ATRIBUTOS EDAFOAMBIENTAIS E PARÂMETROS DENDROMÉTRICOS DE PLANTIOS DE EUCALIPTO EM UMA TOPOSSEQÜÊNCIA NO CAMPUS DA UFRRJ, SEROPÉDICA (RJ)

Este estudo relaciona atributos edafoambientais e parâmetros dendrométricos de plantios de Eucalyptus urophylla. O experimento foi realizado em talhões comerciais da mesma idade, no campus da UFRRJ em Seropédica (RJ), em três sítios selecionados em posições topográficas distintas, no terço superior (TS), no terço médio (TM) e no terço inferior (TI) da encosta. Foram avaliados: atributos morfológicos, físicos e químicos dos perfis de solo; coletadas amostras nos talhões para avaliação do teor de nutrientes; e medidos parâmetros dendrométricos. Os sítios apresentam diferentes classes de solo, Argissolo Vermelho-Amarelo, Argissolo Amarelo e Planossolo Háplico, dispostos do topo para o terço inferior da encosta respectivamente. Foram observadas diferenças significativas entre os sítios, quanto aos teores de nutrientes e outros atributos químicos, que se refletiram nos parâmetros dendrométricos. Os maiores valores de área basal foram observados em TS e TI, respectivamente, 4,11 e 4,64 m2 ha-1. Os sítios onde os atributos edafoambientais mais influenciaram positivamente os parâmetros dendrométricos do Eucalyptus urophylla foram o TS e o TI

Atributos edafoambientais e parâmetros dendrométricos de plantios de eucalipto em uma toposseqüência no campus da UFRRJ, Seropédica (RJ).

This study relates soil and environmental attributes and dendrometric parameters of Eucalyptus urophylla plots. The experiment was set in eucalyptus sites for commercial production, of the same age, located in the UFRRJ campus, Seropédica municipality (RJ). Three sites were selected in different topographic positions of the landscape, summit (TS), back slope (TM), and foot slope (TI). Morphological, physical, and chemical soil attributes were evaluated; soil samples were taken from the plots for analyzing nutrient levels; and dendrometric parameters were measured. The sites showed different soil classes, Red-Yellow Ultisol, Yellow Ultisol, and Fragiudult (Planosols), placed from the summit to the foot slope positions, respectively. There were significant differences between the sites for the nutrient content and other chemical attributes, which reflected in the dendrometric parameters. The highest values of tree base area were observed in the TS and TI positions, of 4.11 and 4.64 m2/ha, respectively. The sites where soil and environmental attributes favored most the dendrometric parameters of Eucaliptus urophylla were TS and TI.Este estudo relaciona atributos edafoambientais e parâmetros dendrométricos de plantios de Eucalyptus urophylla. O experimento foi realizado em talhões comerciais da mesma idade, no campus da UFRRJ em Seropédica (RJ), em três sítios selecionados em posições topográficas distintas, no terço superior (TS), no terço médio (TM) e no terço inferior (TI) da encosta. Foram avaliados: atributos morfológicos, físicos e químicos dos perfis de solo; coletadas amostras nos talhões para avaliação do teor de nutrientes; e medidos parâmetros dendrométricos. Os sítios apresentam diferentes classes de solo, Argissolo Vermelho-Amarelo, Argissolo Amarelo e Planossolo Háplico, dispostos do topo para o terço inferior da encosta respectivamente. Foram observadas diferenças significativas entre os sítios, quanto aos teores de nutrientes e outros atributos químicos, que se refletiram nos parâmetros dendrométricos. Os maiores valores de área basal foram observados em TS e TI, respectivamente, 4,11 e 4,64 m2 ha-1. Os sítios onde os atributos edafoambientais mais influenciaram positivamente os parâmetros dendrométricos do Eucalyptus urophylla foram o TS e o TI

Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others

CHARACTERIZATION OF BIOGENIC, INTERMEDIATE AND PHYSICOGENIC SOIL AGGREGATES OF AREAS IN THE BRAZILIAN ATLANTIC FOREST

Aggregate formation and stability are related to soil quality, contributing significantly to the carbon storage and nutrient maintenance capacities of the soil. Soil aggregates are formed by two different process: physicogenic, related to moistening and drying cycles and input of organic matter; and biogenic, related to the action of macrofauna organisms and roots. The objective this work was to classify aggregates according to their formation process, quantify and compare organic carbon contents in humic substances and assess the stability of aggregates formed by different processes, in areas with different coverage in the Mid Paraiba Valley, Pinheiral, State of Rio de Janeiro, Brazil. Aggregated soil samples were collected at a depth of 0-10 cm, in a Cambisol (Cambissolo Háplico Tb Distrófico) under four plant covers: secondary forest in advanced (SFAS), medium (SFMS) and initial (SFIS) successional stages and managed mixed pasture (MMP). Aggregates were classified and identified into three morphological classes (physicogenic, biogenic and intermediate). The variables evaluated were mean weight diameter (MWD) and geometric mean diameter (GMD) of aggregates, chemical fractions of organic matter, total organic carbon (TOC) and humic substances: humin (C-HUM) humic acid (C-FAH) and fulvic acid (C-FAF). Biogenic aggregates were found in smaller quantities and showed higher TOC, C-HUM and C-FAH, compared to intermediate and physicogenic aggregates. Thus, biogenic aggregates have potential to be used as soil quality indicators for structured environments, which are able to maintain its intrinsic formation processes

EDAPHOENVIRONMENTAL ATTRIBUTES AND DENDROMETRIC PARAMETERS IN EUCALYPTUS SITES IN A TOPOSSEQUENCE AT UFRRJ CAMPUS, SEROPÉDICA (RJ)

Este estudo relaciona atributos edafoambientais e parâmetros dendrométricos de plantios de Eucalyptus urophylla . O experimento foi realizado em talhões comerciais da mesma idade, no campus da UFRRJ em Seropédica (RJ), em três sítios selecionados em posições topográficas distintas, no terço superior (TS), no terço médio (TM) e no terço inferior (TI) da encosta. Foram avaliados: atributos morfológicos, físicos e químicos dos perfis de solo; coletadas amostras nos talhões para avaliação do teor de nutrientes; e medidos parâmetros dendrométricos. Os sítios apresentam diferentes classes de solo, Argissolo Vermelho-Amarelo, Argissolo Amarelo e Planossolo Háplico, dispostos do topo para o terço inferior da encosta respectivamente. Foram observadas diferenças significativas entre os sítios, quanto aos teores de nutrientes e outros atributos químicos, que se refletiram nos parâmetros dendrométricos. Os maiores valores de área basal foram observados em TS e TI, respectivamente, 4,11 e 4,64 m2 ha-1. Os sítios onde os atributos edafoambientais mais influenciaram positivamente os parâmetros dendrométricos do Eucalyptus urophylla foram o TS e o TI.This study relates soil and environmental attributes and dendrometric parameters of Eucalyptus urophylla plots. The experiment was set in eucalyptus sites for commercial production, of the same age, located in the UFRRJ campus, Seropédica municipality (RJ). Three sites were selected in different topographic positions of the landscape, summit (TS), back slope (TM), and foot slope (TI). Morphological, physical, and chemical soil attributes were evaluated; soil samples were taken from the plots for analyzing nutrient levels; and dendrometric parameters were measured. The sites showed different soil classes, Red-Yellow Ultisol, Yellow Ultisol, and Fragiudult (Planosols), placed from the summit to the foot slope positions, respectively. There were significant differences between the sites for the nutrient content and other chemical attributes, which reflected in the dendrometric parameters. The highest values of tree base area were observed in the TS and TI positions, of 4.11 and 4.64 m2/ha, respectively. The sites where soil and environmental attributes favored most the dendrometric parameters of Eucaliptus urophylla were TS and TI

Atributos edafoambientais e parâmetros dendrométricos de plantios de eucalipto em uma toposseqüência no campus da UFRRJ, Seropédica (RJ).

Este estudo relaciona atributos edafoambientais e parâmetros dendrométricos de plantios de Eucalyptus urophylla. O experimento foi realizado em talhões comerciais da mesma idade, no campus da UFRRJ em Seropédica (RJ), em três sítios selecionados em posições topográficas distintas, no terço superior (TS), no terço médio (TM) e no terço inferior (TI) da encosta. Foram avaliados: atributos morfológicos, físicos e químicos dos perfis de solo; coletadas amostras nos talhões para avaliação do teor de nutrientes; e medidos parâmetros dendrométricos. Os sítios apresentam diferentes classes de solo, Argissolo Vermelho-Amarelo, Argissolo Amarelo e Planossolo Háplico, dispostos do topo para o terço inferior da encosta respectivamente. Foram observadas diferenças significativas entre os sítios, quanto aos teores de nutrientes e outros atributos químicos, que se refletiram nos parâmetros dendrométricos. Os maiores valores de área basal foram observados em TS e TI, respectivamente, 4,11 e 4,64 m2 ha-1. Os sítios onde os atributos edafoambientais mais influenciaram positivamente os parâmetros dendrométricos do Eucalyptus urophylla foram o TS e o TI.</p

Pedogenesis in a topo-climosequence in the Agreste region of Pernambuco

ABSTRACT The Borborema Plateau is characterized by different stages of relief evolution, which modify the climate and vegetation, and where high-altitude tropical forests can be seen surrounded by caatinga. The aim of this study was to characterize the soils of a topo-climosequence in the Agreste region of the State of Pernambuco, and evaluate the influence of the relief and climate on the pedogenesis. A topo-climosequence was selected, and trenches were opened in the geomorphological features of high-altitude forest (P1), between forest and pediplane (P2) and on a pediplanation surface (P3 and P4). A morphological description and a physical, chemical and micromorphological characterization were carried out. In general, the soils are sandy, with the predominance of a single-grain structure or weak aggregation. Higher values for pH, S, V% and assimilable P were found on the lower parts of the landscape. From the micromorphological analysis, the incipient development of pedogenic structures was detected in the C horizon in P1 and P3, clay translocation in P2 and the degradation of iron micronodules in P4. The P1 and P3 profiles were classified as Neossolos Regolíticos Distróficos espessarênicos (Regolsols), the P2 profile as a Argissolo Amarelo Distrófico típico (Alisol), and P4 as an Planossolo Háplico Eutrófico arênico (Planosol). Soil variation in the landscape was determined by climate, relief and parent material. Micromorphology was efficient in detecting attributes not seen in the field, such as incipient aggregation in the Neossolos Regolíticos (Regosols) and the degradation of iron micronodules in the Planossolo Háplico (Planosol)

Núcleos de Ensino da Unesp: artigos 2008

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq