Liana population structure in a seasonal semideciduous forest fragment in southern Brazil and in Amazon forest in east Ecuador

2016 ◽  
Author(s):  
Luciana de Campos Franci
Keyword(s):  
Population Structure ◽  
Amazon Forest ◽  
Southern Brazil ◽  
Forest Fragment ◽  
Semideciduous Forest ◽  
Seasonal Semideciduous Forest

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

2013 ◽  
Vol 13 (3) ◽  
pp. 148-153 ◽  
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.

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

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.

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

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

scholarly journals Bats (Mammalia: Chiroptera) in urban fragments of Maringá, Paraná, Brazil

Check List ◽  
2013 ◽  
Vol 9 (3) ◽  
pp. 524 ◽  
Author(s):  
Janaina Gazarini ◽  
Wagner André Pedro
Keyword(s):  
Atlantic Forest ◽  
Abundant Species ◽  
Urban Environments ◽  
The State ◽  
Anthropogenic Pressure ◽  
Southern Brazil ◽  
Subtropical Region ◽  
Semideciduous Forest ◽  
Artibeus Lituratus ◽  
Seasonal Semideciduous Forest

Bat assemblages in two urban fragments of Maringá city, north of the state of Paraná, southern Brazil, were inventoried. These fragments, Parque do Ingá (48 ha) and Parque Florestal dos Pioneiros (59 ha), are located in a subtropical region covered by semideciduous Atlantic forest. Bats were sampled with mist-nets from August 2006 to July 2007, over 24 nights (12 hours a night), adding up to a total of 30,240 h.m2 of net effort. A total of 839 individuals were captured belonging to 10 species and four families. Artibeus lituratus was the most abundant species (66% of the sample). The observed richness represents 22% of the bat species recorded for the state, 24% of the bat species occurring in the seasonal semideciduous forest of Paraná, 26% of the species previously recorded in urban environments in Brazil, and 83.4% of the estimated richness by Jackknife 1 (n= 12 species). Studies that provide data on richness and abundance of bat species in urban fragments are becoming increasingly important, but are still poorly available in Brazil. This habitat is especially interesting because anthropogenic pressure can be harmful to bat assemblages, reducing their diversity.

scholarly journals Orchid bees (Hymenoptera, Apidae, Euglossini) are seasonal in Seasonal Semideciduous Forest fragments, southern Brazil

2019 ◽  
Vol 59 ◽  
pp. e20195907 ◽  
Author(s):  
Cleiton Margatto ◽  
Vinicius Ortega Berno ◽  
Rodrigo Barbosa Gonçalves ◽  
Luiz Roberto Ribeiro Faria Jr.
Keyword(s):  
Species Abundance ◽  
Late Summer ◽  
Circular Statistics ◽  
Forest Fragments ◽  
Southern Brazil ◽  
Semideciduous Forest ◽  
Orchid Bees ◽  
Eulaema Nigrita ◽  
One Year ◽  
Seasonal Semideciduous Forest

Seasonal fluctuations in the abundance of orchid bees have already been reported. The variations in population dynamics may be expected to occur in more predictable and pronounced manners in environments with a clear distinction between rainy and dry seasons, where climatic variables are regarded to be good predictors of populational patterns. The main goal of this paper is to investigate the seasonality of males of orchid bees in fragments of Seasonal Semideciduous Forest in southern Brazil. Data comprise bait samples from five one-year periods on four forest fragments. The seasonality of species abundance was tested with circular statistics. Results suggest two phenological patterns, one for Eufriesea violacea (Blanchard), Eulaema nigrita Lepeletier and Euglossa cordata (Linnaeus), whose abundances are concentrated in late spring and early-middle summer and another for Euglossa fimbriata Moure with a tendency to be collected in middle-late summer and early autumn. These patterns are discussed, as well the possible driven factors, (i) the species life cycle and nesting behavior, (ii) synchrony with resource, and (iii) climate. We can postulate an important impact of climate change in local euglossine assemblage due to the small populations and marked seasonality.

FENOLOGIA DE Ocotea pulchella, Myrcia brasiliensis E Psidium cattleyanum, EM FLORESTA SEMIDECÍDUA DO SUL DO BRASIL

FLORESTA ◽  
2014 ◽  
Vol 44 (4) ◽  
pp. 657 ◽  
Author(s):  
Danielle Bauer ◽  
Andressa Müller ◽  
Milena Nunes Bernardes Goetz ◽  
Jairo Lizandro Schmitt
Keyword(s):  
Seasonal Pattern ◽  
Fruit Production ◽  
Circular Data ◽  
Atlantic Rain Forest ◽  
Southern Brazil ◽  
Forest Fragment ◽  
High Concentration ◽  
Semideciduous Forest ◽  
Reproductive Events ◽  
Leaf Appearance

Eventos vegetativos e reprodutivos de Ocotea pulchella (Nees) Mez (Lauraceae), Myrcia brasiliensis Kiaersk e Psidium cattleyanum Sabine (Myrtaceae) foram avaliados, em fragmento de floresta semidecidual secundária durante dois anos. Foi realizada uma análise estatística circular e as fenofases foram correlacionadas à temperatura, comprimento do dia e precipitação. A queda foliar e brotamento das espécies ocorreram continuamente durante o biênio caracterizando fraca sazonalidade. A floração, incluindo o surgimento de botões florais e antese, caracterizou um padrão sazonal nas três espécies. Myrcia brasiliensis e Psidium cattleyanum apresentaram grande concentração de indivíduos em torno da data média (r) para a fenofase frutos imaturos, enquanto que, em O. pulchella, a produção foi praticamente constante (r baixo). O surgimento dos frutos em P. cattleyanum e O. pulchella demonstrou relação com comprimento do dia e temperatura, nos dois anos. Todas as espécies apresentaram alta concentração de indivíduos com frutos maduros, em alguma época do ano, permitindo estimativa da data média desse evento reprodutivo e indicando sazonalidade no amadurecimento. As três espécies potencialmente podem oferecer recursos alimentares aos animais locais, principalmente as aves, porque os frutos maduros ficaram disponíveis ao longo do período inteiro.Palavras-chave: Fenofases; espécies arbóreas; floresta atlântica; Lauraceae; Myrtaceae. AbstractPhenology of Ocotea pulchella, Myrcia brasiliensis and Psidium cattleyanum in semideciduous forest in southern Brazil. We evaluated vegetative and reproductive events of Ocotea pulchella (Nees) Mez (Lauraceae), Myrcia brasiliensis Kiaersk and Psidium cattleyanum Sabine (Myrtaceae) in a secondary semideciduous forest fragment for two years. We performed a circular data analysis and we correlated phenophases to temperature, daylenght and rainfall. Leaf fall and leaf appearance occurred continuously during the biennium featuring a low seasonality. The flowering, including the emergence of floral buds and anthesis, featured a seasonal pattern. Myrcia brasiliensis and Psidium cattleyanum showed great concentration of immature fruits around the average date (r), while fruit production of O. pulchella was almost constant (low r). The appearance of the fruits in P. cattleyanum and O. pulchella revealed a connection between daylenght and temperature in both years. All species had high concentration of individuals with mature fruits at some time of the year, allowing estimation of the average date of the reproductive event and indicating seasonality of maturation. The three species may potentially provide food resources for local animals, mainly birds, because mature fruits were available throughout the entire period.Keywords: Phenophases; tree species; atlantic rain forest; Lauraceae; Myrtaceae.

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

2022 ◽  
pp. 125924
Author(s):  
Glaziele Campbell ◽  
Cátia Henriques Callado ◽  
Warlen Silva da Costa ◽  
Jonas de Brito Campolina Marques ◽  
Saulo Pireda ◽  
...  
Keyword(s):  
Growth Ring ◽  
Semideciduous Forest ◽  
Southeast Brazil ◽  
Seasonal Semideciduous Forest

scholarly journals ASSESSING THE CANOPY INTEGRITY USING CANOPY DIGITAL IMAGES IN SEMIDECIDUOUS FOREST FRAGMENT IN SÃO CARLOS - SP- BRAZIL1

2017 ◽  
Vol 41 (5) ◽  
Author(s):  
Thiago Yamada ◽  
Emerson Carlos Pedrino ◽  
João Juares Soares ◽  
Maria do Carmo Nicoletti
Keyword(s):  
Digital Image Analysis ◽  
Digital Images ◽  
Research Work ◽  
Canopy Structure ◽  
Canopy Cover ◽  
Relevant Information ◽  
Canopy Closure ◽  
Forest Fragment ◽  
Semideciduous Forest

ABSTRACT It is well-known that conducting experimental research aiming the characterization of canopy structure of forests can be a difficult and costly task and, generally, requires an expert to extract, in loco, relevant information. Aiming at easing studies related to canopy structures, several techniques have been proposed in the literature and, among them, various are based on canopy digital image analysis. The research work described in this paper empirically compares two techniques that measure the integrity of the canopy structure of a forest fragment; one of them is based on central parts of canopy cover images and, the other, on canopy closure images. For the experiments, 22 central parts of canopy cover images and 22 canopy closure images were used. The images were captured along two transects: T1 (located in the conserved area) and T2 (located in the naturally disturbance area). The canopy digital images were computationally processed and analyzed using the MATLAB platform for the canopy cover images and the Gap Light Analyzer (GLA), for the canopy closure images. The results obtained using these two techniques showed that canopy cover images and, among the employed algorithms, the Jseg, characterize the canopy integrity best. It is worth mentioning that part of the analysis can be automatically conducted, as a quick and precise process, with low material costs involved.

scholarly journals SOIL SEED BANK IN SEASONAL SEMIDECIDUOUS FOREST AND ABANDONED PASTURE

2016 ◽  
Vol 40 (6) ◽  
pp. 991-1001 ◽  
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.

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

2014 ◽  
Vol 38 (2) ◽  
pp. 444-453 ◽  
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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