Population structure, fecundity and ecological aspects of freshwater shrimp species (Decapoda, Palaemonidae) of an urban forest fragment in central Amazonia, Brazil

Crustaceana ◽  
2012 ◽  
Vol 85 (10) ◽  
pp. 1205-1219 ◽  
Author(s):  
Marcelo Menin ◽  
Luany O. de Almeida ◽  
Tomaz L. Gualberto
Keyword(s):  
Population Structure ◽  
Urban Forest ◽  
Forest Fragment ◽  
Freshwater Shrimp ◽  
Shrimp Species ◽  
Ecological Aspects ◽  
Central Amazonia

scholarly journals Distribution of frogs in riparian areas of an urban forest fragment in Central Amazonia

2011 ◽  
Vol 11 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Bruno Minoru Tsuji-Nishikido ◽  
Marcelo Menin
Keyword(s):  
Leaf Litter ◽  
Environmental Variables ◽  
Urban Forest ◽  
Forest Edge ◽  
Forest Fragment ◽  
Riparian Areas ◽  
Central Amazonia ◽  
Edge Distance ◽  
Frog Species ◽  
Stream Size

This study aimed to evaluate how environmental variables (width of valley, stream size, forest edge distance, and leaf-litter depth) affect the abundance and richness of species of frog species in riparian areas of an urban forest fragment in Central Amazonia. The study was conducted at the campus of the Universidade Federal do Amazonas, Manaus, Brazil, between May 2008 and April 2009, when three nocturnal and diurnal samples were taken from ten plots. A total of 17 species belonging to seven families were registered. The number of species recorded per plot varied from seven to 14. We detected a relationship between the edge distance and richness: the plots with lower richness were located near the fragment border. The variables had no significant effect on abundance of each species.

scholarly journals Effect of environmental parameters on squamate reptiles in an urban forest fragment in central Amazonia

2020 ◽  
Vol 50 (3) ◽  
pp. 239-245
Author(s):  
Thais ALMEIDA-CORRÊA ◽  
Luciana FRAZÃO ◽  
Diogo Magalhães COSTA ◽  
Marcelo MENIN ◽  
Igor Luis KAEFER
Keyword(s):  
Species Richness ◽  
Urban Forest ◽  
Structural Parameters ◽  
Environmental Parameters ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Tropical Biodiversity ◽  
Central Amazonia ◽  
Regional Species Pool ◽  
Species Richness And Abundance

ABSTRACT The increasing urbanization of the Amazonian biome has promoted the creation of several forest fragments surrounded by an urban matrix, but the relationship of animal assemblages to the urban environment, especially in forest fragments, is poorly known. Here we aimed to 1) determine the composition of the squamate fauna of the largest urban forest fragment from central Amazonia, in the Brazilian city of Manaus, and 2) evaluate the influence of environmental parameters on assemblage diversity. We sampled 10 standardized riparian plots through visual search in six surveys between 2008/09 and 2015, totaling 360 observer-hours. We found 15 species of lacertoids (lizards and amphisbaenians) and seven species of snakes through active search. After considering occasional encounters and search in museum collections, we recorded a total of 24 lacertoid and 22 snake species. Multiple regression models indicated that species richness and abundance of individuals increased with the distance from the edge of the fragment, while other structural parameters of the environment did not affect the assemblage. We conclude that this forest fragment 1) consists of a subset of the regional species pool, and 2) undergoes reduction of species richness and abundance of individuals from the center to the borders. This and additional urban forest fragments should be continually monitored in order to evaluate their long-term role in maintaining the tropical biodiversity.

scholarly journals Use of space by neotropical marsupial Didelphis albiventris (Didelphimorphia: Didelphidae) in an urban forest fragment

2008 ◽  
Vol 25 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Alex J. de Almeida ◽  
Camila G. Torquetti ◽  
Sônia A. Talamoni
Keyword(s):  
Population Structure ◽  
Sexual Dimorphism ◽  
Home Range ◽  
Habitat Use ◽  
Urban Forest ◽  
Conservation Status ◽  
Forest Fragment ◽  
Mean Size ◽  
The Mean ◽  
Didelphis Albiventris

A population of the Neotropical marsupial Didelphis albiventris (Lund, 1840) living in an urban forest fragment was studied. Population structure and the influence of sex and age on two variables related to habitat use (Daily home range - MCP and Habitat use intensity - UI) obtained by the spool-and-line technique were analysed. There were 20 males and 29 females studied (N = 49). No sexual dimorphism was apparent in adult individuals. There were 16 males and 24 females tracked using the spool-and-line device. There were significant differences found in the mean size of the daily home range, which was greater in adults than in sub-adults. Regarding the habitat use intensity there were also significant differences related to age. There were no significant differences in MCP and UI related to the sex of the individuals. Besides the analyzed factors, the variables related to habitat use are possibly influenced by other factors, especially, the ones related to the conservation status of the fragment.

scholarly journals Structure and regeneration capacity of a urban forest fragment

2013 ◽  
Vol 35 (2) ◽  
pp. 203-209
Author(s):  
Débora Cristina Souza ◽  
Arielle Vanessa Barbosa Alves ◽  
Luciana Oliveira Tolomeotti ◽  
Jilvan Ribeiro da Silva ◽  
Janaina de Melo Franco
Keyword(s):  
Urban Forest ◽  
Regeneration Capacity ◽  
Forest Fragment

A new species of Stenomicra Coquillett (Diptera: Periscelididae) from the Brazilian Amazon and its life history

Zootaxa ◽  
2018 ◽  
Vol 4407 (4) ◽  
pp. 591
Author(s):  
ELIANE SOLAR GOMES ◽  
ROSALY ALE-ROCHA ◽  
RUTH LEILA FERREIRA KEPPLER
Keyword(s):  
Life History ◽  
New Species ◽  
Urban Forest ◽  
Brazilian Amazon ◽  
Neotropical Region ◽  
Biological Information ◽  
Forest Fragment ◽  
Male And Female ◽  
The City ◽  
A New Species

A new species of Stenomicra is described for the Neotropical Region, from phytotelmata of Araceae at an urban forest fragment in the city of Manaus, state of Amazonas, Brazil. Morphological descriptions of the immatures and the adults (male and female) are provided, together with biological information on the life cycle of the species and its “host” plant. 

ESTRUTURA, DIVERSIDADE E HETEROGENEIDADE DO ESTRATO REGENERANTE EM UM FRAGMENTO FLORESTAL URBANO APÓS 10 ANOS DE SUCESSÃO FLORESTAL

FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 535 ◽  
Author(s):  
Raphaela Vilela Eiras e Paiva ◽  
José Hugo Campos Ribeiro ◽  
Fabricio Alvim Carvalho
Keyword(s):  
Multivariate Analysis ◽  
Species Diversity ◽  
Urban Forest ◽  
Shannon Index ◽  
Forest Fragments ◽  
Ecological Groups ◽  
Small Fragment ◽  
Forest Fragment ◽  
Semideciduous Forest ◽  
Dalbergia Nigra

Este estudo visou avaliar a composição florística, a fitossociologia e a diversidade de espécies do estrato regenerante arbóreo de um pequeno fragmento (0,5 ha) de Floresta Estacional Semidecidual, após 10 anos de abandono, no perímetro urbano do município de Juiz de Fora, MG, Brasil. Os indivíduos da regeneração arbórea (altura ≥ 1 m e DAP < 5 cm) foram amostrados em 25 parcelas aleatórias de 5 x 5 m. Foram amostrados 1224 indivíduos pertencentes a 40 espécies. Houve uma forte predominância (> 90%) de espécies de estágios sucessionais iniciais (pioneiras e secundárias iniciais). Como reflexo da forte dominância ecológica observada, exercida principalmente pela elevada densidade das espécies Dalbergia nigra e Siparuna guianensis, o valor do índice de diversidade de espécies de Shannon (H’ = 2,38) foi muito inferior aos valores encontrados para fragmentos florestais maduros. Mesmo sendo um fragmento pequeno, isolado e em estágio inicial de sucessão secundária, análises multivariadas (agrupamento e DCA) evidenciaram a formação de grupos florísticos e uma forte diferenciação no arranjo das espécies, evidenciando a heterogeneidade típica de florestas tropicais. Embora apresente uma baixa diversidade, esse fragmento urbano tem funções ecológicas e sociais importantes para a região, que carece de áreas verdes para a conservação da flora nativa.AbstractStructure, diversity and heterogeneity of regeneration stratum in an urban forest fragment after 10 years of forest succession. This research aimed to evaluate the floristic composition, phytosociology and species diversity of the regenerating woody stratum of a small fragment (0.5 ha) of Semideciduous Forest, after 10 years of abandonment, in the municipality of Juiz de Fora, MG, Brazil. All woody individuals (height ≥ 1 m dbh <5 cm) were sampled at 25 random plots of 5 x 5 m. We sampled 1224 individuals belonging to 40 species. There was a strong predominance (> 90%) of species of early successional stages (pioneer and early secondary). Reflecting the strong observed ecological dominance, exercised primarily by the high density of the species Dalbergia nigra and Siparuna guianensis, species diversity value (Shannon index H '= 2.38) was much lower than the values found for mature forest fragments in this region. Although a small fragment, isolated and in early stages of secondary succession, the multivariate analysis (cluster and DCA) revealed the formation of distinct floristic groups and a strong differentiation in the arrangement of the species, showing the tropical forests typical heterogeneity. Although it has a low diversity, this urban fragment has ecological and social importance to the region, that present lack of green areas to conserve the native flora.Keywords:  Phytosociology; multivariate analysis; gradient analysis; ecological groups.

scholarly journals Floral preferences of a neotropical stingless bee, Melipona quadrifasciata Lepeletier (Apidae: Meliponina) in an urban forest fragment

2006 ◽  
Vol 66 (2a) ◽  
pp. 463-471 ◽  
Author(s):  
Y. Antonini ◽  
R. G. Costa ◽  
R. P. Martins
Keyword(s):  
Plant Species ◽  
Urban Forest ◽  
Flowering Plant ◽  
Forest Fragment ◽  
High Similarity ◽  
Paulo State ◽  
Melipona Quadrifasciata ◽  
Belo Horizonte ◽  
Flowering Plant Species ◽  
Bee Abundance

Species of plants used by Melipona quadrifasciata Lepeletier for pollen and nectar gathering in an urban forest fragment were recorded in Belo Horizonte, Minas Gerais, Brazil. Melipona quadrifasciata visited 22 out of 103 flowering plant species. The plant species belonged mainly to Myrtaceae, Asteraceae, and Convolvulaceae (64% of the visits). Melipona quadrifasciata tended to collect pollen or nectar each time, except for Myrtaceae species, from which both pollen and nectar were collected. Bee abundance at flowers did not significantly correlate to food availability (expressed by flowering plant richness). We found a relatively high similarity (50%) between plant species used by M. quadrifasciata, which was also found in studies carried out in São Paulo State. However, low similarity (17%) was found between the results of this study and those of another done in Bahia State, Brazil.

Pouteria kossmanniae (Sapotaceae): a new species from Central Amazonia, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 447 (4) ◽  
pp. 265-275
Author(s):  
CAROLINE C. VASCONCELOS ◽  
MARISABEL U. ADRIANZÉN ◽  
JOSÉ LUÍS C. CAMARGO ◽  
MÁRIO H. TERRA-ARAUJO
Keyword(s):  
New Species ◽  
Near Infrared ◽  
Urban Forest ◽  
Conservation Status ◽  
Similar Species ◽  
Forest Fragments ◽  
Terra Firme ◽  
Central Amazonia ◽  
Pouteria Macrophylla ◽  
A New Species

Pouteria kossmanniae (Sapotaceae, Chrysophylloideae), a new species from Central Amazonia, is here described. It is known from the Manaus region, Amazonas, Brazil, and is found in non-flooded upland forests, known as terra firme. Illustrations are provided in addition to geographic distribution, with a comparison of the morphological and spectral (near-infrared) differences between P. kossmanniae and its very similar species Pouteria macrophylla, Pouteria manaosensis, and Pouteria rodriguesiana. The species is naturally common in some urban forest fragments, but since only a low number of subpopulations is known, we assign P. kossmanniae the preliminary conservation status of “Endangered”.

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