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Research Interests: Evolutionary Biology, Genetics, Phylogenetics, Biology, Medicine, and 15 morePhylogeny, Grasses, Molecular phylogeny, Phylogenetic analysis, Molecular Phylogenetics and Evolution, Poaceae, Molecular phylogenetics, Phylogenetic Systematics, Gramineae, Monophyly, Plant phylogeny, Phylogenetic Tree, Character Evolution, Lineage Sorting, and Likelihood Functions
Mate (Ilex paraguariensis) leaves are popular for consumption as an infusion, which provides various health benefits due to its nutraceutical properties. Leaf samples oxidize after harvesting, requiring special handling to avoid DNA... more
Mate (Ilex paraguariensis) leaves are popular for consumption as an infusion, which provides various health benefits due to its nutraceutical properties. Leaf samples oxidize after harvesting, requiring special handling to avoid DNA damage or degradation by enzymatic or oxidative activities. The objectives of this work were to evaluate several methods for sample storage and DNA extraction to identify practical and efficient protocols to guarantee the DNA quantity and integrity for molecular studies of mate. Total DNA was extracted from fresh leaves and compared with DNA extracted from leaves stored in silica gel at room temperature for 14 days or in CTAB (cetyltrimethylammonium bromide) buffer. The leaves were cleaned with absorbent paper and stored in 50 mL Falcon tubes containing approximately 25 g of silica gel or in 2 mL Eppendorf tubes containing approximately 1 mL of CTAB buffer. Samples treated with silica gel were stored at room temperature for 14 days, and the ones with CTAB buffer were stored either at 4°C for 14 and 90 days or at room temperature for 90 days. The DNA was quantified using a Nanodrop spectrophotometer and agarose gel electrophoresis. DNA purity (with regard to the presence of enzyme inhibitors) was tested by PCR amplification of fragments of the plastid gene, trnL-trnF. Samples of
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Resumen La urbanización global y masiva de los territorios es el más importante fenómeno ecológico de la actualidad. Los estándares de crecimiento urbano son determinantes para la conservación de la diversidad biológica, y asimismo para... more
Resumen La urbanización global y masiva de los territorios es el más importante fenómeno ecológico de la actualidad. Los estándares de crecimiento urbano son determinantes para la conservación de la diversidad biológica, y asimismo para el grado de calidad de vida aceptable de las poblaciones urbanas. Contrariamente a la percepción de los biólogos y de otros académicos, de las ciudades como ambientes estériles y opuestos a la naturaleza, el reciente desarrollo de la ecología urbana, ciencia necesariamente interdisciplinaria, nos demuestra que ciudades son ecosistemas heterotróficos que necesitan ser planeados para que sus impactos en la biosfera sean disminuidos, y que en paralelo su capacidad de sostener la biodiversidad sea incrementada. Abstract The global and massive urbanization of territories is one of today's most important ecological phenomena. The standards used in urban growth are vital for the conservation of biological diversity, and also affects the provision of a reasonable quality of life for urban populations. Contrary to the perception held by many biologists and other academics, where cities are sterile environments and the opposite of natural, the recent development of urban ecology, a necessarily interdisciplinary science, shows that cities are heterotrophic ecosystems that need to be planned in a manner that reduces their impacts on the biosphere, and that in parallel increases their ability to sustain biodiversity.
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The genetic variability and genetic versatility of plants belonging to Poaceae provide morphophysiological responses that allow these individuals to adapt to environmental changes, especially in relation to soil moisture. Urochloa... more
The genetic variability and genetic versatility of plants belonging to Poaceae provide morphophysiological responses that allow these individuals to adapt to environmental changes, especially in relation to soil moisture. Urochloa plantaginea and U. platyphylla are grasses typical of dry environment, also found as weeds in rice fields, where there are high amounts of water in the soil. The objective of this work is to analyze the development of these two species in different environments, subjecting them to three different amounts of water in the soil. Morphological parameters were analyzed in order to verify and quantify which suffered alteration with respect to water variation. Caryopsis of the two species were collected in a commercial irrigated rice crop. Seeds were sown in pots containing a substrate-sand system, and housed in a greenhouse, where during the experiment the control of different moisture contents (shallow water table, 100% of field capacity and 50% of field capacity) took place. Weekly evaluations were carried out according to the parameters analyzed. The following parameters were evaluated: duration of the vegetative and reproductive life cycle, number of the inflorescences per plant, number of branches per inflorescence, number of spikelets per branch, number of seeds per plant, and dry mass production. The U. plantaginea cycle had shorter duration under the shallow water table, while for U. platyphylla the shorter duration was under the condition 50% of field capacity. Both species produced higher dry mass of shoots under the condition of 100% of field capacity. The main responses observed for both species, due to the flooding, were the change of the cycle, reduced dry matter production, and reduced seed production.
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Amorim, André M.A.; Amorim, Bruno S.; Amorim, Vivian O.; Andrade, Ivanilza M.; André, Thiago; Andreata, Regina H.P.; Andrino, Caroline O.; Angulo, María B.; Antar, Guilherme M.; Aona, Lidyanne Y.S.; Arana, Marcelo; Aranha Filho, João... more
Amorim, André M.A.; Amorim, Bruno S.; Amorim, Vivian O.; Andrade, Ivanilza M.; André, Thiago; Andreata, Regina H.P.; Andrino, Caroline O.; Angulo, María B.; Antar, Guilherme M.; Aona, Lidyanne Y.S.; Arana, Marcelo; Aranha Filho, João L.M.; Araújo, Andréa O.; Araújo, Camila C.; Araújo, Cintia A.T.; Araújo, Mário H.T.; Asprino, Renata C.; Assis, Francine C.; Assis, Leandro C.S.; Assis, Marta C.; Athayde Filho, Francisco; Athiê-Souza, Sarah M.; Azevedo, Michaele A.M.; Bacci, Lucas F.; Barbosa, Ariane R.; Barbosa, Camilo V.O.; Barbosa, Juliana F.; Barbosa, Maria R.V.; Barbosa-Silva, Rafael G.; Barboza, Gloria E.; Barcelos, Flávia R.B.; Barcelos, Laísa B.; Barreto, Kamilla L.; Bastos, Cid J.P.; Bastos, Cláudia A.; Benelli, Ada; Bernacci, Luís C.; Beyer, Maila; Bezerra, Andrea C.C.; Bigio, Narcísio C.; Biral, Leonardo; Bissoli, Vinícius F.; Bochorny, Thuane; Bohs, Lynn; Boldorini, Abril; Boldrini, Ilsi I.; Bolson, Mônica; Bonadeu, Francismeire; Bordin, Juçara; Bordon, Natali G.; Borges, Leonardo M.; Borges, Rafael A.X.; Borges, Rodrigo L.; Bortoluzzi, Roseli L.C.; Bove, Cláudia P.; Bovini, Massimo G.; Braga, João Marcelo A.; Branco, Suema; Brauner, Laiana M.; Braz, Denise M.; Bringel Jr., João B.A.; Brito, Antonio L.V.T.; Brito, Carolina R.; Brito, Eliete S.; Bruniera, Carla P.; Büneker, Henrique M.; Bünger, Mariana; Buril, Maria T.; Cabral, Andressa; Cabral, Elsa L.; Cabral, Fernanda N.; Caddah, Mayara K.; Caires, Claudenir S.; Calazans, Luana S.B.; Caldas, Diana K.D.; Calió, Maria F.; Calvo, Joel; Camargo, Rodrigo A.; Campos-Rocha, Antonio; Cândido, Elisa S.; Canestraro, Bianca K.; Canto-Dorow, Thais S.; Cardoso, André L.R.; Cardoso, Domingos B.O.S.; Cardoso, Leandro J.T.; Cardoso, Pedro H.; Carmo, Dimas M.; Carmo, João A.M.; Carneiro, Camila R.; Carneiro, Cláudia E.; Carneiro-Torres, Daniela S.; Carrijo, Tatiana T.; Carrión, Juan F.; Caruzo, Maria B.R.; Carvalho Sobrinho, Jefferson G.; Carvalho, Catarina S.; Carvalho, Dariane A.S.; Carvalho, Maria L.S.; Carvalho-Silva, Micheline; Castello, Ana C.D.; Castro, Márcia S.; Catenacci, Fernanda S.; Cavalcanti, Laise H.; Cavalheiro, Larissa; Cerqueira, Roberta M.; Chacon, Roberta G.; Chagas, Earl C.O.; Chautems, Alain; Chauveau, Olivier; Christ, Anderson L.; Christ, Jheniffer A.; Clark, Lynn G.; Coelho, Alexa A.O.P.; Coelho, Guilherme P.; Coelho, Rubens L.G.; Colletta, Gabriel D.; Colli-Silva, Matheus; Conceição, Adilva S.; Conceição, Tulio C.; Condack, João P.S.; Conde, Maíra L.G.; Contro, Fernanda L.; Cordeiro, Inês; Cordeiro, Luciana S.; Cordeiro, Wesley P.F.S.; Côrtes, Brazilian Flora 2020: Innovation and collaboration to meet Target 1 of the Global Strategy for Plant Conservation (GSPC) Rodriguésia 69(4): 1513-1527. 2018
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The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal,... more
The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to
decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this
overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is
well understood, so that it can be effectively conserved and used in a sustainable manner. Brazil hosts more
than 46,000 species of plants, algae and fungi, representing one of the most biodiverse countries on Earth, and
playing a key role in the GSPC. To meet the GSPC goals of Target 1 and facilitate access to plant diversity,
Brazil committed to preparing the List of Species of the Brazilian Flora (2008–2015) and the Brazilian Flora
2020 (2016–present). Managing all the information associated with such great biodiversity has proven to be an
extremely challenging task. Here, we synthesize the history of these projects, focusing on the multidisciplinary
and collaborative approach adopted to develop and manage the inclusion of all the knowledge generated though
digital information systems. We further describe the methods used, challenges faced, and strategies adopted, as
well as summarize advances to date and prospects for completing the Brazilian flora in 2020.
decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this
overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is
well understood, so that it can be effectively conserved and used in a sustainable manner. Brazil hosts more
than 46,000 species of plants, algae and fungi, representing one of the most biodiverse countries on Earth, and
playing a key role in the GSPC. To meet the GSPC goals of Target 1 and facilitate access to plant diversity,
Brazil committed to preparing the List of Species of the Brazilian Flora (2008–2015) and the Brazilian Flora
2020 (2016–present). Managing all the information associated with such great biodiversity has proven to be an
extremely challenging task. Here, we synthesize the history of these projects, focusing on the multidisciplinary
and collaborative approach adopted to develop and manage the inclusion of all the knowledge generated though
digital information systems. We further describe the methods used, challenges faced, and strategies adopted, as
well as summarize advances to date and prospects for completing the Brazilian flora in 2020.
Research Interests:
A vegetação nativa de Santa Maria, assim como em todo estado do Rio Grande do Sul, é composta por florestas e campos. Tendo em vista que os campos ainda são poucos conhecidos pela população, em sua real importância, foi escolhida... more
A vegetação nativa de Santa Maria, assim como em todo estado do Rio Grande do Sul, é composta por florestas e campos. Tendo em vista que os campos ainda são poucos conhecidos pela população, em sua real importância, foi escolhida para este estudo uma área de vegetação campestre para o levantamento da família Poaceae. O Morro da Pedra de Lagarto se localiza no Distrito de Santo Antão, ao norte do município de Santa Maria, RS. O estudo foi realizado no período de agosto de 2014 a setembro de 2015, através de expedições quinzenais, nas quais foram coletados espécimes na fase reprodutiva. Após a herborização, foi realizada a identificação das espécies em laboratório através de chaves, obras de referência, consultas a meio eletrônico e revisão do herbário SMDB. Ao todo, foram 58 espécies confirmadas, distribuídas em 33 gêneros e 13 tribos. Foi constatada a presença de uma espécie ameaçada de extinção, bem como espécies exóticas no local. Este trabalho apresenta uma listagem com todas as espécies coletadas no local, vouchers e fotos. Constatou-se que no morro da Pedra do Lagarto há uma grande diversidade em espécies nativas da família Poaceae, predominando espécies do Bioma Mata Atlântica.
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A floristic survey of the Asteraceae was carried out at the Pedra do Lagarto, Santa Maria, central region of Rio Grande do Sul state, Brazil. Field expeditions were conducted from August 2014 to September 2015. A total of 106 species... more
A floristic survey of the Asteraceae was carried out at the Pedra do Lagarto, Santa Maria, central region of Rio Grande
do Sul state, Brazil. Field expeditions were conducted from August 2014 to September 2015. A total of 106 species
were recorded, with 6 listed in the endangered species list of the state of Rio Grande do Sul: Moquiniastrum mollissimum(Malme) G. Sancho, Trixis pallidaLess, Calea clematideaBaker, Aldama megapotamica(Malme) Magenta &
Pirani, Chromolaena angusticeps(Malme) RM King & H. Rob., and Isostigma peucedanifolium(Spreng.) Less. This
paper presents a list of recorded species from this site
do Sul state, Brazil. Field expeditions were conducted from August 2014 to September 2015. A total of 106 species
were recorded, with 6 listed in the endangered species list of the state of Rio Grande do Sul: Moquiniastrum mollissimum(Malme) G. Sancho, Trixis pallidaLess, Calea clematideaBaker, Aldama megapotamica(Malme) Magenta &
Pirani, Chromolaena angusticeps(Malme) RM King & H. Rob., and Isostigma peucedanifolium(Spreng.) Less. This
paper presents a list of recorded species from this site
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A taxonomic revision of the Briza complex was carried out, including the genera accepted by past authors as subgenera or sections of Briza s.l. (Briza L., Calotheca Desv., Chascolytrum Desv., Lombardochloa Roseng. & B. R. Arrill.,... more
A taxonomic revision of the Briza complex was carried out, including the genera accepted by past authors as subgenera or
sections of Briza s.l. (Briza L., Calotheca Desv., Chascolytrum Desv., Lombardochloa Roseng. & B. R. Arrill., Microbriza Parodi ex
Nicora & R´ugolo, and Poidium Nees) as well as other related genera (Brizochloa V. Jir´asek & Chrtek, Erianthecium Parodi,
Gymnachne Parodi, and Rhombolytrum Link). As a result of the morphological analysis presented here, confirmed by other studies
with molecular data, Briza is accepted with three Eurasian species, Brizochloa is accepted with one species, and a new
circumscription for the genus Chascolytrum is proposed. This new circumscription includes all the accepted South American
species that were previously assigned to the other genera cited above. Descriptions and illustrations of three species and one variety
of Briza, one species of Brizochloa, and 22 species and two varieties of Chascolytrum are provided, as well as IUCN conservation
status for most species. A new status is proposed for Briza media f. caucasica Marcow.: Briza media var. caucasica (Marcow.) Essi,
Longhi-Wagner & Souza-Chies. The following name is newly transferred: Chascolytrum rufum var.sparsipilosum (Roseng., B. R. Arrill.
& Izag.) Essi, Longhi-Wagner & Souza-Chies [[ Briza rufa var. sparsipilosa Roseng., B. R. Arrill. & Izag.]. Keys for genera and species
are also provided. Lectotypifications are provided for Briza neesii D¨oll and Briza triloba Nees.
sections of Briza s.l. (Briza L., Calotheca Desv., Chascolytrum Desv., Lombardochloa Roseng. & B. R. Arrill., Microbriza Parodi ex
Nicora & R´ugolo, and Poidium Nees) as well as other related genera (Brizochloa V. Jir´asek & Chrtek, Erianthecium Parodi,
Gymnachne Parodi, and Rhombolytrum Link). As a result of the morphological analysis presented here, confirmed by other studies
with molecular data, Briza is accepted with three Eurasian species, Brizochloa is accepted with one species, and a new
circumscription for the genus Chascolytrum is proposed. This new circumscription includes all the accepted South American
species that were previously assigned to the other genera cited above. Descriptions and illustrations of three species and one variety
of Briza, one species of Brizochloa, and 22 species and two varieties of Chascolytrum are provided, as well as IUCN conservation
status for most species. A new status is proposed for Briza media f. caucasica Marcow.: Briza media var. caucasica (Marcow.) Essi,
Longhi-Wagner & Souza-Chies. The following name is newly transferred: Chascolytrum rufum var.sparsipilosum (Roseng., B. R. Arrill.
& Izag.) Essi, Longhi-Wagner & Souza-Chies [[ Briza rufa var. sparsipilosa Roseng., B. R. Arrill. & Izag.]. Keys for genera and species
are also provided. Lectotypifications are provided for Briza neesii D¨oll and Briza triloba Nees.
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Este artigo expõe um breve relato de dois projetos de extensão realizados no herbário SMDB, da Universidade Federal de Santa Maria, RS, Brasil. O referido herbário apresenta, atualmente, um acervo de 16.800 espécimes vegetais e de fungos.... more
Este artigo expõe um breve relato de dois projetos de extensão realizados no herbário SMDB, da Universidade Federal de Santa Maria, RS, Brasil. O referido herbário apresenta, atualmente, um acervo de 16.800 espécimes vegetais e de fungos. Representa a flora regional, incluindo espécies do Pampa e da Mata Atlântica. Um dos projetos desenvolvidos, constituiu-se em receber estudantes de ensino fundamental e médio, apresentando-se o herbário e sua importância no registro da biodiversidade e no auxílio a projetos de pesquisa e conservação da flora. Em dois anos foram recebidos 900 estudantes e 56 professores. Outro projeto dedicou-se à disponibilização de dados através da colaboração com o Projeto INCT-CRIA do Herbário Virtual de Plantas e Fungos do Brasil. Primeiramente, foram incluídos dados no sistema BRAHMS, e depois foram disponibilizados em rede. Em 2016, houve 305.219 registros de consulta aos dados disponibilizados. Os projetos possibilitaram a participação de diversos acadêmicos, que apresentaram seus resultados na Jornada Acadêmica da UFSM (JAI-UFSM).
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Th is paper presents a morphological analysis of the fl ower and fl oral trichomes of three rare species of Dyckia: Dyckia ibicuiensis, D. polyclada and D. racinae. Flowers at anthesis were collected from natural populations and subjected... more
Th is paper presents a morphological analysis of the fl ower and fl oral trichomes of three rare species of Dyckia: Dyckia ibicuiensis, D. polyclada and D. racinae. Flowers at anthesis were collected from natural populations and subjected to morphometric and microscopic analysis. Among the most representative features for Dyckia are: morphometrics of individual fl oral parts; the general confi guration of the androecium and gynoecium; the degree of fusion of the stigmatic lobes; the morphology of the ovules, especially in relation to the chalazal appendix; and the presence and constitution of peltate trichomes in the perianth, which exhibited a polymorphism not previously reported for Dyckia. Th e characters were eff ective at describing each species, proposing phylogenetic inferences and recognizing infrageneric groupings. We propose two species groups, which are consistent with previous hypotheses about the relationships among the species of the genus. Th e objective of this study was to provide fl oral morphological data useful for characterizing these three rare species, delimiting the genus and forming phylogenetic hypotheses.
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Article: Flower and floral trichome morphology of species of Dyckia Schult. f. (Bromeliaceae, Pitcairnioideae), and their
importance to species characterization and genus taxonomy
importance to species characterization and genus taxonomy
O presente trabalho teve como objetivo realizar o levantamento das espécies campestres da família Leguminosae no morro Pedra do Lagarto, distrito de Santo Antão, Santa Maria, Rio Grande do Sul, Brasil, a fim de contribuir para o... more
O presente trabalho teve como objetivo realizar o levantamento das espécies campestres da família Leguminosae no morro Pedra do Lagarto, distrito de Santo Antão, Santa Maria, Rio Grande do Sul, Brasil, a
fim de contribuir para o conhecimento da flora da região central do estado. Tal estudo se faz necessário devido à singularidade fitogeográfica da região de Santa Maria, que se encontra em uma região de tensão ecológica entre os biomas Pampa e Mata Atlântica. Por meio de coletas quinzenais, no período de agosto de 2014 a maio de 2016, foram confirmadas 27 espécies e 17 gêneros, sendo 20 espécies pertencentes à subfamília Faboideae Rudd e sete à Mimosoideae DC. Os gêneros com maior número de espécies são Mimosa L. (seis)
e Desmodium Desv. (cinco). Além da lista de espécies, este trabalho fornece dados fenológicos, fotografias e chaves analíticas para identificação dos táxons.
fim de contribuir para o conhecimento da flora da região central do estado. Tal estudo se faz necessário devido à singularidade fitogeográfica da região de Santa Maria, que se encontra em uma região de tensão ecológica entre os biomas Pampa e Mata Atlântica. Por meio de coletas quinzenais, no período de agosto de 2014 a maio de 2016, foram confirmadas 27 espécies e 17 gêneros, sendo 20 espécies pertencentes à subfamília Faboideae Rudd e sete à Mimosoideae DC. Os gêneros com maior número de espécies são Mimosa L. (seis)
e Desmodium Desv. (cinco). Além da lista de espécies, este trabalho fornece dados fenológicos, fotografias e chaves analíticas para identificação dos táxons.
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(Grassland Leguminosae of Universidade Federal de Santa Maria (UFSM), campus Palmeira das Missões, RS, Brazil). A floristic survey of grassland species of Leguminosae from the Universidade Federal de Santa Maria (UFSM)), campus Palmeira... more
(Grassland Leguminosae of Universidade Federal de Santa Maria (UFSM), campus Palmeira das Missões, RS, Brazil). A floristic survey of grassland species of Leguminosae from the Universidade Federal de Santa Maria (UFSM)), campus Palmeira das Missões was carried out. Weekly field collections, between October of 2010 and November of 2012, were conducted, and twenty-six species and seventeen genera were confirmed. From this twenty-two species are Papilionoideae, three species are Caesalpinioideae and one species is Mimosoideae. Among them, only four are alien species. Desmodium Desv. and Trifolium L. are the richest genera, with three species each one. Besides the species list, an analytical key for species identification is provided.
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A região norte do estado do Rio Grande do Sul vem apresentando uma série de problemas ambientais relacionados à degradação ambiental, inclusive à degradação de áreas protegidas por lei, as Áreas de Preservação Permanente. No intuito de... more
A região norte do estado do Rio Grande do Sul vem apresentando uma série de problemas ambientais relacionados à degradação ambiental, inclusive à degradação de áreas protegidas por lei, as Áreas de Preservação Permanente. No intuito de conscientizar a população de Palmeira das Missões e outros municípios da região norte do estado sobre a importância das Áreas de Preservação Permanente e sobre a importância da conservação e recuperação ambiental, foi realizado um projeto de educação ambiental envolvendo escolas públicas de Ensino Básico. Inicialmente, foi realizada uma revisão histórica da questão ambiental no Brasil e no mudo e das alterações que o Código Florestal Brasileiro vem passando, e a seguir foram planejadas diferentes atividades de educação ambiental, as quais foram executadas em datas com simbolismo ambiental importante. Foram realizados seminários, trilhas ecológicas, plantio de árvores nativas e jogos didáticos sobre Áreas de Preservação Permanente. Houve a participação...
Genus Paspalum L. comprises approximately 400 species worldwide and about 220 in Brazil. Paspalum is ecologically and economically important, and has been very useful as pasture. Traditionally, taxonomists use informal groups, most of... more
Genus Paspalum L. comprises approximately 400 species worldwide and about 220 in Brazil. Paspalum is ecologically and economically important, and has been very useful as pasture. Traditionally, taxonomists use informal groups, most of which described by Agnes Chase in 1929. Some groups present a problematic circumscrip-tion, this is the case of the Linearia and Notata groups. This work uses a phylogenetic approach to study these groups and related species. DNA sequences from ITS of nuclear rRNA, from chlo-roplast intergenic spacer psbA-trnH and chloro-plast trnL intron were used to perform the analyses. The informal groups studied were considered highly artificial, being the representatives from several informal groups splitted throughout the trees. Only a small core of species from Notata group could be accepted as a good formal clade.
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The present work intends to clarify the phylogenetic relationships among the species of Paspalum L. belonging to the informal groups Notata/Linearia and Dilatata, and to raise some preliminary hypotheses on the phylogeny of the genus as a... more
The present work intends to clarify the phylogenetic relationships among the species of Paspalum L. belonging to the informal groups Notata/Linearia and Dilatata, and to raise some preliminary hypotheses on the phylogeny of the genus as a whole. A combined dataset including morphological and molecular characters was used to analyze 28 species of Paspalum plus some representatives of related genera of the tribe Paniceae. Analyses were performed using both parsimony and maximum likelihood. The monophyly of Paspalum is not supported nor contradicted. The circumscription of informal groups of Paspalum is discussed, as well as the cladistic treatment of allopolyploid taxa, especially those comprising the Dilatata group. The relationships of members of the Dilatata with their putative progenitors is confirmed, but the monophyly of the group as a whole is not. A close relationship between P. dilatatum Poir. and P. lividum Trin. ex Schltdl. is shown. Our analysis is consistent with the monophyly of a group comprising Notata+Linearia, with a monophyletic Notata group nested within it. The delimitation of the core Notata is proposed by including P. conduplicatum Canto-Dorow, Valls and Longhi-Wagner, P. notatum Flu¨gge´, P. minus E. Fourn., P. pumilum Nees and P. subciliatum Chase.
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Foi realizado o levantamento de Poaceae (Gramineae) no Centro de Educação Superior do Norte do Rio Grande do Sul, campus de Palmeira das Missões, situado no norte do Rio Grande do Sul. Foram realizadas coletas semanais e quinzenais,... more
Foi realizado o levantamento de Poaceae (Gramineae) no Centro de Educação Superior do Norte do Rio
Grande do Sul, campus de Palmeira das Missões, situado no norte do Rio Grande do Sul. Foram realizadas coletas semanais e
quinzenais, abrangendo todas as formações vegetais. Foi confirmada a ocorrência de 126 espécies, distribuídas em 54 gêneros e
oito subfamílias. Panicoideae (76 espécies) é a subfamília com maior diversidade específica, seguida de Pooideae (22), Chloridoideae (19), Aristidoideae (quatro) e Ehrhartoideae (duas). Bambusoideae, Danthonioideae e Pharoideae estão representadas
por apenas uma espécie. Paspalum L. (19 espécies), Eragrostis Wolf (nove), Andropogon L. (seis) e Chascolytrum Desv. (seis)
são os gêneros mais representativos. Do total, 109 espécies (86,5%) são nativas ou naturalizadas e 17 (13,5%) são exóticas.
Destaca-se a ocorrência de Canastra aristella(Döll) Zuloaga & Morrone no campus, espécie criticamente ameaçada de extinção no Rio Grande do Sul. Este trabalho apresenta a lista das espécies confirmadas para a área, chaves para a identificação dos
gêneros e das espécies, além de ilustrações de importância taxonômica.
Grande do Sul, campus de Palmeira das Missões, situado no norte do Rio Grande do Sul. Foram realizadas coletas semanais e
quinzenais, abrangendo todas as formações vegetais. Foi confirmada a ocorrência de 126 espécies, distribuídas em 54 gêneros e
oito subfamílias. Panicoideae (76 espécies) é a subfamília com maior diversidade específica, seguida de Pooideae (22), Chloridoideae (19), Aristidoideae (quatro) e Ehrhartoideae (duas). Bambusoideae, Danthonioideae e Pharoideae estão representadas
por apenas uma espécie. Paspalum L. (19 espécies), Eragrostis Wolf (nove), Andropogon L. (seis) e Chascolytrum Desv. (seis)
são os gêneros mais representativos. Do total, 109 espécies (86,5%) são nativas ou naturalizadas e 17 (13,5%) são exóticas.
Destaca-se a ocorrência de Canastra aristella(Döll) Zuloaga & Morrone no campus, espécie criticamente ameaçada de extinção no Rio Grande do Sul. Este trabalho apresenta a lista das espécies confirmadas para a área, chaves para a identificação dos
gêneros e das espécies, além de ilustrações de importância taxonômica.
Research Interests:
RESUMO:(Levantamento florístico de Asteraceae em Palmeira das Missões, Rio Grande do Sul, Brasil). Foi realizado o levantamento das espécies de Asteraceae no Centro de Educação Superior do Norte do Rio Grande do Sul, campusde Palmeira... more
RESUMO:(Levantamento florístico de Asteraceae em Palmeira das Missões, Rio Grande do Sul, Brasil). Foi realizado o
levantamento das espécies de Asteraceae no Centro de Educação Superior do Norte do Rio Grande do Sul, campusde Palmeira
das Missões, situado no norte do estado do Rio Grande do Sul, Brasil. Foram realizadas coletas semanais (primavera e verão)
e quinzenais (outono e inverno), utilizando-se o método de caminhamento, abrangendo todas as formações vegetais da área.
Foi confirmada a ocorrência de 83 espécies, pertencentes a 56 gêneros e 15 tribos. Este trabalho apresenta a lista das espécies
confirmadas para a área, chaves para a identificação, além de fotos de espécies a campo.
Palavras-chave:biodiversidade, Compositae, campos, inventário florístico.
levantamento das espécies de Asteraceae no Centro de Educação Superior do Norte do Rio Grande do Sul, campusde Palmeira
das Missões, situado no norte do estado do Rio Grande do Sul, Brasil. Foram realizadas coletas semanais (primavera e verão)
e quinzenais (outono e inverno), utilizando-se o método de caminhamento, abrangendo todas as formações vegetais da área.
Foi confirmada a ocorrência de 83 espécies, pertencentes a 56 gêneros e 15 tribos. Este trabalho apresenta a lista das espécies
confirmadas para a área, chaves para a identificação, além de fotos de espécies a campo.
Palavras-chave:biodiversidade, Compositae, campos, inventário florístico.
Research Interests:
Chascolytrum bulbosum occurs in shrubby fields with granite outcrops in southern South America. It is considered endangered, due to habitat loss and overgrazing. However, no population genetic studies nor conservation management plan for... more
Chascolytrum bulbosum occurs in shrubby fields with granite outcrops in southern South America. It is considered endangered, due to habitat loss and overgrazing. However, no population genetic studies nor conservation management plan for the species is currently available. Therefore, Amplified Fragment Length Polymorphism (AFLP) markers were used to assess genetic diversity and infer population structure of 13 natural populations of C. bulbosum distributed across southern Brazil. A total of 651 AFLP fragments were produced, of which 98.2% were polymorphic. Genetic diversity was considered moderate (H ¼ 0.150), with genetic differentiation being moderate to high (G ST ¼ 0.228; F ST ¼ 0.341). Analyses enabled the separation of individuals into two clusters, although AMOVA results suggest only 13.2% variation between them. Estimates of gene flow by migration (Nm) were high in all analyses. Results suggest that no severe bottleneck has occurred recently in populations analyzed in this study. As gene flow occurs broadly through the geographical range of species found in Rio Grande do Sul, we suggest the stimulation of in situ rather than ex situ conservation, and priority populations for conservation of C. bulbosum are indicated.
Research Interests:
BrizaL. (Poaceae, Pooideae, Poeae) is a genus with a controversial circumscription, being either considered sensu lato, including Eurasian and South American species (e.g., Longhi-Wagner, 1987), or sensu stricto, including only four... more
BrizaL. (Poaceae, Pooideae, Poeae) is a
genus with a controversial circumscription, being
either considered sensu lato, including Eurasian and
South American species (e.g., Longhi-Wagner,
1987), or sensu stricto, including only four Eurasian
species and being considered closely related to the
South American species, forming theBrizacomplex
(Matthei, 1975). According to recent phylogenetic
analysis, Brizashould be accepted sensu stricto,
with four Eurasian species, as proposed by Matthei
(1975) and other authors. The American species,
which were previously published underBrizas.l. or
under the genera Calotheca Desv.,Chascolytrum
Desv., Erianthecium Parodi, Gymnachne Parodi,
LombardochloaRoseng. & B. R. Arrill.,Microbriza
Parodi ex Nicora & Ru´golo, PoidiumNees, and
Rhombolytrum Link, should be included within
Chascolytrum, the oldest generic name published
for the American species of the complex. As a result,
the following 13 new combinations are proposed in
Chascolytrum: C. ambiguum(Hack.) Essi, LonghiWagner & Souza-Chies,C. bidentatum(Roseng., B.
R. Arrill. & Izag.) Essi, Longhi-Wagner & SouzaChies, C. brachychaetum (Ekman) Essi, LonghiWagner & Souza-Chies,C. brasiliense (Nees ex
Steud.) Essi, Longhi-Wagner & Souza-Chies, C.
brizoides (Lam.) Essi, Longhi-Wagner & SouzaChies,C. bulbosum(Parodi) Essi, Longhi-Wagner
& Souza-Chies,C. calotheca(Trin.) Essi, LonghiWagner & Souza-Chies,C. itatiaiae(Ekman) Essi,
Longhi-Wagner & Souza-Chies, C. koelerioides
(Trin.) Essi, Longhi-Wagner & Souza-Chies, C.
monandrum(Hack.) Essi, Longhi-Wagner & SouzaChies, C. poomorphum (J. Presl) Essi, LonghiWagner & Souza-Chies,C. rhomboideum (Link)
Essi, Longhi-Wagner & Souza-Chies, andC. uniolae
(Nees) Essi, Longhi-Wagner & Souza-Chies. The
namesPoa koelerioidesTrin.,Poa tumidulaSteud.,
Poidium brasilienseNees ex Steud., andRhombolytrum berteroanum E. Desv. are lectotypified.
Key words: Brizacomplex,Chascolytrum, Eurasia, Gramineae, South America
genus with a controversial circumscription, being
either considered sensu lato, including Eurasian and
South American species (e.g., Longhi-Wagner,
1987), or sensu stricto, including only four Eurasian
species and being considered closely related to the
South American species, forming theBrizacomplex
(Matthei, 1975). According to recent phylogenetic
analysis, Brizashould be accepted sensu stricto,
with four Eurasian species, as proposed by Matthei
(1975) and other authors. The American species,
which were previously published underBrizas.l. or
under the genera Calotheca Desv.,Chascolytrum
Desv., Erianthecium Parodi, Gymnachne Parodi,
LombardochloaRoseng. & B. R. Arrill.,Microbriza
Parodi ex Nicora & Ru´golo, PoidiumNees, and
Rhombolytrum Link, should be included within
Chascolytrum, the oldest generic name published
for the American species of the complex. As a result,
the following 13 new combinations are proposed in
Chascolytrum: C. ambiguum(Hack.) Essi, LonghiWagner & Souza-Chies,C. bidentatum(Roseng., B.
R. Arrill. & Izag.) Essi, Longhi-Wagner & SouzaChies, C. brachychaetum (Ekman) Essi, LonghiWagner & Souza-Chies,C. brasiliense (Nees ex
Steud.) Essi, Longhi-Wagner & Souza-Chies, C.
brizoides (Lam.) Essi, Longhi-Wagner & SouzaChies,C. bulbosum(Parodi) Essi, Longhi-Wagner
& Souza-Chies,C. calotheca(Trin.) Essi, LonghiWagner & Souza-Chies,C. itatiaiae(Ekman) Essi,
Longhi-Wagner & Souza-Chies, C. koelerioides
(Trin.) Essi, Longhi-Wagner & Souza-Chies, C.
monandrum(Hack.) Essi, Longhi-Wagner & SouzaChies, C. poomorphum (J. Presl) Essi, LonghiWagner & Souza-Chies,C. rhomboideum (Link)
Essi, Longhi-Wagner & Souza-Chies, andC. uniolae
(Nees) Essi, Longhi-Wagner & Souza-Chies. The
namesPoa koelerioidesTrin.,Poa tumidulaSteud.,
Poidium brasilienseNees ex Steud., andRhombolytrum berteroanum E. Desv. are lectotypified.
Key words: Brizacomplex,Chascolytrum, Eurasia, Gramineae, South America
Research Interests:
A phylogenetic analysis of the Briza Complex was carried out using three DNA regions (ITS, GBSSI and trnL–trnL–trnF, a total of 2980 bp). The searches were performed by three distinct phylogenetic methods, using plastid and nuclear data... more
A phylogenetic analysis of the Briza Complex was carried out using three DNA regions (ITS, GBSSI and trnL–trnL–trnF, a total of 2980 bp). The searches were performed by three distinct phylogenetic methods, using plastid and nuclear data in separate matrices. All methods produced similar trees per matrix. However there were conflicts when trees resulting from distinct datasets were compared. Phylogenetic relationships were found did not completely fit any circumscription previously proposed for the complex. The early divergence of the Eurasiatic species (B. media, B. maxima and B. minor), and the monophyly of the South American group (including Erianthecium, Rhombolytrum and Gymnachne) support Briza L. sensu stricto, and a single genus for the American group. Briza sensu lato is not supported in most trees, and the American genera cannot be split due to unresolved polytomies. Conflict between chloroplast and nuclear data suggests past reticulation events, although lineage sorting or ITS paralogy cannot be ruled out. Polytomies in the American group may indicate rapid species radiation.
Research Interests:
ABSTRACT. Two new species and one new variety of Chascolytrum Desv. (Poaceae) are described and illustrated. Chascolytrum latifoliumEssi, Souza-Chies & Longhi-Wagner andC. juergensiivar.angustilemma Essi, Souza-Chies & Longhi-Wagner occur... more
ABSTRACT. Two new species and one new variety of
Chascolytrum Desv. (Poaceae) are described and
illustrated. Chascolytrum latifoliumEssi, Souza-Chies
& Longhi-Wagner andC. juergensiivar.angustilemma
Essi, Souza-Chies & Longhi-Wagner occur in the
southern Brazilian highlands, while C. altimontanum
Essi, Souza-Chies & Longhi-Wagner occurs in the
Bolivian highlands.Chascolytrum latifoliumis related
to C. subaristatum(Lam.) Desv., but differs mainly by
the wider leaf blades and by some characteristics of the
palea. Chascolytrum altimontanumis related to C.
paleapiliferum(Parodi) Matthei and C. subaristatum,
the main differences being the presence of flattened
trichomes at the lemma base and the shape of the
spikelets. Specimens of all these new taxa were
included in a parallel molecular analysis, with the
results supporting the new taxa as genetically divergent
from the closest morphologically related species. In
addition, Briza juergensii Hack. is transferred to
Chascolytrumfor the new combination C. juergensii
(Hack.) Essi, Souza-Chies & Longhi-Wagner
Chascolytrum Desv. (Poaceae) are described and
illustrated. Chascolytrum latifoliumEssi, Souza-Chies
& Longhi-Wagner andC. juergensiivar.angustilemma
Essi, Souza-Chies & Longhi-Wagner occur in the
southern Brazilian highlands, while C. altimontanum
Essi, Souza-Chies & Longhi-Wagner occurs in the
Bolivian highlands.Chascolytrum latifoliumis related
to C. subaristatum(Lam.) Desv., but differs mainly by
the wider leaf blades and by some characteristics of the
palea. Chascolytrum altimontanumis related to C.
paleapiliferum(Parodi) Matthei and C. subaristatum,
the main differences being the presence of flattened
trichomes at the lemma base and the shape of the
spikelets. Specimens of all these new taxa were
included in a parallel molecular analysis, with the
results supporting the new taxa as genetically divergent
from the closest morphologically related species. In
addition, Briza juergensii Hack. is transferred to
Chascolytrumfor the new combination C. juergensii
(Hack.) Essi, Souza-Chies & Longhi-Wagner
Research Interests:
Forest and grassland vegetations in the middle course of Toropi River in central Rio Grande do Sul State (Brazil) are investigated, confirming the existence of many endemic, rare and/or endangered species. Given the importance of this... more
Forest and grassland vegetations in the middle course of Toropi River in central Rio Grande do Sul State
(Brazil) are investigated, confirming the existence of many endemic, rare and/or endangered species. Given
the importance of this floristic and natural heritage, it is concluded that the construction of hydroelectric
dams in the region demands the creation of a conservation area to preserve the remaining ecosystems.
Keywords: Brazil, Butia witeckii, Dyckia selloa, Dyckia strehliana, Echinopsis oxygona, endemic species,
Guassupi Falls, Guassupi River, Oxalis subvillosa, palm grove, Parodia glaucina, Parodia horstii, Parodia
linkii, Parodia magnifica, Parodia oxycostata, Paspalum rawitscheri, Picramnia parvifolia, Rio Grande do
Sul State, Toropi River, Tillandsia toropiensis, Trithrinax brasiliensis.
(Brazil) are investigated, confirming the existence of many endemic, rare and/or endangered species. Given
the importance of this floristic and natural heritage, it is concluded that the construction of hydroelectric
dams in the region demands the creation of a conservation area to preserve the remaining ecosystems.
Keywords: Brazil, Butia witeckii, Dyckia selloa, Dyckia strehliana, Echinopsis oxygona, endemic species,
Guassupi Falls, Guassupi River, Oxalis subvillosa, palm grove, Parodia glaucina, Parodia horstii, Parodia
linkii, Parodia magnifica, Parodia oxycostata, Paspalum rawitscheri, Picramnia parvifolia, Rio Grande do
Sul State, Toropi River, Tillandsia toropiensis, Trithrinax brasiliensis.