scholarly journals Reproductive phenological patterns of cerrado plant species at the Pé-de-Gigante Reserve (Santa Rita do Passa Quatro, SP, Brazil): a comparison between the herbaceous and woody floras

2000 ◽  
Vol 60 (1) ◽  
pp. 129-145 ◽  
Author(s):  
M. A. BATALHA ◽  
W. MANTOVANI
Keyword(s):  
Plant Species ◽  
Rainy Season ◽  
Vascular Plant ◽  
Woody Species ◽  
Dry Season ◽  
Natural Vegetation ◽  
Reproductive Stage ◽  
Southeastern Brazil ◽  
Floristic Survey ◽  
Paulo State

A natural vegetation area, with 1269 ha, composed mainly by cerrado, located at Santa Rita do Passa Quatro Municipality, São Paulo State, southeastern Brazil (21°36-39'S, 47°36-38'W), was studied. From September 1995 to February 1997, a floristic survey was carried out, when all vascular plant species at reproductive stage were collected. The flowering and fruiting patterns of the community were studied, comparing the herbaceous and the woody species. In the herbaceous component, 239 species were found and, in the woody one, 108 species. The woody species flowered mainly at the beginning of the rainy season, while the herbaceous ones produced flowers generally at the end of that season. The proportion of anemo and autochorous species was greater in the herbaceous component. The zoochorous ones, on the contrary, were more frequent in the woody component. At the dry season, when their dispersion is more efficient, the proportion of anemo and autochorous species producing fruits was higher. During the rainy season, when their fruits become attractive for longer time, the zoochorous species fruited more intensely.

scholarly journals Floristic composition of the cerrado in the Pé-de-Gigante Reserve (Santa Rita do Passa Quatro, southeastern Brazil)

2001 ◽  
Vol 15 (3) ◽  
pp. 289-304 ◽  
Author(s):  
Marco Antônio Batalha ◽  
Waldir Mantovani
Keyword(s):  
Vascular Plants ◽  
Floristic Composition ◽  
Woody Species ◽  
Sensu Stricto ◽  
Sao Paulo ◽  
Species Level ◽  
Reproductive Stage ◽  
Southeastern Brazil ◽  
Paulo State ◽  
Sørensen Index

We studied a 1225 ha area, composed mainly of cerrado, in Santa Rita do Passa Quatro, São Paulo State, southeastern Brazil (21°36-38'S, 47°36-39'W). In three cerrado physiognomies (campo cerrado -- a wooded savanna, cerrado sensu stricto -- a woodland, and cerradão -- a tall woodland), we collected all vascular plants in reproductive stage, and identified them to species level. We found 360 species, representing 236 genera and 69 families. The richest families were: Asteraceae, Fabaceae, Poaceae, and Rubiaceae. The savanna physiognomies were richer than the forest one. The ratio between herbaceous and woody species was approximately 2:1. We analysed the whole flora and its two components separately, woody and herbaceous, comparing them with other disjunct cerrado areas. We obtained similarity values (Sørensen index) from 0.47 to 0.81, which showed that the 3 diversity of the cerrado was higher in the herbaceous component than in the woody one.

scholarly journals Population biology of Trichomycterus sp. (Siluriformes, Trichomycteridae) in Passa Cinco stream, Corumbataí River sub-basin, São Paulo State, southeastern Brazil

2009 ◽  
Vol 69 (3) ◽  
pp. 925-934 ◽  
Author(s):  
GR. Rondineli ◽  
AL. Carmassi ◽  
FMS. Braga
Keyword(s):  
Rainy Season ◽  
Population Biology ◽  
Stomach Contents ◽  
Sampling Period ◽  
Southeastern Brazil ◽  
Longitudinal Gradient ◽  
Temporal Dimension ◽  
Paulo State ◽  
Males And Females ◽  
Electric Fishing

The aim of this work was to characterise the population of Trichomycterus sp. in Passa Cinco stream, regarding length structure, sex ratio, diet and reproductive aspects, in accordance with drought and rainy season periods and longitudinal gradient, as well as to analyse its corporal condition in a temporal dimension. Six samplings were accomplished with the use of electric fishing equipment in three different sites in Passa Cinco stream, contemplating sites of order two, three and four, during the months of May, July, September and November of 2005; and January and March of 2006. Three hundred and forty one individuals were captured, composed of 203 males, 99 females and 39 immatures. The smallest captured individual, an immature, presented 28 mm of standard length and the largest, a male, 85 mm. There was not significant variation in repletion degree and accumulated fat in the visceral cavity of the individuals analysed during the considered periods. Eleven different food items were found in the stomach contents. Considering the whole sampling period, immature Diptera was a preferential item and other items were found as occasionally ingested. Spearman and Friedman tests did not find significant differences in the diet of Trichomycterus sp. in the periods and sampling sites, respectively. The average of absolute fecundity was of 73 oocytes, and the parceled type of spawning was performed. Both males and females of Trichomycterus sp. presented significant differences in their corporal conditions in the considered periods, and in the rainy season, these fishes were in better condition.

scholarly journals Seasonality of Mansonia titillans during dam construction, Biritiba-Mirim, São Paulo State, Brazil

2013 ◽  
Vol 13 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Frederico Alves D'Avila ◽  
Almério de Castro Gomes
Keyword(s):  
Early Spring ◽  
Dry Season ◽  
Southeastern Brazil ◽  
Rank Test ◽  
Late Winter ◽  
Dam Construction ◽  
Wet Season ◽  
Paulo State ◽  
Significant Difference ◽  
Wilcoxon Rank Test

A two and a half year survey was conducted at a dam in southeastern Brazil. Shannon Traps were used for sampling. Kruskal-Wallis test showed little relation between rainfall and abundance. The data clearly show three abundance peaks, all of them in the end of the dry season, in consonance with the scarce literature existent. Although Kruskal-Wallis Test did not find a clear preference for the dry season, Pairwise Wilcoxon Rank Test revealed a significant difference between Fall and Spring samples. Ma. titillans population had a peak on late winter/early spring, close to the begin of wet season.

scholarly journals Checklist of ferns and lycophytes from the Parque Estadual Turístico do Alto Ribeira, Iporanga, São Paulo, Brazil

Check List ◽  
2015 ◽  
Vol 11 (6) ◽  
pp. 1791 ◽  
Author(s):  
Frederico Fregolente Faracco Mazziero ◽  
Paulo Henrique Labiak ◽  
Mateus Luis Barradas Paciencia
Keyword(s):  
Rain Forest ◽  
Conservation Status ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
Atlantic Rain Forest ◽  
São Paulo ◽  
Floristic Survey ◽  
Paulo State ◽  
São Paulo State ◽  
Ferns And Lycophytes

We present the floristic survey of ferns and lycophytes from the “Parque Estadual Turístico do Alto Ribeira” (PETAR), a remnant of Atlantic Rain Forest of Southeastern Brazil, in São Paulo state. Besides a complete list of species, we also provide information on habit, geographic distribution, and conservation status. Among the 237 taxa, there are 235 species, one variety and one hybrid, distributed in 29 families and 74 genera. Ferns are represented by 223 taxa, whereas the lycophytes were represented by 14. The most representative families are Polypodiaceae (31 spp.), Pteridaceae (29 spp.) and Dryopteridaceae (28 spp.). The most diverse genera are Thelypteris (23 spp.), Asplenium (19 spp.), Elaphoglossum and Blechnum (10 spp. each). Noteworthy is the presence of Ctenitis anniesii, Dicksonia sellowiana, Elaphoglossum iguapense, E. prestonii, E. strictum, Thelypteris concinna, T. araucariensis and T. hatschbachii, all of them considered as endangered species in São Paulo state.

Seasonal Variation in Bee-Plant Interactions in an Inselberg in the Atlantic Forest in Southeastern Brazil

Sociobiology ◽  
2018 ◽  
Vol 65 (4) ◽  
pp. 612 ◽  
Author(s):  
Marcelita França Marques ◽  
Mariana Scaramussa Deprá ◽  
Maria Cristina Gaglianone
Keyword(s):  
Plant Species ◽  
Atlantic Forest ◽  
Temporal Dynamics ◽  
Interaction Network ◽  
Dry Season ◽  
Floral Resources ◽  
Southeastern Brazil ◽  
Plant Interactions ◽  
Wet Season ◽  
Bee Plant

Studies on bee-plant interactions are relevant to the understanding of temporal patterns in neotropical communities. In isolated habitats such as inselbergs little is yet known about the temporal dynamics in the availability of fl oral resources and interacting bee. In the present study, the objective is to verify the eff ect of seasonality on the bee-plant interaction in an Atlantic Forest inselberg in southeastern Brazil. The bees were sampled monthly in the dry (April/2008-September/2008) and wet seasons (October/2008-March/2009) using an entomological net. A total of 322 bees of 33 species were captured on fl owers of 34 species of plants during the year. Bees richness was similar between seasons (22 species in the wet season and 21 in the dry season), but abundance was higher in the wet season (60% of individuals) and higher diversity occurred in the dry season. Augochloropsis sp1 were the most abundant species and visited the largest number of plant species at each season. In the interaction network, plants with the highest degree were distinct between the seasons. The number of possible interactions was higher in the dry season compared to the wet season and connectance was similar; nestedness however varied between the seasons. The composition of plant and bees species was distinct between the seasons, as well as the interactions between them, mainly due to the alteration in the composition of the plant species and the change in the choice of the bees for the floral resources between the seasons.

scholarly journals A SURVEY OF VASCULAR PLANT SPECIES IN THE DRY SEASON, CAM MOUNTAIN, AN GIANG PROVINCE

2018 ◽  
Vol 54 (2A) ◽  
pp. 64
Author(s):  
Nguyen Thi Hai Ly
Keyword(s):  
Plant Species ◽  
Wood Species ◽  
Vascular Plant ◽  
Herbal Medicines ◽  
Dry Season ◽  
H Index ◽  
Average Value ◽  
Wood Fire ◽  
Data Book ◽  
Small Wood

The survey which was conducted in the dry season (from February to April) in Cam Mountain, reported 49 plant species belonged to 45 genera and 29 families. These species include 10 big wood species (G) (20.4 %), 14 small wood species (g) (28.6 %), 7 bush species (17.2 %), 9 creeper species (18.4 %) and 9 herbaceous species (18.4 %). There are 33 species used for herbal medicines, 12 species for wood fire, 11 species for fruit, 10 species for household tools and 9 species for food. Pterocarpus macrocapus Kurz is the species that listed in Viet Nam Red Data Book (2007). The average value of Margalef (d) and Pielou (J’) indexes are 2.45 ± 0.37 and 0.94 ± 0.02, respectively. There are 54.5 % quadrates which (d) and (J’) indexes are higher than Margalef (d) and Pielou (J’) indexes. The Shannon – Weiner (H’) index of 63.6 % quadrats is higher than the average value of Shannon - Weiner index (1.94 ± 0.19). The number of species at quadrats O1T1, O3T1 and O1T2 are more diverse than other quadrats. The transect 1 (T1) to the east is more diverse than the transect 2 to the west of Cam forest.

scholarly journals Hydrogeological, hydrochemical, and natural isotopes evaluation of groundwater and surface water interactions in the alluvial plain, tropical region of southeastern Brazil

2021 ◽  
Author(s):  
Waldilene Correa ◽  
Sueli Pereira ◽  
Joaquim Ernesto Bernardes ◽  
Paulo Ricardo Pereira
Keyword(s):  
Surface Water ◽  
Groundwater Flow ◽  
Rainy Season ◽  
Dry Season ◽  
Alluvial Plain ◽  
Morphological Features ◽  
Southeastern Brazil ◽  
Wet Season ◽  
Natural Isotopes ◽  
Abandoned Meanders

Groundwater-Surface water interactions in alluvial plains facing morphological features are the subject of the study. Considered transitions zones, alluvial plains have different morphological features interfering with groundwater flow and hydrochemistry. The alluvial plain of Mogi Guaçu river (southeastern Brazil) presented topography-controlled groundwater flow, nevertheless, natural levees, wet fields, oxbow lakes, and abandoned meanders can control local flow and interfere in discharges points of the main river. Two sampling water campaigns were done in the dry and wet season for physicochemical and natural isotopes analysis, collecting in total 44 groundwaters samples from monitoring wells and eight water samples from the river, creek, and lake. The groundwaters in wet fields and terraces, and surface waters from creek and lake presented low mineralization (EC from 8 to 37 μS.cm), pH acidic (4.98 to 5.8), and essentially Ca and Na-HCO composition. River waters samples presented pH between 5.92 e 7.69 (acidic in the rainy season and basic in the dry season), and EC from 24.2 and 181.1 μS/cm (lower values in the wet season), Na-HCO and Na-HCO-SO (dry season) and Ca-HCO and Na-HCO (rainy season) compositions. In dry season groundwaters composition showed evolution from sodium mixed (SO – HCO) to bicarbonate waters and higher mineralization; in wet season waters varied from Ca to Na-HCO composition and low mineralization, denoting dilution due to rainwater infiltration. Closer to the river margins, in abandoned meanders and oxbows, the groundwaters have increased values of EC and major ions indicating GW-SW mixtures, and effluent-influent changes (descendent and ascendent flux) in wet and dry seasons, respectively. Natural isotopes in groundwaters imply meteoric origin, without evaporation during recharge and high d-excess can be influenced by continental air masses and Amazonia Basin low-level jet. Shallow water table, permeable silty-sand material of vadose zone, flat terrain, and pristine conditions can contribute to direct infiltration of rainwaters, recharging the shallow aquifer.

scholarly journals Vascular plant species of the Carlos Botelho State Park, state of São Paulo, southeastern Brazil — RETRACTED

Check List ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 074
Author(s):  
Renato A. Ferreira de Lima ◽  
Vinícius Antonio de Oliveira Dittrich ◽  
Vinícius Castro de Souza ◽  
Alexandre Salino ◽  
Tiago Böer Breier ◽  
...  
Keyword(s):  
Plant Species ◽  
Vascular Plant ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Check List ◽  
Vascular Plant Species

Retracted — Check List 6(1): 74-115

Resource partitioning within a browsing guild in a key habitat, the Chobe Riverfront, Botswana

2005 ◽  
Vol 21 (6) ◽  
pp. 641-649 ◽  
Author(s):  
Shimane W. Makhabu
Keyword(s):  
Plant Species ◽  
Resource Use ◽  
Resource Partitioning ◽  
Woody Species ◽  
Food Resources ◽  
Dry Season ◽  
Population Increase ◽  
Species Identity ◽  
Plant Parts ◽  
Elephant Population

Resource partitioning between elephant, giraffe, kudu and impala was assessed. This was to address concerns that elephant population increase adversely affects other species through depleting their food in key areas close to permanent water. Resources considered were woody species browsed, height browsed and plant parts browsed. Animals were observed as they browsed and the plant species, browsing heights and plant parts browsed were recorded. Observations were made over 1 y and the data were divided between wet and dry season. Schoener's index of resource use overlap was calculated for plant species, browsing heights and plant parts eaten and differences in overlap between wet and dry season were tested. Levin's measure of niche breadth in plant species utilized by the different browsers was calculated. Woody species identity was the main separator between food resources that elephant used and those giraffe, impala and kudu used. Giraffe, kudu and impala mainly browsed the same species and plant parts but browsed at different heights. There was no difference in resource use overlap between seasons with different resource availability. Since elephant browsed different woody species from those browsed by the others, it is unlikely that the increasing elephant population will deplete food resources for the other browsers.

A new species of Promenaea (Cymbidieae; Epidendroideae; Orchidaceae) from Southeastern Brazil

Phytotaxa ◽  
2015 ◽  
Vol 203 (2) ◽  
pp. 205 ◽  
Author(s):  
Felipe Fajardo Barberena ◽  
Fábio de Barros
Keyword(s):  
New Species ◽  
Plant Species ◽  
Iucn Red List ◽  
Sao Paulo ◽  
Red List ◽  
Southeastern Brazil ◽  
Endangered Plant ◽  
São Paulo ◽  
Paulo State ◽  
A New Species

During studies toward a new monograph of Promenaea, a new species was discovered in Southeastern Brazil. Promenaea viridiflora is found in the Atlantic Forest, where it is restricted to São Paulo state. The color of the flower, apex of sepals and petals and callus lip are diagnostic characters that distinguish it from P. stapelioides, the morphologically closest species. Nevertheless, Promenaea viridiflora is phylogenetically closer to P. xanthina than P. stapelioides. Although Promenaea viridiflora has been grown successfully in the greenhouse at the Núcleo de Pesquisa Orquidário do Estado in the Instituto de Botânica (IBt—São Paulo, Brazil), it has not been recollected for over 25 years. According to the criteria of the IUCN Red List of endangered plant species, P. viridiflora is assessed as “Critically Endangered”.

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