12 Questions
What are the three major nutrients found in all biological tissues?
Carbon, Nitrogen, Phosphorus
List the different forms of phosphorus mentioned in the text.
PO4, TP (particulate), Organic and inorganic forms
What are the common components found at all trophic levels?
Carbon, Nitrogen, Phosphorus
What is the most abundant gas in the Earth's atmosphere?
Dinitrogen gas (N2)
Name some organic compounds where nitrogen is an integral component.
Amino acids, proteins, urea, DNA, RNA
Describe the different oxidation states in which nitrogen can be found.
Both oxidized species (e.g., nitrate (NO3) and nitrite (NO2)) and reduced species
What are the main forms of dissolved phosphorus in aquatic systems?
DOP and DIP
Describe the process of nitrification by chemotrophs.
(NH4 + O2 -> NO3 + 2H+)
What is the principal site for nitrification and denitrification in Lake Rotoiti, NZ?
Oxycline at 20-25m
When does nitrogen fixation by heterocystic cyanobacteria show maximum activity?
When DIN is limited
What are the main forms of particulate organic matter in aquatic systems?
PON and POP
Explain the process of denitrification by anaerobic heterotrophs.
(NO3 + DOM -> N2 + CO2)
Learn about biogeochemistry and the nitrogen, phosphorus, and carbon cycles in freshwater ecosystems. Understand the different forms of nutrients and the conditions necessary for their availability for growth. Explore the importance of carbon, nitrogen, and phosphorus in maintaining water quality.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
