Altfragen

1.What are effects on hydropeaking on aquatic communities?

a)      Stranding of fish

b)      Increased growth of macrophytes

c)      None of them

d)      Decrease of macroinvertebrate drift

2.The concept of environmental flow addresses

a)      The physical retention of the water within the system

b)      The effects of flood protection measures of the aquatic community

c)      The vertical connection with the hyporheic zone

d)      Quantity, quality and timing of natural flow conditions

3.What is zoogeography?

a)      The science of biogeography that is concerned with geographic distribution of animal species

b)      The science of biogeography that is concerned with geographic distribution of zoos

c)      The science of geology that is concerned with geographic distribution of animal species

d)      The sicence of biogeography that is concerned with geographic distribution of plant species

4.Why is there no beaver?

a)      Maybe because of evolutionary constraints

b)      Maybe because neither lakes nor streams are permanent

c)      Maybe because of intraspecific competition

d)      Maybe because of trophic interactions

6. Ancient monomers include

a) amino acids 

b) monosaccharides

c)lyergic acids

d) mefenamic acids

7. In which of these cycles the atmosphere does not play a significant role?

a) nitrogen cycle

b) carbon cycle

c) phosphor cycle

d) water cycle

8. Competition among species may result in?

a) trout-like fish

b) biological invasions

c) lower survival

d) higher growth

9. A highly relevant component in the phosporus cycle in inland waters is

a) Uptake by primary producers

b) Accumulation in sediments

c) Uptake by primary producers AND Accumulation in sediments

d) solar radiation

10.Oligotrophic lakes have a

a) low secchi depth.

b) provide a lot of food for primary consumers.

c) are characterized by very low oxygen concentrations.

d) have a low nutrient status.

11. What wetland type is this? Open wetlands that periodically retain shallow surface water, fluctuating due to the influence of surface water, groundwater, precipitation, and seepage can include rushes, reeds, grasses, sedges, shrubs, and emergent, submerged, and floating macrophytes.

a) Bog

b) Marsh

c) Fen

d) Swamp

12. What is a habitat?

a) environment characterized by both physical and biological features, in which a particular organism can find food, shelter, protection and mates for reproduction.

b) a community of living organisms in conjunction with the nonliving components of their environment interacting as a system.

c) environment characterized by physical features, in which a particular community or species live.

d) the territory, where an organism lives defined by geographical boundaries.

13. Niche builders are also called

a) Beavers

b) Keystone species

c) Freemasons

d) Ecosystem engineers

14. The hyporheic zone of a river is

a)the photic zone of the river.

b)the stream water column.

c) the flooding area of a low land river

d) the stream bed where surface water and ground water mix.

15. All life shares several characteristics, which include

a) None of the provided answers

b) Adoption and Reproduction

c)Homeostasis and Heterogeneity

d)Organization and Recreation

16. What is NOT a spatial evolutionary mechanism

a) Parapatry

b) Sympatry

c)Allopatry

d) Ecological opportunity

17. Which one of the following is NOT a mitigation measure of damming?

a) Sediment management

b) Fishing quota

с)Tributary continuum

d) Fish bypass

Aquatic insects subsidies

Concepts in Stream ecology

19. Indirect effect of climate change:

a.) more droughts

b.) change of the hydrological cycle

c.) water temperature rises

d.) water use increases

20. Units of life

a) individuals, population, community

b) individuals, population, metapopulation ?

c) individuals, community, biosphere

22. What is a proper scientific name

a.) family and genus

b.) family and species

c.) genus and species

24. Non-point causes of the climate change

a.) factories

b.) human settlements

c.) agricultural field

25. Evolution forces

a.) natural selection

b.) adaption

c.) variation of genes

d.)

27. organisms that have a profound effect on others are called

a.) umbrella species

b.) keystone species