Interaction network and the relationships between bromeliads and hummingbirds in an area of secondary Atlantic rain forest in southern Brazil

2007 ◽  
Vol 23 (6) ◽  
pp. 663-671 ◽  
Author(s):  
Vítor de Queiroz Piacentini ◽  
Isabela Galarda Varassin
Keyword(s):  
Species Richness ◽  
Rain Forest ◽  
Evolutionary Relationship ◽  
Interaction Network ◽  
Atlantic Rain Forest ◽  
Southern Brazil ◽  
Generalist Species ◽  
Visit Frequency ◽  
Species Richness And Abundance ◽  
The Relationship

The reciprocal importance of bromeliads and hummingbirds has been proposed for many years, even suggesting coevolution between these two groups. Nevertheless, data are lacking that allow a better test of the relationships involved. Here we investigate the relationship between bromeliads and hummingbirds in an area of secondary Atlantic rain forest in southern Brazil. The study examined the interactions among 12 species of bromeliad and 10 of hummingbird at Reserva Natural Salto Morato, Paraná state. The number of flowering species of bromeliad and the species richness and abundance of hummingbirds were quantified monthly between November 2004 and October 2005. Focal observations on each bromeliad species were made to determine the hummingbird visitors. Neither species richness nor abundance of hummingbirds were related to bromeliad phenology. Together with the monthly variation in visit frequency by a given pollinator to a given plant, these factors indicate a generalization in the use of bromeliads by hummingbirds and argue against tight coevolution. Ramphodon naevius and Thalurania glaucopis were the main pollinators in the community. Aechmea nudicaulis was the most generalist bromeliad species. The generalist species interacted with other generalists or with asymmetric specialists and there was no specialist–specialist interaction. This produced a strongly organized and nested matrix of interactions. This nestedness is similar to other plant-pollinators networks, supporting the hypothesis that the evolutionary relationship between bromeliads and hummingbirds is no stronger than that of other pollination networks.

scholarly journals Species richness of pteridophytes in a montane Atlantic rain forest plot of Southern Brazil

2005 ◽  
Vol 19 (3) ◽  
pp. 519-525 ◽  
Author(s):  
Vinícius Antonio de Oliveira Dittrich ◽  
Jorge Luiz Waechter ◽  
Alexandre Salino
Keyword(s):  
Species Richness ◽  
Rain Forest ◽  
Life Form ◽  
Life Forms ◽  
Forest Plot ◽  
Atlantic Rain Forest ◽  
Brazilian Atlantic Forest ◽  
Southern Brazil ◽  
Floristic Survey ◽  
Ombrophilous Forest

A floristic survey of pteridophytes (ferns and fern allies) was carried out in a 1ha plot in the Pico do Marumbi State Park, Morretes, State of Paraná, Southern Brazil. The study area is covered with a closed ombrophilous forest (Brazilian Atlantic Forest) and lies approximately 630 m in elevation. All species and life-forms of pteridophytes growing in the plot were registered and most of them were collected for taxonomic identification. A total of 81 species, belonging to 17 families were registered. The richest were Polypodiaceae (12 species), Hymenophyllaceae (11) and Lomariopsidaceae (11). The richest genera were Asplenium (ten species), Elaphoglossum (10) and Trichomanes (six). Life-form composition was: epiphytes (49 species), terrestrials (28), lithophytes (two), epiphytes/terrestrials/lithophytes (one) and epiphytes/lithophytes (one). No hemiepiphytes were found. Terrestrials included herbaceous (22 species), arborescent (four) and climbing (two). Species richness of the plot can be considered as high when compared to other neotropical sites.

A new Brazilian species of Stenochironomus Kieffer mining decayed leaves in bromeliads (Diptera: Chironomidae)

Zootaxa ◽  
2005 ◽  
Vol 1046 (1) ◽  
pp. 37 ◽  
Author(s):  
LUIZ CARLOS DE PINHO ◽  
HUMBERTO FONSECA MENDES ◽  
CARLOS BRISOLA MARCONDES
Keyword(s):  
Rain Forest ◽  
Environmental Conservation ◽  
Atlantic Rain Forest ◽  
Life Stages ◽  
Southern Brazil ◽  
Conservation Unit ◽  
Santa Catarina ◽  
Brazilian Species

All life stages of Stenochironomus atlanticus Pinho & Mendes sp. n. are described and figured. The larva mines decaying leaves held in the water of several bromeliad species (Canistrum lindenii (Regel) Mez, Neoregelia laevis (Mez) L.B. Smith, Nidularium innocentii Lemaire, Vriesea philippocoburgii Wawra, and Vriesea vagans (L.B. Smith) L.B. Smith.) in the Atlantic Rain Forest in southern Brazil [Desterro Environmental Conservation Unit (Unidade de Conservação Ambiental Desterro – UCAD), Santa Catarina Island]. Stenochironomus atlanticus is the only species in the genus found in the phytotelmata habitat, and it apparently is restricted to this environment.

scholarly journals Species richness and abundance of bats in fragments of the stational semidecidual forest, Upper Paraná River, southern Brazil

2009 ◽  
Vol 69 (2 suppl) ◽  
pp. 727-734 ◽  
Author(s):  
H. Ortêncio-Filho ◽  
NR. Reis
Keyword(s):  
Species Richness ◽  
Anthropogenic Impacts ◽  
Paraná River ◽  
Forest Fragments ◽  
Southern Brazil ◽  
Parana River ◽  
Upper Paraná River Floodplain ◽  
Upper Paraná River ◽  
Species Richness And Abundance ◽  
Artibeus Lituratus

The Upper Paraná River floodplain is inserted in a region of the Mata Atlântica biome, which is a critical area to preserve. Due to the scarcity of researches about the chiropterofauna in this region, the present study investigated species richness and abundance of bats in remnants from the stational semidecidual forest of the Upper Paraná River, southern Brazil. Samplings were taken every month, from January to December 2006, using 32 mist nets with 8.0 x 2.5 m, resulting in 640 m²/h and totaling a capture effort of 87,040 m²/h. In order to estimate the species richness, the following estimators were employed Chao1 and Jack2. During the study, a total of 563 individuals belonging to 17 species (Artibeus planirostris, Artibeus lituratus, Carollia perspicillata, Platyrrhinus lineatus, Sturnira lilium, Artibeus fimbriatus, Myotis nigricans, Desmodus rotundus, Artibeus obscurus, Noctilio albiventris, Phylostomus discolor, Phylostomus hastatus, Chrotopterus auritus, Lasiurus ega, Chiroderma villosum, Pygoderma bilabiatum and Lasiurus blossevillii) were captured. The estimated richness curves tended to stabilize, indicating that most of the species were sampled. Captured species represented 10% of the taxa recorded in Brazil and 28% in Paraná State, revealing the importance of this area for the diversity of bats. These findings indicate the need to determine actions aiming to restrict human activities in these forest fragments, in order to minimize anthropogenic impacts on the chiropterofauna.

scholarly journals Checklist of ferns and lycophytes from the highlands of Pico Paraná State Park, Paraná, Brazil

Rodriguésia ◽  
2018 ◽  
Vol 69 (2) ◽  
pp. 301-307 ◽  
Author(s):  
Jovani B. de Souza Pereira ◽  
Paulo H. Labiak
Keyword(s):  
Endangered Species ◽  
Geographic Distribution ◽  
Rain Forest ◽  
Phylogenetic Diversity ◽  
Life Forms ◽  
Atlantic Rain Forest ◽  
Southern Brazil ◽  
Serra Do Mar ◽  
High Level ◽  
Ferns And Lycophytes

Abstract We present a checklist for the ferns and lycophytes from Pico Paraná State Park, in Southern Brazil. The Park is entirely located at the Serra do Mar mountains, and represents an important remnant of the Atlantic Rain Forest with altitude achieving 1,887 m. In this locality is the Pico Paraná, the highest mountain in Southern Brazil. This study was focused on the altitudes above 1,000 m, which are mainly represented by dwarf forests and altitudinal fields. A total of 142 species were recorded, three of them (Ceradenia maackii, Diplazium tamandarei, and Stenogrammitis wittigiana) are only found in the park in Southern Brazil. Besides of the checklist of the species, we highlight some important aspects related to endangered species, geographic distribution, and life forms. The high level of endemism, the presence of endangered species, and the phylogenetic diversity as represented by distinct families of ferns and lycophytes show the biogeographic importance of this area for the conservation of these groups of plants.

scholarly journals Diversity and distribution of testate amoebae (Amoebozoa, Rhizaria) in reservoirs, Northeastern Bulgaria

2018 ◽  
Vol 5 (2) ◽  
pp. 90-99
Author(s):  
Rositsa Davidova ◽  
Senay Sevginov
Keyword(s):  
Regression Analysis ◽  
Species Richness ◽  
Diversity Index ◽  
Taxonomic Diversity ◽  
Testate Amoebae ◽  
The Other ◽  
Water Volume ◽  
Species Richness And Abundance ◽  
Relationship Of ◽  
The Relationship

Abstract The aim of the study is to describe the testate amoebae fauna in seven reservoirs in the Northeastern Bulgaria and to investigate the relationship of taxonomic diversity and abundance of these organisms to the some characteristics of the reservoirs. A total of 52 species, varieties and forms belonging to 15 genera were identified in the benthal of the coastal zone. There are significant differences in species richness and abundance between the testacea of different reservoirs. Number of taxa was significantly higher in the Beli Lom (29 species and 12 genera) and Loznitsa (22 species and 13 genera). Most of the reservoirs - Kara Michal, Bogdantsi, Isperih, Lipnik and Brestovene have extremely poor fauna compared to other similar reservoirs. This is confirmed by the low values of the Shannon-Weaver diversity index, which varied between 1.04 and 2.396, as well as by the other indices used to assess the environmental conditions in the reservoirs. The data of the regression analysis showed that a relation between age, surface area and water volume of the reservoirs and the species richness and abundance of testacea is not established.

scholarly journals New distribution record of Nigrohydnum nigrum Ryvarden (Polyporales: Basidiomycota) in the Atlantic forest

Check List ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 97 ◽  
Author(s):  
Gerardo Robledo ◽  
Adriana De Mello Gugliotta
Keyword(s):  
Atlantic Forest ◽  
Rain Forest ◽  
Rio Grande ◽  
Atlantic Rain Forest ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Porto Alegre ◽  
Voucher Specimen ◽  
Distribution Record ◽  
New Distribution

Nigrohydnum nigrum Ryvarden is a rare polypore previously known only from two records in Brazil. During a herbarium revision at SP we have identified an old voucher specimen, extending the previously known geographic distribution to the Atlantic rain forest of Porto Alegre, Rio Grande do Sul State, Southern Brazil.

scholarly journals Eusocial Apidae in tropical insular region

2006 ◽  
Vol 49 (5) ◽  
pp. 733-738 ◽  
Author(s):  
Maria Cristina Affonso Lorenzon ◽  
Marilena de Menezes Silva Conde ◽  
Celso Guimarães Barbosa
Keyword(s):  
Species Richness ◽  
Rain Forest ◽  
Secondary Growth ◽  
Southeastern Brazil ◽  
Atlantic Rain Forest ◽  
High Humidity ◽  
Foraging Activity ◽  
Tropical Islands ◽  
One Year ◽  
Insular Region

This study examined species richness and relative abundance of eusocial Apidae in an insular region of rain-forest, southeastern Brazil. Sampling took place during one year, using an standardized method with entomological net, at sites of secondary growth habitats surrounded by Atlantic rain-forest. Thirteen species of eusocial Apidae were netted at flowers, over 80% of the captured individuals were meliponine species, although the presence of Apis mellifera, commonly dominant in Brazilian habitats. Foraging activity of these bee species were essentially non-seasonal, apparently affected by high humidity. The patterns in abundance and species richness observed in Ilha Grande differed with other studies conducted at tropical islands, which were characterized by the poverty of meliponine species.

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