Population dynamics of four marsupials and its relation to resource production in the Atlantic forest in southeastern Brazil

Mammalia ◽  
2004 ◽  
Vol 68 (2-3) ◽  
Author(s):  
Rosana Gentile ◽  
Ricardo Finotti ◽  
Vitor Rademaker ◽  
Rui Cerqueira
Keyword(s):  
Population Dynamics ◽  
Atlantic Forest ◽  
Southeastern Brazil ◽  
Population Sizes

Variations in mammal population sizes can be related to the availability and abundance of their resources. This study reports the population dynamics of four didelphid marsupials (

scholarly journals Small mammal populations of an agroecosystem in the Atlantic Forest domain, southeastern Brazil

2007 ◽  
Vol 67 (1) ◽  
pp. 179-186 ◽  
Author(s):  
PS. D’Andrea ◽  
R. Gentile ◽  
LS. Maroja ◽  
FA. Fernandes ◽  
R. Coura ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Species Richness ◽  
Atlantic Forest ◽  
Small Mammal ◽  
Abundant Species ◽  
Common Species ◽  
Southeastern Brazil ◽  
Small Mammal Community ◽  
Population Sizes ◽  
Didelphis Aurita

This study reports 2 years of the population dynamics and reproduction of a small mammal community using the removal method. The study was conducted in a rural area of the Atlantic Forest, in Sumidouro, Rio de Janeiro State, Brazil. The population sizes, age structure and reproduction were studied for the four most common species in the study area. The overall diversity was 1.67 and ranged between 0.8 to 1.67. The species richness was 13 considering the whole study. The most abundant species were the rodents Nectomys squamipes (n = 133), Akodon cursor (n = 74), Oligoryzomys nigripes (n = 25) and the marsupials Didelphis aurita (n = 58) and Philander frenatus (n = 50). Seven other rodents were captured once: Necromys lasiurus, Akodon montensis, Sooretamys angouya, Oecomys catherine, Oxymycterus judex, Euryzygomatomys spinosus and Trinomys iheringi. There were higher peaks for diversity and species richness during the winter (dry) months, probably due to higher food availability. The marsupials had a seasonal reproduction with highest population sizes at the end of the rainy seasons. Nectomys squamipes reproduced mostly during rainy periods. Akodon cursor reproduced predominantly in the winter with the highest population peaks occurring during this season. The analysis of the population dynamics of the rodent species indicated that no species behaved as an agricultural pest, probably due to the heterogeneous landscape of high rotativity of vegetable cultivation. Rodent populations were more susceptible to the removal procedure than marsupial ones.

Population dynamics of the marsupial Micoureus demerarae in small fragments of Atlantic Coastal Forest in Brazil

2001 ◽  
Vol 17 (3) ◽  
pp. 339-352 ◽  
Author(s):  
TIAGO BOSISO QUENTAL ◽  
FERNANDO ANTONIO DOS SANTOS FERNANDEZ ◽  
ANDRÉ TAVARES CORRÊA DIAS ◽  
FLÁVIA SOUZA ROCHA
Keyword(s):  
Population Dynamics ◽  
Reproductive Activity ◽  
Small Population ◽  
Southeastern Brazil ◽  
Coastal Forest ◽  
Short Term ◽  
Atlantic Coastal Forest ◽  
Population Sizes ◽  
Time Required ◽  
Atlantic Coastal

Patterns of population fluctuation, reproductive activity and age structure were studied in populations of the marsupial Micoureus demerarae occupying two small (7.0 and 8.8 ha) fragments of Atlantic Coastal Forest in southeastern Brazil, from 1995 to 1998. Males, but not females, were observed to move between populations. Estimated sizes of the populations in each fragment were very small, usually below 20 individuals. Breeding usually occurred from September to April. Population peaks came mostly by the end of this season, the delay reflecting the time required for the young to become trappable. In August 1997, the area was hit by a fire severely affecting the smaller fragment. Populations were synchronous before the fire, although they became asynchronous after it, possibly in the short term only. Small population sizes, synchrony and presumable male-biased migration are all likely to make the set of populations more vulnerable to extinction than expected for a metapopulation.

Population dynamics of small rodents in a grassland between fragments of Atlantic Forest in southeastern Brazil

2002 ◽  
Vol 67 (5) ◽  
pp. 304-314 ◽  
Author(s):  
Barbara Regina Feliciano ◽  
Fernando Antonio dos Santos Fernandez ◽  
Daniela de Freitas ◽  
Marcos de Souza Lima Figueiredo
Keyword(s):  
Population Dynamics ◽  
Atlantic Forest ◽  
Southeastern Brazil ◽  
Small Rodents

Diversity and Distribution of Lizards in Fragmented Atlantic Forest Landscape in Southeastern Brazil

2014 ◽  
Vol 48 (3) ◽  
pp. 423-429 ◽  
Author(s):  
Mauricio Almeida-Gomes ◽  
Carlos Frederico Duarte Rocha
Keyword(s):  
Atlantic Forest ◽  
Southeastern Brazil ◽  
Forest Landscape

Bird Extinctions in Atlantic Forest Fragments of the Viçosa Region, Southeastern Brazil

2003 ◽  
Vol 17 (6) ◽  
pp. 1827-1839 ◽  
Author(s):  
RÔMULO RIBON ◽  
JOSÉ EDUARDO SIMON ◽  
GERALDO THEODORO DE MATTOS
Keyword(s):  
Atlantic Forest ◽  
Southeastern Brazil ◽  
Forest Fragments

Dipterofauna Associated With Rat Carcasses in the Atlantic Forest, Southeastern Brazil

2017 ◽  
Vol 54 (6) ◽  
pp. 1498-1509 ◽  
Author(s):  
R P Carvalho ◽  
W T A Azevedo ◽  
A L Figueiredo ◽  
C S S Lessa ◽  
V M Aguiar
Keyword(s):  
Atlantic Forest ◽  
Southeastern Brazil

New species of flea-toad, genus Brachycephalus (Anura: Brachycephalidae) from the Atlantic Forest of Espírito Santo, Brazil

Zootaxa ◽  
2021 ◽  
Vol 5068 (4) ◽  
pp. 517-532
Author(s):  
DIEGO ALMEIDA-SILVA ◽  
THIAGO SILVA-SOARES ◽  
MIGUEL TREFAUT RODRIGUES ◽  
VANESSA KRUTH VERDADE
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Protected Area ◽  
The State ◽  
Southeastern Brazil ◽  
Espírito Santo ◽  
The Third ◽  
Skin Smooth ◽  
Espirito Santo ◽  
A New Species

We describe a new species of dull-colored flea-toad, genus Brachycephalus, from the Atlantic Forest of Caparaó mountains in southeastern Brazil. The new species is characterized by its diminutive size, “leptodactyliform” body, brownish color with an inverted V-shaped dark mark on dorsum, skin smooth, hyperossification and dorsal shield absent, linea masculinea absent, Fingers I and IV vestigial, Toe I externally absent, Toe II reduced but functional, Toes III and IV with pointed tips, Toe V vestigial, and ventral color uniformly brown. It is a leaf litter dweller, known only from type locality in the humid forests on the eastern slopes of Parque Nacional do Caparaó mountains, a protected area in the states of Espírito Santo and Minas Gerais, southeastern Brazil. It is the third flea-toad occurring in the state of Espírito Santo recovered as sister to all other Brachycephalus distributed from the state of São Paulo northward in the Atlantic Forest.  

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