1.4.9 Conservation Worksheet - PDST · Web viewThere is a _____ of the environment to _____ and the...
Transcript of 1.4.9 Conservation Worksheet - PDST · Web viewThere is a _____ of the environment to _____ and the...
Name: _________________________
1.4.9 Human Impact on an Ecosystem 2Conservation Worksheet
ConservationHave you seen on of these recently?
It is a Dodo and has been extinct since 1681.
How did it happen?
What happened to the dodo? {Not examinable}
• In 1598 Portuguese and Dutch sailors were the first people to live on the island of Mauritius.
• With them they brought pigs, dogs, rats and even monkeys.
• They killed dodos for food and by 1681 (83 years later) they were extinct.
Conservation
• If you are connected to the internet click on the link below to view a web page on the
Relationship of the Dodo Bird and the Calvaria Tree {Not examinable}
http://geology.wcedu.pima.edu/~enicksin/new.html
What is Conservation?Conservation is the __________________ and _________________________________ of
_________ ___________________ and the _______________________________.
Benefits of Conservation
• Existing environments
___________________________________________________________
• Endangered species
_____________________________________________________________
• The balance of nature
____________________________________________________________
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Name: _________________________
• ____________________________________________________________________ are
reduced
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Name: _________________________
One Conservation practice from one of the following areas
There is a _______________________________________________________ of the environment
to ____________________________ and the ________________________ of its natural resources.
AgricultureOne Conservation practice from one of the following areas is required:
Mixed farming
Crop rotation
Biological controls
Gene banks
Mixed farmingWhat is mixed farming?
Farming system where both ________ (crops) and ____________ (livestock) farming is carried out.
Conservation and Mixed Farming• Animals _____________________ and help to maintain __________________________
and _________________________________ of artificial fertilisers used.
• Increases __________________ and soil __________________________________ and
improves ___________________________.
• If rotations of various crops and forage legumes are used, they
___________________________
• Reduce ________________________________.
• Recycling wastes __________________________________________________
Crop rotationWhat is crop rotation?
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Re-planting, Broadleaf/conifer mixForestry
Fishing Net size, Quotas, Re-stockingFisheries
Mixed farming, Crop rotationBiological controls, Gene banksAgriculture
Conservation PracticeArea
Name: _________________________
____________________________________________________ in a given field from one growing
season to the next.
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Name: _________________________
Conservation and Crop Rotation
• Different crops ______________________________________ from the soil; some crops
________ particular nutrients that others take away.
• Crop rotation can also ______________________________________ and avoid the build
up of _________________ and __________ that often occur when one species is continuously
grown.
Biological controlsWhat are Biological controls?
Biological control is a method of __________________________ (including __________ ) and
diseases in agriculture that ____________________________, ____________________ or other
___________________________, rather than introduced chemicals.
Conservation and Biological Controls
• Ladybird larva eating woolly apple aphids
Advantages:
• __________________________________________________
• No ____________________________________ left on plants
• ___________________ of chemicals into soil or watercourses
Conservation and Biological Controls
• Diagram illustrating the natural
enemies of cabbage pests
Conservation in action in AgricultureConventional agriculture uses _____________________ and _______________________________
This has contributed to _______________________________ through ______________________,
________________________ and _________________________.
These also have negative effects on the soil, water and air qualities. Global climate, wildlife and
biodiversity are also affected.
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Name: _________________________
Is soil degradation serious?
• Soil degradation due to erosion and compaction processes is probably the
__________________ _____________________________________ caused by conventional
agriculture.
• About ____________________________________ of land are lost per year for agricultural
uses, due to soil degradation processes
Note: 10,000,000 ha = 24,700,000 acres = 95,500 square miles. Ireland = 39,690 square miles
A Dust Storm
Soil being blown away
Can you suggest what should be done?
• Stop ________________________________________
• Reduce the ___________________________________
• Increase the amount of ‘_____________________’ land
Gene BanksWhat are gene banks?
Gene banks are _________________________________________________, be it plant or animal.
In plants, this could be _____________________________ from the plant, or the seeds themselves.
In animals, this is the ______________________________________________________________.
Conservation and Gene BanksThis is one way scientists have of ____________________________________________________
_______________________________________________________________________________.
In plants, it is possible to ___________________________________________________, however,
in animals, a living female is required for ___________________________________________.
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Name: _________________________
Conservation and Gene BanksArtificial insemination of farm animals is very common in today's agriculture industry.
It provides an ____________________________________ for a livestock grower to breed their
herds with males ____________________________________, e.g. good beef quality, high milk
yield, good wool quality, etc.
FisheriesOne Conservation practice from one of the following areas is required:
Fishing Net size
Quotas
Re-stocking
Fishing Net sizeWhat is net mesh size?
This refers to how _______________________________________________ or spaces enclosed by
the threads of a net are.
Conservation and Fishing Net Size
• The use of small-mesh nets can result in
_____________________________________________
• Using larger meshed nets to
_______________________________________________________
________________________________________________________________________________
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Name: _________________________
Different types of nets
Square Mesh Diamond Mesh
Square mesh – does not alter its shape under tension – ____________________________________
Diamond mesh netting (left) – closes under tension (right) and _____________________________________
Fishing QuotasWhat is a fishing quota?
______________________________________________________________________________
________________________________________________________________________________
This national quota allocation is ___________________________ into quotas for specific _______,
_____________, _______________ or ______________________, e.g. producers' organisations.
Fishing QuotasWhy have quotas?
Over fishing has _____________________________ at sea
Fish quotas (maximum amount allowed to be caught) have been assigned to different countries to
_____________________________________________________________________________.
Conservation and Fishing Quotas
• Helps to prevent the
_____________________________________________________________
• Gradually _______________________________________ and helps to re-establish
populations
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Name: _________________________
• Attempts to maintain fishing at
____________________________________________________
Re-stockingWhat is the purpose of re-stocking?
To achieve a _________________________________________________________ of that species
_________________ of species into areas where they have not naturally occurred is not encouraged
Can you suggest why not? __________________________________________________________
________________________________________________________________________________
Conservation and Re-stocking
• Re-stocking attempts to
__________________________________________________________
• Increases stocks for
_____________________________________________________________
Forestry
ForestryOne Conservation practice from one of the following areas is required:
Re-planting
Broadleaf/conifer mix
Forestry Re-planting
• Ensures __________________________________ of those forests that are periodically
harvested for timber.
• Allows foresters to __________________________________________________ for the
forest.
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Deciduous Forest
Multi-layered Forest
Coniferous Forest
Ground layer in open Deciduous
Forest
Name: _________________________
• Helps the forest ______________________________________. Replanting is now a
common practice after harvests and wildfire.
• Forests that aren't replanted after a natural disaster, can take
_____________________________.
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Name: _________________________
Broadleaf/Conifer mix
• Conifers rapidly _________________________________________________ to replace
imports
• Broadleaf trees also provides timber for industry
______________________________________
• Broadleaf planting forms ___________________________ and provides
__________________, ___________________________, adds to the landscape and
_____________________________
Conservation in action in Forestry
• The selection and management of the _______________________________________________ of the woodland• _________________________________________ of broadleaved species in plantations
• Leave greater areas of __________________________________________. This will
encourage the growth of an ______________________________________ by increased light
penetration
Conservation in action in Forestry
• Encourage the planting of woodland plots with the greatest woodland edge
• Enhance the _______________________ of wooded areas by leaving some
________________; and increasing the number of
_________________________________________
• Promote _________________________ rather than ________________________ as the
dominant harvesting technique
Need to know
• Define the term: Conservation.
• Outline any one practice of conservation from agriculture, forestry or fisheries.
END
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