Tree species control and spatial structure of forest floor properties in a mixed-species stand

Pelletier, Bernard; Fyles, James W.; Dutilleul, Pierre

doi:10.1080/11956860.1999.11952195

Cited by 44 publications

(20 citation statements)

References 67 publications

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“…The amount of unexplained variability from the variance partitioning analyses was within the range of those found in other studies using this technique (e.g., Borcard et al 1992;Pelletier et al 1999;Asselin et al 2001). Moisture content had lower unexplained variability than temperature, likely due to the strong influence of bulk density.…”

Section: Wavelet Analysis and Variance Partitioningsupporting

confidence: 59%

“…The variance partitioning methods of Borcard et al (1992) may be employed to examine the influence of edges on forest floor temperature and moisture relative to other environmental and spatial variables. These methods have been used to describe the influences on the spatial variability of forest soils (Pelletier et al 1999), and to examine the influence of forest-clearcut edges on seedling regeneration (Asselin et al 2001).…”

mentioning

confidence: 99%

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Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

Redding¹,

Hope²,

Fortin³

et al. 2003

Can. J. Soil. Sci.

105

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To investigate if timber harvesting influences spatial patterns of soil microclimate, forest floor soil temperature and moisture were examined across forest-clearcut edges. Transects were sampled during the 2000 growing season across a 1-ha clearcut at a subalpine forest site in the southern interior of British Columbia, Canada. Forest floor temperature measurements were made twice, once under sunny and once under overcast conditions. Moisture status, measured under wet and dry conditions, was expressed as gravimetric and volumetric moisture content and matric potential. Wavelet analysis was used to detect and compare the location of edges in soil properties, and variance partitioning was used to examine the environmental and spatial sources of variability in temperature and moisture. Based on the wavelet analyses, the transition zone, in both temperature and moisture between forest and clearcut occurred at 7-15 m into the clearcut from the south edge and at 8-18 m into the forest from the north edge. Spatial patterns were consistent between clear and overcast conditions and wet and dry conditions. Distance from the edge was a minor source of spatial variability in temperature and moisture relative to the strong contrast between forest and clearcut conditions. The edge influences may have implications for nutrient cycling, plant available water and forest regeneration. Can. J. Soil Sci. 83: 121-130. Les auteurs ont étudié l'incidence de la zone de transition entre les secteurs coupés à blanc et la forêt sur la température et la teneur en eau du sol forestier afin d'établir si la récolte du bois modifie le profil spatial du microclimat tellurique. Durant la période végétative de 2000, ils ont donc prélevé des échantillons le long de transects dans une zone de coupe à blanc d'un hectare, en bordure d'une forêt subalpine de l'intérieur sud de la Colombie-Britannique, au Canada. La température du sol a été relevée quand il faisait soleil et lorsque le ciel était nuageux, alors que la teneur en eau a été mesurée par temps sec et humide et exprimée en unités gravimétriques et volumétriques ainsi qu'en fonction de la baisse du potentiel hydrique du sol (potentiel matrique). L'analyse des ondelettes a permis de déceler et de comparer les endroits où les propriétés du sol changent. Par ailleurs, les auteurs ont recouru à la séparation des variances pour établir l'origine spatiale ou environnementale des fluctuations de température et de teneur en eau. Selon l'analyse des ondelettes, la zone de transition entre la forêt et les secteurs coupés à blanc pour la température et l'eau s'étend de 7 à 15 m dans le secteur déboisé, au sud de la lisière de la forêt, jusqu'à 8 à 18 m à l'intérieur de la forêt, au nord de sa bordure. Les profils spatiaux sont cohérents, que le ciel soit dégagé ou couvert et le sol, sec ou humide. La distance de part et d'autre du bord de la forêt n'entraîne qu'une faible variation spatiale de la température et de la teneur en eau, comparativement au fort contraste qui existe entre les conditions rele...

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Section: Wavelet Analysis and Variance Partitioningsupporting

confidence: 59%

mentioning

confidence: 99%

Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

Redding¹,

Hope²,

Fortin³

et al. 2003

Can. J. Soil. Sci.

105

View full text Add to dashboard Cite

show abstract

“…Individual species affect the distribution and cycling of nutrients in biomass, the forest floor, and the mineral soil (Boettcher and Kalisz 1990;Pelletier et al 1999;Rauland-Rasmussen and Vejre 1995;Finzi et al 1998a, b;Neirynck et al 2000). This single-tree effect on soils has been referred to as 'single-tree influence circles' (Zinke 1962;Boettcher and Kalisz 1990).…”

Section: Introductionmentioning

confidence: 97%

Base-cation Cycling by Individual Tree Species in Old-growth Forests of Upper Michigan, USA

2005

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The influence of individual tree species on base-cation (Ca, Mg, K, Na) distribution and cycling was examined in sugar maple (Acer saccharum Marsh.), basswood (Tilia americana L.), and hemlock (Tsuga canadensis L.) in old-growth northern hardwood -hemlock forests on a sandy, mixed, frigid, Typic Haplorthod over two growing seasons in northwestern Michigan. Base cations in biomass, forest floor, and mineral soil (0-15 cm and 15-40 cm) pools were estimated for five replicated trees of each species; measured fluxes included bulk precipitation, throughfall, stemflow, litterfall, forest-floor leachate, mineralization + weathering, shallow-soil leachate, and deep-soil leachate. The three species differed in where base cations had accumulated within the single-tree ecosystems. Within these three single-tree ecosystems, the greatest quantity of base cations in woody biomass was found in sugar maple, whereas hemlock and basswood displayed the greatest amount in the upper 40 cm of mineral soil. Base-cation pools were ranked: sugar maple > basswood, hemlock in woody biomass; sugar maple, basswood > hemlock in foliage; hemlock > sugar maple, basswood in the forest floor, and basswood > sugar maple, hemlock in the mineral soil. Base-cation fluxes in throughfall, stemflow, the forest-floor leachate, and the deep-soil leachate (2000 only) were ranked: basswood > sugar maple > hemlock. Our measurements suggest that species-related differences in nutrient cycling are sufficient to produce significant differences in base-cation contents of the soil over short time intervals (<65 years). Moreover, these species-mediated differences may be important controls over the spatial pattern and edaphic processes of northern hardwood-hemlock ecosystems in the upper Great Lakes region.

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“…Resource quantity and heterogeneity both structure understory plant patterns, with the latter demonstrated to be especially relevant for disturbed stands [20]. Canopy composition alters resource availability in the understory [21], suggesting that the effect of the canopy differs between evergreen and deciduous trees [16,22,23]. Evergreen canopies may transmit less light [24,25], although this is species-dependent and dictated by factors such as shade-tolerance [26][27][28] and successional status [24,25,29], which consequently affect leaf area and crown architecture [27,30].…”

Section: Introductionmentioning

confidence: 99%

Spatial Heterogeneity of the Forest Canopy Scales with the Heterogeneity of an Understory Shrub Based on Fractal Analysis

Denny

Nielsen

2017

Forests

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Spatial heterogeneity of vegetation is an important landscape characteristic, but is difficult to assess due to scale-dependence. Here we examine how spatial patterns in the forest canopy affect those of understory plants, using the shrub Canada buffaloberry (Shepherdia canadensis (L.) Nutt.) as a focal species. Evergreen and deciduous forest canopy and buffaloberry shrub presence were measured with line-intercept sampling along ten 2-km transects in the Rocky Mountain foothills of west-central Alberta, Canada. Relationships between overstory canopy and understory buffaloberry presence were assessed for scales ranging from 2 m to 502 m. Fractal dimensions of both canopy and buffaloberry were estimated and then related using box-counting methods to evaluate spatial heterogeneity based on patch distribution and abundance. Effects of canopy presence on buffaloberry were scale-dependent, with shrub presence negatively related to evergreen canopy cover and positively related to deciduous cover. The effect of evergreen canopy was significant at a local scale between 2 m and 42 m, while that of deciduous canopy was significant at a meso-scale between 150 m and 358 m. Fractal analysis indicated that buffaloberry heterogeneity positively scaled with evergreen canopy heterogeneity, but was unrelated to that of deciduous canopy. This study demonstrates that evergreen canopy cover is a determinant of buffaloberry heterogeneity, highlighting the importance of spatial scale and canopy composition in understanding canopy-understory relationships.

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Tree species control and spatial structure of forest floor properties in a mixed-species stand

Cited by 44 publications

References 67 publications

Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

Spacial patterns of soil temperature and moisture across subalpine forest-clearcut edges in the southern interior of British Columbia

Base-cation Cycling by Individual Tree Species in Old-growth Forests of Upper Michigan, USA

Spatial Heterogeneity of the Forest Canopy Scales with the Heterogeneity of an Understory Shrub Based on Fractal Analysis

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