Microclimate beneath pine plantation, semi-mature pine plantation and mixed broadleaved-pine forest

Porté, Annabel J.; Huard, Frédéric; Dreyfus, Philippe

doi:10.1016/j.agrformet.2004.06.001

Cited by 61 publications

(49 citation statements)

References 22 publications

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“…This temporal departure partially coincides with the lowest wind speeds observed. Weak winds decrease air mixing, promoting distinction in T and RH [10,34]. Hence, local wind patterns further differentiate micrometeorology between the three forest types and possibly contribute to explain why maximum T and minimum RH are attained earlier in the day in PP.…”

Section: Differences In Weather and Fuel Moisture Contentmentioning

confidence: 99%

“…Forest composition and structure influence both microclimatic conditions [9,10] and fuel structure and quantity [11], hence, fire behavior and effects. Stand structure determines in-stand wind speed profile [12,13], solar radiation [10], and dead fuel moisture content [14,15]. Dry, wind-exposed, low (either open or dense) Mediterranean forest types experience fast-spreading, high-intensity crown fire [11].…”

Section: Introductionmentioning

confidence: 99%

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Microclimate and Modeled Fire Behavior Differ Between Adjacent Forest Types in Northern Portugal

Pinto

Fernandes

2014

Forests

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Fire severity varies with forest composition and structure, reflecting micrometeorology and the fuel complex, but their respective influences are difficult to untangle from observation alone. We quantify the differences in fire weather between different forest types and the resulting differences in modeled fire behavior. Collection of in-stand weather data proceeded during two summer periods in three adjacent stands in northern Portugal, respectively Pinus pinaster (PP), Betula alba (BA), and Chamaecyparis lawsoniana (CL). Air temperature, relative humidity and wind speed varied respectively as CL < PP < BA, PP < CL < BA, and CL < BA < PP. Differences between PP and the other types were greatest during the warmest and driest hours of the day in a sequence of 10 days with high fire danger. Estimates of daytime moisture content of fine dead fuels and fire behavior characteristics for this period, respectively, from Behave and BehavePlus, indicate a CL < BA < PP gradient in fire potential. High stand density in CL and BA ensured lower wind speed and higher fuel moisture content than in PP, limiting the likelihood of an extreme fire environment. However, regression tree analysis revealed that the fire behavior distinction between the three forest types was primarily a function of the surface fuel complex, and more so during extreme fire weather conditions. OPEN ACCESSForests 2014, 5 2491

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Section: Differences In Weather and Fuel Moisture Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microclimate and Modeled Fire Behavior Differ Between Adjacent Forest Types in Northern Portugal

Pinto

Fernandes

2014

Forests

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“…Uno de los tipos de disturbio más comunes en Suramérica durante el último siglo ha sido el reemplazo de bosque nativo por la plantación extensiva de especies exóticas, como pino y eucalipto (Sedjo 1999, Toro & Gessel 1999, Granda 2006. Sin importar si estas plantaciones tuvieron un interés estético o maderero, las alteraciones físicas del suelo en plantaciones de pino han sido ampliamente documentadas, e incluyen una baja retención de calor (Porté et al 2004) y una máxima evapotranspiración, afectando la diná-mica hídrica a nivel regional (Oyarzún & Huber 1999, Buytaert et al 2007. Con frecuencia, el establecimiento de estas plantaciones trae consigo la fragmentación del bosque nativo, donde los parches más pequeños pueden ser seriamente influenciados por la matriz de pino.…”

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Efecto de plantaciones de pino en la artropofauna del suelo de un bosque Altoandino

León-Gamboa¹,

Ramos²,

García³

2009

RBT

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Effect of pine plantations on soil arthropods in a high Andean forest. One of the most common problems in the Colombian mountains has been the replacement of native vegetation by pine plantations. Soil arthropods are a fundamental component of forest ecosystem, since they participate in the organic matter fragmentation, previous to decomposition. This role is more valuable in high altitude environments, where low temperatures limit the dynamics of biological processes, where the effects of pine plantations on soil arthropods are still not well-known. In a remnant of high-andean forest (Neusa -Colombia) and a pine plantation of about 50 years-old, it was evaluated the composition, richness and abundance of arthropods at surface (S), organic horizon (O) and mineral horizon (A) of soil, to establish the differences associated to the soil use transformation. It was used "Pitfall" sampling to register the movement of the epigeous fauna, and extraction by funnel Berlese for determining the fauna density from O and A horizons. The Shannon and Simpson indexes estimated the diversity at different places and horizons, and the trophic structure of the community was evaluated. Overall, there were collected 38 306 individuals from forest and 17 386 individuals from pine plantation, mainly distributed in Collembola (42.4%), Acari (27%), Diptera (17.6%) and Coleoptera (4.6%). The most important differences were given in the surface, where the mobilization in forest (86 individuals/day) almost triplicates the one in pine plantation (33 individuals/ day). The differences in composition were given in Collembola, Araneae, Hemiptera, Homoptera and Hymenoptera. The dynamics of richness and abundance along the year had significant high values in the native forest than in the pine plantation. The general trophic structure was dominated by saprophagous (75%), followed by predators (14%) and phytophagous (9%), but in two layers of the pine plantation soil (S and O) this structural pattern was not given. Based on the results, it was concluded that pine plantations affect the diversity, composition, community dynamic and trophic structure of soil arthropods. Also, some estimators of soil stability give signals that these effects are reducing the ecosystem function in the region. Rev. Biol. Trop. 58 (3): 1031-1048. Epub 2010 September 01.

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“…Several authors showed that dominating tree species in forests can greatly impact soil properties (Binkley and Giardina 1998;Knops et al 2002;Zhong and Makeschin 2004) or that different dominating plant species may have significant effects on environmental conditions, e.g. understory light supply (Bazzaz 1990;Barkman 1992;Jennings et al 1999;Porté et al 2004;Barbier et al 2008), rate of nitrogen supply (Berendse 1990) or C/N ratio and N-mineralisation rate (Miles andYoung 1980, Hagen-Thorn et al 2004). Moreover, single plant species can act as ecosystem engineers who have significant effects on species diversity and ecosystem function (Wedin and Tilman 1990;Mitchell et al 2007;Schmidt 2007).…”

Section: Introductionmentioning

confidence: 99%

Impact of tree species on nutrient and light availability: evidence from a permanent plot study of old-field succession

Dölle

Schmidt

2008

Plant Ecol

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This paper compares vegetation composition, light availability, carbon and nutrient pools and Ellenberg indicator values among four old-field successional permanent plots that have received an initial treatment (ploughing, herbicide or sterilisation) prior to being left undisturbed in 1969, a second set of six plots received additional treatments (continued ploughing or mulching until 1982). On all plots species rich pioneer forests developed. Vegetation still varies among plots with different initial treatments: Sterilised plots can be distinguished from the others by dominance of Betula pendula, ploughed plots by Fraxinus excelsior, whereas herbicide-treated plots are intermediate with proportions of both species. By affecting light availability at the ground, tree species in turn influences ground vegetation and soil properties. Light availability turned out to be the dominant factor determining the composition of the vegetation in old-field succession.

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Microclimate beneath pine plantation, semi-mature pine plantation and mixed broadleaved-pine forest

Cited by 61 publications

References 22 publications

Microclimate and Modeled Fire Behavior Differ Between Adjacent Forest Types in Northern Portugal

Microclimate and Modeled Fire Behavior Differ Between Adjacent Forest Types in Northern Portugal

Efecto de plantaciones de pino en la artropofauna del suelo de un bosque Altoandino

Impact of tree species on nutrient and light availability: evidence from a permanent plot study of old-field succession

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