: The pipeline is raised so animals can migrate unerneath.
How can the risks of a clod environment be managed?
Using Technology in Alaska
The
Great Alaskan Pipeline
was original on the ground, but due to modern developments and concerns it has been raised allowing animals to pass under it and
International agreements
In
1959 The Antarctic treaty
was signed by countries that own Antarctica. The treaty recognises the importance of scientific research .
Government policies
The US government has been evolved in protecting Alaska since oil was discovered. There is an environmental policy which ensures that landscape and wildlife are protected.
Conservation groups
The
world wildlife fund
is a conservation that provides scientific information to help protect the cold environments.
Should cold environments be protected in wilderness areas?
For
Wilderness areas are fragile and can easily be damaged by humans
Rare plants and animals live in these cold cold environments.
Untouched natural environments are important for scientific research and outdoor labs.
Against
Cold environments are rich materials such as oil and coal.
Technology allows these environments to be used without impacts.
Over 4 million people already sustainably live in cold environments.