scholarly journals Subtribe Laeliinae (Orchidaceae) in a large and mature remnant of Brazilian Atlantic Forest

Rodriguésia ◽  
2021 ◽  
Vol 72 ◽  
Author(s):  
Felipe Fajardo Villela Antolin Barberena ◽  
José Fernando Andrade Baumgratz ◽  
Fábio de Barros

Abstract Orchidaceae is a megadiverse botanical family in Brazil, particularly in the Atlantic Forest where it is a priority group for conservation. Parque Nacional do Itatiaia (PARNA Itatiaia) was the first conservation unit established in Brazil, and represents a large and mature remnant of Atlantic Forest. Updated data on richness, distribution and conservation of the Neotropical and ornamental subtribe Laeliinae in the park recently disclosed the occurrence of presumed locally extinct species, but without a taxonomic approach. Thus, we present a comprehensive taxonomic treatment of Laeliinae in the PARNA Itatiaia. The subtribe is represented by six genera and 33 species, which corresponds to about 15% of the orchid flora of PARNA Itatiaia. Epidendrum is the richest genus, with 20 species, followed by Cattleya (6 spp.) and Prosthechea (4 spp.). Species of Laeliinae grow in shady and humid habitats, especially near rivers, at elevations ranging 750-1,200 m, with species richness decreasing with elevation. Several species form small populations (commonly < 10 individuals), which are in need of prompt conservation actions to avoid local extinction. Samples of Laeliinae from PARNA Itatiaia in collections of consulted herbaria were found to be scarce. Variable morphological characteristics, mainly of the lip, distinguishe species of Laeliinae.

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.


2019 ◽  
Vol 26 (2) ◽  
pp. 196-208 ◽  
Author(s):  
Jessie P. Santos ◽  
Thadeu Sobral‐Souza ◽  
Keith S. Brown ◽  
Maurício Humberto Vancine ◽  
Milton C. Ribeiro ◽  
...  

Phytotaxa ◽  
2016 ◽  
Vol 284 (3) ◽  
pp. 225 ◽  
Author(s):  
FELIPE FAJARDO V. A. BARBERENA ◽  
DIEGO RAFAEL GONZAGA

A new epiphytic species of Epidendrum from the Brazilian Atlantic Forest is described and illustrated. Epidendrum campos-portoi grows in Upper-Montane Ombrophilous Forest in the Parque Nacional do Itatiaia, southeastern Brazil. The new species differs from E. subpurum, the morphologically closest species, mainly in the thinner, cylindrical stem, not thickened, inflorescence in a raceme, and green flowers.


2019 ◽  
Vol 14 (4) ◽  
pp. 439-457 ◽  
Author(s):  
Karin Regina Seger ◽  
Mirco Solé ◽  
Romari A. Martinez ◽  
Alexandre Schiavetti

This study aimed to identify ethnozoological knowledge about amphibians of people living around a protected area, the Wildlife Refuge of Una (REVIS), located in the Atlantic Forest, in southern Bahia, Brazil. Semi-structured interviews were performed on a random sample of residents right outside the REVIS limits. Photos of several amphibians that live in the REVIS were also shown for recognition of the regional species. We analysed the use value (VU) of each species, calculating the ratio between the number of times that each species was mentioned and the total number of interviews. Biophilic relationships, using Kellert´s (1993) classification, were inferred from their statements. We interviewed 40 individuals (22 males and 18 females) with ages between 10 and 82 years. There was a gender-related bias regarding the recognised species (Chi Sq = 0.013, p &lt; 0.05) with men having more knowledge than women. The Butter Frog, Leptodactylus latrans, had the highest VU of 0.73 and was the most mentioned overall, but especially amongst women. The most mentioned species amongst men was Burmeister’s Frog (Phyllomedusa burmeisteri). We identified 18 biophilic comments, classified as moralistic, symbolic, negativistic or utilitarian. It was possible to note that, in this community, the knowledge and use of amphibians is not deep, purely cognitive and without any direct utilitarian purpose (medicine or cooking, for example). This study can build a bridge between traditional anurofauna knowledge of the Una region and modern environmental education, by demystifying existing information and incorporating it in local conservation actions, becoming especially relevant in rural areas, such as this protected area.


2019 ◽  
Vol 11 (9) ◽  
pp. 154
Author(s):  
Marília Isabelle Oliveira da Silva ◽  
Luiz Carlos Marangon ◽  
Ana Lícia Patriota Feliciano ◽  
Marilia Alves Grugiki

The evaluation of the forest restoration scenario is of great importance, with floristic composition and diversity being among the most used ecological variables as indicators. This research aimed to identify the current situation, in terms of species composition and diversity, of two riparian forests under restoration based on a reference ecosystem, the Brazilian Atlantic Forest. Twenty permanent plots (250 m&sup2;) were located in areas under restoration process (AR1 and AR2) and in a forest fragment of the region which served as a reference ecosystem (ER). We sampled, identified and classified all tree individuals with CBH &ge; 15.0 cm in each plot. Aiming to understand species richness and diversity, besides the traditional indexes (Shannon and Simpson), we also estimated the effective numbers of Hill&rsquo;s diversity (qD = 0, 1 and 2) considering rarefaction (P &le; 0.05); and to detect floristic similarities among the study areas we performed a Principal Coordinate Analysis (PCoA). We found dissimilarity among ARs and ER, and the presence of exotic species, indicating that, as recommended, such reference should have been taken into account during the planning of the restoration action. Considering the effective numbers of species (qD) we found differences between the areas, species richness and diversity was higher in ER &gt; AR2 &gt; AR1. We also show that among the restoration areas, with the same age and submitted to the same conditions, AR2 has features that allow us to conclude that this area has a bigger chance of success in the restoration process. However, aiming environmental sustainability, we suggest that some corrective actions should be taken in order to favour the reestablishment of ecological processes in these areas.


2020 ◽  
Vol 68 (1) ◽  
Author(s):  
Libia Mayerly Cifuentes-Garcia ◽  
Pedro Manuel Villa ◽  
Denilson Fernandes Peralta ◽  
Pedro Bond Schwartsburd

Introduction: Local environmental filters have shown the influence on the bryophyte diversity and structure communities, but there are limited studies that analyze how biotic relationships filters influence these communities. Objective: To evaluate whether the influence of fern Asplenium auritum cover determine changes in species richness and composition of bryophyte communities, in a semideciduous remnant forest, Minas Gerais, Brazil. Methods: We selected one transect of 300 m in each of six areas where Asplenium auritum was present. In all transect we estimated plant cover in 39 10 × 10 cm plots randomly distributed. We compare the estimated species richness and composition of bryophyte between fern coverage levels. Results: We found 60 species in 35 genera and 23 families. Weft and mat were the most represented life-forms. Fern cover had no significant effect on bryophyte species richness and composition. Conclusions: Bryophyte cover appears to improve fern development and promote the coexistence of several bryophyte species. Bryophyte cover probably predicts variations in species richness and drives the species assemblage in this community.


Biotropica ◽  
2014 ◽  
Vol 46 (4) ◽  
pp. 441-450 ◽  
Author(s):  
Eliana M. Cancello ◽  
Rogério R. Silva ◽  
Alexandre Vasconcellos ◽  
Yana T. Reis ◽  
Luís M. Oliveira

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