8 documents found, page 1 of 1
Occurrence of Amblycerus species in Cordia trichotoma seeds and their influence...
Fleck, Marciane Danniela; Costa, Ervandil Corrêa da; Araújo, Maristela Machado; Schoeninger, Karine; Machado, Leonardo Mortari; Silva, Jéssica Maus daForest species can have their seeds damaged by granivorous insects, especially by those in their larval stage. In this context, this study aims to report the occurrence of Amblycerus species in Cordia trichotoma seeds, to describe their main damage to seeds and effects on germination, as well as their associated hymenopteran parasitoids. Therefore, seven trees were selected in the municipality of Taquaruçu do S...
Artropodofauna associada às copas de Acacia mearnsii, Enterolobium contortisili...
Machado, Leonardo MortariCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES; The main objective of the present study was to describe the arthropod fauna associated with the upper stratum of the species Acacia mearnsii, Enterolobium contortisiliquum, Eucalyptus dunnii and Dodonaea viscosa in mined and non-mined areas in Rio Grande do Sul, characterizing, through ecological parameters, the level of recovery of each treat...
Soil fauna in initial planting of Eucalyptus under different alternatives to we...
Garlet, Juliana; Costa, Ervandil Corrêa; Boscardin, Jardel; Machado, Dayanna Nascimento; Pedron, Leandra; Machado, Leonardo MortariThe aim of this study was to investigate the effect of different chemical control of alternative weed in soil fauna in initial planting of Eucalyptus grandis. The treatments consisted of partial and full control of the weed vegetation. Collections were conducted through soil trap (pitfall). We collected 26,136 specimens, distributed in 13 taxonomic groups (Araneae, Blattodea, Chilopoda, Collembola, Coleoptera, ...
Dynamics of use and land cover in the Rio Pardo valley, Rio Grande do Sul
Schroder, Thomas; Pereira, Rudiney Soares; Zimmermann, Anna Paula Lora; Redin, Cristina Gouvêa; Fleck, Marciane Danniela; Machado, Leonardo MortariThe aims of this study were to evaluate rates of deforestation and forest regeneration in the time span between 1990 and 2014, furthermore to estimate land cover and use by the year of 2018 in the Rio Pardo Valley region. Landsat images were used for land cover and use classification and Dinamica EGO software was used to provide real and estimated transitions among land cover and use classes. Forested area incr...
Novos registros de Asopinae (Pentatomidae) predadores de lagartas Nystalea nyse...
Magistrali, Iris Cristiane; Costa, Ervandil Corrêa; Machado, Leonardo Mortari; Da Nadai, Janaínahttp://dx.doi.org/10.5007/2175-7925.2014v27n2p209Lagartas desfolhadoras são importantes insetos pragas em plantações florestais. O objetivo deste trabalho foi registrar a ocorrência de percevejos predadores em surtos de Nystalea nyseus em plantações de eucalipto. O estudo foi realizado em uma plantação seminal de Eucalyptus saligna Smith localizada no município de São Sepé, Rio Grande do Sul. Uma inspeção visua...
Scolytids associated with a population of black wattle (Acacia mearnsii De Wild)
Machado, Leonardo Mortari; Costa, Ervandil Corrêa; Magistrali, Iris Cristiane; Boscardin, Jardel; Machado, Dayanna do Nascimento; Garlet, JulianaBlack wattle cultivation is an important source of income in the State of Rio Grande do Sul, Brazil. Due to lack of information concerning the insect fauna in this kind of environment, this paper aims to analyze on a quali-quantitative basis the scolytid species associated with a population of Acacia mearnsii De Wild, in order to identify species that may cause damage to this species. For this, 36 flight-interc...
Damage of Oncideres saga in plantations of Acacia mearnsii in Rio Grande do Sul...
Magistrali, Iris Cristiane; Costa, Ervandil Corrêa; Garlet, Juliana; Boscardin, Jardel; Machado, Leonardo MortariThe objective of this study was to characterize the damage caused by Oncideres saga in plantations of Acacia mearnsii. The percentage of trees attacked was evaluated and the diameter and length of the branches were measured. It was observed that 34.3 % of the trees of A. mearnsii presented branches cut by O. saga. The average diameter and length of the cut branches were 5.75 cm and 4.95 m, respectively. The lo...
Determinação da altura de voo de escolitídeos em mata nativa e em povoamento de...
Machado, Leonardo MortariScolytids (Curculionidae, Scolytinae) are small borer‟s beetles belonging to the order Coleoptera that develop within or under the bark of trees. In northern countries, these insects cause significant damage especially when outbreaks occur. In Brazil in general, the damage is minor when compared to the northern hemisphere. Given the importance of subfamily Scolytinae, this paper aims at providing a better under...