14 – To Investigate Quantitatively the Impact of Variation in Abiotic Factors on the Distribution and Abundance of a Species (LC 2027) (Leaving Cert Biology): Flashcards
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Abiotic factors
Abiotic factors
Non-living environmental conditions
Distribution (ecology)
Distribution (ecology)
Where organisms are found in an ecosystem
Abundance (ecology)
Abundance (ecology)
Number of organisms in a specific area
Quadrats
Quadrats
Square frames used to sample small areas systematically
Random sampling purpose
Random sampling purpose
Ensures unbiased results by preventing conscious bias
Line transects
Line transects
Rope/tape across habitat recording organisms at intervals
Belt transects
Belt transects
Line transects combined with quadrats at regular intervals
Capture-recapture method use
Capture-recapture method use
Estimates population sizes of mobile animals
Population estimate formula
Population estimate formula
rac{ ext{1st marked} imes ext{2nd catch}}{ ext{marked in 2nd}}
Aspect (abiotic factor)
Aspect (abiotic factor)
Direction a habitat faces, influencing sunlight exposure
Soil pH influences
Soil pH influences
Nutrient availability and plant species composition
Light intensity affects
Light intensity affects
Photosynthesis and plant growth patterns
Temperature affects
Temperature affects
Metabolic rates and species survival
Frequency calculation
Frequency calculation
rac{ ext{Quadrats with species}}{ ext{Total quadrats}} imes 100
Quadrats best used for
Quadrats best used for
Plants and slow-moving animals (woodlice, snails)