Growth ring response in Paratecoma peroba (Record) Kuhlm. of seasonal semideciduous forest in Southeast Brazil

Many tropical tree species produce growth rings in response to seasonal environmental factors that influence the activity of the vascular cambium. We applied the following methods to analyze the annual nature of treering formation of 24 tree species from a seasonal semi-deciduous forest of southeast Brazil: describing wood anatomy and phenology, counting tree rings after cambium markings, and using permanent dendrometer bands. After 7 years of systematic observations and measurements, we found the following: the trees lost their leaves during the dry season and grew new leaves at the end of the same season; trunk increment dynamics corresponded to seasonal changes in precipitation, with higher increment (active period) during the rainy season (October–April) and lower increment (dormant period) during the dry season (May–September); the number of tree rings formed after injuries to the cambium coincided with the number of years since the extraction of the wood samples. As a result of these observations, it was concluded that most study trees formed one growth ring per year. This suggests that tree species from the seasonal semi-deciduous forests of Brazil have an annual cycle of wood formation. Therefore, these trees have potential for use in future studies of tree age and radial growth rates, as well as to infer ecological and regional climatic conditions. These future studies can provide important information for the management and conservation of these endangered forests.

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SOIL SEED BANK IN SEASONAL SEMIDECIDUOUS FOREST AND ABANDONED PASTURE

Revista Árvore ◽

10.1590/0100-67622016000600004 ◽

2016 ◽

Vol 40 (6) ◽

pp. 991-1001 ◽

Cited By ~ 1

Author(s):

Sustanis Horn Kunz ◽

Sebastião Venâncio Martins

Keyword(s):

Seed Bank ◽

Soil Seed Bank ◽

Life Forms ◽

Successional Stage ◽

Semideciduous Forest ◽

Regeneration Stage ◽

Significant Difference ◽

Successional Stages ◽

Pasture Area ◽

Seasonal Semideciduous Forest

ABSTRACT The objective of this study was to characterize the seed bank in the soil of different successional stages of Seasonal Semideciduous Forest and abandoned pasture in order to understand the natural regeneration potential of these areas. At each successional stage, 30 samples of soil were collected in the rainy and dry seasons to evaluate the qualitative heterogeneity of the forest, at the regeneration stage (FEA) forest, intermediate regeneration stage forest (ISF) and pasture (PAS). The species were classified according to the life form, successional group and dispersion syndrome. The number of individuals germinated was significantly higher (p < 0.001) in the ISF and in the rainy season (15,949 individuals). Richness was higher in the pasture area (79 species), with a significant difference only between the environments. Most species are herbaceous (49.5%), pioneers (76.5%) and zoocory was the main dispersion syndrome (49% of species). The results show that seed bank in the fragment of the regeneration advanced stage forest presents the highest resilience potential, since it is formed by different life forms and, mainly, by early and late secondary species.

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Evaluation of physical quality indices of a soil under a seasonal semideciduous forest

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832014000200009 ◽

2014 ◽

Vol 38 (2) ◽

pp. 444-453 ◽

Cited By ~ 1

Author(s):

Thalita Campos Oliveira ◽

Laura Fernanda Simões da Silva ◽

Miguel Cooper

Keyword(s):

Soil Quality ◽

Reference Values ◽

Water Retention ◽

Water Retention Curve ◽

Quality Indices ◽

Semideciduous Forest ◽

Retention Curve ◽

Physical Quality ◽

Soil Physical Quality ◽

Seasonal Semideciduous Forest

The concept of soil quality is currently the subject of great discussion due to the interaction of soil with the environment (soil-plant-atmosphere) and practices of human intervention. However, concepts of soil quality relate quality to agricultural productivity, but assessment of soil quality in an agronomic context may be different from its assessment in natural areas. The aim of this study was to assess physical quality indices, the S index, soil aeration capacity (ACt/Pt), and water storage capacity (FC/Pt) of the soil from a permanent plot in the Caetetus Ecological Reserve (Galia, São Paulo, Brazil) under a seasonal semideciduous forest and compare them with the reference values for soil physical quality found in the literature. Water retention curves were used for that purpose. The S values found were higher than the proposed limit for soil physical quality (0.035). The A and E horizons showed the highest values because their sandy texture leads to a high slope of the water retention curve. The B horizons showed the lowest S values because their natural density leads to a lower slope of the water retention curve. The values found for ACt/Pt and FC/Pt were higher and lower than the idealized limits. The values obtained from these indices under natural vegetation can provide reference values for soils with similar properties that undergo changes due to anthropic activities. All the indices evaluated were effective in differentiating the effects of soil horizons in the natural hydro-physical functioning of the soils under study.

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HYDRO-MICROBIOLOGICAL ATTRIBUTES OF THE SOIL IN EDGE OF SEASONAL SEMIDECIDUOUS FOREST FRAGMENT

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v7i1.3919 ◽

2020 ◽

Vol 7 (1) ◽

pp. 18-24

Author(s):

Karolayne Lemes D'Abadia ◽

Ane Gabriele Vaz Souza ◽

Gabriela Gomes da Silva Gomes da Silva ◽

Murilo Silva Machado ◽

Vagner Santiago do Vale Santiago do Vale ◽

...

Keyword(s):

Microbial Biomass ◽

Edge Effect ◽

Rainy Season ◽

Microbial Biomass Carbon ◽

Basal Respiration ◽

Metabolic Efficiency ◽

Forest Fragment ◽

Semideciduous Forest ◽

Carbon Release ◽

Seasonal Semideciduous Forest

Native forests have been suffering changes, such as fragmentation and edge effect, and these have implications for the dynamics of carbon within the same fragment, differentiating vegetation and soil. In this way, the work aimed to evaluate the hydro-microbiological attributes of the soil in rainy and dry periods, as well as to indicate if there is an edge effect in a seasonal semideciduous forest fragment. The study was carried out in a forest fragment in the area of the State University of Goiás, Ipameri Campus, consisting of three transects divided into three blocks from the edge. Sampling was performed in two periods of the year, rainy and dry, to determine the gravimetric soil water content (UG), microbial biomass carbon (MBC), basal respiration (BR), and the metabolic quotient (qCO2). The data were subjected to analysis of variance (F test), and when significant, the means were evaluated by the Tukey test at 5% probability. Response variations of microorganisms are closely related to the periods studied; the rainy season benefits the carbon incorporation activity, and the dry season stimulates the carbon release. Consequently, metabolic efficiency is more pronounced in the rainy season. The edge of the fragment only influenced the MBC, evidencing that disturbances caused at the extremity of fragment interfere with the C input in the microbial biomass.

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Biomass and Carbon in a Seasonal Semideciduous Forest in Minas Gerais

Floresta e Ambiente ◽

10.1590/2179-8087.050816 ◽

2018 ◽

Vol 25 (1) ◽

Cited By ~ 3

Author(s):

Helane França Silva ◽

Sabina Cerruto Ribeiro ◽

Soraya Alvarenga Botelho ◽

Gilberto Rodrigues Liska ◽

Marcelo Angelo Cirillo

Keyword(s):

Minas Gerais ◽

Semideciduous Forest ◽

Seasonal Semideciduous Forest

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Influence of bryophyte biomass and organic matter quantity on the abundance and richness of oligochaetes in forest streams with different phytophysiognomies in southeastern Brazil

Journal of Limnology ◽

10.4081/jlimnol.2016.1284 ◽

2016 ◽

Author(s):

Luciana Falci Theza Rodrigues ◽

Felipe Silveira Leite ◽

Roberto Da Gama Alves

Keyword(s):

Organic Matter ◽

Southeastern Brazil ◽

Tropical Region ◽

Positive Relation ◽

Semideciduous Forest ◽

Different Types ◽

Ecological Importance ◽

Forest Streams ◽

Favorable Conditions ◽

Seasonal Semideciduous Forest

<p>Aquatic oligochaetes can be found associated with different types of substrates; including bryophytes (mosses and liverworts) adhered to stones in lotic ecosystems. However, little information is available on the association between oligochaetes and bryophytes in tropical region. Therefore, the aims of this study were: to investigate whether the assemblages of oligochaetes respond to variation in the biomass of bryophytes and quantity of particulate organic matter (POM) present on these plants; verify differences in the composition of oligochaetes in streams flowing through areas with two phytophysiognomies (rocky field and seasonal semideciduous forest). The samples were collected from five first-order streams in the southeast of the state of Minas Gerais. Six samples of bryophytes adhered to stones were obtained from each stream. A total of 1586 oligochaetes were collected and 11 taxa were identified, belonging to the families Naididae and Enchytraeidae. The most abundant taxa were <em>Bothrioneurum</em> (37.95%) and Enchytraeidae (33.01%). A positive relation was observed between oligochaete abundance and POM in two streams (Ibitipoca I and Ibitipoca III) and a positive relation was found between oligochaete abundance and bryophyte biomass in one stream (Ibitipoca I). The composition of the fauna varied within and between the phytophysiognomies studied. The results show that the oligochaetes find favorable conditions to establish themselves in bryophytes, evidencing the ecological importance of these plants as habitat for invertebrates.</p>

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Acclimatization capacity of leaf traits of species co-occurring in restinga and seasonal semideciduous forest ecosystems

Environmental and Experimental Botany ◽

10.1016/j.envexpbot.2019.05.012 ◽

2019 ◽

Vol 164 ◽

pp. 190-202 ◽

Cited By ~ 1

Author(s):

Saulo Pireda ◽

Dhiego da Silva Oliveira ◽

Neilor Lacorte Borges ◽

Gabriel do Amaral Ferreira ◽

Laura Mathias Barroso ◽

...

Keyword(s):

Forest Ecosystems ◽

Leaf Traits ◽

Semideciduous Forest ◽

Seasonal Semideciduous Forest

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Floristic composition of the Seasonal Semideciduous Forest in Southern Brazil: Reserva Biológica das Perobas, State of Paraná

Acta Scientiarum Biological Sciences ◽

10.4025/actascibiolsci.v40i1.35753 ◽

2018 ◽

Vol 40 (1) ◽

pp. 35753

Author(s):

Greta Aline Dettke ◽

Laianne Mayara Pezenti Crespão ◽

Luciana Veríssimo Siquerolo ◽

Edemilson Luiz Siqueira ◽

Marcelo Galeazzi Caxambú

Keyword(s):

Floristic Composition ◽

Southern Brazil ◽

Semideciduous Forest ◽

Seasonal Semideciduous Forest

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Seasonal variation of consumption of the species used as fruit source by brown howler monkeys (Alouatta clamitans) in southern Brazil

Biota Neotropica ◽

10.1590/s1676-06032013000300019 ◽

2013 ◽

Vol 13 (3) ◽

pp. 148-153 ◽

Cited By ~ 3

Author(s):

Gisele Aparecida da Silva Doratti dos Santos ◽

Edmilson Bianchini ◽

Nelio Roberto dos Reis

Keyword(s):

Seasonal Variation ◽

Great Part ◽

Southern Brazil ◽

Forest Fragment ◽

Dry Period ◽

Semideciduous Forest ◽

Rainy Period ◽

Fruit Species ◽

Feces Analysis ◽

Seasonal Semideciduous Forest

Considering the seasonal variation of fruits availability in seasonal semideciduous forests, this study analyzed whether the richness of fruit species exploited by Alouatta clamitans is higher in the rainy period rather than the dry one. Plant species consumed were investigated by visualization and feces analysis, from July 2005 to June 2006, in a seasonal semideciduous forest fragment in Paraná state, Brazil. Ten species of fruits were consumed during the rainy period and 13 during the dry period: three were consumed exclusively during the rainy period; six exclusively during the dry period; and seven in months that covered both dry and rainy periods. The number of fruit species consumed during the rainy period was considerably lower than the expected richness. Moreover, among fruit species consumed during the rainy period, only four bear fruits mainly in this period of the year, the other species bear fruits in great part of it. Therefore, the selectivity of A. clamitans was mainly directed to species capable of providing fruits along the year, prioritizing these species even when other fruit sources are available.

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SEED BANK IN TWO SITES OF SEMIDECIDUOUS SEASONAL FOREST IN VIÇOSA, MINAS GERAIS

Revista Árvore ◽

10.1590/0100-67622016000300005 ◽

2016 ◽

Vol 40 (3) ◽

pp. 415-425 ◽

Cited By ~ 1

Author(s):

Antonio Jorge Tourinho Braga ◽

Eduardo Euclydes de Lima e Borges ◽

Sebastião Venâncio Martins

Keyword(s):

Seed Bank ◽

Floristic Composition ◽

Soil Samples ◽

Semideciduous Forest ◽

Bank Levy ◽

Successional Stages ◽

Semideciduous Seasonal Forest ◽

The Individual ◽

Seasonal Semideciduous Forest ◽

Distinct Period

ABSTRACT Aimed of this study was examine, describe and confronted the floristic composition and the density the seed bank in two successional stages of Seasonal Semideciduous Forest, in Viçosa, MG. Forty soil samples total in two distinct period (drought station finish and rainy station finis) and arranged for germinate in wooden boxes (0,5 x 0,5 x 0,1 m) in shading of 60%. The individual germination in each valuation epoch was compared utilizing the t test for independent samples; the test indicated one individual plants germination major in seed bank levy intermediary between epoch drought station finis and rainy station. Hundred nine taxons were sampled in the seed bank the forest altogether, 101 species were identified as belonging to 73 genera distributed among 40 families, 56 species commonness in two successional stages of forest and 49 species commonness of two levy period. Asteraceae was the families with the largest number of species as initial forest much as advanced forest, in both period of valuation. The herbaceous individuals predomination in all forests and valuation epoch, whit not representation the fragility of the seed bank.

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