Ecossistemas florestais são importantes no processo de estocagem carbono da atmosfera. Áreas reflorestamentos podem contribuir maneira substancial nesse e diminuir a pressão extrativista sobre florestas nativas. Este trabalho objetivou avaliar biomassa acima do solo viva (por meio método não-destrutivo – equações alométricas) morta (serapilheira) o estoque nesses compartimentos em áreas reflorestamento com diferentes idades (3, 5 7 anos) área Floresta Ombrófila Densa (testemunha),...

ABSTRACT Information on the recovering of areas gravel extraction Caatinga biome are scarce. Thus, objective this work was to assess soil fauna as bioindicator quality, evaluating with addition topsoil (WAT) and control (CWT) without used for forest plantations, which were implemented areas. A native (NFC) taken a reference. Ten traps three replicates installed in each area, evaluated randomized block design split-plot arrangement at end rainy season different years, 0, 1, 3 6 years after...

The stage of natural forest regeneration may influence soil fauna. This study aimed to test the hypothesis that there are differences in structure and composition fauna communities between areas undergoing less advanced (LAS) more (MAS) stages Seasonal Semideciduous Forest at Pinheiral, RJ. Soil was sampled using pitfall traps, during dry rainy seasons. Total abundance, abundance saprophagous/predator group, mainly Formicidae, relative participation Orthoptera were higher MAS, while Acari,...

Internal retranslocation is an important mechanism for nutrient conservation in plants, which depends on different factors. However, there are little data about this subject, especially tropical forest species. This study aimed to evaluate the macronutrient dynamic and influence of ecological (P: pioneer x NP: non-pioneer) phenological (ND: non-deciduous D: semideciduous / deciduous) characteristics content leaves five tree species monospecific plantations Brazilian Amazon: Acacia mangium...

Forest plantations may minimize the effects of deforestation in Amazon. However, there are differences among species terms their influences on soil recovery. The monospecific Acacia mangium, Dipteryx odorata, Jacaranda copaia, Parkia decussata,and Swietenia macrophylla, and areas pasture native forest chemical attributes Brazilian Amazon were evaluated. One bulked sample was collected per plot (0.00-0.05, 0.05-0.10, 0.10-0.30 m; three plots 128 m2) each area. No significant most observed...

The soil fauna can be used as a bioindicator of quality and ecosystem functioning. present study aimed to assess the effect Atlantic Forest secondary succession on structure composition community in Itaboraí, Rio de Janeiro. We selected five areas along gradient forest succession: pasture (PA) four fragments (FF1, FF2, FF3, FF4), which are toposequence. Thus, we divided upper, middle lower thirds delimitated transect (20 m) each third. In dry season 2010, metalic square (0.25 m x 0.25 was...

A revegetação de áreas desmatadas Mata Atlântica pode ser realizada com mudas espécies florestais nativas inoculadas fungos micorrízicos arbusculares (FMA). Este trabalho objetivou avaliar o efeito diferentes substratos, na ausência/presença inoculação FMA, sobre crescimento e conteúdo nutricional Colubrina glandulosa Perkins. As foram produzidas em tubetes casa vegetação. O delineamento experimental foi inteiramente casualizado, 12 repetições/tratamento oito tratamentos: T1 (20% esterco...

ABSTRACT Planting of forest species timber interest helps to reduce the deforestation pressure on Amazon forest, promotes sustainable development producing region and generates ecological benefits. The objective this work was evaluate survival rate growth four native (Swietenia macrophylla, Parkia decussata, Dipteryx odorata Jacaranda copaia) one exotic (Acacia mangium) in monospecific plantations (spacing 2 x m) established areas previously used for grazing, Itacoatiara, State Amazonas,...

Experimentos de manipulação podem contribuir para a compreensão do papel ecológico da serapilheira em ecossistemas florestais. No entanto, há poucos estudos desta natureza. Os efeitos remoção camada (RS) foram avaliados sobre comunidade artrópodes solo dois plantios abandonados Corymbia citriodora, diferentes estágios regeneração natural espécies nativas Mata Atlântica. Armadilhas queda instaladas aleatoriamente 5 parcelas (5 x 20 m) RS e controle (CT), no plantio com 19 anos idade (P19:...

The present study was carried out to evaluate the ecological complexity of community edaphic invertebrates in two flooded forest fragments (FF), restinga Marambaia, RJ. Formicidae predominant group, and there not any preference by groups for compartments soil/litter.FF 1, with lesser degree soil saturation, pre sented higher diversity, while FF 2, highest presented greater density individuals richness groups. Some fauna that are only collected disturbed environments were Marambaia, ...

Inoculation with arbuscular mycorrhizal fungi (AMF) is a strategy to improve the efficiency of forest plantations, reducing costs and increasing survival plant species. The objective this study was assess response dependency seedlings species Apuleia leiocarpa (Vogel) J.F. Macbr inoculation AMF. experiment conducted in completely randomized design using 5 × factorial arrangement six replications. treatments consisted combinations five P rates (0, 24, 71, 213, 650 mg kg-1) types inoculations...

The vegetation may modifies the structure and composition of community edaphic arthropods. This study aimed to compare arthropods in four areas abandoned pasture (AP1, AP2, AP3, AP4) secondary native forest fragments a successional gradient (FF1, FF2, FF3, FF4), Itaboraí, Rio de Janeiro, Brazil. are positioned on hillside sampling was conducted transects outlined toposequence (upper, middle lower sections), where pitfall traps were installed dry season. organisms identified taxonomic groups...

Este estudo objetivou avaliar a influência do relevo sobre os artrópodes edáficos em um plantio de Eucalyptus urophylla. Coletou-se camada serapilheira e solo (0 – 5 cm) circunscritos gabarito metálico (25 x 25 lançado aleatoriamente (N = 10) três seções topográficas (TS, TM TI: terços superior, médio inferior, respectivamente) nas estações chuvosa seca 2003. Formicidae foi o grupo taxonômico predominante, independentemente da seção topográfica. A análise componentes principais...

Analog agroforestry system uses native tree species to improve soil conditions and the microclimate of degraded areas. This study aimed assess impact analog on physical, chemical, biological attributes. We tested hypothesis that some these attributes can be used as indicators quality improvement compared a managed pasture area. Two experimental sites were selected, an site site. In October 2016 (end dry season), samples collected from 0–5 5–10 cm depths fauna community was sampled using...

Avaliou-se a influência de dois tipos substrato (S1 e S2), na ausência presença inoculação fungos micorrízicos arbusculares (FMA), produção mudas Schinus terebinthifolius em tubetes 280 mL. O experimento foi realizado casa vegetação do Departamento Solos Instituto Agronomia, Universidade Federal Rural Rio Janeiro, Seropédica, RJ, no período junho setembro 2005. S1 S2 se constituíram numa mistura (em volume), previamente desinfestada, fosfato rocha (10%), areia grossa lavada (30%), material...

This study aimed to test the effects of fertilization with organic compost from industrial production pulp on litterfall and nutrient input monospecific plantations in a loan area. The treatments consisted three doses D10, D15 D20 (10, 15 20 Mg ha-1, respectively), mineral conventional (DAM) no (D0) land plots (N = 4/treatment/species; x 12 m). Litterfall was monthly collected by two traps (0.72 m2/plot) sorted out into leaves, twigs, seeds, flowers, fruits others. We determined nitrogen,...

A ciclagem de nutrientes é influenciada pelo estágio sucessional. Contudo, existem divergências quanto ao padrão desta dinâmica. No presente estudo, objetivou-se avaliar os atributos químicos do solo superficial e da serapilheira produzida em dois plantios abandonados eucalipto Corymbia citriodora diferentes estágios sucessão secundária espécies nativas Mata Atlântica (PJ: plantio jovem; PM: maduro), na Reserva Biológica União, Rio Janeiro. Testou-se a hipótese que ocorre o incremento...

ABSTRACT Several tropical woody species are highly responsive to arbuscular mycorrhizal fungi (AMF) and depend on their symbiosis for nutrition successful establishment in the field. The objective of this study was evaluate response Schinus terebinthifolius, a native Brazilian Atlantic Forest Caatinga, inoculation with three AMF (Dentiscutata heterogama, Gigaspora margarita, Rhizophagus clarus), either individually or mixed, at different levels phosphorus fertilization (0, 71, 213, 650 mg...

ABSTRACT This study quantified the aboveground biomass and nutrient contents in terrestrial bromeliads a dune forest at Restinga da Marambaia, RJ. Data of individuals “quadrats” (4 m2) marked on line perpendicular to sea were collected August 2001. Diameter (d) height (h) variables that best correlated with Quesnelia quesneliana, which presented highest concentrations K. The total number leaves was variable Billbergia amoena Neoregelia cruenta. N. cruenta N P. Nutrient higher Q. quesneliana.

Restingas are extremely degraded, tropical sandy ecosystems and poorly studied in terms of nutrient cycling. The present study aimed to evaluate litter dynamics a forest dune at Restinga da Marambaia, RJ. Litterfall was collected monthly using two parallel transects installed 200 m apart from each other with 15 traps (0.25 m2), over consecutive years. litterfall sorted into leaves, twigs, flowers, fruits, refuse. Litter decomposition evaluated by the ratio between layer on soil surface,...