scholarly journals The importance of rediscovering rare and endemic plants: Two species of Pleroma D.Don (Melastomataceae), an update of conservation status, and improved descriptions

Webbia ◽  
2020 ◽  
Vol 75 (2) ◽  
pp. 293-304
Author(s):  
Paulo José Fernandes Guimaraes ◽  
Caio Baez ◽  
Patrícia Rosa ◽  
Gustavo Martinelli ◽  
Diego Nunes Da Silva
Keyword(s):  
Rio De Janeiro ◽  
Conservation Status ◽  
Plant Conservation ◽  
Botanical Garden ◽  
The State ◽  
Current Conservation ◽  
Distribution Maps ◽  
Mountainous Regions ◽  
High Diversity

The remaining portion of Atlantic Forest in the state of Rio de Janeiro constitutes a strategic challenge in the conservation of the biome, by concentrating high richness and endemism of species that are distributed in distinct vegetative fragments covering the mountainous regions. In the state, the genus Pleroma presents a high diversity, currently 45 species, of which 14 are endemic and several of these have knowledge gaps. This paper aims to document rediscoveries in the Três Picos State Park of two species of Pleroma that had not been collected for 69 and 100 years respectively. These discoveries resulted from the actions of the National Center for Plant Conservation, a division of the Rio de Janeiro Botanical Garden. Updated descriptions, geographic information and distribution maps, and cited collections for these two species of Pleroma are presented here together with an assessment of their current conservation status. Based on IUCN criteria, we recommend a classification of Critically Endangered (CR) and Endangered (EN) for Pleroma virgatum and P. elegans, respectively.

Taxonomic Synopsis of the genus Chamaecrista (Leguminosae, Caesalpinioideae) in the Chapada dos Veadeiros region, Goiás, Brazil

Phytotaxa ◽  
2019 ◽  
Vol 427 (3) ◽  
pp. 131-185
Author(s):  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
GWILYM PETER LEWIS ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
National Park ◽  
Conservation Status ◽  
The State ◽  
Identification Key ◽  
Distribution Maps ◽  
Northern Portion ◽  
Herbarium Collections

Chamaecrista is one of the largest genera of Leguminosae subfamily Caesalpinioideae and comprises 330 species, of these, 222 species are present in the Phytogeographic Cerrado Domain in Brazil. The taxonomy of the genus in Brazil continues to need study. Here we present a taxonomic synopsis of Chamaecrista for the Chapada dos Veadeiros (CV) region, which is located in the northern portion of the state of Goiás, Brazil. Fieldwork was carried out in the area between 2010 and 2018; we also reviewed the literature and about 1500 herbarium collections to build the synopsis of species presented here. We record 65 species (71 taxa) of Chamaecrista occurring in the CV, corresponding to 60% of the species registered for the state of Goiás; 49 species at Chapada dos Veadeiros National Park (CVNP), 27 and 19 are endemic to the state of Goiás and the studied area respectively. An identification key and distribution maps, as well as comments on morphology and conservation status are presented, together with photograhs of the species in the field.

The conservation status of rodents in the monsoonal tropics of the Northern Territory

2000 ◽  
Vol 27 (4) ◽  
pp. 421 ◽  
Author(s):  
J. C. Z. Woinarski
Keyword(s):  
Native Species ◽  
Historical Data ◽  
Conservation Status ◽  
Rattus Rattus ◽  
Northern Territory ◽  
Distribution Maps ◽  
Mammal Fauna ◽  
Lack Of Information ◽  
Full Complement

The rodent fauna of the monsoonal tropics of the Northern Territory comprises 23 native species and two introduced species. Three species (Zyzomys maini, Z. palatalis and Pseudomys calabyi) are endemic to the area, and four species (Pseudomys hermannsburgensis, P. desertor, P. johnsoni and Notomys alexis) enter the area only on its southern (arid) fringe. The rodent fauna is closely related to that of the Kimberley, Western Australia. Distribution maps for all species are given. One species (Z. palatalis) has an extremely restricted range and is regarded as critically endangered. The lack of information on the distribution and abundance of rodents in general in this area is evident in the national classification of five of its species (Xeromys myoides, Mesembriomys macrurus, Notomys aquilo, Pseudomys desertor and Pseudomys johnsoni) as Insufficiently Known. The two introduced rodents (Mus domesticus and Rattus rattus) are virtually restricted to urban and highly modified areas, although R. rattus also occurs on one uninhabited island. In contrast to that of much of the rest of Australia, this rodent fauna has apparently retained its full complement of species since European colonisation. This enduring legacy is attributable largely to the relatively limited modification of its environments. However, three species (Mesembriomys macrurus, Rattus tunneyi and Conilurus penicillatus) appear to be declining. The pattern of decline in these species, and in the mammal fauna generally, is obscured by the very limited historical data. However, declines appear most pronounced in the cattle country of the Victoria River District and Gulf regions. Priorities for the management of this rodent fauna include survey of poorly known areas, survey for poorly known species, monitoring of rodent communities, and landscape-wide management of the three pervasive processes with probably greatest impacts – fire, grazing and feral predators.

scholarly journals The remnants of restinga habitats in the brazilian Atlantic Forest of Rio de Janeiro state, Brazil: habitat loss and risk of disappearance

2007 ◽  
Vol 67 (2) ◽  
pp. 263-273 ◽  
Author(s):  
CFD. Rocha ◽  
HG. Bergallo ◽  
M. Van Sluys ◽  
MAS. Alves ◽  
CE. Jamel
Keyword(s):  
Habitat Loss ◽  
Rio De Janeiro ◽  
Conservation Status ◽  
Legal Protection ◽  
Field Work ◽  
The State ◽  
Conservation Units ◽  
Landsat 7 ◽  
Extensive Degradation ◽  
Janeiro State

"Restingas" (herbaceous/shrubby coastal sand-dune habitats) used to cover most of Rio de Janeiro State coast, and have suffered extensive degradation over the last five centuries. Using satellite images and field work, we identified the remaining restingas in the State, recording the factors that might cause their degradation. We used two mosaics of Landsat 7 scenes (spatial resolution 15 and 30 m) to map and evaluate preliminarly the remaining areas and conservation status. Each remnant area was checked in the field, degraded areas within it were mapped and subtracted from the remnants. We identified 21 restinga remnants totalling 105,285 ha. The largest and smallest restinga remnants were Jurubatiba (25,141 ha) and Itaipu (23 ha), respectively. We identified 14 causes of degradation. The most important were vegetation removal for housing developments, establishment of exotic plant species, change of original substrate, and selective removal of species of economic importance for the horticultural industry. All restingas had disturbed parts under strong pressure due to human activities. Due to intense habitat loss, and occurrence of endemic/threatened vertebrate species in restinga habitats, we strongly indicate the implementation of new conservation units to protect these fragile remnants. This habitat is steadily decreasing and most remnants lack legal protection. Therefore, under the current human pressure most of this unique habitat is likely to be lost from the State within the next few years.

Two new species of Eugenia (Myrtaceae) from the Cabo Frio Center of Plant Diversity, Rio de Janeiro, Brazil

Phytotaxa ◽  
2015 ◽  
Vol 208 (3) ◽  
pp. 201
Author(s):  
JAIR EUSTÁQUIO QUINTINO DE FARIA ◽  
FIORELLA FERNANDA MAZINE ◽  
CAROLYN ELINORE BARNES PROENÇA
Keyword(s):  
New Species ◽  
Plant Diversity ◽  
Rio De Janeiro ◽  
Conservation Status ◽  
Marginal Vein ◽  
Closely Related Species ◽  
Distribution Maps ◽  
Narrow Endemic ◽  
Two New Species ◽  
Cabo Frio

Two apparently narrow-endemic species of Eugenia are described from the Cabo Frio Center of Plant Diversity in the state of Rio de Janeiro, Brazil. Both present a limited distribution restricted to coastal areas north of Rio de Janeiro. The new species are described and compared with closely related species.  Illustrations, distribution maps and conservation status assessments are also provided. Eugenia gastropogena and Eugenia farneyi are presumably closely related to Eugenia pyriformis and Eugenia malacantha. Eugenia gastropogena can be recognized by its leaves with arched secondary veins not forming a clear marginal vein, subcordate to obtuse leaf bases, petioles 2.1–4.8 mm long, buds 3.5–4 mm long and 2 ovules per locule. E. farneyi can be recognized by having leaves with straight secondary veins that form a single marginal vein running 0.7–1.5 mm from the margin, cuneate leaf bases, petioles 4–6.4 mm long, buds 6.2–8.4 mm long, and 10–12 ovules per locule.

Five new southeastern Brazilian Myrtaceae

Phytotaxa ◽  
2016 ◽  
Vol 253 (1) ◽  
pp. 57 ◽  
Author(s):  
MARCOS SOBRAL ◽  
FIORELLA F. MAZINE ◽  
LÚCIO LEONI ◽  
MARCELO C. SOUZA ◽  
EUGÊNIO A.D. MELO
Keyword(s):  
Related Species ◽  
Rio De Janeiro ◽  
Conservation Status ◽  
Minas Gerais ◽  
The State ◽  
Espírito Santo ◽  
Espirito Santo

We describe, illustrate and compare with related species the southeastern Brazilian Calyptranthes arachnicola, C. biconvexa, C. carangola, Eugenia grandissima and Plinia longa. Calyptranthes arachnicola, from the state of Rio de Janeiro, is apparently related to Calyptranthes ursina, differing by its larger blades and pendulous inflorescences; Calyptranthes biconvexa, also from Rio de Janeiro, is apparently related to C. lanceolata, being distinguished by its blades with adaxially biconvex midvein and shorter inflorescences; Calyptranthes carangola, from the state of Minas Gerais, is apparently close to C. curta, differing by its narrower blades, longer inflorescences and narrower bracts; Eugenia grandissima, also from Minas Gerais, is apparently close to E. umbrosa, but has larger leaves and petioles, blades with midvein adaxially raised and larger bracteoles; and Plinia longa, from the state of Espírito Santo, is related to Plinia edulis, differing by its narrowly oblong leaves. Additionally, species are evaluated for their conservation status according to the information available.

scholarly journals Amphibians of the Reserva Ecológica Michelin: a high diversity site in the lowland Atlantic Forest of southern Bahia, Brazil

ZooKeys ◽  
2018 ◽  
Vol 753 ◽  
pp. 1-21 ◽  
Author(s):  
Caio Vinícius de Mira-Mendes ◽  
Danilo Silva Ruas ◽  
Renan Manoel de Oliveira ◽  
Indira Maria Castro ◽  
Iuri Ribeiro Dias ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Threatened Species ◽  
Sampling Period ◽  
Red List ◽  
The State ◽  
Mountainous Regions ◽  
Southern Bahia ◽  
Lowland Forests ◽  
Data Deficient ◽  
High Diversity

An inventory of the amphibians of the Reserva Ecológica Michelin – REM in southern Bahia, Brazil is presented. Sixty-nine species were recorded during a ten-year sampling period. Amphibians were distributed in two orders (Gymnophiona and Anura), belonging to twelve families [Aromobatidae (1), Bufonidae (3), Centrolenidae (1), Craugastoridae (5), Eleutherodactylidae (3), Hemiphractidae (2), Hylidae (34), Phyllomedusidae (5) Leptodactylidae (7), Microhylidae (4), Odontophrynidae (3) and Caeciliidae (1)]. Fifty per cent of the reproductive modes known for Atlantic forest anurans were recorded. While no threatened species were found at REM, six species are classified as data deficient (DD) by the Brazilian Red List of threatened species and deserve additional attention.PhasmahylatimboandVitreoranaeurygnataare listed as endangered in Bahia according to the list of threatened species of the state. Despite a higher diversity of amphibians in the Atlantic forest having been reported for mountainous regions, our results revealed that amphibian richness for lowland forests is also high.

scholarly journals New records and conservation of Passiflora L. (Passifloraceae s.s.) in Rio de Janeiro, Brazil

2021 ◽  
Vol 16 (1) ◽  
pp. 115-128
Author(s):  
Michaele Alvim Milward-de-Azevedo ◽  
Natália Brandão Gonçalves Fernandes
Keyword(s):  
Rio De Janeiro ◽  
New Records ◽  
Conservation Status ◽  
Sensu Stricto ◽  
Distribution Data ◽  
Distribution Maps ◽  
Area Of Occupancy ◽  
The Family ◽  
First Time ◽  
Janeiro State

Passiflora L. belongs to the family Passifloraceaesensu stricto, and comprises 700–750 species. There are approximately 161 known species of the family in Brazil, of which 153 belong to Passiflora, 89 are endemic, 83 occur in the region of the Atlantic Domain; 40 occur in Rio de Janeiro State (RJ). Using field samplings techniques and scientific collection analyses, we present here new geographic records for Passiflora deidamioides Harms, P. imbeana Sacco, P. junqueirae Imig & Cervi, and P. truncata Regel for RJ, principally in the Serra dos Órgãos National Park (PARNASO). Geographic distribution data was used to calculate the Extension of Occurrence (EOO) and Area of Occupancy (AOO) of the species. Passiflora junqueirae, previously considered endemic to Espírito Santo State, now has new records for RJ. Passiflora imbeana and P. truncata are extended into RJ, being recorded there for the first time in the municipality of Teresópolis. The four species are cited for the first time in PARNASO, occurring between 1,000 and 1,700 m.a.s.l. in Montane and Upper Montane Atlantic Rainforest. We provide taxonomic information, distribution maps, and the conservation status of the species.

A taxonomic reassessment of Croton grandivelus, including recognition of a new species, C. insignis, and the redefinition of C. fulvus (Euphorbiaceae)

Phytotaxa ◽  
2020 ◽  
Vol 472 (3) ◽  
pp. 207-239
Author(s):  
RODOLFO CARNEIRO SODRÉ ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
South America ◽  
Leaf Anatomy ◽  
Conservation Status ◽  
Sensu Stricto ◽  
Environmental Preferences ◽  
Distribution Maps ◽  
New Synonyms ◽  
A New Species ◽  
High Diversity

Croton is one of the largest genera of Angiosperms, with a pantropical distribution and a high diversity in South America, where 500 of its species occur. Croton sect. Adenophylli, its largest section, is characterized mainly by the fruit columella with three terminal ascending and inflated appendices and is distributed across the Neotropics, with the Cerrado as one of its centers of diversity. One of the binomials in the section, Croton grandivelus, has been applied to a broadly circumscribed entity that is here treated as including three species, C. grandivelus sensu stricto, C. fulvus and C. insignis, the latter described as a new species. We present a taxonomic treatment for these three species with descriptions, photographs, an illustration for the new species, an identification key, distribution maps, and commentary on the taxonomy, geographical distribution, environmental preferences, conservation status, flowering and fruiting times, morphological relationships and notes about the leaf anatomy and micromorphology of foliar trichomes. As part of this process, we propose 23 new synonyms and 15 lectotypifications.

Five new species and one new combination in Brazilian Myrtaceae

Phytotaxa ◽  
2017 ◽  
Vol 307 (4) ◽  
pp. 233 ◽  
Author(s):  
MARCOS SOBRAL ◽  
IDIMÁ G. COSTA ◽  
MARCELO C. SOUZA ◽  
JOÃO PAULO F. ZORZANELLI
Keyword(s):  
New Species ◽  
Rio De Janeiro ◽  
Conservation Status ◽  
Minas Gerais ◽  
The State ◽  
New Combination ◽  
Espírito Santo ◽  
Espirito Santo

Eugenia asema, E. trichogyna, Myrcia altomontana, M. fria and M. macucana are described and illustrated, and the new combination Eugenia subglomerata, based on Myrtus subglomerata, is proposed. Eugenia asema, from the state of Rio de Janeiro, seems related to E. subavenia, but has glabrous shining blades and smaller flowers; E. trichogyna, also from Rio de Janeiro, is apparently close to E. pluriflora, but has wider blades and pilose flowers with unequal pairs of calyx lobes; Myrcia altomontana, from Espírito Santo, is related to M. neocambessedeana, but differs by its denser indumentum and shorter inflorescences; M. fria, also from Espírito Santo, is apparently related to Calyptranthes pauciflora but has glabrous flowers and larger inflorescences, and M. macucana, from the state of Minas Gerais, is apparently close to Calyptranthes anceps, from which it is distinguished by its markedly shorter inflorescences. Additionally, conservation status is assessed for the species described here.

scholarly journals Diversity, community structure and conservation status of an Atlantic Forest fragment in Rio de Janeiro State, Brazil

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
Vinicius Costa Cysneiros ◽  
Joaquim de Oliveira Mendonça-Junior ◽  
Tatiana Dias Gaui ◽  
Denise Monte Braz
Keyword(s):  
Community Structure ◽  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Diversity Index ◽  
Conservation Status ◽  
The State ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Importance Value ◽  
Forest Remnant

The State of Rio de Janeiro still holds unknown portions of the Atlantic Forest, which represent gaps in the knowledge of this ecosystem. Paracambi and neighbor municipal districts comprise a vast stretch of virtually unknown forest that makes up part of the Serra do Mar biodiversity corridor. The following study describes the tree community structure in a stretch of the ombrophilous Atlantic Forest, in the Parque Natural Municipal do Curió (Curio MNP), Paracambi, Rio de Janeiro, which serves as the basis to evaluate species diversity and conservation status. The altitudes in the area ranges from 100 to 690 m and the climate varies from mild subtropical to tropical hot and humid. Forty plots (10x10m) were randomly placed along the area, where all the stems equal to or greater than five centimeters (5 cm) diameter at breast high from ground level were measured. A total of 749 individuals, pertaining to 128 genera and 210 species were recorded, eight of which are listed as threatened of extinction in the Brazilian flora. The Shannon-Weaver diversity index (H′) was 4.7 nat.ind.-1 and the species with greater importance value was Pseudopiptadenia contorta (1.6460 m2; 18 individuals) while the most common species wereSenefeldera vertcilata (48) and Actinostemon verticilatus (47 individuals). Despite the sample area being a little smaller than that commonly adopted in tropical studies, data pointed to a richness hitherto not registered in any other study for the State of Rio de Janeiro, no matter the inclusion criteria used, and also confirmed by the two estimator indices used, which have revealed very similar results. The vertical forest structure, the values associated to the successional stage of the species and other aspects of community structure indicate that the Curio MNP encompasses forest stretches in advanced stages of ecological succession. Besides its key location for the connectivity of forest fragments in the region, the results emphasize the ecological importance of this forest remnant and the need for its conservation.

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