Connectivity dynamics of Araucaria forest and grassland surrounding Passo Fundo National Forest, southern Brazil

Este trabalho teve o objetivo de analisar e descrever os padrões espaciais e as características quali-quantitativas da regeneração da espécie arbórea Ocotea odorifera (Vell.) Rohwer (canela-sassafrás) num fragmento de Floresta Ombrófila Mista localizado na Floresta Nacional de Irati, região centro-sul do estado do Paraná. Para tanto, foram selecionados três hectares de amostra para coleta de informações sobre altura, diâmetro e localização de todos os indivíduos de canela-sassafrás com altura total ≥30 cm. Análises univariadas por meio da função K de Ripley foram realizadas, para descrever os padrões espaciais dos indivíduos em fases distintas de regeneração e das árvores adultas dessa espécie com diferentes tamanhos. A espécie apresentou em geral um padrão espacial agregado para a regeneração natural em todas as escalas analisadas, sugerindo ser um padrão característico da espécie nas fases iniciais. A mudança do padrão agregado para aleatório foi comprovada com a análise espacial para as diferentes classes de tamanho dos indivíduos de canela-sassafrás. Algumas inferências foram feitas em relação aos processos subjacentes, que podem estar associados com os resultados. É possível afirmar que a espécie apresenta potencialidades para o manejo e a conservação com excelente capacidade de regeneração natural.Palavras-chave: Floresta com Araucária; autoecologia; estatística espacial; canela-sassafrás. AbstractSpatial pattenrs for Ocotea odorifera regeneration in National Forest, Irati, Pr. The present research aimed to analyze and describe spatial patterns and quali-quantitative features of natural regeneration of tree species of Ocotea odorifera (Vell.) Rohwer (canela-sassafrás) in a fragment of Mixed Ombrophyllous Forest (Araucarian Forest) located at the National Forest of Irati, Paraná State, Southern Brazil. Three plots of one hectar each were sampled and height, diameter and location informations were collected for all plants of canela-sassafrás with total height ≥ 30 cm. Univariate analyzes using K-function of Ripley were done in order to describe spatial patterns of plants at different regeneration phases as well as of canela-sassafrás adults. Generally, this species presented an aggregated spatial pattern at all considered scales of regeneration, suggesting to be a typical pattern at initial phases of this species. The change from aggregated to random spatial pattern was tested analyzing different size classes of canela-sassafrás. Some inferences were made considering subjacent processes that could be associated to obtained results. It is possible to say that the studied species presents potencialities for its management and conservation with excellent natural regeneration capacity. Keywords: Araucaria Forest; auto-ecology; spatial statistics; canela-sassafrás.

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Wood anatomical traits of the Araucaria Forest, Southern Brazil

Bosque (Valdivia) ◽

10.4067/s0717-92002016000100003 ◽

2016 ◽

Vol 37 (1) ◽

pp. 21-31 ◽

Cited By ~ 2

Author(s):

Patricia Soffiatti ◽

Maria Regina Torres Boeger ◽

Silvana Nisgoski ◽

Felipe Kauai

Keyword(s):

Southern Brazil ◽

Araucaria Forest

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Gall-inducing insects of an Araucaria Forest in southern Brazil

Revista Brasileira de Entomologia ◽

10.1590/s0085-56262013005000001 ◽

2013 ◽

Vol 57 (2) ◽

pp. 225-233 ◽

Cited By ~ 10

Author(s):

Tiago Shizen Pacheco Toma ◽

Milton de Souza Mendonça Júnior

Keyword(s):

Southern Brazil ◽

Araucaria Forest

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

Botany ◽

10.1139/cjb-2013-0114 ◽

2013 ◽

Vol 91 (11) ◽

pp. 768-773 ◽

Cited By ~ 1

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.

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

FLORESTA ◽

10.5380/rf.v45i4.35017 ◽

2015 ◽

Vol 45 (4) ◽

pp. 819 ◽

Cited By ~ 3

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.

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

Natureza & Conservação ◽

10.1016/j.ncon.2016.09.006 ◽

2016 ◽

Vol 14 (2) ◽

pp. 67-73 ◽

Cited By ~ 6

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

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

Brazilian Journal of Biology ◽

10.1590/s1519-69842008000300008 ◽

2008 ◽

Vol 68 (3) ◽

pp. 519-528 ◽

Cited By ~ 11

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.

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