Lecture 5 - Guest Lecture

Question 1

Periphyton

Answer 1

algae and microorganisms in a photosynthetic biofilm community growing on submerged surfaces

Question 2

Algae

Answer 2

polyphyletic group of organisms typically exhibiting common traits

• aquatic habitats, oxygenic photosynthesis, simple structural organization, highly diverse

Question 3

Periphyton Succession

Answer 3

initial colonization -> early stages of development -> well-developed periphyton mat -> sloughing event -> post sloughing

Question 4

Biogeochemical Cycling

Answer 4

the natural pathways of essential elements/chemicals as they move through ecosystems

Question 5

Glyphosate

Answer 5

broad spectrum, post-emergence herbicide

• active ingredient in Round-Up

Question 6

Bioconcentration

Answer 6

intake and retention of a substance in an organism entirely by respiration and uptake/adsorption from water