Acta Botanica Brasilica最新文献_第6页

Passiflora purii (Passifloraceae), a new species in honor of the originating peoples of Serra da Mantiqueira, Southeastern Brazil 西番莲(Passiflora purii)，一新种，以纪念巴西东南部Serra da Mantiqueira的原产民族

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/1677-941x-abb-2022-0122

A. C. Mezzonato-Pires, Leonardo Moreira Campos Lima, A. P. Faria

引用次数: 1

Effect of woody plant removal in herb-subshrub communities in preserved and disturbed Brazilian Chaco areas 巴西查科保护区和受干扰地区草本-亚灌木群落木本植物去除效果

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062020abb0531

F. J. Kochanovski, G. A. Damasceno-Júnior, Â. L. Sartori

{"title":"Effect of woody plant removal in herb-subshrub communities in preserved and disturbed Brazilian Chaco areas","authors":"F. J. Kochanovski, G. A. Damasceno-Júnior, Â. L. Sartori","doi":"10.1590/0102-33062020abb0531","DOIUrl":"https://doi.org/10.1590/0102-33062020abb0531","url":null,"abstract":"The impacts caused on Chaco plant communities by the removal of woody species, together with the effects on the composition and functional structure of herbaceous plants, are still unknown. Therefore, this study aimed to assess the effects of anthropization on herb-subshrub communities in preserved and disturbed Chaco areas. Specifically, we examined differences and similarities in species diversity, composition and proportion of life forms in eight areas of Brazilian Chaco. Samples were taken from herb-subshrub communities using 800 1x1m² plots located in disturbed and preserved areas. Among 130 recorded species, 46 were exclusive to disturbed areas. The composition of species differed between preserved and disturbed areas (PERMANOVA; p = 0.001). PCoA ordination analysis showed greater aggregation of the plots in disturbed areas than in preserved areas. In preserved areas, an analysis of indicator species showed Hemicryptophytes species as the most representative life form. In disturbed areas, the proportion of life forms among indicator species was Hemicryptophytes, followed by Therophytes and Chamaephytes. Our study shows evidence that alterations in species composition, structure, and diversity, as well as sets of indicator species, occur in herb-subshrub communities. The removal of trees and bushes leads to a new configuration of this component in Chaco environments.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"58 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79318182","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

Agalinis marianae (Orobanchaceae), a new endangered species endemic to the Quadrilátero Ferrífero, Minas Gerais, Brazil 巴西米纳斯吉拉斯州Quadrilátero Ferrífero特有的一种濒危新种——马兰花

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/1677-941x-abb-2021-0318

V. C. Souza, F. D. Gontijo, T. T. Dornas, G. Colletta, A. Scatigna, M. N. Moura

{"title":"Agalinis marianae (Orobanchaceae), a new endangered species endemic to the Quadrilátero Ferrífero, Minas Gerais, Brazil","authors":"V. C. Souza, F. D. Gontijo, T. T. Dornas, G. Colletta, A. Scatigna, M. N. Moura","doi":"10.1590/1677-941x-abb-2021-0318","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2021-0318","url":null,"abstract":"The Quadrilátero Ferrífero (Iron Quadrangle [IQ]), in Minas Gerais, Brazil, exhibits high geological and geomorphological diversity, reflected by its high heterogeneity of vegetation. Its rock outcrops, particularly ironstone, harbor endemic-rich plant communities and contribute substantially to the biodiversity of the biomes they are embedded within the Atlantic Rainforest and Cerrado region. The aim of this study was determining the distribution, phenology and state of conservation of one new species for science with occurrence in the Quadrilátero Ferrífero. Random walks were carried out in the areas of potential occurrence of the species and individuals were collected to allow description. The plant species was identified and categorized as being new to science and known only from this location: Agalinis marianae (Orobanchaceae). This new species is morphologically similar to A. itambensis but can be recognized by the smaller pedicels and the shape of the corolla. The distinct geographic distribution of these species is an additional factor that supports this separation. Here, we describe and illustrate A. marianae , and provide notes on its distribution, habitat, phenology, and conservation status. We also present a key to the species of Agalinis from Minas Gerais.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75138138","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

Are we ready to restore South Brazilian grasslands? Plant material and legal requirements for restoration and plant production 我们准备好恢复巴西南部草原了吗?修复和植物生产的植物材料和法律要求

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0155

R. G. Rolim, M. F. Rosenfield, G. Overbeck

{"title":"Are we ready to restore South Brazilian grasslands? Plant material and legal requirements for restoration and plant production","authors":"R. G. Rolim, M. F. Rosenfield, G. Overbeck","doi":"10.1590/0102-33062021abb0155","DOIUrl":"https://doi.org/10.1590/0102-33062021abb0155","url":null,"abstract":"The need for grassland restoration in the State of Rio Grande do Sul (RS), Brazil, has become evident in the last two decades, when more than 1 million hectares were converted to other uses only in the Pampa region. Since then, studies have started to verify the most suitable ways to restore subtropical grasslands. Around the world, species introduction is one of the principal restoration techniques. We investigated the availability of seedlings and seeds of native grassland species in the local market and the legal framework regarding the restoration of grassland vegetation in RS. We found, in total, only seven companies that sold seedlings or seeds of nine native species from grasslands, a very limited number given the great biodiversity of South Brazilian grasslands. In addition to that, we found no criteria and procedures for grassland conversion or obligatory replacement established in legal norms for grasslands to Pampa region, as there are for forest vegetation. Without legal requirement, a market for seeds and seedlings likely will not develop and, without a market, there will be no producers, and restoration will remain limited. Our results support the need to create initiates and legislation with basic guidelines for the grassland conversion and restoration in RS.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87773973","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: 4

Post-fire effects on bryophytes in High-Altitude Fields 火灾后对高原苔藓植物的影响

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0250

Mayara Bernardino Wienskoski, N. D. D. Santos

{"title":"Post-fire effects on bryophytes in High-Altitude Fields","authors":"Mayara Bernardino Wienskoski, N. D. D. Santos","doi":"10.1590/0102-33062021abb0250","DOIUrl":"https://doi.org/10.1590/0102-33062021abb0250","url":null,"abstract":"High-Altitude Fields are ecosystems with high bryophyte abundances and diversities. One of the principal threats to these ecosystems are wildfires, which mainly affect terricolous species. Chronosequence studies can aid in understanding post-fire effects on bryophytes. We studied terricolous assemblages of bryophytes in the High-Altitude Fields of Itatiaia National Park (INP) by establishing three 20x1 m transects in five areas: three areas of a post-fire chronosequence (treatments 2017, 2007, and 2001) and two control areas. We analyzed the species richness, floristic composition, life-forms, and floristic similarities of those transects, identifying 27 species of mosses (18 genera; 11 families) and 26 species of liverworts (20 genera; 16 families). Ditrichaceae was the principal moss family and Cephaloziellaceae the principal liverwort family. The life-forms encountered were turf (43 %), weft (38 %), thalloid (10 %), and mat (9 %). Turf predominated among mosses (85 %), and weft among liverworts (62 %). Species richness and floristic compositions varied among the post-fire gradients. The grouping dendrogram and ordination diagram evidenced greater similarity among transects within the same area. However, there was no evident gradient of floristic composition along the post-fire gradient, and further studies will be needed to quantify environmental gradients and their influences on bryophyte composition","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"5 1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78402254","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: 3

Biomass Allocation of Xanthium strumarium L.: A key factor for invasive success at high elevation 苍耳菌生物量分配:高海拔入侵成功的关键因素

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0272

Rafi Ullah, N. Khan, S. Shaukat

引用次数: 0

A higher altitude enclave of humid forest in the semi-arid of Brazil holds a diversity of conidial fungi on leaf-litter 在巴西半干旱的潮湿森林的高海拔飞地中，落叶上有多种分生孢子真菌

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/1677-941x-abb-2022-0031

M. A. Barbosa, J. Prazeres, E. Malosso

引用次数: 1

Reconstruction of the evolutionary biogeography reveals the origins of Alpinia Roxb. (Zingiberaceae): A case of “out-of-Asia” migration to the Southern Hemisphere 进化生物地理学的重建揭示了龙葵的起源。(姜科):“亚洲外”向南半球迁移的一个例子

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/0102-33062021abb0255

Chi‐Toan Le, Thi Bich Do, Thi Tuan Anh Pham, V. D. Nguyen, Sinh Khang Nguyen, Van Hoach Nguyen, P. Cao, Wyckliffe Omondi Omollo

引用次数: 3

Pollen profile of bee pollen from semiarid Northeastern Brazil 巴西东北部半干旱地区蜂花粉的花粉剖面

IF 1.1 4区生物学

Acta Botanica Brasilica Pub Date : 2022-01-01 DOI: 10.1590/1677-941x-abb-2022-0205

Viviane Miranda Karam, T. M. S. Silva, F. Santos

{"title":"Pollen profile of bee pollen from semiarid Northeastern Brazil","authors":"Viviane Miranda Karam, T. M. S. Silva, F. Santos","doi":"10.1590/1677-941x-abb-2022-0205","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0205","url":null,"abstract":"The Northeastern Brazil has xerical vegetation with different biomes. Its botanical heterogeneity represents shelter for diverse fauna. The region is rich in bees, which demand the resources offered by the plants, and provide pollination services. Bee pollen has been used as a beneficial food source for humans due to its high nutritional content and being a natural antioxidant. Pollen analysis can determine the plant species visited by bees, using them as the source of pollen supply. This study aimed to identify the main pollen types present in the pollen collected by Apis mellifera in the Northeastern Brazil and to define its botanical affinity. Commercial bee pollen samples produced in the region were treated by acetolysis method, mounted on slides, and the frequency of occurrence was estimated for each type of pollen. It was possible to distinguish 113 pollen types belonging to 35 botanical families, distributed in 92 genera. Fabaceae and Asteraceae were the families that most contributed to pollen types. Pollen types of Cocos nucifera and Myrcia were found in more than 50% of the samples. The families Arecaceae and Fabaceae showed high beekeeping potential. There is a striking similarity between the pollen samples from the states of Pernambuco and Rio Grande Norte.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"28 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88250818","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

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