Waldbaugrundlagen an der Hochschule Für Nachhaltige Entwicklung | Karteikarten & Zusammenfassungen

Lernmaterialien für Waldbaugrundlagen an der Hochschule für nachhaltige Entwicklung

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TESTE DEIN WISSEN

Which types of root systems do you know? Name one exemplary species per system type.

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TESTE DEIN WISSEN

tap-root - >Abies alba

heart-root -> Fagus, Tilia

shallow-roots -> Picea abies


intermediary types are possible

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TESTE DEIN WISSEN

What is the meaning of the "multifunctional forestry" concept?

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TESTE DEIN WISSEN


As many functions as possible (useful, protective, recreational ...) - on the same area - at the same time

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TESTE DEIN WISSEN

What is a forest stand?? Which features make up the borders to neighboring stands?

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TESTE DEIN WISSEN

-a collective of trees interacting with each other and can be characterized by a sufficient uniformity in species composition, development phase, age, and structure, distinguishing it from neighboring stands. its size is sufficient to develop a typical microclimate

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TESTE DEIN WISSEN

Which is the modern taxonomic definition of species?

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TESTE DEIN WISSEN

a community of individuals that can potentially produce fertile offspring

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TESTE DEIN WISSEN

which ecological criteria define a forest?

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TESTE DEIN WISSEN

vegetation dominated by trees

- trees crowns should create a canopy

- trees interact/influence each other

- special forest climate (Microclimate)

- above-ground stratification: tree, shrub, herbal, moss layers


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TESTE DEIN WISSEN

How do you define "plant communities" in a vegetation systematics context?

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TESTE DEIN WISSEN

Artificially standardized, site specific association of plants


((classified site-dependent species communities reflect differences in site quality. They respond to changes in their environment by altered ranges, composition, and stability


Plants of different species that typically appear together and influence each other and create an own type))

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TESTE DEIN WISSEN

Which two main reasons limit the applicability of the "climax forest concept" for practical application?

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TESTE DEIN WISSEN

Theoretical construction while human interference not included, a snapshot in time (temporal limitation) 



Neglects changing site conditions and therefore changes in plant communities that naturally occure, 

Neglects natural small-scale differences (patches) and changes in time

à forestry: the assumption that climax community is the most stable community of a site leads to misleading recommendations like focussing on climax species for silviculture

-> after disturbance the assumption to know for what species composition the ecosystems strives for -> neglecting role of successional states and promoting the climax-species composition to support


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TESTE DEIN WISSEN

What is the difference between zonal and azonal forest vegetation? Name one example per group/vegetation type.

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TESTE DEIN WISSEN

zonal: dominant effect of climate-> broad-leaved evergreen, Congo basin

azonal: the dominance of geomorphology + soil ->  Mangrove vegetation, Australia 

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TESTE DEIN WISSEN

Which are the four site factors?

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TESTE DEIN WISSEN

radiation, heat, water availability, and nutrient supply.


climate, relief, soil biotic factors

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TESTE DEIN WISSEN

Which wavelength interval is relevant as "photosynthetically active radiation", and is the intensity (rate) of photosynthesis equal throughout this range?

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TESTE DEIN WISSEN

400 to 700 nm -> PAR

no, it's not equal, it reaches its highest points around 450 and 680nm 

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TESTE DEIN WISSEN

Explain the concept of a population?

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TESTE DEIN WISSEN

all individuals of the same species in a defined (given) area  that are genetically related to each other over several generations 

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TESTE DEIN WISSEN

How do you define the point of light compensation?

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TESTE DEIN WISSEN

Light intensity where Energy production by photosynthesis is equal to energy consumption by respiration

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Q:

Which types of root systems do you know? Name one exemplary species per system type.

A:

tap-root - >Abies alba

heart-root -> Fagus, Tilia

shallow-roots -> Picea abies


intermediary types are possible

Q:

What is the meaning of the "multifunctional forestry" concept?

A:


As many functions as possible (useful, protective, recreational ...) - on the same area - at the same time

Q:

What is a forest stand?? Which features make up the borders to neighboring stands?

A:

-a collective of trees interacting with each other and can be characterized by a sufficient uniformity in species composition, development phase, age, and structure, distinguishing it from neighboring stands. its size is sufficient to develop a typical microclimate

Q:

Which is the modern taxonomic definition of species?

A:

a community of individuals that can potentially produce fertile offspring

Q:

which ecological criteria define a forest?

A:

vegetation dominated by trees

- trees crowns should create a canopy

- trees interact/influence each other

- special forest climate (Microclimate)

- above-ground stratification: tree, shrub, herbal, moss layers


Mehr Karteikarten anzeigen
Q:

How do you define "plant communities" in a vegetation systematics context?

A:

Artificially standardized, site specific association of plants


((classified site-dependent species communities reflect differences in site quality. They respond to changes in their environment by altered ranges, composition, and stability


Plants of different species that typically appear together and influence each other and create an own type))

Q:

Which two main reasons limit the applicability of the "climax forest concept" for practical application?

A:

Theoretical construction while human interference not included, a snapshot in time (temporal limitation) 



Neglects changing site conditions and therefore changes in plant communities that naturally occure, 

Neglects natural small-scale differences (patches) and changes in time

à forestry: the assumption that climax community is the most stable community of a site leads to misleading recommendations like focussing on climax species for silviculture

-> after disturbance the assumption to know for what species composition the ecosystems strives for -> neglecting role of successional states and promoting the climax-species composition to support


Q:

What is the difference between zonal and azonal forest vegetation? Name one example per group/vegetation type.

A:

zonal: dominant effect of climate-> broad-leaved evergreen, Congo basin

azonal: the dominance of geomorphology + soil ->  Mangrove vegetation, Australia 

Q:

Which are the four site factors?

A:

radiation, heat, water availability, and nutrient supply.


climate, relief, soil biotic factors

Q:

Which wavelength interval is relevant as "photosynthetically active radiation", and is the intensity (rate) of photosynthesis equal throughout this range?

A:

400 to 700 nm -> PAR

no, it's not equal, it reaches its highest points around 450 and 680nm 

Q:

Explain the concept of a population?

A:

all individuals of the same species in a defined (given) area  that are genetically related to each other over several generations 

Q:

How do you define the point of light compensation?

A:

Light intensity where Energy production by photosynthesis is equal to energy consumption by respiration

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