Light and soil humidity influencing oak seedling growth and physiology in mixed hardwood gaps

Raddi, Sabrina; Basile, Leandro Francisco; Anichini, Monica; Pozzi, D; Logli, F

doi:10.3832/efor0589-006

Cited by 3 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…La luce non può essere considerato il solo fattore chiave per la rinnovazione della farnia; è stato dimostrato che, per la necessità di massimizzare l'accrescimento in altezza, il novellame della quercia è molto condizionato anche dallo stress idrico (Ponton et al 2002), sebbene, piuttosto che l'azione separata dei singoli fattori ecologici, sembra sia l'interazione della luce con il contenuto idrico del suolo a influenzare sia la sopravvivenza che l'accrescimento giovanile dei semenzali di farnia (Löf et al 1998, Raddi et al 2009). …”

Section: Shelterunclassified

The conservation of pedunculate oak (Quercus robur) stands in the territory of Parco Lombardo Valle del Ticino (province of Milano and Pavia): main results and management proposals after three years of testing

Bianchi¹,

Caronni²,

Giovannini³

et al. 2013

Forest@

View full text Add to dashboard Cite

PremessaNel territorio del Parco del Ticino, il "deperimento" delle piante di farnia ha iniziato a manifestarsi alla fine degli anni '90. Si tratta di uno stato di sofferenza che, a partire dalla metà degli anni '80, era stato segnalato per altri boschi quercini del nostro paese (Ragazzi et al. 2000). I sintomi del deperimento si manifestano con trasparenza della chioma, ingiallimenti fogliari, morte delle estremità delle branche (a volte dell'intera chioma), emissione di rami epicormici lungo branche e tronco (AA. VV. 2006) mentre per quanto riguarda le cause del fenomeno, si concorda sul fatto che esse sono attribuibili a un'interazione sinergica di fattori biotici e abiotici (Tiberi 2000). Per meglio monitorare il fenomeno si sta cercando di mettere a punto una metodologia basata su tecniche di telerilevamento (Rossini et al. 2007).In presenza di questi preoccupanti sintomi, la Regione Lombardia e il Parco del Ticino hanno promosso e finanziato, nell'ambito del programma regionale in campo agricolo [2001][2002][2003], il progetto di ricerca DEPFAR ("Indagini diagnostiche sul deperimento della farnia nei boschi della valle del Ticino"), a cui è seguita, a partire dal 2008, la prosecuzione dal Four experimental areas were located, both in "meso-hygrophilous" and "mesophilous" sites, respectively corresponding to: (a): less intense seed felling; (b): more intense seed felling (both of them aimed to promote the natural regeneration); (c): opening of gap (800 m 2 ) followed by artificial regeneration (both protected and non-protected by shelters); (d): control. Three years after the set up of the experiment, the main results may be summarized as follows: (i): both the seed fellings (the more and the less intense felling) produced a process of natural regeneration, at present insufficient to ensure the continuity of the forest canopy cover; (ii): the branchwood released after utilization produced a positive effect on settlement and growth of peduncolate oak seedlings, attributable to the protection both from the roe deer browsing and wild boar acorn consumption; (iii): ventilated shelters (Tubex Ventex®) produced a positive effect on planting stock, both in terms of survival and growth; (iv): monitoring over time, especially as regards the analysis of the effects of different types of treatment on the processes of regeneration, can provide indications management extensible in similar populations in the territory of the Parco Lombardo Valle del Ticino.

show abstract

Section: Shelterunclassified

The conservation of pedunculate oak (Quercus robur) stands in the territory of Parco Lombardo Valle del Ticino (province of Milano and Pavia): main results and management proposals after three years of testing

Bianchi¹,

Caronni²,

Giovannini³

et al. 2013

Forest@

View full text Add to dashboard Cite

show abstract

“…Prawdopodobnie nadal oewiat³o bezpooerednie jest czynnikiem decyduj¹cym o przestrzennym zró¿nicowaniu wysokooeae drzewek, ale na s³abszych siedliskach oddzia³uje ono na 7-letnie dêby negatywnie. Silna insolacja przy s³abszym zaopatrzeniu w wodê modyfikuje fizjologiê dêbów (Raddi et al 2009;Thomas, Gausling 2000), jak te¿ ich morfologiê (Gross et al 1996). M³ode dêby w takich warunkach ograni-czaj¹ przyrost na wysokooeae (Dickson, Tomilison 1996) i silniej rozbudowuj¹ system korzeniowy (van Hees 1997).…”

unclassified

The height of seven-year-old oaks growing in gaps in different forest habitats

Bolibok¹,

Andrzejczyk²,

Drozdowski³

et al. 2011

Forest Research Papers

View full text Add to dashboard Cite

Wysokooeae siedmioletnich odnowieñ dêbowych na gniazdach w ró¿nych warunkach siedliskowychThe height of seven-year-old oaks growing in gaps in different forest habitats Abstract. Spatial variability in the height of planted oak saplings was investigated at three different sites: deciduous, mixed deciduous and mixed coniferous forest types in artificial gaps of size about 15 and 23 ares (1 are = 100 m -2 ). (four gaps for 'gap size -forest site' combination). The height of planted trees was measured on five circular plots (radius 3 m) placed in the gap centre and 9 meters from southern, northern, eastern and western gap borders. At the deciduous forest site, the tallest 7-year-old oaks were growing in the northern part of the gaps and oak height diminished towards the south. The opposite growth pattern was observed in the remaining forest sites. The water holding capacity of rich soils is usually greater than that of poor soils, and we attribute the observed trends to good water supplies for young oaks allowing them to grow better on the northern side of gaps where they receive more light; whereas on poor soils moisture is more important. There was no biologically significant difference between the heights of oaks in gaps of 15 ares and gaps of 23 ares at the mixed deciduous forest site. This suggests that it may be possible for foresters to cut larger gaps while still promoting regeneration without a loss in productivity.

show abstract