Freshwater and Marine Ecology

January 2021

Volckaert

-Explain the nitrogen cycle + deep sea sediment + climate change

-Photo of shop with big and small fish: fishing down the food web

-mussels and worm advantage of the trophic level in the current on the bottom

Words: calanoid copepods, passive fishing equipment, Ernest H., critical depth

Lemmens

-Seasonal variation of zooplankton

-paleo environmental studies, what are the advantages? Give 2 examples

-why biomanipulation in tropics difficult

-what is nitrification and denitrification (and what is the role for oxygen)

29/01/2018 - Afternoon

Volckaert

• How is the P-cycle linked with the deep sea sediment? Does Global Change have a role in this?

• Figure about estuaries with different species that occur at different salinity concentrations: freshwater, brachish, marine and ultrahaline. Explain and tell everything your know about this figure

• Fishing down the food web: what is this? When does is it occur? Why does is occur? Does it have an impact on the ES and if so, explain. How can this be managed?

• Definitions: diatom, nitrifying chemolithotrophs, alternative states, other I forgot

De Meester

• Which factors influence the species that occur in ephemeral pools?

• Internal eutrophication. Explain.

• Varzea lakes (aka flood pulse concept). Explain.

• What effect does damming have on ES? And normalization?

• Draw scheme linking climate change, biodiversity and society.

29/01/2018 - Morning

Volckaert

• How is the N-cycle linked with the deep sea sediment? Does Global Change have a role in this? (Give scheme, qualitative and semi-quantitative explanation)

• Figure about CO2, HCO3- and HCO3-: explain and comment everything you know about this figure.

• Global change changes ecosystems. How do you know it is global change and not natural variation?

• Explain short these words: Beam trawl, meiobenthos, marine snow and scavenger

De Meester

• At what condition can cyanobacteria occur/grow? Why are they dominant when there is a high grazing pressure of zooplankton?

• Something about biodiversity and ecosystem services monitoring and hotspots

• Explain the river continuum concept

• Make a scheme with all the climate change interactions...