Samir G. Rolim

Este livro é apresentado em 5 capítulos, onde no primeiro se faz uma breve revisão sobre sistemas silviculturais com espécies nativas. No segundo, apresenta modelos biométricos para altura, volume e biomassa em plantios silviculturais, com base na cubagem de 168 árvores plantadas. No terceiro, apresenta modelos de crescimento em diâmetro para 35 es...

Questions Are vegetation recovery trajectories converging or diverging during succession following clear-cutting? Are the trajectories approaching the species composition of surrounding old-growth forests? Location Atlantic forest, Vale Natural Reserve, Linhares, southeast Brazil. Methods A forest management experiment was established in an old-g...

There are a number of controversies surrounding both biomass estimation and carbon balance in tropical forests. Here we use long-term (from 1978 through 2000) data from five 0.5-ha permanent sample plots (PSPs) within a large tract of relatively undisturbed Atlantic moist forest in southeastern Brazil to quantify the biomass increment (ΔM I), and c...

Cocoa agroforests like the cabrucas of Brazil's Atlantic forest are among the agro-ecosystems with greatest potential for biodiversity conservation. Despite a global trend for their intensification, cocoa agroforests are also being abandoned for socioeconomic reasons especially on marginal sites, because they are incorporated in public or private p...

Cocoa (Theobroma cacao) is cultivated in the states of Bahia and Esprito Santo in eastern Brazil under the so-called cabruca system, where the understorey of native Atlantic forest is cleared and the canopy is thinned out to provide adequate shading for the cocoa trees. Apart from its economic and social role, the cabruca system is said to be impor...

The emergence of alternative stable states in forest systems has significant implications for the functioning and structure of the terrestrial biosphere, yet empirical evidence remains scarce. Here, we combine global forest biodiversity observations and simulations to test for alternative stable states in the presence of evergreen and deciduous for...

The density of wood is a key indicator of trees’ carbon investment strategies, impacting productivity and carbon storage. Despite its importance, the global variation in wood density and its environmental controls remain poorly understood, preventing accurate predictions of global forest carbon stocks. Here, we analyze information from 1.1 million...

Aim To determine the relationships between the functional trait composition of forest communities and environmental gradients across scales and biomes and the role of species relative abundances in these relationships. Location Global. Time period Recent. Major taxa studied Trees. Methods We integrated species abundance records from worldw...

The expansion of forest plantations to supply the wood market requires selection of genotypes that can provide high gains, which may compromise long-term tree breeding programs. With the final purpose of producing quality sawn wood, the aims of this study were to: (a) estimate genetic parameters for a progeny/provenance test of Plathymenia foliolos...

Forests are a substantial terrestrial carbon sink, but anthropogenic changes in land use and climate have considerably reduced the scale of this system¹. Remote-sensing estimates to quantify carbon losses from global forests2–5 are characterized by considerable uncertainty and we lack a comprehensive ground-sourced evaluation to benchmark these est...

Understanding what controls global leaf type variation in trees is crucial for comprehending their role in terrestrial ecosystems, including carbon, water and nutrient dynamics. Yet our understanding of the factors influencing forest leaf types remains incomplete, leaving us uncertain about the global proportions of needle-leaved, broadleaved, ever...

Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies3,4. Here, leveraging global tree databases5-7, we explore how the phy...

1. Biodiversity is an important component of natural ecosystems, with higher species richness often correlating with an increase in ecosystem productivity. Yet, this relationship varies substantially across environments, typically becoming less pronounced at high levels of species richness. However, species richness alone cannot reflect all importa...

The efects of mining-induced changes on natural environments extend from terrestrial to aquatic ecosystems. Our study aimed to investigate how mining activities afect the functional beta diversity of Ephemeroptera nymphs and select species with specifc traits. We tested whether: (a) preserved streams have higher functional beta diversity of Ephemer...

The way species respond to environmental changes depends on several factors, but mainly on their niche breadth in the face of habitat variability and changes. Our study evaluated, over a six-year period, how the abundance and richness of generalist and specialist genera of Ephemeroptera, Plecoptera and Trichoptera (EPT) respond to mining activities...

The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we...

The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer‐reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non‐invasive method of surveying vertebrates, applicable to different scales of time and...

The Amazon forest has the highest biodiversity on Earth. However, information on Amazonian vertebrate diversity is still deficient and scattered across the published, peer-reviewed, and gray literature and in unpublished raw data. Camera traps are an effective non-invasive method of surveying vertebrates, applicable to different scales of time and...

One of the most fundamental questions in ecology is how many species inhabit the Earth. However, due to massive logistical and financial challenges and taxonomic difficulties connected to the species concept definition, the global numbers of species, including those of important and well-studied life forms such as trees, still remain largely unknow...

Significance Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates of tree diversity at large geographic domains still rely heavily on published lists of species descriptions that are geographically uneven in coverage. These limitations have precluded efforts to generate a g...

Ruellia anamariae é um arbusto de flores creme de até 5m de altura (Figura 1, 2), que era até o momento considerada endêmica do estado do Pará e conhecida para apenas duas populações disjuntas, platôs da Floresta Nacional de Carajás e na Serra das Andorinhas. Contudo, a publicação da espécie avaliou um conjunto restrito de registros disponíveis no...

Daphnopsis filipedunculata é uma arvoreta de até 8 m de altura, endêmica da Floresta Nacional de Carajás e descrita como restrita às florestas de transição dos platôs da Serra Norte. A espécie foi descrita em 1993, a partir de uma única coleta, realizada em 1982 na área do antigo acampamento hoje Mina de N4, que continha apenas flores masculinas. I...

Our study evaluated the effects of environmental variables on the assemblages of the suborder Zygoptera, and tested the hypothesis that environmental variables are more important determinants of the structure of these assemblages than limnological variables in streams. We sampled 17 streams in the Carajás National Forest and tested our hypothesis u...

O Livro apresenta os resultados de 8 anos de inventário faunístico (peixes, anfíbios, répteis, aves e mamíferos) no entorno da Estrada de Ferro Carajás, nos estados Pará e Maranhão, Amazônia Oriental, Brasil.

Mining operations can cause environmental alterations that have a major impact on aquatic organisms. In the present study, we analyzed the effects of mining operations on the environmental heterogeneity of streams in the eastern Brazilian Amazon, and the beta diversity (and components) of the local communities of the order Ephemeroptera. We tested...

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In...

The Atlantic forest of Brazil is a biodiversity hotspot that retains less than 12% of its original area. In this biome, non-pioneer tree species with limited dispersal are the most impacted by recent habitat loss and fragmentation. As attempts to establish non-pioneer tree species in pastures and agricultural fields in the Atlantic forest have fail...

In the present study, we analyzed a unique phytophysiognomy in the Amazon region, which is formed by savanna-like vegetation on iron-rich soil (known locally as canga) located within an iron-ore mining region. We used the habitat template theory to test the hypothesis that changes in the physical-chemical properties of streams and the physical stru...

There is just little information about the technological aspects of the wood of Brazilian native tree species, which limits their suitable use. The objective of this study was to evaluate the resistograph amplitudes of the wood from six native tree species in different wood density classes, and correlate them with their wood densities to demonstrat...

This working paper assesses gaps in the current state of research knowledge and defines priorities for promoting silviculture with native Brazilian species.

1. AN OVERVIEW OF SILVICULTURAL SYSTEMS WITH NATIVE SPECIES IN THE ATLANTIC FOREST OF BRAZIL 2. BIOMETRIC MODELS FOR MIXED-SPECIES PLANTATION IN THE NORTH OF ESPIRITO SANTO, BRAZIL 3. DIAMETER GROWTH MODELS FOR 35 ATLANTIC FOREST TREE SPECIES IN SILVICULTURAL TRIALS IN THE NORTH OF ESPIRITO SANTO, BRAZIL 4. EVALUATION OF THE WOOD QUALITY OF PLANTED...

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...

2019, The Author(s), under exclusive licence to Springer Nature Limited. In this Letter, the middle initial of author G. J. Nabuurs was omitted, and he should have been associated with an additional affiliation: ‘Forest Ecology and Forest Management Group, Wageningen University and Research, Wageningen, The Netherlands’ (now added as affiliation 18...

Human impacts can affect the soil properties through erosion and leaching, the ecosystem functions and, consequently, the capacity of a forest to regenerate. Here, we determine the effects of forest disturbance and succession on selected soil chemical properties using two different approaches, before‐after‐control‐impact ( BACI ) and space‐for‐time...

A spatially explicit global map of tree symbioses with nitrogen-fixing bacteria and mycorrhizal fungi reveals that climate variables are the primary drivers of the distribution of different types of symbiosis.

Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across...

Aim Large tropical trees form the interface between ground and airborne observations, offering a unique opportunity to capture forest properties remotely and to investigate their variations on broad scales. However, despite rapid development of metrics to characterize the forest canopy from remotely sensed data, a gap remains between aerial and fie...

Aim: Large tropical trees form the interface between ground and airborne observations, offering a unique opportunity to capture forest properties remotely and to investigate their variations on broad scales. However, despite rapid development of metrics to characterize the forest canopy from remotely sensed data, a gap remains between aerial and fi...

Symbiotic nitrogen fixation (SNF) makes atmospheric nitrogen biologically available and regulates carbon storage in many terrestrial ecosystems. Despite its global importance, estimates of SNF rates are highly uncertain, particularly in tropical forests where rates are assumed to be high. Here we provide a framework for evaluating the uncertainty o...

Aim: Large tropical trees form the interface between ground and airborne observations, offering a unique opportunity to capture forest properties remotely and to investigate their variations on broad scales. However, despite rapid development of metrics to characterize the forest canopy from remotely sensed data, a gap remains between aerial and fi...

Neste trabalho os dados de 168 árvores de plantios silviculturais com espécies nativas no norte do Espírito Santo foram utilizadas para a elaboração de modelos que descrevem a relação H-D, o volume de madeira comercial e a biomassa acima do solo das árvores individuais. (PDF) Silvicultura e Tecnologia de Espécies da Mata Atlântica: https://www.re...

Natural populations of Oryza glumaepatula, a wild relative of cultivated rice, were found in lakes at mountaintops of the Carajás Ridge, in Carajás National Forest. This species is generally found in aquatic environments of lowlands surrounded by tropical forests, and this is a rare case in which the species colonized high altitude lakes, situated...

Significance Identifying and explaining regional differences in tropical forest dynamics, structure, diversity, and composition are critical for anticipating region-specific responses to global environmental change. Floristic classifications are of fundamental importance for these efforts. Here we provide a global tropical forest classification tha...

Resumo Apresentamos uma revisão das visões controversas acerca da classificação fisionômica da Floresta de Linhares, aqui definida como a floresta sobre tabuleiros costeiros que ocorre entre os rios Doce e Barra Seca, no norte do Espírito Santo. Compilamos informações sobre o clima estacional dessa região e analisamos a inter-relação das variações...

Cocoa agroforests like the cabrucas of Brazil's Atlantic forest are among the agro-ecosystems with greatest potential for biodiversity conservation. Despite a global trend for their intensification, cocoa agroforests are also being abandoned for socioeconomic reasons especially on marginal sites, because they are incorporated in public or private p...

A generic regression model for above-ground biomass of forest stands was constructed based on published data (R 2 = 0.88, RSE = 32.8 t/ha). The model was used 1) to verify two allometric regression models of trees from Scandinavia applied to repeated measurements of 275 sample plots from database of Estonian Network of Forest Research (FGN) in Esto...

Há tempos sabemos que a condição ambiental da Mata Atlântica é delicada e, portanto, faz-se necessá-rio propor ações que contribuam para a preservação desse bioma. O reconhecimento prático da maturida-de fisiológica (maturação) e a investigação dos proces-sos de dormência de sementes têm grande importância porque são conhecimentos básicos para as p...

In this study, seedling growth and herbivory were monitored during the first 4 years of plot development in a large-scale reforestation experiment in Brazil’s Atlantic Rainforest (Mata Atlˆantica). Seedlings were planted in a factorial design testing two levels of density, three levels of diversity, and the presence or absence of pioneer species at...

A viabilidade do uso da técnica de semeadura direta para restauração de ecossistemas degradados tem crescido nos últimos anos desde os estudos pioneiros de Pompéia et al. (1989) e Barbosa et al. (1992). Alguns estudos estimam que o custo de implantação com esta técnica pode ser em média 40% menor que o plantio convencional de mudas, podendo variar...

The tree and palm flora was studied in the Atlantic forest of the rio Doce alluvial floodplain, in a 20,000 ha area, between Linhares (Espírito Santo State) and the Atlantic Ocean. The floristic survey recorded 408 species and 59 families. Floristic composition was compared to other forests of São Paulo, Minas Gerais, Bahia and Rio de Janeiro state...

Medidas precisas de volume de madeira são ferramentas importantes no planejamento do uso do recurso florestal. Neste estudo, foram investigados modelos volumétricos para a Floresta Nacional do Tapirapé-Aquirí, na Serra dos Carajás (PA), baseados numa cubagem rigorosa de 55 árvores para obter o diâmetro, altura comercial do fuste e volume sólido. Um...

Temporal and spatial changes in floristic composition over a 15‐year period in an Atlantic tropical forest in Brazil were analyzed. The data were recorded in five 0.5‐ha (50 × 100 m) plots within a 22,000‐ha forest reserve. In each plot, all stems ± 10 cm diameter at breast height (DBH) were repeatedly inventoried. The overall number of species amo...

A mortalidade e o recrutamento de árvores com DAP > 10 cm foram analisados em 5 parcelas de 0,5 ha, através de 6 levantamentos consecutivos, realizados a cada 3 anos (1980 a 1995) na Floresta Atlântica em Linhares (ES). Um período seco mais severo que ocorreu de maio a agosto de 1987 afetou sensivelmente a estrutura da floresta. No período abrangid...

RESUMO: Três aspectos da estrutura de comunidades arbóreas tropicais, riqueza, diversidade e a relação espécie-abundância através da distribuição lognormal, foram analisados em diferentes intensidades amostrais (1 ha, 2 ha, 4 ha, 8 ha, 16 ha, 32 ha e 40 ha) na Reserva Florestal de Linhares (ES). Os resultados revelaram que estes três aspectos mostr...