Effects of past disturbance and edges on tree community structure and dynamics within a fragment of tropical semideciduous forest in south-eastern Brazil over a five-year period (1987–1992)

Plant Ecology ◽  
1997 ◽  
Vol 131 (1) ◽  
pp. 45-66 ◽  
Author(s):  
Ary T. Oliveira-Filho ◽  
José Márcio de Mello ◽  
Ary T. Oliveira-Filho
2001 ◽  
Vol 58 (1) ◽  
pp. 139-158 ◽  
Author(s):  
A. T. OLIVEIRA-FILHO ◽  
N. CURI ◽  
E. A. VILELA ◽  
D. A. CARVALHO

The purpose of the present study was to investigate whether variations in tree community structure and soil properties were interrelated in a fragment of semideciduous forest in Martinho Campos, south-eastern Brazil. The forest was sampled by ten plots, each of which was made up of four contiguous 15×15m quadrats (total 0.9ha). Plots were randomly distributed in the fragment with the help of grid-line coordinates. Soil samples were collected from each quadrat for chemical and textural analyses, and the soil of each quadrat was classified in conformity with the US Soil Taxonomy System. All trees with diameter at the base of the stem ≥5cm were identified and measured (circumference and height). Three soil groups were recognized: Ustifluvent, Ustropept, and Dystropept. A principal component analysis independently discriminated the soil groups in terms of their chemical and textural properties, indicating the consistency of the soil classification. Significant differences among the soil groups were also found for most soil properties. Tree community physiognomy was significantly different in Ustropept soil habitat, where trees showed more pronounced slenderness. A detrended correspondence analysis indicated that tree community structure also responded to the three soil habitats. A canonical correspondence analysis, together with Spearman's rank correlations, demonstrated that species' abundance distributions were significantly correlated with the soil properties. Differences in soil nutrient content (particularly Ca2+ and K+) and in ground water regime are apparently the leading factors determining tree species distributions within the fragment.


Plant Ecology ◽  
2004 ◽  
Vol 174 (1) ◽  
pp. 19-36 ◽  
Author(s):  
Frederico A.G. Guilherme ◽  
Ary T. Oliveira-Filho ◽  
Vivette Appolinário ◽  
Eduardo Bearzoti

2018 ◽  
Vol 30 (4) ◽  
pp. 597-605
Author(s):  
ABM Santos ◽  
WAC Carvalho ◽  
JD Morel ◽  
CR de Souza ◽  
RM dos Santos ◽  
...  

2016 ◽  
Vol 04 (07) ◽  
pp. 132-140 ◽  
Author(s):  
Pablo J. F. Pena Rodrigues ◽  
Leticia R. Melo ◽  
Rodolfo C. R. de Abreu ◽  
Mariana A. Iguatemy

1990 ◽  
Vol 5 ◽  
pp. 13-30 ◽  
Author(s):  
D. A. Springer ◽  
A. I. Miller

The way we view species distribution patterns, particularly at the level commonly referred to as the “community”, has changed over the past 70 years in biology and, subsequently, in paleontology. Because the degree to which species associations can be interpreted as ecological and evolutionary units depends ultimately on recognition and interpretation of faunal spatial variability, we need to understand the nature of this variability at all levels of resolution before we can adequately address questions of “community” structure and dynamics. While it is possible to recognize spatial variability at several levels, from the distributions of individuals within a species to the overall pattern created by the global biota, we must ask whether these patterns really comprise a hierarchy with natural discontinuities (Fig. 1), or whether it is more realistic to view them as a continuous variability spectrum.


2020 ◽  
Vol 10 (7) ◽  
pp. 3392-3401
Author(s):  
Kirstie Hazelwood ◽  
C. E. Timothy Paine ◽  
Fernando H. Cornejo Valverde ◽  
Elizabeth G. Pringle ◽  
Harald Beck ◽  
...  

2008 ◽  
Vol 158 (2) ◽  
pp. 306-308
Author(s):  
MARCELO DA COSTA SOUZA ◽  
MARLI PIRES MORIM

Oryx ◽  
2014 ◽  
Vol 49 (1) ◽  
pp. 60-63 ◽  
Author(s):  
Guilherme Braga Ferreira ◽  
Marcelo Juliano Rabelo Oliveira ◽  
Rogério Cunha de Paula ◽  
Flávio Henrique Guimarães Rodrigues ◽  
Érica Daniele Cunha Carmo

AbstractThe bush dog Speothos venaticus, a rare Near Threatened South American canid that lives in packs, was thought to be extinct in Minas Gerais state, south-eastern Brazil, until recently. Here, we report four recent records of the species in Minas Gerais, the first in the state since the description of the species in 1842. All records are from the Cerrado ecosystem in the north and north-west of the state; two are from animals found dead, one from footprints and another from a camera trap. Three of the records were inside or close (< 10 km) to strict protected areas, in a region recognized as the Protected Areas Mosaic Sertão Veredas–Peruaçu, where we expect any new records of the bush dog to be found. We discuss the low probability of detecting the bush dog and the main regional threats to the species, and emphasize the need to protect large and interconnected natural areas and keep them free of domestic dogs to avoid the extinction of the bush dog in Minas Gerais.


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