scholarly journals Gall-inducing insects of an Araucaria Forest in southern Brazil

2013 ◽  
Vol 57 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Tiago Shizen Pacheco Toma ◽  
Milton de Souza Mendonça Júnior
Keyword(s):  
Southern Brazil ◽  
Araucaria Forest

scholarly journals Wood anatomical traits of the Araucaria Forest, Southern Brazil

2016 ◽  
Vol 37 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Patricia Soffiatti ◽  
Maria Regina Torres Boeger ◽  
Silvana Nisgoski ◽  
Felipe Kauai
Keyword(s):  
Southern Brazil ◽  
Araucaria Forest

Leaf architecture of terrestrial and epiphytic ferns from an Araucaria forest in southern Brazil

Botany ◽  
2013 ◽  
Vol 91 (11) ◽  
pp. 768-773 ◽  
Author(s):  
L. Larcher ◽  
M.R.T. Boeger ◽  
P. Soffiatti ◽  
T.I. Da Silveira
Keyword(s):  
Plant Architecture ◽  
Mechanical Design ◽  
Light Interception ◽  
Leaf Position ◽  
Southern Brazil ◽  
Leaf Architecture ◽  
Leaf Form ◽  
Araucaria Forest ◽  
Maximum Light ◽  
Rigid Structure

Studies of angiosperms have associated the mechanical design of petioles with leaf form and the occurrence of simple and compound leaves. Petiole anatomy can respond differently, according to different leaf forms, to maintain plant architecture. The present study evaluated whether this premise applies to fern leaf architecture. Leaves of five ferns (Blechnum binervatum (Poir.) C.V. Morton & Lellinger, Ctenitis falciculata (Raddi) Ching, Megalastrum connexum (Kaulf.) A.R. Smith & R.C. Moran, Microgramma squamulosa (Kaulf.) de la Sota, and Serpocaulon catharinae (Langsd. & Fisch.) A.R. Sm.) from a remnant of an Araucaria Forest in southern Brazil were collected and their morphological and anatomical traits were analyzed. Results indicate that the biomechanical patterns of these terrestrial and epiphytic ferns are similar to those reported for angiosperms, except for the presence of subepidermal sclerenchyma in fern petioles. Independently of leaf form, the rigid structure of fern petioles appears to be an important adaptation to biomechanically support leaf position for maximum light interception in forest understories.

scholarly journals MORFOLOGIA DE DIÁSPOROS E PLÂNTULAS DE ESPÉCIES ARBÓREAS DA FLORESTA COM ARAUCÁRIA, NO SUL DO BRASIL

FLORESTA ◽  
2015 ◽  
Vol 45 (4) ◽  
pp. 819 ◽  
Author(s):  
Alessandra Mara Gogosz ◽  
Maria Regina Torres Boerger ◽  
Nelson Luiz Cosmo ◽  
Antônio Carlos Nogueira
Keyword(s):  
Functional Morphology ◽  
Tree Species ◽  
Morphological Characterization ◽  
Seedling Stage ◽  
Functional Ecology ◽  
Pioneer Species ◽  
Southern Brazil ◽  
Araucaria Forest ◽  
Secondary Species ◽  
Ombrophilous Forest

Neste estudo foram caracterizados morfologicamente frutos, sementes e plântulas de espécies da Floresta com Araucária (Floresta Ombrófila Mista), visando entender as estratégias de estabelecimento de diferentes grupos ecológicos. Frutos de 18 espécies arbóreas foram coletados na região de Curitiba, Paraná. As sementes foram semeadas em vermiculita e mantidas em laboratório, até a fase de plântula. Nas espécies pioneiras predominam frutos secos, deiscentes, sementes exalbuminosas, pequenas, com estruturas que favorecem a dispersão anemocórica e plântulas com cotilédones finos, foliáceos com tricomas. Nas secundárias tardias os frutos são carnosos com dispersão zoocórica, as sementes são albuminosas e as plântulas possuem cotilédones crassos, foliáceos, e, em alguns casos, também com função de reserva. Nas secundárias iniciais, as características são variáveis. A caracterização morfológica realizada dá subsídio, no contexto da ecologia funcional, à interpretação das diferentes estratégias de estabelecimento das espécies.AbstractMorphology of diaspore and seedling of tree species of the Araucaria forest (Subtropical Ombrophilous Forest) in southern Brazil. This study characterized morphologically the fruits, seeds and seedlings of species of Araucaria Forest, aiming to understand the strategies of establishing different successional groups. Therefore, fruits of 18 tree species were collected in Curitiba, Paraná. Then the seeds were sown in vermiculite and remained in the laboratory until the seedling stage. The pioneer species have predominantly dehiscent dry fruits, unalbuminous seeds, small structures that favor anemochoric dispersal and seedlings with thin cotyledons, foliaceous with trichomes. In late secondary species the fruits are fleshy with zoochorous dispersal, seeds are albuminous and seedlings present fleshy cotyledons, foliaceous, and in some cases also reserve function. In the early secondary species, the characteristics are variable. Morphological characterization allows the interpretation of functional ecology, the different strategies of establishment of species.Keywords: Succession groups; establishment; functional morphology; Mixed Ombrophilous Forest.

scholarly journals Assembly patterns and functional diversity of tree species in a successional gradient of Araucaria forest in Southern Brazil

2016 ◽  
Vol 14 (2) ◽  
pp. 67-73 ◽  
Author(s):  
José Vicente-Silva ◽  
Rodrigo S. Bergamin ◽  
Kátia J. Zanini ◽  
Valério D. Pillar ◽  
Sandra C. Müller
Keyword(s):  
Functional Diversity ◽  
Tree Species ◽  
Southern Brazil ◽  
Araucaria Forest ◽  
Successional Gradient

scholarly journals Patterns of prey selection of Trypoxylon (Trypargilum) lactitarse Saussure (Hymenoptera: Crabronidae) in southern Brazil

2008 ◽  
Vol 68 (3) ◽  
pp. 519-528 ◽  
Author(s):  
MLT. Buschini ◽  
NA. Borba ◽  
AD. Brescovit
Keyword(s):  
Prey Selection ◽  
Species Abundance ◽  
Abundant Species ◽  
Group Method ◽  
Southern Brazil ◽  
Araucaria Forest ◽  
Pair Group ◽  
Trap Nests ◽  
Different Diameters ◽  
Selection Of

This study was carried out in the Parque Municipal das Araucárias, in the municipality of Guarapuava, southern Brazil. A total of 449 T. lactitarse nests were collected using trap-nests of different diameters. Fifty three species of spiders belonging to 7 families were captured by T. lactitarse. Araneidae was the most captured family and has been strongly represented by the genus Eustala. Through Bray-Curtis's coefficient and the unweighted pair group method average (UPGMA), the spiders species can be divided into 3 groups: the smaller group includes the most abundant species (Eustala sp1, Eustala sp2, Acacesia villalobosi, Alpaida sp1 and Araneus corporosus), the second group includes species with intermediate abundance (Wagneriana iguape, Araneus omnicolor, Eustala sp4, Alpaida grayi, Eustala sp3, Larinia t-notata, Mangora sp1 and Wagneriana iguape), and the third and largest group includes the least abundant species (Aysha gr. brevimana 1, Eustala sp5, Wagneriana eupalaestra, Alpaida scriba, Alpaida veniliae, Araneus aff. omnicolor, Araneus sicki, Eustala sp8, Mangora sp2, Mangora sp3, Wagneriana juquia, Alpaida sp2, Araneus blumenau, Eustala sp6, Eustala sp7 and Ocrepeira galianoae). Of 2,029 identified spiders, 1,171 were captured in the Araucaria forest, 612 in grassland areas and 246 in the swamp. Grassland and swamp areas evidenced greater similarity between them than to the Araucaria Forest, regarding presence-absence of spider species in T. lactitarse's diet, as well as regarding species abundance in these habitats. The juvenile number (56%) was significantly higher than the female (38%) and male (6%) percentages.

Landscape mosaic of Araucaria forest and forest monocultures influencing understorey spider assemblages in southern Brazil

2008 ◽  
Vol 33 (1) ◽  
pp. 45-54 ◽  
Author(s):  
RONEI BALDISSERA ◽  
GISLENE GANADE ◽  
ANTONIO D. BRESCOVIT ◽  
SANDRA M. HARTZ
Keyword(s):  
Southern Brazil ◽  
Landscape Mosaic ◽  
Araucaria Forest

scholarly journals FOREST EDGE EFFECTS ON THE PHYTOSOCIOLOGICAL COMPOSITION OF AN ARAUCARIA FOREST FRAGMENT IN SOUTHERN BRAZIL

FLORESTA ◽  
2018 ◽  
Vol 48 (4) ◽  
pp. 483
Author(s):  
Marcelo Callegari Scipioni ◽  
Antônio Lunardi Neto ◽  
Alexandre Siminski ◽  
Vanderlei Dos Santos
Keyword(s):  
Edge Effects ◽  
Forest Succession ◽  
Forest Edge ◽  
Southern Brazil ◽  
Forest Fragment ◽  
Araucaria Forest ◽  
Cohesive Group ◽  
Pinus Taeda L ◽  
Tree Component ◽  
Different Origins

The Araucaria forests of Southern Brazil have been drastically reduced as a result of anthropic intervention and are currently found at different stages of succession. The objective of our study was to understand the influence of forest fragmentation on the phytosociological composition of its tree component. The composition of floristic groups of the tree component and their correlation with the edaphic and environmental variables in a fragment of the Araucaria Forest in the municipality of Curitibanos, state of Santa Catarina, Brazil was analyzed. A hundred and ten permanent continuous plots (10 m²) with forest edges of different origins and formation times were established for sampling. Trees with diameter ≥ 5 cm at breast height (DBH) were measured and identified. Using TWINSPAN, data were analyzed for species importance values (including indicator species) in the formation of floristic groups. Floristic similarities resulted in separating groups conditioned by the forest succession. The presence of the invasive species Pinus taeda L. and pioneer species at the forest expansion border contributed to the formation of a spatially cohesive group. The other areas did not show influence of edge effects, being in an initial secondary succession stage, dominated by Jacaranda puberula Cham. Low edaphic variation among the classes of lithosols in a flat relief had no influence on the formation of floristic groups.

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