Changes in Nutritive Value of Browse Plants Following Forest Fires

DeWitt, J.B.; Derby, James V.

doi:10.2307/3797554

Cited by 27 publications

(12 citation statements)

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“…Insufficient fuel loads on the Experimental Range made burning of limited use for secondary brush control on triclopyr treatments, but was more effective on tebuthiuron treatments . Previous researchers have shown that nutritional responses of browse to periodic burning are variable and depend on fire intensity, ranging from relatively minor and short-lived increases (Wood 1988) to more substantial and persistent improvements in quality following high-intensity burns (Dewitt and Derby 1955).…”

Section: Discussionmentioning

confidence: 99%

Nutritional Quality of Browse after Brush Management on Cross Timbers Rangeland

Soper¹,

Lochmiller²,

Leslie³

et al. 1993

Journal of Range Management

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Section: Discussionmentioning

confidence: 99%

Nutritional Quality of Browse after Brush Management on Cross Timbers Rangeland

Soper¹,

Lochmiller²,

Leslie³

et al. 1993

Journal of Range Management

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“…Improving the forage quality of understorey vegetation is even one of the aims of some prescribed burnings (DeWitt and Derby 1955;Bendell 1974). More generally, increased plant production in the understorey has frequently been measured after prescribed burnings (Ahlgren 1960;McKevlin and McKee 1986;Gilliam 1988).…”

Section: Repercussions On Foliar Nutrientsmentioning

confidence: 99%

Nitrogen and phosphorus cycling following prescribed burning in natural and managed Aleppo pine forests

Gillon¹,

Houssard²,

Valette³

et al. 1999

Can. J. For. Res.

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Two prescribed burnings (downhill and uphill fires) were conducted in two stands of Aleppo pine (Pinus halepensis Mill.): a natural stand and a managed stand that was subject to thinning, pruning, and shrub removal. The concentrations of nitrogen (N) and phosphorus (P) in the pine needles and regrowth of the main shrub species, Quercus coccifera L., and the quantities of N and P in the needle fall and in the forest floor were measured during the 6 months following the fires. The concentrations of N and P in the pine needles and leaves of Q. coccifera increased compared with the unburned control after both fires in the natural stand, where there was only a slight reduction in fuel during prescribed burnings and where there was an abundant fall of scorched needles. In contrast, the chemical composition of the foliage was unchanged after the fires in the managed stand, where there was a greater reduction in fuel, and where only small quantities of scorched needles fell. This study showed that first opening prescribed burnings (natural stand) were less severe in terms of nutrient balance than maintenance prescribed burnings (managed stand) and that the forest floor reduction was a good indicator of fire severity.Résumé : Deux brûlages dirigés (feu descendant et feu montant) ont été réalisés dans deux peuplements de Pinus halepensis Mill. : le peuplement naturel et une zone aménagée, éclaircie, élaguée et débroussaillée. Les concentrations en azote (N) et phosphore (P) des aiguilles de pin et des feuilles des repousses de la principale espèce arbustive, le Quercus coccifera L., et les quantités de N et P dans les chutes d'aiguilles et la litière au sol ont été mesurées pendant 6 mois après les feux. Les concentrations en N et P des aiguilles de pin et des feuilles de Q. coccifera ont augmenté, par rapport au témoin non brûlé, après les deux feux dans le peuplement naturel où la réduction du combustible au cours des brûlages a été faible et où les chutes d'aiguilles roussies ont été importantes. Par contre, la composition chimique des feuillages n'a pas changé après les deux feux dans le peuplement aménagé où la réduction du combustible a été plus importante et où les chutes d'aiguilles roussies ont été faibles. Cette étude a montré que les brûlages dirigés d'ouverture (peuplement naturel) ont été moins sévères en termes de bilan des nutriments que les brûlages dirigés d'entretien (peuplement aménagé) et que la réduction de la litière au sol a été un bon indicateur de la sévérité des feux.[Traduit par la Rédaction] Gillon et al. 1247

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“…In addition to forage quantity, ungulates may be affected by fire-induced changes in forage quality, specifically the digestibility and crude protein within available forage. In response to fire, plants may experience a short-term increase in protein (DeWitt and Derby, 1955;Hobbs and Spowart, 1984) due to a flush of nutrients, including N, from ash (Boerner, 1982). Forage quality may also increase due to a shift in the plant community composition; fires can increase availability of grasses (Cook et al, 1994;Merrill et al, 1980) and forbs (Merrill et al, 1980).…”

Section: Introductionmentioning

confidence: 99%