Recife, Brazil
Recife, Brazil

Time filter

Source Type

Santo F.S.E.,State University of Feira de Santana | Maciel J.R.,Jardim Botanico do Recife | Filho J.A.S.,Federal University of Vale do São Francisco
Revista Arvore | Year: 2012

The objective of this study was to quantify the impact of herbivory by goats on natural populations of Bromelia laciniosa Mart. ex Schult. f. (Bromeliaceae), an endemic species to the Caatinga biome. Field studies were conducted Caboclo (8°28'56,4''S, 40°56'6,9''W, 588 m alt.), municipality of Afrânio, Pernambuco state. This area is regarded as being highly biologically important and therefore it is a priority area for conservation. The quantitative analysis of this impact was based on the inventory of 10 plots of 2.000 m2, along a pre-existing path in the study area, and consisted in doing the accounting of flowering B. laciniosa individuals and the percentage of individuals which had their flowers foraged by goats. Additionally, we also obtained information on the phenology, floral morphology and fruit and seed set rates of this bromeliad. It was found that out of the 246 individuals surveyed, 65.8% had their flowers foraged by these animals. The estimate of consumed flowers was 8,748 and the likely number of fruit and seeds that thus could not develop were approximately 7,227 fruits and 252,945 seeds. Foraging of inflorescences by goats reduces fruit and seed set rates and it may thus directly interfere with the conservation of this bromeliad.

Maciel J.R.,Jardim Botanico do Recife | Maciel J.R.,Federal University of Pernambuco | Louzada R.,Federal University of Pernambuco
Phytotaxa | Year: 2014

In this paper a new species of Hohenbergia from Bahia, Brazil, H. lativaginata, is described. Compared with 4 other related species and illustrated. © 2014 Magnolia Press.

do Nascimento L.M.,Jardim Botanico do Recife | de Sa Barretto Sampaio E.V.,Federal University of Pernambuco | Rodal M.J.N.,University of Pernambuco | Lins-e-Silva A.C.B.,University of Pernambuco
Journal of Forest Research | Year: 2014

Changes in physiognomy, species composition and structure, and dispersal mechanisms of canopy and subcanopy plant assemblages were investigated along a chronosequence of three ages: 12, 20, and 50+ years old (=old-growth), three replications in each, in an Atlantic Forest landscape in Northeastern Brazil. Our objective was to investigate whether there is floristic and structural convergence along secondary succession. There were significant differences between secondary and old-growth forests in density and basal area only for the subcanopy. Differences in density between forest ages were noted when the assemblage was analyzed per diameter and height classes. Richness of canopy species of both secondary ages differed from those of old-growth forests. Some dominant species in the canopy of secondary forests showed a significant decrease in density with increasing age, which indicates an ongoing process of floristic changes. The low level of shared species between secondary and old-growth forests supports the idea that species composition is one of the last components to recover during successional process. Zoochory was the most important dispersal guild in species percentage and number, irrespective of stand age. Although regenerating areas can take alternative pathways, our results indicate that secondary Atlantic Forest sites have a high potential for natural regeneration. This recovery is recorded as a physiognomic convergence of the canopy layer in as little as 12 years, and progressive introductions of later successional species into the plant assemblage that lead to convergence in terms of the diversity and richness of the subcanopy and of dispersal guilds just 20 years after abandonment. © 2014, The Japanese Forest Society and Springer Japan.

Maciel J.R.,Jardim Botanico Do Recife | Da Silva W.C.,Federal University of Amapá | Costa-E-Silva M.B.,Instituto Agronomico Of Pernambuco
Rodriguesia | Year: 2013

Aiming to contribute to a better knowledge of the richness of grasses occurring in Pernambuco, a study of the genus Chloris Sw in the state was performed. Field work was conduced in that state and herbarium surveys were made. Seven species of the genus Chloris were recorded: C. barbata Sw., C. elata Desv., C. exilis Renv., C. gayana Kunth, C. orthonoton Döll, C. pycnothrix Trin. and C. virgata Sw. The genus present a wide distribution in all phytogeographical zones in Pernambuco. Chloris gayana, C. barbata and C. pycnothrix have been recorded in the literature as potential forage plants.

De Oliveira R.C.,University of Brasilia | De Santana S.H.,University of Brasilia | Da Silva A.S.,University of Brasilia | Maciel J.R.,Jardim Botanico Do Recife | Valls J.F.M.,University of Brasilia
Rodriguesia | Year: 2013

Paspalum L. (Poaceae) has high species richness and economic importance in the Brazilian flora. Given the importance of regional studies to increase taxonomic knowledge of the species and update the flora of Brazil's list, this study aims to describe the genus and species of Paspalum from Rio Grande do Norte, as part of a larger Flora of Rio Grande do Norte project. Collections were made in all the phytogeographic regions of Rio Grande do Norte during the last four years, and a survey was done of the herbaria with representative collections of local flora. The conservation status of the species was evaluated according to IUCN regional categories. We recorded 16 species of Paspalum in Rio Grande do Norte. Paspalum carinatum Humb. & Bonpl. ex Flüggé, P. gardnerianum Nees and P. pumilum Nees are considered vulnerable in Rio Grande do Norte state, due to man-made pressures on the environment where they occur. However, they are not threatened when evaluated on a global scale. Based on an analysis of populations in the field and under cultivation, we propose to synonymize P. pleostachyum Döll under P. ligulare Nees. Contrary to what is found in the literature, the preference for using the name Paspalum crassum Chase over P. tumidum Kuhlm. is justified. This work includes a key for species identification, morphological descriptions, taxonomic and nomenclatural comments, information on distribution and regional-threat criteria, as well as ecological aspects and illustrations of the species. © 1935 JBRJ.

This paper presents the results of a taxonomic study of the family Poaceae held in Parque Nacional Serra de Itabaiana, with the objective of contributing to the knowledge of species richest of the Park. The PARNA Serra de Itabaiana (10 45′15″S and 37 25′15″O) is located in the state of Sergipe and covers an area of 7966 ha which includes three units, the serra do Cajueiro, Comprida and de Itabaiana. Collections were made between April 2006 and April 2008 and deposited in UFP, ASE, MO, and RB. Information on distribution have been raised from herbaria, literature and databases available on the Internet. We identified 40 species in the PARNA classified into 19 genera, the richest of which is Paspalum L., with eight species. Five species had their distribution extended in this work. A key to identify the species is presented, as well as comments on distribution and ecology.

Maciel J.R.,Jardim Botanico do Recife | Maciel J.R.,Federal University of Pernambuco | Louzada R.,Federal University of Pernambuco | Alves M.,Federal University of Pernambuco
Phytotaxa | Year: 2014

Herein is described and illustrated a new Aechmea species. Aechmea nigribracteata grows in southern Bahia (Brazil), a region recognised as highly diverse in bromeliads. Aechmea nigribracteata belongs to Aechmea subg. Chevaliera and has completely dentate, blackish floral bracts and petals with two crenate-laciniate ligules. © 2014 Magnolia Press.

do Nascimento L.M.,Jardim Botanico do Recife | Sampaio E.V.S.B.,Federal University of Pernambuco | Rodal M.J.N.,Federal Rural University of Pernambuco | da Silva S.I.,Federal Rural University of Pernambuco | e Silva A.C.B.L.,Federal Rural University of Pernambuco
Biota Neotropica | Year: 2012

Surveys were undertaken to examine the floristic changes during secondary succession in three areas of 12 and three of 20-year-old secondary forests in Pernambuco State, Brazil. Two hundred and six species were identified, with 136 being found in the 12-year-old secondary forest and 161 species in the 20-year-old forest. Fabaceae and Myrtaceae were the most important families, increasing in species numbers with regeneration age. Of the 216 species, 115 were trees, 48 shrubs, 16 herbaceous plants, and 24 woody lianas, without significant differences between the two regeneration site ages. NMDS analysis revealed a formation of two floristic groups, distinguishing secondary and mature forests, with a further division within secondary forests in accordance with the time since abandonment. Similarity analysis ANOSIM confirmed the significance of the groups, which had floristic composition significant distinct (R=0.96) and 63% of dissimilarity (SIMPER). However, the sharing of 68 arboreal species between the secondary and mature forests suggests a floristic convergence. DCA analysis of the arboreal component as well as the other plant habits suggested that the separation of the subgroups is correlated with physical and chemical variables of the soils. All of these results indicate that, within the chronosequence analyzed, the velocity and direction of the floristic composition during secondary succession was influenced not only by the time of their abandonment, but also by a wide range of environmental variables.

Loading Jardim Botanico Do Recife collaborators
Loading Jardim Botanico Do Recife collaborators