Influence of environmental variables on the shrub and tree species distribution in two Semideciduous Forest sites in Viçosa, Minas Gerais, Brazil

The objective of this study was to test the hypothesis that the distribution of tree species in a fragment of submontane seasonal semideciduous forest, a buffer zone in the Parque Estadual do Rio Doce, Minas Gerais, is influenced by geomorphological and weather and soil variables, therefore it can represent a source of information for the restoration of degraded areas where environmental conditions are similar to those of the study area. A detailed soil survey was conducted in the area by sampling three soil profiles per slope segment, totaling 12 profiles. To sample the topsoil, four composite samples were collected from the 10-20 cm layers in each topographic range totaling 16 composite samples. In the low ramp and the lower and upper concave slopes, the texture ranged from clay to sandy-clay. The soil and topographic gradient was characterized by changes in the soil physical-chemical properties. The soil in the 10-20 cm sampled layer was sandier, slightly more fertile and less acid in the low ramp than the clayer soil, nutrient-poor and highly acid soil at the top. The soil conditions in the lower and upper slope of the sampled layers, in turn, were intermediate. The P levels were limiting in all soils. The species distribution along the topographic gradient was associated with variations in chemical fertility, acidity and soil texture. The distribution of Pera leandri, Astronium fraxinifolium, Pouteria torta, Machaerium brasiliense and Myrcia rufipes was correlated with high aluminum levels and to low soil fertility and these species may be indicated for restoration of degraded areas on hillsides and hilltops in regions where environmental conditions are similar. The distribution of Pouteria venosa, Apuleia leiocarpa and Acacia polyphylla was correlated with the less acid and more fertile soil in the environment of the low ramps, indicating the potential for the restoration of similar areas.

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Tree species distribution along soil catenas in a riverside semideciduous forest in southeastern Brazil

Flora ◽

10.1016/s0367-2530(17)30754-5 ◽

1997 ◽

Vol 192 (1) ◽

pp. 47-64 ◽

Cited By ~ 20

Author(s):

A.T. Oliveira-Filho ◽

N. Curi ◽

E.A. Vilela ◽

D.A. Carvalho

Keyword(s):

Species Distribution ◽

Tree Species ◽

Southeastern Brazil ◽

Semideciduous Forest

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Natural regeneration of tree species in the understory of Corymbia citriodora in Florestal city, Minas Gerais, Brazil

Acta Brasiliensis ◽

10.22571/2526-4338244 ◽

2019 ◽

Vol 3 (3) ◽

pp. 106

Author(s):

Laís Alvares Fonseca ◽

Francisco de Assis Braga ◽

Geanderson Santiago Fernandes

Keyword(s):

Tree Species ◽

Natural Regeneration ◽

Basal Area ◽

Minas Gerais ◽

Forest Understory ◽

Ecological Groups ◽

Semideciduous Forest ◽

Important Species ◽

Dispersal Syndromes ◽

Corymbia Citriodora

The natural regeneration of tree species in forested areas has been studied by several researches. This study aimed to evaluate the natural regeneration of tree species in Corymbia citriodora (Hook.) K. D. Hill & L. A. Johnson planted forest understory in Florestal, Minas Gerais, Brazil. Individuals with diameter at breast height (DBH) ≥ 5 cm were evaluated in seven 25 x 4 m plots randomly distributed. A phytosociological survey was carried out and the ecological groups and the dispersal syndromes of the regenerants were determined. We found 28 species belonging to 12 families, among which Fabacea and Annonaceae stood out. Density was 1,557 regenerants ha-1, and basal area was 23 m2 ha-1. The most important species were Psidium sp; Schefflera macrocarpa (Cham. & Schltdl.) Frodin; Pera glabrata (Schott) Poepp. ex Baill.; Astronium fraxinifolium Schott & Spreng.; Matayba guianensis Aubl.; and Plathymenia reticulata Benth. We found 35% pioneer, 40% early secondary, 18% late secondary, and 7% climax species, of which 57% are zoochoric, 40% anemochoric, and 3% autochoric. It is concluded that the natural regeneration in the understory studied comprises typical species of the Seasonal Semideciduous Forest of the Atlantic Forest biome, presenting significant density and individuals from all ecological groups.The natural regeneration of tree species in forested areas has been studied by several researches. This study aimed to evaluate the natural regeneration of tree species in Corymbia citriodora (Hook.) K. D. Hill & L. A. Johnson planted forest understory in Florestal, Minas Gerais, Brazil. Individuals with diameter at breast height (DBH) ≥ 5 cm were evaluated in seven 25 x 4 m plots randomly distributed. A phytosociological survey was carried out and the ecological groups and the dispersal syndromes of the regenerants were determined. We found 28 species belonging to 12 families, among which Fabacea and Annonaceae stood out. Density was 1,557 regenerants ha-1, and basal area was 23 m2 ha-1. The most important species were Psidium sp; Schefflera macrocarpa (Cham. & Schltdl.) Frodin; Pera glabrata (Schott) Poepp. ex Baill.; Astronium fraxinifolium Schott & Spreng.; Matayba guianensis Aubl.; and Plathymenia reticulata Benth. We found 35% pioneer, 40% early secondary, 18% late secondary, and 7% climax species, of which 57% are zoochoric, 40% anemochoric, and 3% autochoric. It is concluded that the natural regeneration in the understory studied comprises typical species of the Seasonal Semideciduous Forest of the Atlantic Forest biome, presenting significant density and individuals from all ecological groups.

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The composition and diversity of natural regeneration of tree species in gaps under different intensities of forest disturbance

Journal of Forestry Research ◽

10.1007/s11676-020-01269-6 ◽

2021 ◽

Author(s):

Maame Esi Hammond ◽

Radek Pokorný ◽

Daniel Okae-Anti ◽

Augustine Gyedu ◽

Irene Otwuwa Obeng

Keyword(s):

Tree Species ◽

Natural Regeneration ◽

Forest Disturbance ◽

Forest Site ◽

Gap Formation ◽

Tree Species Composition ◽

Forest Sites ◽

Significant Difference ◽

Shade Tolerant Species ◽

Disturbed Forest

AbstractThe positive ecological interaction between gap formation and natural regeneration has been examined but little research has been carried out on the effects of gaps on natural regeneration in forests under different intensities of disturbance. This study evaluates the composition, diversity, regeneration density and abundance of natural regeneration of tree species in gaps in undisturbed, intermittently disturbed, and disturbed forest sites. Bia Tano Forest Reserve in Ghana was the study area and three gaps each were selected in the three forest site categories. Ten circular subsampling areas of 1 m2 were delineated at 2 m spacing along north, south, east, and west transects within individual gaps. Data on natural regeneration < 350 cm height were gathered. The results show that the intensity of disturbance was disproportional to gap size. Species diversity differed significantly between undisturbed and disturbed sites and, also between intermittently disturbed and disturbed sites for Simpson’s (1-D), Equitability (J), and Berger–Parker (B–P) indices. However, there was no significant difference among forest sites for Shannon diversity (H) and Margalef richness (MI) indices. Tree species composition on the sites differed. Regeneration density on the disturbed site was significantly higher than on the two other sites. Greater abundance and density of shade-dependent species on all sites identified them as opportunistic replacements of gap-dependent pioneers. Pioneer species giving way to shade tolerant species is a natural process, thus make them worst variant in gap regeneration.

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Wood-inhabiting fungal responses to forest naturalness vary among morpho-groups

Scientific Reports ◽

10.1038/s41598-021-93900-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Purhonen Jenna ◽

Abrego Nerea ◽

Komonen Atte ◽

Huhtinen Seppo ◽

Kotiranta Heikki ◽

...

Keyword(s):

Tree Species ◽

Boreal Forests ◽

Negative Impact ◽

Important Variable ◽

Host Tree ◽

Conservation Areas ◽

Fungal Community Composition ◽

Forest Sites ◽

Protected Forests ◽

Host Tree Species

AbstractThe general negative impact of forestry on wood-inhabiting fungal diversity is well recognized, yet the effect of forest naturalness is poorly disentangled among different fungal groups inhabiting dead wood of different tree species. We studied the relationship between forest naturalness, log characteristics and diversity of different fungal morpho-groups inhabiting large decaying logs of similar quality in spruce dominated boreal forests. We sampled all non-lichenized fruitbodies from birch, spruce, pine and aspen in 12 semi-natural forest sites of varying level of naturalness. The overall fungal community composition was mostly determined by host tree species. However, when assessing the relevance of the environmental variables separately for each tree species, the most important variable varied, naturalness being the most important explanatory variable for fungi inhabiting pine and aspen. More strikingly, the overall species richness increased as the forest naturalness increased, both at the site and log levels. At the site scale, the pattern was mostly driven by the discoid and pyrenoid morpho-groups inhabiting pine, whereas at the log scale, it was driven by pileate and resupinate morpho-groups inhabiting spruce. Although our study demonstrates that formerly managed protected forests serve as effective conservation areas for most wood-inhabiting fungal groups, it also shows that conservation planning and management should account for group- or host tree -specific responses.

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Do species distribution models explain spatial structure within tree species ranges?

Global Ecology and Biogeography ◽

10.1111/j.1466-8238.2009.00478.x ◽

2009 ◽

Vol 18 (6) ◽

pp. 662-673 ◽

Cited By ~ 21

Author(s):

Daniel Montoya ◽

Drew W. Purves ◽

Itziar R. Urbieta ◽

Miguel A. Zavala

Keyword(s):

Spatial Structure ◽

Species Distribution ◽

Tree Species ◽

Species Distribution Models ◽

Distribution Models ◽

Species Ranges

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Floristic Relationships of Seasonally Dry Forests of Eastern South America Based on Tree Species Distribution Patterns

Neotropical Savannas and Seasonally Dry Forests - Systematics Association Special Volumes ◽

10.1201/9781420004496.ch7 ◽

2006 ◽

pp. 159-192 ◽

Cited By ~ 1

Author(s):

Maria Jesus Nogueira Rodal ◽

João AndréJarenkow ◽

Ary Oliveira-Filho

Keyword(s):

South America ◽

Species Distribution ◽

Tree Species ◽

Distribution Patterns ◽

Dry Forests ◽

Seasonally Dry

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Stand Structure, Productivity and Carbon Sequestration Potential of Oak Dominated Forests in Kumaun Himalaya

Current World Environment ◽

10.12944/cwe.11.2.15 ◽

2016 ◽

Vol 11 (2) ◽

pp. 466-476

Author(s):

Bijendra Lal ◽

L.S. Lodhiyal

Keyword(s):

Carbon Sequestration ◽

Primary Productivity ◽

Tree Species ◽

Stand Structure ◽

Basal Area ◽

Forest Site ◽

Forest Sites ◽

Sequestration Potential ◽

Oak Tree ◽

Quercus Leucotrichophora

Present study deals with stand structure, biomass, productivity and carbon sequestration in oak dominated forests mixed with other broad leaved tree species. The sites of studied forests were located in Nainital region between 29058’ N lat. and 79028’ E long at 1500-2150 m elevation. Tree density of forests ranged from 980-1100 ind.ha-1. Of this, oak trees shared 69-97%. The basal area of trees was 31.81 to 63.93 m2 ha-1. R. arboreum and Q. floribunda shared maximum basal area 16.45 and 16.32 m2 ha-1, respectively in forest site-1 and 2 while Quercus leucotrichophora shared maximum (35.69 m2 ha-1) in site-3. The biomass and primary productivity of tree species ranged from 481-569 t ha-1 and 16.9-20.9 t ha-1yr-1, respectively. Of this, biomass and primary productivity of oak tree species accounted for 81 to 95 and 78 to 98%, respectively. Carbon stock and carbon sequestration ranged from 228 to 270 t ha-1 and 8.0 to 9.9 t ha-1yr-1, respectively. The share of oak tree species ranged from 81 to 94.7 and 79 to 97%, respectively. The diversity of tree species ranged from 0.03 to 0.16 in forest sites-1, 2 and 3. The diversity of oak species was 0.08-0.16 in all the forest sites. Thus it is concluded that among the oak tree species, Quercus floribunda and Quercus leucotrichophora were highly dominated in the studied forests. The climax form of oak dominated trees in the studied forest sites depicted slightly lower richness and diversity of tree species compared to the forests in the region and elsewhere. As far as dry matter and carbon of forests is concerned, these estimates are close to the earlier reports of forests in the region. Therefore, studied forests have the potential to increase the diversity, productivity and carbon sequestration of forest tree species by providing the adequate scientific conservation and management inputs.

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