Lab 7: Harvesting the Eutrophication Experiment Flashcards

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1
Q

Eutrophication

A

Excess nutrient inputs causing water pollution

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2
Q

Fertilizer

A

Substance added to soil to promote plant growth

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3
Q

Terrestrial microcosm

A

Artificial ecosystem representing a small-scale terrestrial environment

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4
Q

Aquatic microcosm

A

Artificial ecosystem representing a small-scale aquatic environment

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5
Q

Water chemistry

A

Study of the chemical properties of water

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6
Q

Aquatic microorganisms

A

Microscopic organisms living in water

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7
Q

Nutrient cycling

A

Movement and exchange of nutrients in an ecosystem

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8
Q

Primary productivity

A

Rate at which plants and other photosynthetic organisms produce organic compounds

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9
Q

Hypotheses

A

Proposed explanations for a phenomenon

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10
Q

Water quality

A

Measure of the condition of water relative to the requirements of one or more biotic species

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11
Q

Phytoplankton

A

Microscopic photosynthetic organisms that float in water

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12
Q

Biomass

A

Total mass of living organisms in a given area or volume

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13
Q

Autoclave

A

Device used to sterilize equipment and supplies by subjecting them to high pressure and temperature

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14
Q

Chlorophyll concentration

A

Amount of chlorophyll present in a given sample

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15
Q

Phytoplankton biomass

A

Total mass of phytoplankton in a given area or volume

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16
Q

Whatman filter paper

A

High-quality filter paper used for laboratory filtration

17
Q

Büchner funnel

A

Laboratory funnel used for vacuum filtration

18
Q

Centrifuge tube

A

Tube used to hold samples for centrifugation

19
Q

Ethanol

A

Alcohol used as a solvent in laboratory procedures

20
Q

Spectrophotometer

A

Instrument used to measure the intensity of light at specific wavelengths

21
Q

Absorbance

A

Measure of the amount of light absorbed by a sample

22
Q

Ammonium concentration

A

Amount of ammonium ions present in a given sample

23
Q

Phosphate concentration

A

Amount of phosphate ions present in a given sample

24
Q

Shoot height

A

Vertical length of the main stem of a plant

25
Q

Chlorophyll content

A

Amount of chlorophyll present in a plant or leaf

26
Q

Microcentrifuge tube

A

Small tube used for centrifugation of small volumes of liquid

27
Q

Lugol’s iodine

A

Solution used to stain and preserve biological samples

28
Q

Palmer-Maloney counting slide

A

Slide used for counting cells under a microscope

29
Q

Light microscope

A

Microscope that uses visible light to magnify objects

30
Q

Gravel

A

Small stones used in the bottom of microcosms for drainage

31
Q

Soil mixture

A

Blend of soil and other materials used as a growth medium for plants

32
Q

Diluted sample

A

Sample that has been mixed with a solvent to reduce its concentration

33
Q

Chlorophyll a

A

Type of chlorophyll responsible for photosynthesis

34
Q

Chlorophyll b

A

Type of chlorophyll that assists in photosynthesis

35
Q

Total chlorophyll

A

Combined amount of chlorophyll a and chlorophyll b in a sample