Acta Botanica Brasilica最新文献_第7页

A new species of Blechnum L. (Blechnaceae, Polypodiopsida) from central-western Brazil, with an updated key to the species in the country 文章题目巴西中西部蓝藻属一新种(蓝藻科，水蛭科)及其更新的巴西种检索表

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/1677-941x-abb-2022-0147

V. Dittrich, A. Salino, A. L. Gasper

引用次数: 0

Angiosperm pollen grains in sedimentary profiles from two Brazilian Atlantic rainforests, northernmost coastal plain from Rio Grande do Sul, southern Brazil. Part II 巴西南部南里奥格兰德州最北端海岸平原两个巴西大西洋雨林沉积剖面中的被子植物花粉粒。第二部分

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0258

L. Roth, M. Lorscheitter

{"title":"Angiosperm pollen grains in sedimentary profiles from two Brazilian Atlantic rainforests, northernmost coastal plain from Rio Grande do Sul, southern Brazil. Part II","authors":"L. Roth, M. Lorscheitter","doi":"10.1590/0102-33062021abb0258","DOIUrl":"https://doi.org/10.1590/0102-33062021abb0258","url":null,"abstract":"The state of Rio Grande do Sul (RS) is located in the extreme south of Brazil, within a transition region between the tropical and subtropical zones of South America that has been frequently affected by fluctuations in climate and vegetation over the last millennia. Palynomorphs preserved in sediments have provided excellent study material for paleoenvironmental reconstitutions of this region, as they reveal the source organisms and their respective environments over geological time. The present study was conducted to provide additional palynological reference material preserved in Quaternary sediments from the RS coastal plain for paleoenvironmental reconstruction studies. Here, we present taxonomic descriptions of pollen from 29 angiosperm taxa extracted along two Quaternary sedimentary profiles: the Pirataba forest profile (29° 15’ S 49° 51’W) and the Faxinal forest profile (29° 21’ S 49° 45’ W), Torres municipality, in the extreme north of the coastal plain of RS. Ecological data and pollen photomicrographs accompany the taxonomic descriptions. This reference material, together with the other palynomorphs found in the two sedimentary profiles, was the basis for our study of paleoenvironments from the last millennia in southern Brazil, according to the dynamics of climate and vegetation.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"216 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79644313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of distyly breakdown in Palicoureeae Robbr. & Manen and Psychotrieae Cham. & Schltdl. (Rubiaceae)

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0242

Ebenézer B. Rodrigues, H. Consolaro, R. Pérez-Barrales, P. Oliveira

引用次数: 0

Development, structure, and secretion of leaf colleters in Clusia criuva Cambess. subsp. criuva (Clusiaceae) 荆芥叶片收集体的发育、结构和分泌。无性系种群。criuva(藤黄科)

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0103

Roberta Silva Teixeira, D. I. Rocha, J. R. Gonçalves, V. C. Dalvi

引用次数: 1

Do phytoplankton and epiphyton communities differ between organic and conventional rice fields? 有机稻田和常规稻田的浮游植物和附生植物群落是否不同?

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0234

A. P. V. Cassol, R. Zanella, L. C. Torgan

{"title":"Do phytoplankton and epiphyton communities differ between organic and conventional rice fields?","authors":"A. P. V. Cassol, R. Zanella, L. C. Torgan","doi":"10.1590/0102-33062021abb0234","DOIUrl":"https://doi.org/10.1590/0102-33062021abb0234","url":null,"abstract":"This study aimed to determine if there are any differences in the attributes and composition of the phytoplankton and epiphyton communities between organic (OF) and conventional (CF) rice fields. We also strove to identify if there were any variations in these communities by comparing samples taken from two different periods (12 and 35 days) after the application of the herbicide clomazone and penoxsulam in CF. The farms are located in the Pampa Biome, Southern Brazil. Phytoplankton samples from the subsurface water and epiphyton samples from the rice stems were analyzed using the Utermöhl method. The CF and OF had distinct environmental conditions (pH, conductivity, and turbidity values), and the residual concentration of the herbicides decreased over time. There were no significant differences in epiphyton and phytoplankton density, or in phytoplankton richness, between the rice fields; only the epiphyton richness and taxonomic composition showed differences between the rice fields. Cyanobacteria and Chlorophyceae comprised a large proportion of the epiphytic density in CF and OF, respectively. However, Bacillariophyceae and Chlorophyceae had greater phytoplankton densities in CF and OF, respectively. The taxonomic composition of communities should be considered an effective tool to show the differences between the two cultivation systems.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"134 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77374842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of baseline firewood consumption for domestic cooking in low-income rural households in Bahia, Brazil 巴西巴伊亚州低收入农村家庭家庭做饭用基准柴火消费量的评估

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0275

A. Gioda, Renata Everett Valladares, Ivo Ian Leão Teixeira, M. D. A. Araújo Júnior, C. Massone

引用次数: 1

Tree species of the Araucaria Mixed Forest: which, how many and how threatened are they? Araucaria混交林树种:哪些，有多少，受威胁程度如何?

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0021

Andressa Zanella, F. T. Brum, Ana Carolina Petisco-Souza, Giulia Fischer Maccori, M. B. Carlucci

引用次数: 2

Penicillium gercinae and Penicillium stangiae (Eurotiomycetes, Ascomycota), two new species from soil in Brazil 葡萄青霉和葡萄青霉(欧洲菌类，子囊菌科):巴西土壤中发现的两新种

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062022abb0006

A. L. Alves, Ana Carla da Silva Santos, R. N. Barbosa, C. Souza-Motta, R. Melo, P. Tiago

{"title":"Penicillium gercinae and Penicillium stangiae (Eurotiomycetes, Ascomycota), two new species from soil in Brazil","authors":"A. L. Alves, Ana Carla da Silva Santos, R. N. Barbosa, C. Souza-Motta, R. Melo, P. Tiago","doi":"10.1590/0102-33062022abb0006","DOIUrl":"https://doi.org/10.1590/0102-33062022abb0006","url":null,"abstract":"Two new Penicillium species are reported from soil of an agroforestry system and an Atlantic Rainforest fragment in Pernambuco, Northeast Brazil. Using a polyphasic approach, combining partial β -tubulin ( BenA ), calmodulin ( CaM ), internal transcribed spacer (ITS), and RNA polymerase II second largest subunit ( RPB2 ) gene sequences and morphological characters, Penicillium gercinae sp. nov. (section Ramigena , series Georgiensia ) , and Penicillium stangiae sp. nov. (section Lanata-Divaricata , series Dalearum ) are described. Descriptions based on morphological features are provided. Penicillium gercinae is phylogenetically closely related to P. georgiense ; however, P. gercinae does not grow on Czapek yeast extract (CYA) and has monoverticillate and biverticillate conidiophores. Penicillium stangiae is phylogenetically closely related to P. penarojense and P. vanderhammenii . As diagnostic features, P. stangiae had slower growth on CYA (28-30 mm in 7 days) and on DG18 (6-7 mm in 7 days) and lacked the production of acid on creatine agar. This research contributes to the expansion of knowledge on the taxonomy and diversity of Penicillium species in Brazil.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"14 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80582275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key abiotic parameters for the management of the richness of bryolichenic communities in bogs of North Patagonia (Chile) 智利北巴塔哥尼亚沼泽苔藓苔藓群落丰富度管理的关键非生物参数

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0190

C. León, Alfonso Benítez-Mora

引用次数: 2

Reconstruction of the evolutionary biogeography reveals the origin and diversification of Arisaema (Araceae) 天南星科天南星起源与多样性的进化生物地理学重建

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0253

V. T. Tran, Tuan Phuong Nguyen Hoang, T. Croat, Zheng-xue Ma, Bing-Guang Liu, V. D. Nguyen, Chi‐Toan Le

引用次数: 1