Lifespan and mortality of old oaks - combining empirical and modelling approaches to support their management in Southern Sweden

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Lifespan and mortality of old oaks - combining empirical and modelling approaches to support their management in Southern Sweden. / Drobyshev, Igor; Niklasson, Mats; Linderson, Hans; Sonesson, Kerstin; Karlsson, Matts; Nilsson, Sven; Lanner, Jan.

I: Annals of Forest Science, Vol. 65, Nr. 4, 2008, s. 401.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

Drobyshev, Igor ; Niklasson, Mats ; Linderson, Hans ; Sonesson, Kerstin ; Karlsson, Matts ; Nilsson, Sven ; Lanner, Jan. / Lifespan and mortality of old oaks - combining empirical and modelling approaches to support their management in Southern Sweden. I: Annals of Forest Science. 2008 ; Vol. 65, Nr. 4. s. 401.

RIS

TY - JOUR

T1 - Lifespan and mortality of old oaks - combining empirical and modelling approaches to support their management in Southern Sweden

AU - Drobyshev, Igor

AU - Niklasson, Mats

AU - Linderson, Hans

AU - Sonesson, Kerstin

AU - Karlsson, Matts

AU - Nilsson, Sven

AU - Lanner, Jan

PY - 2008

Y1 - 2008

N2 - Old oaks (Quercus robur L.) play an important role in the southern Scandinavian landscape by providing habitat for a wide range of species, a large proportion of them being currently on the National Redlists. To provide support for the management of these trees, we review data on oak mortality and formulate a mortality-driven stochastic model analysing interactions between mortality rate, oak recruitment rate into 100-150 age class, and amount of oaks older than 200 years. Empirical annual mortality rates varied between 0 and 13% with average 1.68%. Trees older 200 years had an average mortality rate of 1.1%. Oaks in the high density forests showed higher mortality (3.2%) as compared to the trees growing in the low density forests (1.2%). A 400-year long modelling exercises indicated that under current mortality rates (regular mortality being centred around 1% annually; and irregular mortality 7% with average return time of 13 years) the long-term maintenance of 20 trees older than 200 years per ha would require an input rate of 1 to 5 trees x year(-1) x ha(-1) into the 100-150 years old class. The modelling highlighted the importance of initial oak abundance affecting amount of old trees at the end of shorter (100 years) simulation period.

AB - Old oaks (Quercus robur L.) play an important role in the southern Scandinavian landscape by providing habitat for a wide range of species, a large proportion of them being currently on the National Redlists. To provide support for the management of these trees, we review data on oak mortality and formulate a mortality-driven stochastic model analysing interactions between mortality rate, oak recruitment rate into 100-150 age class, and amount of oaks older than 200 years. Empirical annual mortality rates varied between 0 and 13% with average 1.68%. Trees older 200 years had an average mortality rate of 1.1%. Oaks in the high density forests showed higher mortality (3.2%) as compared to the trees growing in the low density forests (1.2%). A 400-year long modelling exercises indicated that under current mortality rates (regular mortality being centred around 1% annually; and irregular mortality 7% with average return time of 13 years) the long-term maintenance of 20 trees older than 200 years per ha would require an input rate of 1 to 5 trees x year(-1) x ha(-1) into the 100-150 years old class. The modelling highlighted the importance of initial oak abundance affecting amount of old trees at the end of shorter (100 years) simulation period.

KW - disturbance

KW - dynamics

KW - population

KW - dendrochronology

KW - European hardwoods

KW - conservation

U2 - 10.1051/forest:2008012

DO - 10.1051/forest:2008012

M3 - Article

VL - 65

SP - 401

JO - Annals of Forest Science

JF - Annals of Forest Science

SN - 1286-4560

IS - 4

ER -