Bio 112 Lab Midterm Prep
Scientific drawing: Size of drawing/ size of object
Size of Object: FOV diameter/ # of objects that fit across FOV
Dissolved Oxygen: Temperature in degrees Celsius. The colder the water the more dissolved oxygen.
Low tolerance values indicate the organism can only live in good quality bodies of water.
Higher the number the greater the species richness and species evenness.
Two populations with the same total number of species could be uneven; the even population would have a higher index value.
Species Diversity takes into account two factors: Species Richness - the number of different species present in a community Species Evenness - how evenly the total number of individuals is proportioned into each species
Macroinvertebrates- inhabit streams, no vertebrae, visible without microscope (1-3 year life span), abundant
Equipment: D-net, kick-net, surber sampler
Macroinvertebrates are frequently used as bioindictors in biomonitoring.
Bioindicators organisms that are used to monitor changes in environment
Biomonitoring use of living organisms or their responses to determine the quality of environment
Examples: mayfly nymphs, alderfly larvae, caddisfly larvae plus lots of aquatic worms.
Dissolved oxygen (DO): concentration determined by temperature and the amounts of water mixing or turbulence, decomposing organic matter, and pollution
Low DO water is polluted.
Biotic Index pollution tolerance index to access health of a stream. High phosphorus and nitrogen concentrations, not useful for other forms of chemical pollution.
Riparian Zone land adjacent to rivers, streams, and lakes. Buffer for disturbance, aid in stability, erosion
Biodiversity rare types of plants that can’t survive elsewhere
LAB A:
Protists: Unicellular eukaryotes Amoeba group- use pseudopodia (cytoplasmic extensions) for locomotion and feeding
Nucleus: