semideciduous seasonal forest
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Phytotaxa ◽  
2021 ◽  
Vol 520 (3) ◽  
pp. 273-278
Author(s):  
JENIFER DE CARVALHO LOPES ◽  
LUCAS VILELA ◽  
DAVID M. JOHNSON

The Atlantic Forest is a biodiversity hotspot that includes different types of phytophysiognomies, mainly forests. Hornschuchia, Annonaceae, is one of its endemic genera. Eight Hornschuchia species are found in the tropical moist forest, three of them both occurring in tropical moist forest and tabuleiro forest, a semideciduous seasonal forest, one occurs in the coastal semideciduous seasonal forest and two inhabit the semideciduous seasonal forest and deciduous seasonal forest far from the coast in Bahia. Here we describe the twelfth species of Hornschuchia, which occurs in the Bahian semideciduous seasonal forest, and present a morphological description, illustration, distribution map and assessment of its conservation status.


2021 ◽  
Vol 47 (2) ◽  
pp. 375-383
Author(s):  
Brenda Dessbesell Stahlhöfer ◽  
Alana Rafaela Borsekowsky

This study aimed to compare the mosquito fauna found in three remnant forest fragments of a semideciduous seasonal forest by using oviposition traps in the northwestern region of the state of Rio Grande do Sul, Brazil. Between 2018 and 2019, larvae were collected quarterly in three forest fragments, one situated in an urban area, another in a rural area close to the city and a third formed by an extensive area of native forest far from the urban environment. Four species were caught: Aedes terrens (Walker, 1856) (282), Limatus durhamii Theobald, 1901 (30), Aedes aegypti (Linnaeus, 1762) (23) and Toxorhynchites theobaldi (Dyar and Knab, 1906) (6). The Morisita-Horn index indicated a high similarity between the fragments studied (>80%). The mean number of mosquitoes collected. in the rural area was significantly higher than in the other areas (F = 6.073; d.f. = 17; p <0.05). The calculation of the phi coefficient to assess the co-occurrence of two species in the same trap did not indicate significant values (p> 0.05). Aedes terrens demonstrated a good ability to colonize and inhabit the different types of forest fragments studied. In addition, the forest fragment located in a rural area close to the urban area offered conditions for the survival of species of wild and urban mosquitoes, such as Ae. aegypti.


2021 ◽  
Vol 43 ◽  
pp. e54558
Author(s):  
Patrícia Patrícia Pereira Gomes ◽  
Alex Sandro Barros de Souza ◽  
Jean Victor Nery da Silva ◽  
Amanda da Silva Ferreira ◽  
José Adolfo Mota de Almeida ◽  
...  

Harvestmen are arachnids that play an important role in organic matter breakdown. However, there are many ecosystems in Brazil, including Conservation Units, which lack information about these organisms or are sub-sampled. Even in areas of Atlantic forest, a biome that hosts the greatest diversity and endemic rates of these arthropods in the world. In this perspective, the purpose of this study was to survey the harvestmen fauna in areas of Semideciduous Seasonal Forest in the Ilha Grande National Park, Paraná, southern Brazil, from February to November 2019, totaling 15 days and 60 hours, on six islands in the Paraná River. A total of 170 specimens was collected, distributed in five genera, comprising two species and three morphotypes. The low species richness may reflect the isolation of populations imposed by the island effect, however the study expanded the geographic distribution of Parapachyloides uncinatus and Discocyrtus invalidus, for which until then there was no record of occurrence in the Paraná State.


2021 ◽  
Vol 12 (4) ◽  
Author(s):  
Flávio Eduardo Vilas Boas Júnior ◽  
Amanda Da Silva Ferreira ◽  
Marcos Magalhães De Souza

The fragmentation process that has altered natural environments has been widely discussed, as it causes changes in communities and compromises different environmental functions. In this sense, this study was based on the evaluation of fragmentation on araneofauna of semideciduous seasonal forest fragments, phytophysiognomy belonging to the Atlantic Forest. The study was conducted in three fragments in the municipality of Inconfidentes, southern Minas Gerais, from April 2014 to March 2015. The results showed that there is a similarity in the composition of spider species among the sampled fragments and that the size of the fragment is positively correlated with species richness. Our data show that smaller fragments must be preserved and that agricultural areas maintain the integrity of adjacent forest areas to benefit from the predation dynamics that spiders exert on pests that affect plantations.


Biotemas ◽  
2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Alex Sandro Barros de Souza ◽  
Marcos Magalhães de Souza ◽  
Patrícia Pereira Gomes ◽  
Jean Victor Nery da Silva ◽  
Giuliano Kaulfuss Bertinoti ◽  
...  

Calliphoridae and Mesembrinellidae include Diptera species that are good indicators of changes in forest environments. The present work aimed to inventory the Calliphoridae and Mesembrinellidae in Ilha Grande National Park and correlate the abundance of these organisms with environmental variables. Adult dipterans were collected during two expeditions in 2019 using two sampling methods, a Malaise trap and baited traps, distributed on two islands in the park. During the study, 1,007 individuals of 12 species of Calliphoridae and four species of Mesembrinellidae were collected. Family Calliphoridae was more abundant (97.12%). The abundance of native species showed a strong negative correlation with the abundance of the genus Chrysomya. Rodrigues Island (Island I) had higher diversity levels and no species of Chrysomya were recorded in this area, which may indicate a greater degree of environmental preservation. The results indicate that human action in natural environments can negatively impact species diversity, as found in Ilha Grande National Park that, historically, was partially occupied and is still in the process of regeneration.


Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Diego Costa Farias ◽  
Natanael Costa Rebouças ◽  
Thales Silva Coutinho ◽  
Rayane de Tasso Moreira Ribeiro ◽  
Maria Iracema Bezerra Loiola

Abstract This study aimed to carry out a taxonomic floristic survey of species in the genus Ditassa (Asclepiadoideae/Apocynaceae), as part of the “Flora do Ceará: knowing to conserve” project. The study was based on the analysis of morphological characters of specimens from representative herbaria for the genus. The identifications were performed using specialized bibliography and confirmed by analyzing type collections. For Ceará state, six species of Ditassa were registered: D. blanchetii, D. capillaris, D. dardanoi, D. glaziovii, D. hastata and D. hispida. The species occur in Savana (Cerrado), Stepic Savanna (Caatinga/Carrasco), Dense Ombrophilous Forest (Wet forest) and Lowland Semideciduous Seasonal Forest (Tableland forest). Only D. capillaris and D. hastata were recorded in Conservation Units.


Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Janaine Kunrath Hammes ◽  
Marizete Gonçalves da Silva ◽  
Cíntia Kameyama ◽  
Lívia Godinho Temponi

Abstract Species of Acanthaceae are predominantly associated with conserved forest environments such as Iguaçu National Park (PARNA Iguaçu), which is composed of Semideciduous Seasonal Forest and Araucaria forest. The aim of this work was to perform a floristic study of Acanthaceae of PARNA Iguaçu, with botanical illustrations, an identification key and descriptions of the species. Collections were carried out monthly from August 2015 to July 2016, in the areas of Céu Azul, Capanema and Foz do Iguaçu. The individuals collected were deposited in the UNOP herbarium and the specimens present in the herbaria EVB, HCF, MBM and UNOP, as well as in the virtual herbaria Reflora and SpeciesLink, were analyzed. A total of 13 native species were recorded from Atlantic Forest, distributed in seven genera. Justicia was the most representative, with five species. In all, 12 new records were made for PARNA Iguaçu, of which eight are new records for Semideciduous Seasonal Forest. Of the species found, three are threatened with extinction, one of which is considered vulnerable and two are categorized as endangered, which reinforces the role of PARNA Iguaçu in in-situ conservation in the state of Paraná.


2021 ◽  
Vol 9 (1) ◽  
pp. 47-51
Author(s):  
Jean Victor Nery da Silva ◽  
Alex Sandro Barros de Souza ◽  
Giuliano Kaulfuss Bertinoti ◽  
Patrícia Pereira Gomes ◽  
José Adolfo Mota de Almeida ◽  
...  

2020 ◽  
Author(s):  
Wiane Meloni Silva ◽  
Sebastião Venâncio Martins ◽  
Ricardo Alcántara de la Cruz ◽  
Carlos Moreira Miquelino Eleto Torres ◽  
Luiz Henrique Elias Cosimo ◽  
...  

Abstract Background: Coffee and livestock degrade Seasonal Semideciduous Forests in the Zona da Mata region of the Atlantic Forest biome in Brazil. The floristic composition must be studied to preserve and conserve forest remnants. The objective was to evaluate the arboreal structure, characterize the seed dispersal syndrome and the ecological group of forest species of a 45-year-old restored area in Viçosa, Minas Gerais state, Brazil. The phytosociological parameters density, frequency, dominance and importance value, Shannon's diversity and Pielou's equability were evaluated considering individuals with DBH (diameter at breast height) ≥ 5 cm in sixteen contiguous plots (25 x 25 m). Results: A total of 1,323 individuals from 109 species and 35 botanical families were registered, of which 90 were native and 15 exotic species. The importance value (VI= 11.9%) was highest for Guarea guidonia (Fabaceae). The Shannon's diversity (H') was 3.46 and the equability (J') was 0.74. The number of species (33%) was largest for the initial secondary successional class and the number of individuals with zoochoric dispersion syndrome for the late secondary class (38.3%). The basal area was 44.1 m² ha-1 and the average height was 13 m (ranging from 2 to 32 m). Conclusion: The restored Semideciduous Seasonal Forest is in an advanced successional stage with zoochoric species and a great number of late secondary species.


2020 ◽  
Vol 42 ◽  
pp. e52154
Author(s):  
Anderson Polli ◽  
Mariza Barion Romagnolo ◽  
Luis Antonio de Souza ◽  
Lindamir Hernandez Pastorini

Aiming to compare morphofunctional features related to dispersion and establishment of plants, this study evaluated seed biometry and biomass, as well as germination and emergence potential in eight plant species native to the Semideciduous Seasonal Forest. Biometric measurements and biomass of seeds were obtained with a caliper and a precision scale. Afterwards, they were subjected to a germination test in BOD chambers under constant temperature and 12 hours photoperiod, and sown in styrofoam trays containing organic substrate and sand, kept in full sunlight. Data from germination and emergence was subjected to cluster analysis, according to the functional morphotype of the seedling. Most species presented seeds with a rounded shape, uniform staining at the mature stage, varied coat consistency, two types of dispersal syndromes (anemochory and zoochory) and four morphofunctional patterns in developing seedlings (crypto-hypogeal-storers, crypto-epigeal-storers, phanero-epigeal-storers and phanero-epigeal-foliaceous). The species belonging to group I (Albizia niopoides, Cedrela fissilis, Pterogyne nitens and Randia ferox) have foliaceous photosynthetic cotyledons and group II (Cabralea canjerana, Eugenia pyriformis, Inga laurina and Poecilanthe parviflora) have a reserve cotyledon. Species of group I had higher means in the percentage and rate of germination, less variability and amplitude of days for seedlings emergence. On the other hand, species of group II showed higher mean values in seed biometry and biomass. Thus, seeds with foliaceous cotyledons have an optimized development because of luminosity, whereas seeds with reserve tend to have slower development, remaining at the seedling stage for a longer time.


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