How tree species, tree size, and topographical location influenced tree transpiration in northern boreal forests during the historic 2018 drought

Autor: Pantana Tor-ngern, Nataliia Kozii, Hjalmar Laudon, Ram Oren, Jose Gutierrez Lopez, Niles J. Hasselquist
Přispěvatelé: Department of Forest Sciences
Rok vydání: 2021
Předmět:
0106 biological sciences
010504 meteorology & atmospheric sciences
Vapour Pressure Deficit
drought
Forests
01 natural sciences
Trees
Taiga
General Environmental Science
Transpiration
Global and Planetary Change
CLIMATE-CHANGE
REGIONAL DROUGHT
Ecology
biology
SAP-FLOW
NORWAY SPRUCE
tree transpiration
PICEA-ABIES
Droughts
Europe
Overcast
1181 Ecology
evolutionary biology
MIXED FOREST
tree size
Stomatal conductance
STOMATAL CONDUCTANCE
010603 evolutionary biology
SUMMER DROUGHT
sap flow
Environmental Chemistry
Ecosystem
Precipitation
Picea
1172 Environmental sciences
0105 earth and related environmental sciences
Sweden
FINE-ROOT BIOMASS
topographic position
Picea abies
15. Life on land
Scotts pine
biology.organism_classification
Agronomy
13. Climate action
WATER-BALANCE
North America
Environmental science
Zdroj: Global Change Biology. 27:3066-3078
ISSN: 1365-2486
1354-1013
DOI: 10.1111/gcb.15601
Popis: Trees in northern latitude ecosystems are projected to experience increasing drought stress as a result of rising air temperatures and changes in precipitation patterns in northern latitude ecosystems. However, most drought-related studies on high-latitude boreal forests (>50 degrees N) have been conducted in North America, with few studies quantifying the response in European and Eurasian boreal forests. Here, we tested how daily whole-tree transpiration (Q, Liters day(-1)) and Q normalized for mean daytime vapor pressure deficit (Q(DZ), Liters day(-1) kPa(-1)) were affected by the historic 2018 drought in Europe. More specifically, we examined how tree species, size, and topographic position affected drought response in high-latitude mature boreal forest trees. We monitored 30 Pinus sylvestris (pine) and 30 Picea abies (spruce) trees distributed across a topographic gradient in northern Sweden. In general, pine showed a greater Q(DZ) control compared to spruce during periods of severe drought (standardized precipitation-evapotranspiration index: SPEI
Databáze: OpenAIRE
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