scholarly journals Small mammals from the lasting fragments of Araucaria Forest in southern Brazil: a study about richness and diversity

2021 ◽  
Vol 111 ◽  
Author(s):  
Guilherme Grazzini ◽  
Fernanda Gatto-Almeida ◽  
Liliani M. Tiepolo
Keyword(s):  
Small Mammals ◽  
Southern Brazil ◽  
Araucaria Forest

scholarly journals Patterns of arboreal and terrestrial space use by non-volant small mammals in an Araucaria forest of southern Brazil

2014 ◽  
Vol 86 (2) ◽  
pp. 807-819 ◽  
Author(s):  
MAURY S.L. ABREU ◽  
LARISSA R. DE OLIVEIRA
Keyword(s):  
Habitat Use ◽  
Small Mammals ◽  
Space Use ◽  
Vertical Stratification ◽  
Microhabitat Use ◽  
Southern Brazil ◽  
Ecological Data ◽  
Araucaria Forest ◽  
Use Patterns ◽  
Dense Vegetation

Despite the advances in the techniques for researching arboreal small mammals, detailed ecological data, such as habitat use patterns, are practically nonexistent for many species. Using 150 live-traps installed on the ground, understory (1.0-5.0m) and canopy (>5.0m) we investigated patterns of arboreal and terrestrial space use by small mammals in an Araucaria Forest in southern Brazil (29°29′08″S; 50°12′26″W). We also measured 19 microhabitat variables that could potentially influence the abundance of such mammals on each trap station. The results indicated that Akodon montensis and A. serrensis were mainly terrestrial. Delomys dorsalis was also terrestrial, but it also used understory (17.24% of captures). Juliomys sp. and Gracilinanus microtarsus were the most arboreal small mammals recorded. A. montensis was associated with dense vegetation, while A. serrensis selected positively opened areas. Juliomys sp. and G. microtarsus were associated to microhabitat variables related to the access and movement within the canopy. Moreover, bromeliads on arboreal layer were an important factor for these two arboreal species. This is the first study to report microhabitat associations by Juliomys sp. and A. serrensis, and we demonstrated that vertical stratification and microhabitat use were both synergic mechanisms to determine habitat use by small mammals on the Araucaria Forest of southern Brazil.

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

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 Microhabitat of small mammals at ground and understorey levels in a deciduous, southern Atlantic Forest

2013 ◽  
Vol 85 (2) ◽  
pp. 727-736 ◽  
Author(s):  
GERUZA L. MELO ◽  
BARBARA MIOTTO ◽  
BRISA PERES ◽  
NILTON C. CACERES
Keyword(s):  
Habitat Selection ◽  
Small Mammals ◽  
Strong Evidence ◽  
Animal Species ◽  
Deciduous Forest ◽  
Distribution Patterns ◽  
Microhabitat Use ◽  
Southern Brazil ◽  
Different Types ◽  
Didelphis Albiventris

Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and Gracilinanus microtarsus) were captured. Captured species presented significant differences on their microhabitat use (ANOVA, p = 0.003), particularly between ground and understorey sites. Akodon montensis selected positively terrestrial ferns and trunks, S. angouya selected lianas, D. albiventris selected fallen trunks and Piper sp., and G. microtarsus choose tree trunks and lianas. We demonstrated that the local small-mammal assemblage does select microhabitats, with different types of associations between species and habitats. Besides, there is a strong evidence of habitat selection in order to diminish predation.

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.

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