20.500.12556/DiRROS-12091
Timeline of autumn phenology in temperate deciduous trees
Cessation of xylem formation or wood growth (CWG) and onset of foliar senescence (OFS) are key autumn phenological events in temperate deciduous trees. Their timing is fundamental for development and survival of trees, ecosystem nutrient cycling, the seasonal exchange of matter and energy between the biosphere and atmosphere and affect the impact and feedback of forests to global change. A large-scale experimental effort and improved observational methods have allowed us to compare the timing of CWG and OFS for different deciduous tree species in Western Europe, in particularly silver birch, a pioneer species, and European beech, a late-succession species, at stands of different latitudes, of different levels of site fertility, and for two years with contrasting meteorological and drought conditions i.e., the low-moderately dry 2017 and the extremely dry 2018. Specifically, we tested whether foliar senescence started before, after or concurrently with CWG. OFS and CWG occurred generally between late September and early November, with larger differences across species and sites for OFS. Foliar senescence started concurrently with CWG in most cases, except for the drier 2018 and, for beech, at the coldest site, where OFS occurred significantly later than CWG. Behavior of beech in Spain, the southern edge of its European distribution, was unclear, with no CWG, but very low wood growth at the time of OFS. Our study suggests that OFS is generally triggered by the same drivers of CWG or when wood growth decreases in late summer, indicating an overarching mechanism of sink limitation as a possible regulator of the timing of foliar senescence.
autumn phenology
xylem formation
foliar senescence
cambium
chlorophyll
radial growth
wood
decidiuous trees
common aspen
common beech
pedunculate oak
silver birch
jesenska fenologija
nastajanje lesa
listna senescenca
kambij
klorofil
debelinska rast
les
listavci
trepetlika
navadna bukev
dob
navadna breza
true
false
true
Angleški jezik
Ni določen
Neznano
2020-06-10 12:26:30
2020-06-10 12:26:31
2022-08-18 03:35:07
0000-00-00 00:00:00
2020
0
0
str. 1001-1013
iss. 8
Vol. 40
2020
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
630*18:630*8
0829-318X
10.1093/treephys/tpaa058
13951747
27866624
RAZ_Dox_Inge_i2020.pdf
RAZ_Dox_Inge_i2020.pdf
1
B51FECC019EB6A01DD247FF7B8D519C2
665675b08de18c78fb78088ecfe8715f12523063e72b1c788631f315b6bc5279
f88a9ce1-17b6-11ed-b6b8-001a4af901a5
https://dirros.openscience.si/Dokument.php?lang=slv&id=20163
https://academic.oup.com/treephys/article/40/8/1001/5825605
1
https://dirros.openscience.si/Dokument.php?lang=slv&id=14453
Gozdarski inštitut Slovenije
0
0
0