Lichens as indicators of environmental quality in southern Brazil: An integrative approach based on community composition and functional parameters

2019 ◽  
Vol 107 ◽  
pp. 105587 ◽  
Author(s):  
Fabiane Lucheta ◽  
Natália Mossmann Koch ◽  
Márcia Isabel Käffer ◽  
Roberta Plangg Riegel ◽  
Suzana Maria de Azevedo Martins ◽  
...  
Keyword(s):  
Community Composition ◽  
Environmental Quality ◽  
Integrative Approach ◽  
Southern Brazil ◽  
Functional Parameters

A new riparian species of Ramalina (Ramalinaceae) from Brazil, with a key to neotropical saxicolous species

2018 ◽  
Vol 50 (5) ◽  
pp. 541-553 ◽  
Author(s):  
Emerson Luiz GUMBOSKI ◽  
Sionara ELIASARO ◽  
Mayara Camila SCUR ◽  
Aline Pedroso LORENZ-LEMKE ◽  
Rosa Mara BORGES DA SILVEIRA
Keyword(s):  
New Species ◽  
Ribosomal Dna ◽  
Habitat Preference ◽  
Molecular Data ◽  
Genetic Distances ◽  
Integrative Approach ◽  
Chemical Variation ◽  
Southern Brazil ◽  
Riparian Species ◽  
High Altitude Grasslands

AbstractThe new species Ramalina fleigiae from Brazil is described growing on rocks in riverbeds in high altitude grasslands of southern Brazil. It grows in areas with constant water flow, sometimes almost immersed, and always in exposed habitats. Through an integrative approach, the detailed description of R. fleigiae includes morphological, anatomical, ecological, chemical and molecular data. Ribosomal DNA-based phylogenies suggest that R. fleigiae is more closely related to a species that shares its habitat preference (R. laevigata) than to the morphologically and chemically similar R. exiguella and R. gracilis. Ramalina fleigiae and R. laevigata can be distinguished by thallus morphology (irregularly flat branches in R. fleigiae vs. flat to canaliculate in R. laevigata) and pattern of chondroid tissue, as genetic distances between them are compatible with the interspecific range. It is possible that many species of Ramalina still remain hidden within the morphological or chemical variation of currently accepted species. Combining ecological, anatomical and molecular data will improve our future understanding of this genus.

scholarly journals Famílias de Hymenoptera (Insecta) como ferramenta avaliadora da conservação de restingas no extremo sul do Brasil

2010 ◽  
Vol 2 (3) ◽  
pp. 64-69
Author(s):  
Eduardo Alves Oliveira ◽  
Filipe Neves Calheiros ◽  
Daiane Silveira Carrasco ◽  
Cristina Maria Loyola Zardo
Keyword(s):  
Environmental Quality ◽  
System Stability ◽  
High Abundance ◽  
Ecological Groups ◽  
Southern Brazil ◽  
Evaluation Tool ◽  
High Dominance ◽  
Different Levels

Com o objetivo de estimar e comparar a diversidade e flutuação populacional das famílias de Hymenoptera em área de restinga foi realizado um levantamento faunístico em duas áreas de restinga com diferentes níveis de conservação. Foram coletados 5.518 himenópteros distribuídos em 30 famílias. Os picos populacionais na flutuação das famílias ocorreram no verão confirmando a alta correlação da temperatura com a distribuição das famílias. Constatou-se na restinga em sucessão maior riqueza, porém, com alta dominância, abrigando representantes dos três grupos ecológicos (antófilos, generalistas e parasitóides) em alta abundância. A restinga preservada, com 17 famílias, verificou-se mais diversa e homogênea, onde verificou-se maior abundância dos parasitóides, devido à maior estabilidade do sistema. A riqueza de famílias de Hymenoptera em áreas de restinga pode ser utilizada como parâmetro indicativo de qualidade ambiental, para este tipo de bioma. Hymenoptera Families (Insecta) as Evaluation Tool of the Conservation of Sandbanks in Southern Brazil Abstract. With aim to estimate and compare the diversity and population of the Hymenoptera families in a sandbank area was carried out a wildlife survey in two areas of sandbank with different levels of conservation. We collected 5 518 Hymenoptera distributed in 30 families. The peaks in the families fluctuation occurred in the summer confirmed the high correlation of temperature with the distribution of families. The sandbank in succession had the highest richness, however with high dominance, hosting representatives of the three ecological groups (anthophilous, generalists and parasitoids) in high abundance. The sandbank preserved, with 17 families, was more diverse and homogeneous, where the parasitoids showed greater abundance due to greater system stability. The richness of Hymenoptera families in sandbanks can be used as a parameter indicative of environmental quality.

scholarly journals Integrating morphology and metagenomics to understand taxonomic variability of Amphisorus (Foraminifera, Miliolida) from Western Australia and Indonesia

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0244616
Author(s):  
Jan-Niklas Macher ◽  
Martina Prazeres ◽  
Sarah Taudien ◽  
Jamaluddin Jompa ◽  
Aleksey Sadekov ◽  
...  
Keyword(s):  
Community Composition ◽  
Western Australia ◽  
Bacterial Community Composition ◽  
Morphological Variability ◽  
Microbial Community Composition ◽  
Integrated Approach ◽  
Taxonomic Diversity ◽  
Integrative Approach ◽  
Sampling Location ◽  
Metagenomic Sequencing

Foraminifera are a group of mostly marine protists with high taxonomic diversity. Species identification is often complex, as both morphological and molecular approaches can be challenging due to a lack of unique characters and reference sequences. An integrative approach combining state of the art morphological and molecular tools is therefore promising. In this study, we analysed large benthic Foraminifera of the genus Amphisorus from Western Australia and Indonesia. Based on previous findings on high morphological variability observed in the Soritidae and the discontinuous distribution of Amphisorus along the coast of western Australia, we expected to find multiple morphologically and genetically unique Amphisorus types. In order to gain detailed insights into the diversity of Amphisorus, we applied micro CT scanning and shotgun metagenomic sequencing. We identified four distinct morphotypes of Amphisorus, two each in Australia and Indonesia, and showed that each morphotype is a distinct genotype. Furthermore, metagenomics revealed the presence of three dinoflagellate symbiont clades. The most common symbiont was Fugacium Fr5, and we could show that its genotypes were mostly specific to Amphisorus morphotypes. Finally, we assembled the microbial taxa associated with the two Western Australian morphotypes, and analysed their microbial community composition. Even though each Amphisorus morphotype harboured distinct bacterial communities, sampling location had a stronger influence on bacterial community composition, and we infer that the prokaryotic community is primarily shaped by the microhabitat rather than host identity. The integrated approach combining analyses of host morphology and genetics, dinoflagellate symbionts, and associated microbes leads to the conclusion that we identified distinct, yet undescribed taxa of Amphisorus. We argue that the combination of morphological and molecular methods provides unprecedented insights into the diversity of foraminifera, which paves the way for a deeper understanding of their biodiversity, and facilitates future taxonomic and ecological work.

scholarly journals Evaluation of the environmental quality of a protected riparian forest in Southern Brazil

2014 ◽  
Vol 35 (3) ◽  
pp. 325-336 ◽  
Author(s):  
Márcia Isabel Käffer ◽  
Suzana Maria de Azevedo Martins
Keyword(s):  
Environmental Quality ◽  
Riparian Forest ◽  
Southern Brazil

scholarly journals An integrative approach for fungal conservation in southern Brazil

Oryx ◽  
2022 ◽  
Vol 56 (1) ◽  
pp. 13-13
Author(s):  
Diogo H. Costa-Rezende ◽  
Thiago Kossmann ◽  
Mahatmã Titton ◽  
Elisandro Ricardo Drechsler-Santos
Keyword(s):  
Integrative Approach ◽  
Southern Brazil ◽  
Fungal Conservation

scholarly journals Dispersion of Leishmania (Leishmania) infantum in central-southern Brazil: Evidence from an integrative approach

2019 ◽  
Vol 13 (8) ◽  
pp. e0007639 ◽  
Author(s):  
Aline Kuhn Sbruzzi Pasquali ◽  
Rafael Antunes Baggio ◽  
Walter Antonio Boeger ◽  
Nilsa González-Britez ◽  
Deborah Carbonera Guedes ◽  
...  
Keyword(s):  
Leishmania Infantum ◽  
Integrative Approach ◽  
Southern Brazil

Seeing the true colours: three new species of Obama (Platyhelminthes:Continenticola) from remnants of Atlantic forest in southern Brazil based on an integrative approach

2021 ◽  
Author(s):  
Giuly G. Iturralde ◽  
Heloísa Allgayer ◽  
Victor H. Valiati ◽  
Ana M. Leal-Zanchet
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Likelihood Estimation ◽  
Variable Number ◽  
Integrative Approach ◽  
Southern Brazil ◽  
Close Relationship ◽  
Three New Species ◽  
Colour Patterns ◽  
Ombrophilous Forest

The genus Obama Carbayo, Álvarez-Presas, Olivares, Marques, Froehlich & Riutort, 2013 currently comprises 41 species, most of them from Brazilian rainforests. This study describes three new species, viz. Obama autumna sp. nov., Obama leticiae sp. nov. and Obama aureolineata sp. nov., from remnants of Mixed Ombrophilous Forest in southern Brazil, based on an integrative approach and analyses their relationships within the genus. Obama autumna and O. aureolineata show distinctive colour patterns, contrasting yellow and black, which is unusual in species of the genus. The three species can be easily distinguished from their congeners by their external features and a combination of anatomical characteristics, such as the pharyngeal shape, shape and arrangement of the prostatic vesicle and anatomy of the penis papilla. The morphological hypotheses are corroborated by three species delimitation methods (ABGD, PTP and GMYC) and by phylogenetic analysis of the cytochrome c oxidase subunit I gene using maximum likelihood estimation and Bayesian inference. Furthermore, our phylogenetic analyses point out that Obama may be subdivided into three main clades, containing a variable number of well supported groups, the relationships of which remain unresolved. Obama autumna belongs to a distinct clade in relation to O. aureolineata and O. leticiae. Obama aureolineata belongs to one of the well supported groups, having a close relationship with O. apeva. Obama autumna may be more closely related to O. anthropophila and O. decidualis and O. leticiae to O. braunsi. However, the low nodal support does not allow the phylogenetic relationships of these species to be clearly established. We discuss morphological knowledge gaps in Obama, as well as issues regarding analyses based on molecular markers, which should be addressed to clarify relationships within the genus. urn:lsid:zoobank.org:pub:9EE7316D-F0BE-49EC-BBFD-5687952D6592

scholarly journals Relationship between N : P : Si ratio and phytoplankton community composition in a tropical estuarine mangrove ecosystem

2015 ◽  
Vol 12 (3) ◽  
pp. 2307-2355 ◽  
Author(s):  
A. K. Choudhury ◽  
P. Bhadury
Keyword(s):  
Community Composition ◽  
Functional Traits ◽  
Phytoplankton Community ◽  
Mangrove Ecosystem ◽  
Nutrient Concentrations ◽  
Integrative Approach ◽  
Habitat Variability ◽  
Redfield Ratio ◽  
Phytoplankton Community Composition ◽  
Elemental Stoichiometry

Abstract. The present work aims at understanding the importance of Brzezinski–Redfield ratio (modified Redfield ratio) as a determinant of natural phytoplankton community composition in a mangrove ecosystem. Even though this ecoregion has been reported to be mostly eutrophic, localised and anthropogenic influences often result in habitat variability especially with regard to nutrient concentrations at different parts of this ecosystem. Phytoplankton, an important sentinel in aquatic ecosystems may respond differently to such alterations in habitat thereby bringing about significant changes in the community composition. Results show that even though habitat variability does exist at our study area and varied on a spatial and temporal scale, the nutrient concentrations were intricately balanced that never became limited and complemented well with the concept of modified Redfield ratio. However, an integrative approach to study phytoplankton community involving microscopy and rbcL clone library and sequencing approach revealed that it was the functional traits of individual phytoplankton taxa that determined the phytoplankton community composition rather than the nutrient concentrations of the study area. Hence we conclude that the recent concept of functional traits and elemental stoichiometry does not remain restricted to controlled environment of experimental studies only but occur in natural mangrove habitat.

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