scholarly journals Species composition of climbers in seasonal semideciduous forest fragments of Southeastern Brazil

2009 ◽  
Vol 9 (4) ◽  
pp. 175-188 ◽  
Author(s):  
Karin dos Santos ◽  
Luiza Sumiko Kinoshita ◽  
Andréia Alves Rezende
Keyword(s):  
Floristic Composition ◽  
Southeastern Brazil ◽  
Forest Site ◽  
Forest Fragments ◽  
Semideciduous Forest ◽  
Number Of Species ◽  
Forest Sites ◽  
Forest Remnants ◽  
Mean Similarity ◽  
Made In

In this study we evaluated floristic composition patterns of communities of climbers within ten inventories carried out in semideciduous forest fragments of southeastern Brazil. One of the inventories is original, being carried out for the present study in Ribeirão Cachoeira forest, Campinas, São Paulo State, Southeastern Brazil. This inventory was then pooled together to other nine climbers' inventories made in other forests of Southeastern Brazil to form a data base, which was examined regarding species richness, similarity, species distribution and climbing methods. The total number of species obtained was 355, belonging to 145 genera and 43 families. The ten most diverse families Bignoniaceae (45 species), Fabaceae (42), Malpighiaceae (36), Asteraceae (31), Apocynaceae (29), Sapindaceae (28), Convolvulaceae (21), Cucurbitaceae (14), Passifloraceae (10), and Euphorbiaceae (8) contributed to 74.4% of the total number of species recorded. The commonest climbing method in the studied sites was main stem or branch twining, accounting for 178 species or 50.1% of the total, the second commonest was tendril climbing (121 species, 34.1%), and the least, scrambling (56 species, 15.8%). We found a high percentage of exclusive species i.e., those occurring in only one forest site, which accounted for 49.3% of the total recorded. The mean similarity among forest sites (30%) may be considered low. The climbing species contribution to the total wood plant richness recorded on the forests sites was very high in some of the sites (up to 52.5%). These results indicated the importance of climber communities to plant diversity for semideciduous forests in Southeastern Brazil, enhancing the regional diversity and the conservation value of these forest remnants.

scholarly journals An Ecological Comparison of Floristic Composition in Seasonal Semideciduous Forest in Southeast Brazil: Implications for Conservation

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Sérgio de Faria Lopes ◽  
Ivan Schiavini ◽  
Ana Paula Oliveira ◽  
Vagner Santiago Vale
Keyword(s):  
Indicator Species ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Southeastern Brazil ◽  
Successional Stage ◽  
Semideciduous Forest ◽  
Hymenaea Courbaril ◽  
Forest Sites ◽  
Copaifera Langsdorffii ◽  
Seasonal Semideciduous Forest

We examined floristic patterns of ten seasonal semideciduous forest sites in southeastern Brazil and conducted a central sampling of one hectare for each site, where we took samples and identified all individual living trees with DBH (diameter at breast height, 1.30 m) ≥4.8 cm. Arboreal flora totaled 242 species, 163 genera, and 58 families. Fabaceae (38 species) and Myrtaceae (20 species) were families with the largest number of species. OnlyCopaifera langsdorffiiandHymenaea courbariloccurred at all sites. Multivariate analysis (detrended correspondence analysis and cluster analysis) using two-way indicator species analysis (TWINSPAN) indicated the formation of a group containing seven fragments in whichSiparuna guianensiswas the indicator species. This analysis revealed that similarities between studied fragments were due mainly to the successional stage of the community.

scholarly journals Medium-sized and large mammals of the Floresta da Cicuta Area of Relevant Ecological Interest, a protected area in southeastern Brazil

Check List ◽  
2021 ◽  
Vol 17 (5) ◽  
pp. 1421-1436
Author(s):  
Sandro Leonardo Alves ◽  
Jeferson de Paula Miranda ◽  
Paulo Sérgio do Nascimento Furtado ◽  
Fúlvia Cristiny Tereza Nelis ◽  
Hugo Leonardo Domingues de Paula ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Camera Traps ◽  
Southeastern Brazil ◽  
Forest Fragments ◽  
Large Mammals ◽  
Semideciduous Forest ◽  
Domestic Species ◽  
Direct Observations ◽  
Forest Remnants ◽  
Chrysocyon Brachyurus

The Atlantic Forest is one of the most biodiverse biomes in the world and has been severely degraded and fragmented, with the extirpation of most medium-sized and large vertebrates from the forest remnants. Here we present the results of a survey of medium-sized and large mammals in an area of protected seasonal semideciduous forest, the Floresta da Cicuta Area of Relevant Ecological Interest (ARIE-FC), Rio de Janeiro, Brazil, part the Atlantic Forest biome. We used camera traps (2,257 camera days) and direct observations over a 23-month period. We recorded 19 species (including two domestic species), seven of which are classified as at-risk, such as Leopardus guttulus (Hensel, 1872), Sylvilagus tapetillus Thomas, 1913, Alouatta clamitans Cabrera, 1940, and Chrysocyon brachyurus (Illiger, 1815). A diverse terrestrial mammal assemblage in the ARIE-FC reinforces the importance of small forest fragments for the conservation of biodiversity in human-modified landscapes of the Brazilian Atlantic Forest.

Comparison of the woody flora and soils of six areas of montane semideciduous forest in southern Minas Gerais, Brazil

1994 ◽  
Vol 51 (3) ◽  
pp. 355-389 ◽  
Author(s):  
A. T. Oliveira-Filho ◽  
E. A. Vilela ◽  
M. L. Gavilaness ◽  
D. A. Carvalho
Keyword(s):  
Community Structure ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Rio Grande ◽  
Minas Gerais ◽  
Southeastern Brazil ◽  
Semideciduous Forest ◽  
Qualitative And Quantitative ◽  
Gallery Forests ◽  
Upper Rio Grande

Qualitative and quantitative descriptions of the woody flora and soil analyses are provided for six areas of montane semideciduous forest in the upper Rio Grande region, southern Minas Gerais, Brazil. Comparisons are made of the floristic composition of these six areas and 24 other forest areas of southeastern Brazil using ordination by detrended correspondence analysis (DCA) and hierarchical classifications, both agglomerative (upgma) and divisive (twinspan). The variation in community structure of five of the six forest areas was analysed using a two-way table yielded by twinspan. The floristic analyses indicated the strongest link between the forests of the upper Rio Grande region and other montane forest formations of southeastern Brazil as well as secondary links with the gallery forests that extend into the cerrado domain and the submontane semideciduous forests of the Rio Parana basin. Variations in community structure among the five forest areas were apparently associated mainly with riverside effects and soil fertility.

scholarly journals Floristic structure and composition of Guadua forests in the Colombian coffee region1

2019 ◽  
Vol 49 ◽  
Author(s):  
Fernando Ramírez-Díaz ◽  
Juan Carlos Camargo-García
Keyword(s):  
Urban Expansion ◽  
Floristic Composition ◽  
Diversity Indices ◽  
Agricultural Activity ◽  
Forest Fragments ◽  
Forest Remnants ◽  
Fragmented Forests ◽  
Beta And Gamma Diversity ◽  
High Degree ◽  
Floristic Structure

ABSTRACT In the coffee region (900-2,000 m a.s.l.) of the Colombian Andes, the forest remnants correspond mainly to fragments dominated by the bamboo species Guadua angustifolia Kunth (Guadua). These highly fragmented forests are found in landscapes with a high degree of transformation due to the agricultural activity and urban expansion. With the purpose of contributing to the knowledge of the ecological characteristics of these forests, the floristic structure and composition (alpha, beta and gamma diversity) of seven forest fragments located in the middle (Quindío) and lower basins of the La Vieja river (Risaralda) were studied. A total of 70,961 individuals and 172 species belonging to 54 families were found. Fifty percent of the families were represented by only one species, and the families Araceae and Leguminosae showed the highest taxonomic richness, respectively with 21 and 14 species. The diversity indices for these forests revealed values comparable to those of tropical forest ecosystems (Shannon-Weiner values between 3,167 and 3,798). Likewise, the cluster analysis (based on Euclidean distances) showed that the stands present a similarity below 0.65 (65 %), associated with the 35 species reported, in seven fragments that characterize a varied floristic composition. This finding implies that these fragments should not be seen as isolated units, but as sites embedded in a diverse regional landscape. This represents important habitats for these species, which are capable of maintaining significant levels of diversity, even under management conditions.

scholarly journals Tree species richness and composition in a fragmented landscape of the Brazilian lowland Atlantic Forest

Rodriguésia ◽  
2020 ◽  
Vol 71 ◽  
Author(s):  
Solange de Vasconcellos Albuquerque Pessoa ◽  
Dorothy Sue Dunn de Araujo
Keyword(s):  
Tropical Forests ◽  
Biological Diversity ◽  
Floristic Composition ◽  
Southeastern Brazil ◽  
Fragmented Landscape ◽  
Floristic Similarity ◽  
Forest Diversity ◽  
Tree Layer ◽  
Α Diversity ◽  
Forest Remnants

Abstract Tropical forests are one of the most important ecosystems and loss of biological diversity in these is a major concern. We studied seven forest remnants on the coast of Rio de Janeiro, southeastern Brazil, three medium-sized (24-63 ha) and four small (5-11 ha), to assess the influence of size, degree of disturbance and isolation on composition and diversity of the tree layer. A total of 443 species in 60 families and 185 genera were recorded, with Myrtaceae, Lauraceae and Fabaceae being the most species-rich families. The results showed areas of high α-diversity (α= 34.86-75.69) and a slightly greater decline of similarity with distance between the study areas. Remnant size not explained the variation in the species composition and we found correlation between the level of disturbance and the floristic composition. The remnants had low floristic similarity, strongly influenced by the degree of disturbance. Results suggest that disturbance influences composition and diversity and confirm the importance of including both medium-sized and small remnants in the conservation of tropical forest diversity.

scholarly journals Species-Area Relationships Induced by Forest Habitat Fragmentation Apply Even to Rarely Detected Organisms

2021 ◽  
Vol 14 ◽  
pp. 194008292110173
Author(s):  
Ana Filipa Palmeirim ◽  
Rafael de Fraga ◽  
Marcus V. Vieira ◽  
Carlos A. Peres
Keyword(s):  
Biodiversity Loss ◽  
Forest Fragments ◽  
Detection Rates ◽  
Conservation Policies ◽  
Number Of Species ◽  
Continuous Forest ◽  
Forest Sites ◽  
Species Area ◽  
Riparian Habitats ◽  
Forest Islands

Neotropical snakes have extremely low detection rates, hampering our understanding of their responses to habitat loss and fragmentation. We addressed this gap using a limited sample (50 individuals, 16 species) across 25 variable-size insular forest fragments within a hydroelectric lake and four adjacent mainland continuous forest sites, in Central Brazilian Amazonia. The number of species recorded on forest islands (1.55 [Formula: see text] 0.78) was much lower than that at continuous forest sites (5.0 [Formula: see text] 3.1), with no snakes being recorded at twelve islands smaller than 30 ha. As such, snake assemblages were positively affected by forest area, explaining 48% of the number of species, and negatively affected by island isolation. The markedly higher number of species recorded across continuous forest sites likely results from the availability of riparian habitats, which have virtually disappeared from the archipelagic landscape given the widespread inundation of lowland areas. To prevent further severe biodiversity loss, including those of poorly known rare taxa, conservation policies should avert the additional construction of mega-dams that create myriad of small islands, in addition to extensive reservoir lakes from which all riparian habitats are eliminated.

scholarly journals Ferns and Lycophytes from fragments of semideciduous forest in central Espírito Santo, Brazil

Rodriguésia ◽  
2017 ◽  
Vol 68 (5) ◽  
pp. 1977-1986 ◽  
Author(s):  
Nelson Túlio Lage Pena ◽  
Felipe Zamborlini Saiter ◽  
Glória Maria de Farias Viégas-Aquije
Keyword(s):  
First Record ◽  
Forest Fragments ◽  
Disturbance History ◽  
Effective Protection ◽  
Semideciduous Forest ◽  
Espírito Santo ◽  
Forest Remnants ◽  
Fern Species ◽  
Main Representative ◽  
Espirito Santo

Abstract This study presents a checklist of lycophytes and ferns from secondary semideciduous forests in São João de Petrópolis, Santa Teresa, Espírito Santo, Brazil. We recorded 37 species (four lycophytes and 33 ferns) belonging to nine families and 17 genera. Selaginella is the only genus representing lycophytes whereas Adiantum, Anemia and Asplenium are the main representative genera for ferns. Most species are lithophytes (48.6%) or terrestrial (21.6%). Epiphytes are scarce (8.2%), and we did not record any arborescent, hemiepiphyte or scandent species. Climate seasonality, reduced size of forest fragments, and disturbance history may explain the low richness in the site. We recorded the occurrence of a regionally threatened fern species, namely, Asplenium austrobrasiliense, and revealed the first record of Asplenium otites in Espírito Santo. This demonstrates the biological relevance of semideciduous forest remnants in Espírito Santo and reinforces arguments for their effective protection.

scholarly journals Vascular epiphytes in seasonal semideciduous forest in the Espírito Santo State and similarity with other seasonal forests in Eastern Brazil

2016 ◽  
Vol 38 (2) ◽  
pp. 169 ◽  
Author(s):  
Dayvid Rodrigues Couto ◽  
André Paviotti Fontana ◽  
Ludovic Jean Charles Kollmann ◽  
Vitor Da Cunha Manhães ◽  
Talitha Mayumi Francisco ◽  
...  
Keyword(s):  
Floristic Composition ◽  
Tropical Rainforests ◽  
Forest Fragments ◽  
Semideciduous Forest ◽  
Espírito Santo ◽  
Vascular Epiphytes ◽  
Eastern Brazil ◽  
Composition And Structure ◽  
Espirito Santo ◽  
Seasonal Semideciduous Forest

 In this study, we evaluated the floristic composition of vascular epiphytes in seasonal semideciduous forest fragments of the Itapemirim River basin, Southern State of Espírito Santo, in order to verify its similarity to other semideciduous forests studied in Brazil. Excursions were conducted every fortnight between June 2008 and May 2009, and epiphytes were collected and recorded (55 species, 34 genera and six families). Orchidaceae (21 species) was the richest family, whereas the genera presenting the greatest richness were Tillandsia (seven), Rhipsalis (four), Aechmea, Epidendrum and Peperomia (three species each). The category the most representative was characteristics holoepiphytes (84%). The riparian forests were the most important environments for the epiphytic flora. Similarity analysis and PCA supported four groups, where the study area appears disjointed from the others, supporting the hypothesis that geographical proximity, elevation and climate have a strong effect on the floristic composition, conditioning the formation of distinct floras. Detailed surveys on the floristic composition and structure of this community are important for the elaboration of studies on coherent environmental impacts, since epiphytes are typical in tropical rainforests, and they are an important floristic, structural and functional component of these ecosystems. 

scholarly journals Ecological Characteristics That Enhance Broussonetia papyrifera’s Invasion in a Semideciduous Forest in Ghana

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
B. Kyereh ◽  
V. K. Agyeman ◽  
I. K. Abebrese
Keyword(s):  
Seed Germination ◽  
Seed Viability ◽  
Forest Degradation ◽  
Forest Site ◽  
Ecological Traits ◽  
Semideciduous Forest ◽  
Forest Sites ◽  
Regenerated Plants ◽  
Disturbed Forest ◽  
Effect Of Light

Broussonetia papyrifera (L.) Vent. (Moraceae) was introduced to Ghana in 1969 and has since become second only to Chromolaena odorata as an invasive species in Ghanaian forests. This study determined its ecological traits that enhance its invasion of plant communities. Fruiting and viability patterns were studied through monthly monitoring of 985 trees (≥6 cm gbh) in one forest site. The effect of light on its seed germination was tested in light-proof boxes. Means of propagation were determined by tracking the origin of newly regenerated plants on a newly cleared plot of land that B. papyrifera had occupied. It fruited twice a year with one season (January–March) producing more fruits than the other (July-August). Fruiting occurred in trees as small as 9 cm gbh but the percentage of individuals fruiting in each size class increased with tree size. There was a clear pattern of seed viability during the January–March fruiting period. The species did not appear to have a naturally high seed viability with germination always below 50% of each weekly collection. Seed germination was depressed in dark. These results suggest that the species may be competitive in disturbed forest sites and therefore its spread may be aided by forest degradation.

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