Seed dispersal and spatial distribution of Attalea geraensis (Arecaceae) in two remnants of Cerrado in Southeastern Brazil

The effects of an explicit three dimensional (3D) urban canopy representation on the development of convective thunderstorms were analyzed with the tropical town energy budget (tTEB) scheme integrated into the advanced regional prediction system (ARPS). The study provides a detailed description of the procedure to couple the system ARPS-tTEB and analyzed the simulation results of the 12 January 2015 sea-breeze event that developed a severe thunderstorm above the metropolitan area of São Paulo (MASP), Brazil. The simulation used realistic boundary and initial conditions from the Global Forecast System (GFS) and sea surface temperature (SST) from the Tropical Rainfall Measurement Mission (TRMM). The system ARPS-tTEB runs of up to 3 km horizontal resolution were carried out with high resolution topography features and land-use types currently available for Southeastern Brazil. The simulated spatial distribution of precipitation was verified against the Climate Prediction Center Morphing Technique (CMORPH), the Global Precipitation Measurement (GPM) and the São Paulo weather radar (SPWR) precipitation estimates by indexes scores. Time series of grid precipitation estimates (ARPS-tTEB and SPWR) and point measurements (rain gauges) were evaluated with a Bayesian statistical method. Results indicate that the urban area of the MASP modulates the precipitation spatial distribution over it. Furthermore, phase and amplitude precipitation accuracy increased with the 3D urban canyon and the urban energy budget scheme in relationship to control runs without urban environment effects.

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Spatial distribution of Robson 10‐group classification system and poverty in southern and southeastern Brazil

International Journal of Gynecology & Obstetrics ◽

10.1002/ijgo.12831 ◽

2019 ◽

Vol 146 (1) ◽

pp. 88-94

Author(s):

Marisa A.A. Brunherotti ◽

Marli F. Prado ◽

Edson Z. Martinez

Keyword(s):

Spatial Distribution ◽

Classification System ◽

Group Classification ◽

Southeastern Brazil

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Crustaceans composition in sandy beaches of Sepetiba Bay, Rio de Janeiro, Brazil

Check List ◽

10.15560/11024 ◽

2011 ◽

Vol 7 (6) ◽

pp. 778 ◽

Cited By ~ 3

Author(s):

Ricardo S. Cardoso ◽

Felipe Meireis ◽

Gustavo Mattos

Keyword(s):

Spatial Distribution ◽

Rio De Janeiro ◽

Sandy Beaches ◽

Southeastern Brazil ◽

Sepetiba Bay ◽

Main Species ◽

Janeiro State ◽

Made In

A crustacean survey was made in Sepetiba bay, Rio de Janeiro state, southeastern Brazil. Twelve sandy beaches were sampled on five islands in this embayment. A total of 3024 individuals were collected, belonging to 21 species, which are grouped in 16 families, seven infraorders, seven suborders, and four orders. Isopods, followed by amphipods and tanaids, showed the highest abundance, amounting to over 92% of the dominance of crustaceans. The main species were Excirolana armata, Excirolana braziliensis (isopods), Atlantorchestoidea brasiliensis (amphipod), and Monokalliapseudes schubarti (tanaid), which together accounted about 80% of crustaceans of the beaches studied. Excirolana braziliensis had the highest frequency. The majority of species found are typical of sandy beaches, with large spatial distribution.

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Seed dispersal, spatial distribution and population structure of Brazilnut trees (Bertholletia excelsa) in southeastern Amazonia

Journal of Tropical Ecology ◽

10.1017/s0266467400010749 ◽

1997 ◽

Vol 13 (4) ◽

pp. 595-616 ◽

Cited By ~ 106

Author(s):

Carlos A. Peres ◽

Claudia Baider

Keyword(s):

Spatial Distribution ◽

Seed Dispersal ◽

Average Distance ◽

Climatic Conditions ◽

Long Distance ◽

Neotropical Forests ◽

Bertholletia Excelsa ◽

Entire Study ◽

Natural Stands ◽

Seed Shadows

ABSTRACTSeeds of the Brazilnut tree (Bertholletia excelsa Humb. & Bonpl., Lecythidaceae) sustain one of the most important extractive industries in neotropical forests. Yet little is known about the demography and seed dispersal ecology of Bertholletia, particularly in natural stands which have not been previously harvested. This study presents data on the population density, spatial distribution, and seed dispersal ecology of Brazilnut trees at a pristine stand located within the Kayapó Indian Area of southeastern Amazonia, Pará, Brazil. Brazilnut trees were primarily found within groves (castanhais) of 75 to 149 trees, with a few isolated trees in between. Although the density of trees ≥ 10 cm in diameter at breast height (hereafter, dbh) at two groves was 4.8 to 5.1 trees ha–1, the overall density for the entire study area of c. 950 ha was estimated at 1.3 tree ha–1. Within-grove nearest neighbour distances averaged 21 m and were markedly skewed towards even shorter distances. Seed dispersal experiments using 709 marked seeds indicated that this pattern can be largely explained by the highly restricted seed shadows imparted by the main seed dispersal agents of Bertholletia at this site, the red-rumped agouti (Dasyprocta leporina). Agoutis on average scatterhoard Bertholletia seeds to an average distance of 5 m, and rarely beyond 20 m, from seed stations. We suggest that, once edaphic and climatic conditions are suitable, the highly contagious spatial distribution of Bertholletia trees at the landscape level can be largely accounted for by the quantitatively dominant effect of short-distance dispersal by caviomorph rodents, and rare events of long-distance dispersal provided by other vectors. This mechanism of grove formation need not resort to untested conjectures of human dispersal and intentional planting in prehistoric and historic times as it has often been suggested in the literature.

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Spatial distribution of Lolium rigidum seedlings following seed dispersal by combine harvesters

Weed Research ◽

10.1111/j.1365-3180.2004.00412.x ◽

2004 ◽

Vol 44 (5) ◽

pp. 375-387 ◽

Cited By ~ 51

Author(s):

J M Blanco-Moreno ◽

L Chamorro ◽

R M Masalles ◽

J Recasens ◽

F X Sans

Keyword(s):

Spatial Distribution ◽

Seed Dispersal ◽

Lolium Rigidum ◽

Combine Harvesters

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Spatial distribution of buffy-tufted-ear (Callithrix aurita) and invasive marmosets (Callithrixspp.) in a tropical rainforest reserve in southeastern Brazil

American Journal of Primatology ◽

10.1002/ajp.22718 ◽

2017 ◽

Vol 79 (12) ◽

pp. e22718 ◽

Cited By ~ 2

Author(s):

Nathalia Detogne ◽

Átilla C. Ferreguetti ◽

José Henrique F. Mello ◽

Marcelo C. Santana ◽

Aline da Conceição Dias ◽

...

Keyword(s):

Spatial Distribution ◽

Tropical Rainforest ◽

Southeastern Brazil ◽

Callithrix Aurita

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THE ROLE OF ANTS IN SEED DISPERSAL OF GLOBBA LANCANGENSIS AND THE SPATIAL DISTRIBUTION OF ITS SEEDLINGS

Chinese Journal of Plant Ecology ◽

10.17521/cjpe.2004.0031 ◽

2004 ◽

Vol 28 (2) ◽

pp. 210-217

Author(s):

CHEN Fan ◽

CHEN Jin ◽

LIU Zhi-Qiu ◽

ZHANG Ling ◽

LIU Yong ◽

...

Keyword(s):

Spatial Distribution ◽

Seed Dispersal

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Description and ecology of a new species of the cricket genus Endecous (Orthoptera: Grylloidea: Phalangopsidae) in the speleological province of Arcos-Pains-Doresópolis, Southeastern Brazil

Zootaxa ◽

10.11646/zootaxa.4821.2.4 ◽

2020 ◽

Vol 4821 (2) ◽

pp. 305-332

Author(s):

RODRIGO ANTÔNIO CASTRO-SOUZA ◽

VITOR GABRIEL PEREIRA JUNTA ◽

RODRIGO LOPES FERREIRA

Keyword(s):

Spatial Distribution ◽

New Species ◽

Species Abundance ◽

Bilateral Symmetry ◽

Environmental Stability ◽

Southeastern Brazil ◽

Mining Activities ◽

Key Factors ◽

Horizontal Projection ◽

A New Species

A new cricket species of the genus Endecous Saussure, 1878 is described in the present work found in the speleological province of Arcos-Pains-Doresópolis, which belongs to the limestone group Bambuí, Brazil. Moreover, the spatial distribution of the new species was related to the species Eidmanacris sp., which co-occurs with the former in several caves. Relationships between species abundance and horizontal projection, number of entrances and environmental stability of the caves where these species coexist were evaluated. The presence of bilateral symmetry in individuals of Endecous painensis n. sp. perhaps due to environmental stress caused by mining activities surrounding the cave was also tested. Endecous crickets are commonly observed in the caves, for which the preference by distinct microhabitats and generalist strategies may be key factors explaining colonization and segregation in relation to other cricket species in subterranean habitats. The generalist lifestyle of the here described species may attenuate the effects environmental stresses over development.

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