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21 Cards in this Set
- Front
- Back
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What constitutes tall woodland?
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Trees taller then 30m with sparse (10-30%) foliage cover.
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What constitutes tall open woodland?
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Trees taller then 30m with very sparse (<10%) foliage cover.
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What do closed forest, open forest, woodland and open woodland have in common?
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Trees 10-30m tall
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What is the height of trees in low forests/woodlands?
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5-10m
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How tall are shrubs in scrub and tall shrubland?
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2-8m
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How tall are shrubs in heath and low shrubland?
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0-2m
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How many major MajorVegetationGroups are there in Australia?
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23
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What is an EVC?
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One or more floristic communities that appear to be associated
with a recognisable environmental niche |
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How many EVC's are there?
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300
20 simplified native veg groups 34 sub groups |
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What are bioregions?
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Landscape scale classification including
-climate -geomorphology -soils -vegetation |
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What is the process of creating a vegetation map?
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-Select survey sites
-conduct field surveys, floristics, structure etc -use aerial/satellite images to determine signature -delineate areas of the same signature |
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What are some examples of vegetation related data you could collect ?
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Structure
-tree height -cover -DBH -tree density -shrub density Floristics -dominant canopy sp -subdominanat canopy spp -dominant shrub species |
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What are some methods for vegetation sampling?
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Visual estimates
• Total counts • Frame quadrats • Transects • Point quadrats • Harvesting • Plotless sampling • Seed-bank soil cores • Seed traps |
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Which veg method should you use?
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Depends on
your objective time resources vegetation type habitat type and shape accuracy required etc use several and compare |
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What are total counts?
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Assessing density of large or obvious plants
that are at low density • Every individual of a species or a number of species in the study area is counted no sampling bias |
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what are fram quadrats?
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Assessing density of large or obvious plants
that are at low density • Every individual of a species or a number of species in the study area is counted |
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What are plotless techniques?
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Measure the space between things
- Useful when plots/quadrats aren’t practical - Works better for non-random distributions - Often used in tree density sampling |
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What are som measurments that can be taken of trees?
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Height
• Diameter at Breast Height (DBH) • Condition • Openness of canopy • Presence of dead wood • Presence of hollows • Presence of epicormic growth etc. |
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What do tree measurements tell us?
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Age of trees
• History of habitat • Condition of habitat • Biodiversity value – what species might use habitat |
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What are the physical properties of water?
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– density
– viscosity – surface tension – thermal properties – erosive power |
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What are the chemical properties of water?
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– H2O
– pH – capacity to contain dissolved oxygen – capacity to carry solutes |
