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All publications of “Júlio Cesar Pires Santos”

4 results

Spiders (Arachnida: Araneae) in Agricultural Land Use Systems in Subtropical Environments

Marcio Gonçalves da Rosa, Júlio Cesar Pires Santos, Antônio Domingos Brescovit, Álvaro Luiz Mafra, Dilmar Baretta

06/Aug/2018

ABSTRACT Changes in land use management in agricultural areas can affect the biodiversity of spider families. This study aimed to evaluate spider diversity in different land use systems with capture by two sampling methods, and to identify soil properties that can modulate the occurrence of spiders. Five land use systems, representative of traditional agricultural areas, were evaluated in the west of Santa Catarina, Brazil, to establish a scale of land use intensity: native forest, eucalyptus reforestation areas, pastures, crop-livestock integration […]

ECOTOXICOLOGICAL ASSESSMENT OF COAL MINING WASTE

Luís Carlos Iuñes de Oliveira, Dilmar Baretta, Talyta Zortéa, Katiane Casarotto, Priscilla Dors, Mari Lucia Campos, [...]

01/Dec/2015

ABSTRACT The disposal of large amounts of coal mining waste chemically modifies the soil, and this may change the structure and activity of soil fauna. The objective of this investigation was to study the ecotoxicological effects of depositions of pyritic waste (coal plus pyrite) in two soils collected in Santa Catarina, Argissolo Vermelho-Amarelo (Ultisol) e Nitossolo Háplico (Hapludox), at the application rates of 0, 2.5, 5, 10, and 20 % of that residue. Survival and reproduction of Enchytraeus crypticus and […]

Soil macrofauna as influenced by chemical fertilizers and swine manure use in western Santa Catarina State, Brazil

Maurício Vicente Alves, Júlio Cesar Pires Santos, Deisi Tatiani de Gois, Janaina Veronezi Alberton, Dilmar Baretta

01/Apr/2008

The present study aimed to evaluate the effect of addition of increasing rates of swine manure, mineral fertilizers, and the combination of both on the abundance and diversity of soil macrofauna. The study was carried out in Campos Novos county, in the western Santa Catarina state, on an Oxisol cultivated with corn (Zea mays) and oat (Avena sativa) in succession and no tillage system. Six treatments were used: a control, with no fertilization (TT); mineral fertilization (AM); swine manure + […]

Effects of native pasture burning and Pinus monoculture on changes in soil biological attributes on the Southern Plateau of Santa Catarina – Brazil

Dilmar Baretta, Julio Cesar Pires Santos, Samuel Ribeiro Figueiredo, Osmar Klauberg-Filho

01/Oct/2005

The objective of this study was to evaluate the impact of burning native pastures and of cultivating Pinus sp in monoculture in Lages, State of Santa Catarina, Brazil. Total organic carbon (TOC), microbial biomass carbon (MBC), microbial basal respiration (C-CO2), the microbial metabolic quotient (qCO2), and the ratio MBC/TOC were analyzed. Four representative areas of the region with 0.5 ha each were selected: (a) native pasture without burning for at least 50 years (NP); (b) native pasture burnt off every year (NPF); […]