[Part 2]- TOPIC 3: Ecosystems, biodiversity and management πŸ™πŸͺΌ Flashcards

1
Q

What climate do temperate grasslands have ?

Hint: distinct

A
  • temperate grasslands have distinct hot and cold seasons.
  • they are found at higher altitude and are at higher altitudes, than tropical grasslands.
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2
Q

What else can you tell me about the climate of temperate grasslands ?

Hint: hot

A
  • temperate grasslands have hot summers that are up to 40c, and have cold winters that can be down to -40c.
  • temperate grasslands also receive 250-500mm of precipitation each year [mostly in the late spring and early summer]
  • and since they’re found at mid-latitudes, the amount of light they receive varies throughout the year.
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3
Q

What characteristics do temperate grasslands have ?

A
  • plants- temperate grasslands are also dominated by grasses, and small plants. There are very few trees in temperate forests.
  • animals- temperate forests are home to fewer animal species, than tropical grasslands.
  • soils- the high temperatures in summer, mean that decomposition happens quickly, so soils are relatively thick and nutrient-rich.
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4
Q

Why are there very few trees in temperate grasslands ?

A
  • there very few trees in temperate grasslands, because rainfall is too low to support large plants.
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5
Q

What animal species can be found in temperate forests ?

A
  • in temperate forests, the animal species that can be found are mammals and rodents such as:
  • bisons
  • wild horses
  • mole rats
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6
Q

What is the tundra biome found ?

A
  • the tundra is found at high latitudes, that are above 60*N in: Northern Europe, Alaska and Northern Canada.
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7
Q

What is the climate of the tundra ?

A
  • temperatures are very low- above 5-10c during the summer; lower than -30c in the winter.
  • precipitation is also very low, around less than 250mm per year. Most of this falls as snow.
  • tundras are found at high latitudes, meaning they get near-continuous daylight in the summer and little to no daylight in the winter.
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8
Q

Fill in the gaps: In the tundra, there is more cloud _____ in the summer.

A
  • In the tundra, there is more cloud cover in the summer [the fractions of clouds oberved, that cover the sky]
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9
Q

What are the characteristics of the tundra?

A
  • plants- the cold climate, and lack of light in the winter make it hard for plants to grow, and there are hardly any trees.
  • animals- the cold climate and lack of vegetation means relatively few animal species live in the tundra.
  • soils- the sparse vegetation of the tundra produces little leaf litter, and organic matter slowly decomposes in the cold and dry climate.
  • This means the soil in the tundra is thin and nutrient-poor.
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10
Q

In the tundra, what do some animals do ?

A
  • Some animals even migrate for the south, in the winter.
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11
Q

Why is the soil in the tundra thin, and nutrient-poor ?

Hint: leaf litter

A
  • the soil in the tundra is thin and nutrient-poor, because:
  • the sparse vegetation of the tundra produces little leaf litter, and organic matter will slowly decompose in the cold and dry climate.
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12
Q

What vegetation and animals are found in the tundra ?

A
  • vegetation such as moss, grass and low shrubs are found in the tundra.
  • and animals like artic hares, artic foxes, mosquitoes and lots of birds are found in the tundra.
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13
Q

What else can you tell me about the soil in the tundra ?

A
  • there is a layer of permafrost [meaning permanently frozen ground] below the soil surface.
  • This can stop water from draining away.
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14
Q

What is the biosphere ?

A
  • the biosphere, includes all part of the Earth that are occupied by living organisms such as: plants, animals, bacteria, fungi and the soil and water those organisms live in.
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15
Q

Explain how the biosphere is a vital system

A
  • the biosphere is a vital system, as the living organisms in it, provide goods that people need to survive.
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16
Q

How does the biosphere provide resources for people. 🎣

A

-food- although most people Cory get their food from the biosphere [e.g- farming livestock], some people get food directly from the biosphere such as hunting or trapping animals. People can eat fish from rivers, lakes the sea; fish can also be farmed in tanks.

17
Q

How does the biosphere provide resources for people ? 🦟

A
  • medicine- ; the biosphere also provide medicines for people. Lots of plants have medicinal properties, as well as being used to cure illnesses, keeping people healthy.

-There are also various plant species such as Echinacea, which is normally used to treat infections, or the plant species quinine [from a cinchona] tree, that’s used to treat malaria.

  • ultimately, this clearly shows how the biosphere provides resources for us to create medicinal drugs
18
Q

How does the biosphere provide resources for people ? πŸͺ¨πŸŒ²

A
  • building materials- the biosphere also provides raw buildings materials, such as metal and rock.
  • ; the biosphere can also provide buildings materials for construction, such as trees being made for timber [which is used in structures of bridges and buildings.]
19
Q

How does the biosphere provide resources for people ? 🦭πŸ”₯

A
  • fuel resources- not only does the biosphere provide fuel resources such as fossil fuels for burning, it also provides plants and animals, to help keep warm.
  • as a fuel resource, the biosphere also provides dried animal dung or dried grass, which can be burnt for fuel Aswell as animal fat [such as seal blubber] being used for oil lamps.
21
Q

How is the biosphere being increasingly exploited, for commercial purposes ? πŸ¦‡

A
  • energy- since the population is [rapidly] increasing, there is also an increase of demand for energy.
  • hydroelectric dams are used to generate hydroelectric power, yet parts of the tropical forest have been flooded by the building of hydroelectric dams- this harms fish populations because it destroys their habitats and it kills wildlife.
  • For example in a tropical forest, located in Malaysia, flooding from hydroelectric dams have put bat species at risk of local extinction. [where a species will no longer exist in that particular geographic area, though they will exist somewhere else]
21
Q

What is local extinction ?

A
  • local extinction, is where a species will no longer exist in that particular geographic area, though they will exist somewhere else in the world.
22
Q

Give an example of how the increasing demand of energy, is threatening animal species. πŸ¦‡

A
  • For example in a tropical forest, located in Malaysia, flooding from hydroelectric dams have put bat species at risk of local extinction.

local extinction- where a species will no longer exist in that particular geographic area, though they will exist somewhere else in the world.

23
Q

How else is the biosphere being increasingly exploited, for commercial purposes ? 🏜️

A
  • water- there is also an increase for the demand of water, since the global population is increasing. As the population increases, resources for water are depleting, therefore there is a higher demand for them.
  • In areas such as the Sahara desert, water resources such as rivers and lakes are being over-exploited, meaning the biosphere can be harmed because plants and animals living in that geographical area, that are dependent on water [e.g- deserts], no longer have enough water to survive.
24
Q

How does us exploiting the biosphere, lead to social impacts such as malnutrition ? πŸ–πŸͺΊ

A
  • If animals that we rely on for food die, then means the resources we rely on from the biosphere are also at risk such as food.
  • For example, in the Sahara desert, ostriches live there, which can produce meat and eggs- ; without these resources, our resources of food are depleted- this could then lead to social impacts such as malnutrition [in severe cases death]
25
Q

How else is the biosphere being increasingly exploited, for commercial purposes ? πŸ”­

A
  • mineral resources- humans also exploit the biosphere for mineral resources such as gold, which can be for scientific instruments such as mirrors that are gold-coated in telescopes. [but once again, the demand for mineral resources is increasing]
  • ; this exploitation of the biosphere harms it, as deforestation is caused, because of mines in tropical forests which are used for mining. [minerals are usually extracted by mining them].
26
Q

Explain the social and economic impacts of exploitation of mineral resources, that leads to deforestation. πŸͺ“

A
  • ; deforestation also poses economic and social impacts- tourists may be less areas that have lots of deforestation, meaning companies lose more money, which could result in people losing their jobs.
  • but deforestation also means that there is a reduction of resources that the biosphere provides for us, such as plants that could be used for medicinal drugs.
27
Q

Explain the environmental impacts of exploitation of mineral resources, that leads to deforestation. πŸͺ“

A
  • Deforestation can result in environmental impacts such as trees releasing carbon dioxide [that they once stored] back into the atmosphere, contributing to climate change.