scholarly journals The effect of fragmentation on spider richness (Arachnida: Araneae) in montane semideciduous seasonal forest

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.

Author(s):  
Mauricio Almeida‐Gomes ◽  
Nicholas J. Gotelli ◽  
Carlos Frederico Duarte Rocha ◽  
Marcus Vinícius Vieira ◽  
Jayme Augusto Prevedello

Rodriguésia ◽  
2019 ◽  
Vol 70 ◽  
Author(s):  
Andréia Zelenski ◽  
Rafael Louzada

Abstract A taxonomic treatment of the genera Turnera and Piriqueta in the state of Pernambuco, northeastern Brazil, is presented. Fourteen species of Turnera and six species of Piriqueta were found in the Atlantic Forest and Caatinga, of which nine are endemic to Brazil. Turnera pernambucensis is threatened and restricted to the Atlantic Forest of Pernambuco, while T. joelii is a new record for the state. The species predominate in steppe savanna and semideciduous seasonal forest, but several of them grow naturally in anthropized areas. Catimbau National Park is the locality with the highest species richness. Tristyly is recorded for the first time in Piriqueta guianensis. Identification keys, descriptions, illustrations, distribution maps, and comments about habitat, flowering, fruiting, and morphological relationships are provided.


Revista CERES ◽  
2012 ◽  
Vol 59 (5) ◽  
pp. 571-579 ◽  
Author(s):  
Kelen Coelho Cruz ◽  
Sileimar Maria Lelis ◽  
Mariana Aparecida Silva Godinho ◽  
Rúbia Santos Fonseca ◽  
Paulo Sérgio Fiúza Ferreira ◽  
...  

The objectives of this study were to identify anthophilous butterflies on psychophilous flowers of four Asteraceae species in an Atlantic Forest fragment in Viçosa, Minas Gerais State, Southeastern Brazil, and to determine whether there are species in common with other lepidopteran inventories of the Southeastern and Midwestern regions of Brazil. It is the first inventory of anthophilous butterflies of a semideciduous forest fragment in Zona da Mata, State of Minas Gerais. A total of 108 species were recorded, representing the fourth largest lepidopteran survey in this State. The results demonstrated that Asteraceae species may be important tools for monitoring anthophilous butterflies. The similarity with other inventories ranged from 1 to 92.55%. Fifteen species were reported for the first time in the State of Minas Gerais, and among them, Melanis alena and Thisbe irenea were observed in this study only.


Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Libia Mayerly Cifuentes-García ◽  
Pedro Bond Schwartsburd ◽  
Denilson Fernandes Peralta

ABSTRACT The objective was to present the floristic survey of the bryophytes of the Parque Estadual da Serra do Brigadeiro. It included an evaluation of the species richness, as well as information about the substrate preference of each species and its geographic distributions in Brazil. We found 208 taxa of bryophytes: one hornwort, 88 liverworts and 119 mosses. This richness represents ca. 26% of the bryoflora of Minas Gerais State and ca. 13% of that known for Brazil. Eighteen of the bryophytes species are endemic to Brazil, whereas 19 species are recorded for the first time in Minas Gerais. The bryoflora showed preference for tree bark (30%) and rock (23%) as substrates. Our data show that the Parque Estadual da Serra do Brigadeiro is an important area for the diversity conservation of Brazilian bryophytes and maintenance of endemic species of the country.


Phytotaxa ◽  
2021 ◽  
Vol 497 (3) ◽  
pp. 229-246
Author(s):  
ELMAR J. HENTZ JÚNIOR ◽  
JANAINE K. HAMMES ◽  
MEL C. CAMELO ◽  
MARCUS A.N. COELHO ◽  
LÍVIA G. TEMPONI

In Brazil, the family Araceae has 47 genera, approximately 519 species, 276 of which are endemic, it is characterized by the presence of the spadix associated with a bract, the spathe, and its one of the families with the highest species richness for the Atlantic Forest. This survey aims to inventory the Araceae of the Serra do Brigadeiro State Park (PESB), providing identification keys, descriptions, photos, and illustrations of diagnostic characters of the species, contributing to the Araceae Flora for Minas Gerais. To collect data, field trips were carried out in November 2018, July 2019, and February 2020, and the collected materials were deposited in the UNOP and RB herbaria. A total of 13 species, belonging to three genera, were documented. The genus Anthurium was the most diverse with eight species, followed by Philodendron with four species and Asterostigma with only one species. Through this survey, two species of Anthurium were found (A. atrovinosum and A. brigadeiroense) and recently described. Also, A. comtum, A. gladiifolium, and P. edmundoi are new for this area, and A. fontellanum was collected for the first time since 2004, reinforcing the importance of floristic studies and the conservation of Atlantic Forest remnants, such as the PESB.


Oryx ◽  
1995 ◽  
Vol 29 (3) ◽  
pp. 192-196 ◽  
Author(s):  
Stephen F. Ferrari ◽  
Vânia H. Diego

Reduced to a tiny fraction of its original area, much of the Atlantic Forest habitat remaining in eastern Brazil is distributed in small, isolated patches on private land. The potential role of these fragments in the conservation of the region's primate fauna is poorly understood. As part of a study of buffy-headed marmosets Callithrix flavicepsin Minas Gerais, forest remnants were visited in order to evaluate this potential. Marmosets were observed in one-third of the sites and may exist in up to 60 per cent of forest patches in the region. A second threatened primate, the brown howler monkeyAlouatta fusca,may occur in one-quarter of the sites visited. The muriquiBrachyteles arachnoideswas not encountered. Overall, the survey suggests that, with appropriate management, privately owned forest fragments may play an increasingly important role in the conservation of the Atlantic Forest's fauna in this and other regions.


Zootaxa ◽  
2006 ◽  
Vol 1123 (1) ◽  
pp. 1 ◽  
Author(s):  
PAULO S.F. FERREIRA ◽  
EVALDO M. PIRES ◽  
ALEXANDRE S. DE PAULA ◽  
L. A. COELHO

We present for the first time the geographic distribution of mirids in the state of Minas Gerais, Brazil, taking into account the vegetation areas, climate features, and species richness. All the information about species distribution in Minas Gerais was obtained using references on Neotropical Miridae and data labels of specimens deposited in National collections. Minas Gerais represents the largest diversity of mirids in Brazil, 311 species. The mirids were collected in 42 counties in Minas Gerais. They are present in all the 4 major biomes of the State. The Atlantic Forest has the greatest richness, with 214 species, followed by Cerrado with 128 species. We suggest that the diversity of Minas Gerais mirids began in the Atlantic Forest. Fisher's PLSD test among mirid subfamilies at different elevations, temperatures, and precipitations showed a significant effect of elevation only.


2004 ◽  
Vol 76 (2) ◽  
pp. 429-434 ◽  
Author(s):  
Luiz dos Anjos

Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment). However, these tendencies were different, when considering the relative abundance data: the trunk insectivores presented the highest value in the smallest patch while the lowest relative abundance was in the smallest remnant. In the naturally fragmented landscape, time permitted that the loss of some species of trunk insectivores be compensated for the increase in abundance of other species. In contrast, the remnants essentially represented newly formed islands that are not yet at equilibrium and where future species losses would make them similar to the patches.


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 22 ◽  
Author(s):  
Thayná Silva Batista ◽  
Camila Dornellas Estevão ◽  
Débora Caliari de Lima ◽  
Geraldo Majela Moraes Salvio

Abstract Habitat loss and fragmentation are the main causes of biodiversity decline, since changes in environmental and ecological conditions directly affect species richness, abundance, and distribution. This study aimed to identify medium- and large-sized mammals occurring in three Atlantic Forest remnants located in the Barbacena campus of the Federal Institute of Southeast Minas Gerais (IFSudesteMG). The species were recorded in track plots and through active search for direct and indirect signs. 16 species distributed in six orders and 14 families were identified, including some vulnerable and threatened species such as Lycalopex vetulus (meadow fox), Lontra longicaudis (otter), and Callicebus nigrifrons (black-fronted titi monkey). Canis familiaris (domestic dog) and Didelphis sp. (opossum) were the species most frequently observed in the track plots. The largest fragment had the greatest species richness, with 15 species, or 93.75% of the total. The number of species shared among the three sampled areas was 31.2%. The similarities identified between the fragments indicate the need for higher connectivity among them, through the creation of ecological corridors to allow the movement and, consequently, gene flux among the populations, favoring the maintenance of important ecosystem services in the region. Although small, the study area plays a major role in mammal conservation in the region, preserving species from the Cerrado and the Atlantic Forest domains. To reduce potential impacts on the local fauna, management and conservation efforts should be put forward.


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