Monteith J (1995) Accommodation between transpiring vegetation and the convective boundary
layer. J Hydrol 166:251–263
Mortley D, Bonsi C, Loretan P, Hill W, Morris C (2000) High relative humidity increases yield,
harvest index, flowering, and gynophore growth of hydroponically grown peanut plants. Hortic
Sci 35:46–48
Niglas A, Kupper P, Tullus A, Sellin A (2014) Responses of sap flow, leaf gas exchange and growth
of hybrid aspen to elevated atmospheric humidity under field conditions. AoB Plants 6:plu021
Niglas A, Alber M, Suur K, Jasińska AK, Kupper P, Sellin A (2015) Does increased air humidity
affect stomatal morphology and functioning in hybrid aspen? Botany 93:243–250
Niglas A, Papp K, Sękiewicz M, Sellin A (2017) Short-term effects of light quality on leaf gas
exchange and hydraulic properties of silver birch (Betula pendula). Tree Phys 37:1218–1228
Norby RJ, Kozlowski TT (1982) The role of stomata in sensitivity of Betula papyrifera seedlings to
SO2 at different humidities. Oecologia 53(1):34–39
Novák V, Vidovič J (2003) Transpiration and nutrient uptake dynamics in maize (Zea mays L.) Ecol
Model 166:99–107
Osonubi O, Davies W (1980) The influence of plant water stress on stomatal control of gas
exchange at different levels of atmospheric humidity. Oecologia 46:1–6
Parts K, Tedersoo L, Lõhmus K, Kupper P, Rosenvald K, Sõber A, Ostonen I (2013) Increased air
humidity and understory composition shape short root traits and the colonizing ectomycorrhizal
fungal community in silver birch stands. For Ecol Manag 310:720–728
Possen BJ, Oksanen E, Rousi M et al (2011) Adaptability of birch (Betula pendula Roth) and
aspen (Populus tremula L.) genotypes to different soil moisture conditions. For Ecol Manag
262(8):1387–1399
Rodrigues CR, Silveira JA, Viégas RA, Moura RM, Aragão RM, Silva EN (2016) Combined
effects of high relative humidity and K+ supply mitigates damage caused by salt stress
on growth, photosynthesis and ion homeostasis in J. curcas plants. Agric Water Manag
163:255–262
Rohula G, Tulva I, Tullus A, Sõber A, Kupper P (2017) Endogenous regulation of night-time water
relations in hybrid aspen grown at ambient and elevated air humidity. Reg Environ Chang
17:2169–2178
Rosenvald K, Tullus A, Ostonen I, Uri V, Kupper P, Aosaar J, Varik M, Sõber J, Niglas A, Hansen
R (2014) The effect of elevated air humidity on young silver birch and hybrid aspen biomass
allocation and accumulation–Acclimation mechanisms and capacity. For Ecol Manag
330:252–260
Ryan AC, Dodd IC, Rothwell SA, Jones R, Tardieu F, Draye X, Davies WJ (2016) Gravimetric
phenotyping of whole plant transpiration responses to atmospheric vapour pressure deficit
identifies genotypic variation in water use efficiency. Plant Sci 251:101–109
Salojärvi J, Smolander OP, Nieminen K et al (2017) Genome sequencing and population genomic
analyses provide insights into the adaptive landscape of silver birch. Nat Genet 49(6):904–912
Saxe H, Cannell MG, Johnsen Ø, Ryan MG, Vourlitis G (2001) Tree and forest functioning in
response to global warming. New Phytol 149(3):369–399
Sellin A, Lubenets K (2010) Variation of transpiration within a canopy of silver birch: effect of
canopy position and daily versus nightly water loss. Ecohydrology 3:467–477
Sellin A, Eensalu E, Niglas A (2010) Is distribution of hydraulic constraints within tree crowns
reflected in photosynthetic water-use efficiency? An example of Betula pendula. Ecol Res
25:173–183
Sellin A, Tullus A, Niglas A, Õunapuu E, Karusion A, Lõhmus K (2013) Humidity-driven changes
in growth rate, photosynthetic capacity, hydraulic properties and other functional traits in silver
birch (Betula pendula). Ecol Res 28:523–535
Sellin A, Rosenvald K, Õunapuu-Pikas E, Tullus A, Ostonen I, Lõhmus K (2015) Elevated air
humidity affects hydraulic traits and tree size but not biomass allocation in young silver birches
(Betula pendula). Front Plant Sci 6:860
334
E. Oksanen et al.
layer. J Hydrol 166:251–263
Mortley D, Bonsi C, Loretan P, Hill W, Morris C (2000) High relative humidity increases yield,
harvest index, flowering, and gynophore growth of hydroponically grown peanut plants. Hortic
Sci 35:46–48
Niglas A, Kupper P, Tullus A, Sellin A (2014) Responses of sap flow, leaf gas exchange and growth
of hybrid aspen to elevated atmospheric humidity under field conditions. AoB Plants 6:plu021
Niglas A, Alber M, Suur K, Jasińska AK, Kupper P, Sellin A (2015) Does increased air humidity
affect stomatal morphology and functioning in hybrid aspen? Botany 93:243–250
Niglas A, Papp K, Sękiewicz M, Sellin A (2017) Short-term effects of light quality on leaf gas
exchange and hydraulic properties of silver birch (Betula pendula). Tree Phys 37:1218–1228
Norby RJ, Kozlowski TT (1982) The role of stomata in sensitivity of Betula papyrifera seedlings to
SO2 at different humidities. Oecologia 53(1):34–39
Novák V, Vidovič J (2003) Transpiration and nutrient uptake dynamics in maize (Zea mays L.) Ecol
Model 166:99–107
Osonubi O, Davies W (1980) The influence of plant water stress on stomatal control of gas
exchange at different levels of atmospheric humidity. Oecologia 46:1–6
Parts K, Tedersoo L, Lõhmus K, Kupper P, Rosenvald K, Sõber A, Ostonen I (2013) Increased air
humidity and understory composition shape short root traits and the colonizing ectomycorrhizal
fungal community in silver birch stands. For Ecol Manag 310:720–728
Possen BJ, Oksanen E, Rousi M et al (2011) Adaptability of birch (Betula pendula Roth) and
aspen (Populus tremula L.) genotypes to different soil moisture conditions. For Ecol Manag
262(8):1387–1399
Rodrigues CR, Silveira JA, Viégas RA, Moura RM, Aragão RM, Silva EN (2016) Combined
effects of high relative humidity and K+ supply mitigates damage caused by salt stress
on growth, photosynthesis and ion homeostasis in J. curcas plants. Agric Water Manag
163:255–262
Rohula G, Tulva I, Tullus A, Sõber A, Kupper P (2017) Endogenous regulation of night-time water
relations in hybrid aspen grown at ambient and elevated air humidity. Reg Environ Chang
17:2169–2178
Rosenvald K, Tullus A, Ostonen I, Uri V, Kupper P, Aosaar J, Varik M, Sõber J, Niglas A, Hansen
R (2014) The effect of elevated air humidity on young silver birch and hybrid aspen biomass
allocation and accumulation–Acclimation mechanisms and capacity. For Ecol Manag
330:252–260
Ryan AC, Dodd IC, Rothwell SA, Jones R, Tardieu F, Draye X, Davies WJ (2016) Gravimetric
phenotyping of whole plant transpiration responses to atmospheric vapour pressure deficit
identifies genotypic variation in water use efficiency. Plant Sci 251:101–109
Salojärvi J, Smolander OP, Nieminen K et al (2017) Genome sequencing and population genomic
analyses provide insights into the adaptive landscape of silver birch. Nat Genet 49(6):904–912
Saxe H, Cannell MG, Johnsen Ø, Ryan MG, Vourlitis G (2001) Tree and forest functioning in
response to global warming. New Phytol 149(3):369–399
Sellin A, Lubenets K (2010) Variation of transpiration within a canopy of silver birch: effect of
canopy position and daily versus nightly water loss. Ecohydrology 3:467–477
Sellin A, Eensalu E, Niglas A (2010) Is distribution of hydraulic constraints within tree crowns
reflected in photosynthetic water-use efficiency? An example of Betula pendula. Ecol Res
25:173–183
Sellin A, Tullus A, Niglas A, Õunapuu E, Karusion A, Lõhmus K (2013) Humidity-driven changes
in growth rate, photosynthetic capacity, hydraulic properties and other functional traits in silver
birch (Betula pendula). Ecol Res 28:523–535
Sellin A, Rosenvald K, Õunapuu-Pikas E, Tullus A, Ostonen I, Lõhmus K (2015) Elevated air
humidity affects hydraulic traits and tree size but not biomass allocation in young silver birches
(Betula pendula). Front Plant Sci 6:860
334
E. Oksanen et al.