Algal Ecology
1
Ecology: Living in a marine environment
Patterns, Processes, and Mechanisms
Some factors affecting Algal Ecology
Abiotic
I. Light
II. Temperature
III. Salinity
IV. Nutrients
Biotic
I. Herbivory
II. Epiphytism
III. Competition
V. Water Moti
Important Dates
May 9- Practical I & Notebooks Due:
- Study your notebook
- most algae you've already seen
- know your phycologist terms
- bring your MAC
- microscope section
- matching section
- 2 unknowns
- turn in notebooks & MAC to TA at start of lab
Algal Morphology
I. Internal thallus morphologies
II. External thallus morphologies
III.Algal Growth
Unicells- solitary cells can be motile or non motile
ex. Chlamydomonas
Colony- an assemblage of individual cells, variable or
predictable number of cells,
5/13/2014
Costs and benefits of intertidal algal
epiphytism
EPIPHYTES
Laura Anderson
Martone Lab
UBC
Vancouver, CAN
Organisms that grow on plants
(as opposed to rock/soil)
Introduction Biomechanics Ecology Summary
General Benefits Experienced by Epiphytes
Division: Cyanobacteria
blue-green algae
Single class: Cyanophyceae
~150 genera
~4037 species
1
Brief history of photosynthetic organisms on earth
3.45 bya = Cyanobacteria appear and introduce photosynthesis
1.5 bya = first Eukaryotes appeared (nuclear
Division: Chlorophyta
(green algae)
I. General Characteristics
II. Distinguishing Classes
III. Morphology
IV. Classes in Detail
~ 16,000 species
~ 90% freshwater
1
II. Algal taxonomy
Hierarchical system of classification:
Level:
Domain
Group
Division
Clas
Ecology: Living in a marine environment
Patterns, Processes, and Mechanisms
Some factors affecting Algal Ecology
Abiotic
Biotic
I. Light
I. Herbivory
II. Temperature
II. Epiphytism
III. Salinity
III. Competition
IV. Nutrients
V. Water Motion
VI. TIDES
VII
Algal Physiology
I. Photosynthesis in algae
II. Characteristics to distinguish algal
divisions
1
I. Photosynthesis
2
1
PSU : Photosynthetic
Unit = Antennae + rxn
center
Light reactions: solar energy
is harvested and transferred
into the chemical bonds of
Division: Heterokontophyta- 13,151 species
Heterokontophyta II
Class: Phaeophyceae 1,836 species
Order: 19 orders but we will focus on 6
4. Dictyotales- 242 species
- Saxicolous
- Common in tropical waters;
also found locally subtidal
- Pheromone= dictyot
University of California, Santa Cruz
ALGAE OF
Name
Chlorophyta , Cladophorales
Acrosiphonia coalita (Ruprect) R.F. Scagel, D.J .
Garbary, L.Golden & M.J.Hawkes
Location
Davenport Landing , Santa Cruz, California
Habitat
found in low intertidal, growing on
May 28 I will let you know which day you are going!
Please also submit a good question about your
presentation to me electronically. These question will be
uploaded to the website as a study guide for the final.
June 2 & 4 -Student Presentations
Powerpoin
* We aren't endorsed by this school
