Gayana. Botánica最新文献

{"title":"Cambios en cobertura y regeneración arbórea en bosques siempreverdes en diferentes estados sucesionales en el sitio experimental de Llancahue, Cordillera de la Costa de Valdivia, Chile","authors":"Pablo J. Donoso, D. Ponce, J. B. Pinto, Iván L. Triviño","doi":"10.4067/s0717-66432018000200657","DOIUrl":"https://doi.org/10.4067/s0717-66432018000200657","url":null,"abstract":"","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130196588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nueva localidad para Avellanita bustillosii Phil. (Euphorbiaceae) en la Región de O´Higgins y su estado de conservación","authors":"Patricio Medina, Gloria Rojas","doi":"10.4067/s0717-66432018000100539","DOIUrl":"https://doi.org/10.4067/s0717-66432018000100539","url":null,"abstract":"A new record for Avellanita bustillosii Phil. is added. Botanical surveys in pre-andean mountain range of O ́Higgins Region leads to find a new population. Their distributional southern limit is extended about 26.5 km. This population was found between 700 and 880 masl, in the northern slope of the Retamal foothill and the slopes with eastern exposure of the Trocalán hill, both located at 11 km east of the town of Requinoa, Cachapoal Province, O ́Higgins Region. This finding it ́s a contribution to the taxon chorology and reveals the lack of information available about their distributional territory. This is the first population described to Central Chile pre-andean mountain range. A re-evaluation to its conservation status is provided. Avellanita bustillosii Phil., la “avellanita”, elemento florístico de presencia ocasional que compone el sotobosque de comunidades de bosques esclerófilos de la Cordillera de la Costa de la Región Metropolitana y de la Región de O ́Higgins (Hechenleitner et al. 2005, Serra et al. 2005, Ricci & Benoit 2008, Medina 2010). La especie conforma parte de la lista de especies con escasa representación en áreas protegidas, pues ninguna de las poblaciones conocidas se encuentran bajo el amparo del Sistema Nacional de Áreas Silvestres protegidas del Estado (CONAMA 2004, Hechenleitner et al. 2005, CONAMA 2008, Ricci & Benoit 2008, Medina 2010, CONAF 2017). Todas las poblaciones conocidas son de reducido tamaño, están insertas en comunidades vegetales fragmentadas, alteradas y amenazadas por diversos tipos de intervención antrópica (Videla 2008, Serra et al. 2005, Ricci & Benoit 2008, Hechenleitner et al. 2005, Medina 2010). La población de Marga-Marga se considera extinta (Hechenleitner et al. 2005, Serra et al. 2005, Ricci & Benoit 2008, Medina 2010). Exploraciones efectuadas por G. Rojas (SGO 166375, 166376) en la Región de O ́Higgins, revelaron la presencia de una nueva población en los faldeos de la precordillera andina que colindan con las comunas de Requínoa y Machalí. El objetivo de este trabajo consiste en dar a conocer la nueva localidad registrada para Avellanita bustillosii, junto con una breve descripción de su hábitat. Además, se amplía su límite sur de distribución. La nueva población fue registrada tras efectuar exploraciones botánicas sucesivas durante los años 20122013 en las inmediaciones de cordones montañosos de la precordillera andina y el sendero de Chile de la comuna de Requínoa, Provincia de Cachapoal, Región de O ́Higgins (Fig. 1). El área se ubica aproximadamente a 13 km sureste de Rancagua y 11 km hacia el este de la ciudad de Requínoa, 50 km al sureste de laguna de Aculeo (RM). Los sitios de observación se emplazan en el piedemonte con exposición norte del cerro Retamal (1.287 m s.n.m., 34°18’S; 70°42’W) y en los faldeos con exposición oriente del cerro Trocalán (1.229 m s.n.m., 34°16’S; 70°41’W). Se efectuó una búsqueda intensiva en el área mediante recorridos pedestres. El rastreo fue dirigido a","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121670277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flora vascular de un remanente de bosque esclerófilo mediterráneo costero: Estación de Biología Terrestre de Hualpén, Región del Biobío, Chile","authors":"María Moreno-Chacón, D. Mardones, Nataly Viveros, Karina Madriaza, Fernando Carrasco-Urra, A. Marticorena, Carlos M. Baeza, Roberto Rodríguez, Alfredo Saldaña","doi":"10.4067/S0717-66432018000100466","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100466","url":null,"abstract":"The remnants of coastal Mediterranean sclerophyll forests in Chile have a low representativeness in the National System of Protected Wild Areas despite their high endemism and species richness. In the Biobío Region, the Hualpén Terrestrial Biology Station (EBT) protects a remnant of this type of forest, for which there are no revisions describing its flora, which makes it difficult to formulate and develop strategies for its protection and conservation. This work aims are: a) to describe the taxonomic composition of vascular plants of the ETB and b) to provide information on their geographical origin, habit and conservation status. The resulting floristic list includes species identified through systematic sampling in the study area for one year, as well as EBT species stored in the collection of the Universidad de Concepción Herbarium. We identified 292 species of vascular plants, where 71 species are endemic, 124 are native, 99 are alien species. From the floristic point of view the Asteraceae family was the most diverse with 36 species, followed by Poaceae with 32 species and Fabaceae with 18 species. Herbs were the most frequent growth habit (77.2%), followed by shrub (13.9%), tree (7.5%) and sub-shrub (1.4%). Nineteen endemic and native species have been classified in some category of conservation in continental Chile, standing out Gomortega keule and Pitavia punctata both classified as endangered species, and the fern Asplenium trilobum classified as a least concern in Chile and vulnerable in the Biobío Region. Despite of the reduced protected area in the EBT (70 ha), the site has a high species richness of native species when compared with data obtained from other studies of flora in sites of central Chile.","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124973811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primeros registros de los géneros Phyllopeltula y Reimnitzia (líquenes epífitos) para el Ecuador","authors":"Andrea Bustamante, Elizabeth Gusmán, Ángel Benítez","doi":"10.4067/S0717-66432018000100535","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100535","url":null,"abstract":"","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114195918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estudio morfológico de Naiadinium polonicum (Dinophyceae) reportado por primera vez en aguas continentales de Chile","authors":"Enrique Ascencio, P. Rivera, F. Cruces, I. Vila","doi":"10.4067/s0717-66432018000100438","DOIUrl":"https://doi.org/10.4067/s0717-66432018000100438","url":null,"abstract":"","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129915218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caracterización y estructura florística de un grupo funcional vegetal del matorral espinoso tamaulipeco","authors":"Gabriel Graciano-Ávila, E. Alanís-Rodríguez, Ó. Aguirre-Calderón, M. A. González-Tagle, E. A. Rubio-Camacho, J. M. M. Balderas","doi":"10.4067/S0717-66432018000100512","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100512","url":null,"abstract":"RESUMEN \u0000La estructura, la diversidad y densidad de la vegetacion son elementos importantes para la caracterizacion de los ecosistemas. En el presente estudio se caracterizo la estructura y diversidad de especies suculentas, arbustivas y arboreas en un area del matorral espinoso tamaulipeco. Para ello se establecieron 70 sitios de muestreo de 10 × 10 m (100 m2), dentro de los cuales se realizo un censo de todas las especies arboreas y arbustivas (d0,10 m > 5 cm), incluyendo a las plantas suculentas. A cada individuo se le hicieron mediciones de diametro de copa. Para cada especie se obtuvo el indice de valor de importancia (IVI), calculado a partir de tres variables, abundancia de acuerdo con el numero de arboles por hectarea (n ha-1), dominancia a traves de la cobertura del area de copa y frecuencia con base en su presencia en los sitios de muestreo. Ademas, se calcularon los indices diversidad de Shannon (H´) y riqueza de Margalef (DMG). En total se registraron 67 especies, 55 generos y 25 familias. Este grupo funcional vegetal presenta una densidad de 3.313 ind ha-1 y una cobertura de copas de 16,671 m2 ha-1. Acacia rigidula obtuvo el mayor valor de importancia con 8,04% de IVIrel. La curva de rango/abundancia de especies se ajusto a una funcion log-normal, caracteristica de las asociaciones vegetales maduras. Para el indice de Margalef se obtuvo un valor de DMg=8,14, lo cual indica una alta riqueza de especies. Con lo anterior se aportan elementos cuantitativos de la vegetacion arborea, arbustiva y suculenta de un grupo funcional vegetal del matorral espinoso tamaulipeco, indicando que este tipo de vegetacion presenta una alta diversidad y riqueza de especies en comparacion con otras asociaciones vegetales del matorral. \u0000PALABRAS CLAVE: Plantas suculentas, densidad, indices de diversidad. \u0000 \u0000 \u0000ABSTRACT \u0000The structure, diversity and density of vegetation are important for the characterization of ecosystems. In the present study was characterized the structure and diversity of succulent species, trees and shrubs in area of tamaulipan thornscrub of the northeast of Mexico. Was established 70 sampling sites 10 x 10 m (100 m2), where was perform a census of all trees and shrubs (d0.10 m > 5cm), including succulent plants. Were made to each individual measurements of diameter of canopy. For each specie was obtained the importance value index (IVI) calculated starting of three variables, abundance according with the number of trees per hectare (n ha-1) dominance across of the coverage of the canopy area, and frequency with base in its presence in the sites of sampling. Also was calculated the Shannon index (H´) and Margalef index (DMG). In total were registered 67 species, 55 genres and 25 families. This plant group present a density of 3,313 ind ha-1 and the coverage of the canopy area of 16,671 m2/ha-1. Acacia rigidula was the one that obtained the major values of importance with 8.04% of IVIrel. The curve of range/abundance of species adjusted to","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117284435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contrasting floral morphology and breeding systems in two subspecies of Calceolaria corymbosa in Central Chile","authors":"Janinna Cisterna, M. Murúa","doi":"10.4067/s0717-66432018000100544","DOIUrl":"https://doi.org/10.4067/s0717-66432018000100544","url":null,"abstract":"En este estudio se caracterizó la morfología floral y se evaluaron aspectos básicos de la biología reproductiva en dos subespecies de Calceolaria corymbosa en Chile central. Nuestros resultados muestran que los rasgos de atracción de polinizadores fueron similares entre subespecies. No obstante, rasgos relacionados con la reproducción (e.g., hercogamia) podrían explicar las diferencias entre ellas. Adicionalmente, ambas subespecies mostraron diferentes estrategias reproductivas, donde C. corymbosa ssp. mimuloides fue una especie alógama, mientras que C. corymbosa ssp. santiaguina fue autocompatible y autogama parcial. En general, estos resultados sugieren que especies morfológicamente similares pueden presentar diferentes estrategias reproductivas posiblemente de acuerdo a su hábitat.","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115664923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catálogo de las plantas vasculares de Chile","authors":"Roberto Rodríguez, C. Marticorena, Diego Alarcón, Carlos M. Baeza, L. A. Cavieres, Víctor L. Finot, N. Fuentes, Andrea Kiessling, Maritza A. K. Mihoc, Aníbal Pauchard, E. Ruiz, Paulina Sánchez, A. Marticorena","doi":"10.4067/S0717-66432018000100001","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100001","url":null,"abstract":"","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121004555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological variation and geographic distribution of Schizopetalon arcuatum Al-Shehbaz (Brassicaceae), a cryptic endemic species from the Atacama Region, Chile","authors":"Óscar Toro‐Núñez, T. Flores, I. Al‐Shehbaz, M. E. Mort","doi":"10.4067/S0717-66432018000100524","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100524","url":null,"abstract":"","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131043484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mycorrhizal fungi associated with Codonorchis lessonii (Brongn.) Lindl., a terrestrial orchid from Chile","authors":"G. Pereira, L. Suz, Verónica Albornoz, C. Romero, Leonardo García, Victoria Leiva, C. Atala","doi":"10.4067/S0717-66432018000100447","DOIUrl":"https://doi.org/10.4067/S0717-66432018000100447","url":null,"abstract":"Almost all orchid species depend on association with fungal partners. These fungal species facilitate orchid seed germination and promote growth and possibly stress tolerance in adult plants, both in the field and laboratory conditions. Codonorchis lessonii is a terrestrial orchid, endemic to southern Chile and Argentina with a currently unknown conservation status. Previous studies have reported Rhizoctonia-like fungi associated with C. lessonii in Argentina, but their fungal partners in Chilean populations are unknown. This study aims to characterize and isolate the mycorrhizal fungi associated with adult individuals of C. lessonii from three different populations in Central-South Chile. Root sections showing pelotons were used for the isolation and identification of the fungal taxa. Radial fungal growth was measured for all mycelial isolates. The presence of binucleate cells placed all isolates within the families Ceratobasidiaceae and Tulasnellaceae and the identification was confirmed by molecular analysis. Fungal isolates belonging to Ceratobasidiaceae grew at a higher rate than those from Tulasnellaceae. Phylogenetic analyses showed that different fungal partners associate with this orchid, suggesting relatively low specificity. The isolation and identification of the fungal partners of C. lessonii could help understand its ecology and contribute in future restoration and propagation initiatives for the species.","PeriodicalId":262382,"journal":{"name":"Gayana. Botánica","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115242034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}