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BTNY203 Marine and Freshwater Botany

The diversity, physiology and ecology of marine and freshwater plants, algae and cyanobacteria.

Laboratory skills will be developed through three practical modules, enabling students to become familiar with these organisms and the environment in which they are found. The practical modules will provide the opportunity for students to design and perform experiments and present this work both orally and in written reports.

Lectures will cover the morphological and physiological adaptations of the phototrophs that enable them to thrive in marine and freshwater habitats with the emphasis on New Zealand environments. The impact of human activities on these organisms will be explored, including global climate change, eutrophication and invasive species.

Paper title Marine and Freshwater Botany
Paper code BTNY203
Subject Botany
EFTS 0.1500
Points 18 points
Teaching period Second Semester
Domestic Tuition Fees (NZD) $1,038.45
International Tuition Fees (NZD) $4,492.80

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One of (BIOL 112, BIOL 113, BIOL 123, BTNY 111, CELS 191, HUBS 191, HUBS 192) and one of (ECOL 111, MARI 112).
BTNY 225
Schedule C
Teaching staff
Dr Linn Hoffmann
Dr Chris Hepburn
Dr Tina Summerfield
Paper Structure
  • Section I: Aquatic photosynthesis: Diversity and evolution
  • Section II: Marine botany: Coastal ecosystems
  • Section III: Freshwater botany
Teaching Arrangements
26 lectures, 8 labs
Textbooks are not required for this paper.
Course outline
View the course outline for BTNY 203
Graduate Attributes Emphasised
Critical thinking.
View more information about Otago's graduate attributes.
Learning Outcomes
Students who learn successfully in this paper will:
  • Be familiar with the diversity and evolution of marine and freshwater photosynthetic organisms
  • Understand the importance of marine and freshwater primary producers in carbon sequestration and nutrient cycling
  • Understand the role of these organisms in marine and freshwater ecosystems, including the impact of toxic bloom formation, invasive species and global climate change
  • Understand relevant experimental design and analysis principles
  • Extend skills in written and oral communication

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Second Semester

Teaching method
This paper is taught On Campus
Learning management system


Stream Days Times Weeks
L1 Monday 10:00-10:50 28-34, 36-41
Friday 10:00-10:50 28-34, 36-41


Stream Days Times Weeks
Attend one stream from
P1 Tuesday 14:00-16:50 28-34, 36-41
P2 Thursday 14:00-16:50 28-34, 36-41