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Ornithogenic tundra andsoil respiration
Written exam biology/ecology
Dr.RainerLehmannFWSHannover-Bothfeld
PEIWorkshop Rovereto 12.04.2017
Thick-billed murre,Lomvia(AureliaLampasiak)
Dr.ChristophWüthrichUniversityof Basel
Switzerland
Fulmar,Fulmarus glacialis
Vegetation pattern of the arctic tundra„Normal“oligotrophic tundra• sparse plantcover• sameclimate• nutrient-poor
Ornithogenic tundra• dense and thick plantcover• same climate• nutrient-rich
PEIWorkshop Rovereto 12.04.2017
Vegetation pattern of the arctic tundra„Normal“oligotrophic tundra• sparse plantcover• sameclimate• nutrient-poor
Ornitogenic tundra• dense and thick plantcover• same climate• nutrient-rich
PEIWorkshop Rovereto 12.04.2017
• rockcliff
Nutrien sources andrelationship
PEIWorkshop Rovereto 12.04.2017
Oxyria digyna
Kittiwake,Rissa tridactyla
Nutrient sources andrelationship
Mixingof differentwaters:• cold,O2-richpolar water• warm,nutrient-rich Golfstream water• high productive area• fish-rich,food for seabirds• nutrient transport sea – land• eutrophication →ornithogenic tundra
PEIWorkshop Rovereto 12.04.2017
CO2 emission
13.gradeBiologyExam,12.04.2017
Exercise 1:Generalgeo-ecological situation
1.1 Characterise the ecological situation ofthe HighArctic of Spitsbergen (Fig.1).Complete the empty rectangles inthefigure:Thebroader the line the higherthe value.
Materialtransport inthe arctic tundra
Fig.1:Zones of anarctic bird clifftundra
PEIWorkshop Rovereto 12.04.2017
Exercise 1:Generalgeo-ecological situation
1.2 Compare the special stuation presented inexercise 1.1to thenormal,oligotrophic tundra.Use alsoFig.2to explain the reasons forthe significant differences.Drawimportant informations into themap.
Fig.2:Map of the NorthPolarSea
PEIWorkshop Rovereto 12.04.2017
0
5000
10000
15000
20000
25000
30000
35000
40000
Ca++ P2O5 Mg++ K+
mg/kgTG
Soilnutrientcontentbirdcliff"Irgens"
VFZ COCH OXYR1 OXYR2 SAXI1 SAXI2
Exercise 2:Nutrients
2.1 Constitute the differentnutrient contents and respond to the differentnutrient behavior (Fig.3).Use the informations of exercise 1.1and 1.2.
Fig.3:Nutrient contents of the differentzones of the bird cliff tundra
PEIWorkshop Rovereto 12.04.2017
0
5
10
15
20
25
30
VFZ COCH OXYR1 OXYR2 SAXI1 SAXI2
gCO
2m-2d-1
Soil respirationbird cliff "Irgens"
"-1°C" "4°C" "12°C"
Exercise 3:Soil respiration
3.1 Fig.4shows soil respitration values of bird cliff „Irgens“.Explain the differences.
Fig.4:Soil respiration at anarctic bird cliff tundra.
PEIWorkshop Rovereto 12.04.2017
Fig.6:Soil temperatures and precipitationFig.5:Soil respiration of the oligotrophic tundra
Exercise 3:Soil respiration
3.2 Fig.5 shows soil temperatures and pricipitation data.Illustrate therespiration at the test sites 11to 15of the oligotrophic tundra (Fig.5).Estabish arelationship between respiration changes and weatherprogress (Fig.6).
Thank you for your attention
PEIWorkshop Rovereto 12.04.2017
Dr.RainerLehmannFWSHannover-Bothfeld [email protected]
