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Registros recuperados: 23 | |
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PEREIRA,GUILLERMO; ALBORNOZ,VERÓNICA; ROMERO,CHRISTIAN; LARA,SEBASTIÁN; SÁNCHEZ-OLATE,MANUEL; RÍOS,DARCY; ATALA,CRISTIAN. |
ABSTRACT Orchids require symbiotic fungi and/or specific conditions to germinate. Asymbiotic techniques have been shown successful for orchid germination. In Chile, Chloraea include many endemic, and potentially ornamental, terrestrial orchid species. In this study, individuals of Chloraea crispa, C. gavilu and C. virescens were manually autopollinated. The resulting capsules were sterilized and seeds were aseptically obtained. We evaluated asymbiotic germination in: Agar Water (AW), Knudson C (KC), Banana Culture Media (CMB), Tomato Culture Media (CMT), Malmgren Modified (MM), Murashige and Skoog (MS), and MS modified (MS1/2). Seeds were incubated in the dark at 24±1 ºC for 2 weeks. Then they were put in 16/8 h light/dark cycles for 14 weeks. We... |
Tipo: Journal article |
Palavras-chave: Terrestrial orchids; Endemic species; In vitro germination; Culture media; Orchid propagation; Asymbiotic germination. |
Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100131 |
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Downes, E.; Darbyshire, I.. |
The new species Coleus namuliensis (Lamiaceae) is described from the granite outcrops and grasslands of Mt Namuli in Zambezia Province of Mozambique. It has previously been confused with Plectranthus caudatus, a species that is restricted to the quartzite outcrops of the Chimanimani Mountains on the Mozambique-Zimbabwe border for which the new combination in Coleus is formalised in this paper. Other potential confusion species are discussed and a rationale for applying the generic name Coleus rather than Plectranthus is provided. Despite their highly restricted ranges, C. namuliensis and C. caudatus are both considered to have a conservation status of Least Concern at present, although climate change may pose a longer-term threat to their survival. |
Tipo: Article / Letter to the editor |
Palavras-chave: Endemic species; IUCN conservation assessment; Taxonomy. |
Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/638510 |
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Terán,Guillermo E.; Ballen,Gustavo A.; Alonso,Felipe; Aguilera,Gastón; Mirande,J. Marcos. |
ABSTRACT A new species of Farlowella is described from the Bermejo River basin, in Salta and Jujuy provinces, northwestern Argentina. The new species belongs to the Farlowella nattereri species group. The new species is diagnosed by the following combination of characters: marbled rostrum, five rows of lateral plates series, relatively short snout (snout-mouth length less than 50.0% of head length), complete half-moon shaped spot on caudal fin, and short predorsal distance (37.8-41.8% of standard length). |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armored catfish; Chaco Ecoregion; Endemic species; Loricariinae; Taxonomy. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200206 |
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Terán,Guillermo E.; Butí,Cristina I.; Mirande,J. Marcos. |
ABSTRACT A new species of Astyanax is described from the arheic system of Río Sucuma, in Catamarca, Northwestern Argentina. The new species is distinguished from its congeners by a combination of characters including the presence of a broad vertical humeral spot, absence of maxillary teeth, and absence of circuli in posterior field of scales. Furthermore, this species is distinguished by the orbital diameter, head length, branched anal-fin rays, perforated lateral-line scales, transverse scales, dentary teeth with abrupt decrease in size. This species is, to date, the single known fish endemic of Río Sucuma basin. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arheic system; Characiformes; Cryptic species; Endemic species; Phylogeny. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200209 |
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Younge, A.. |
The eastern African coastal forest ecoregion is recognised as one of Africa’s centres of species endemism, and is distributed over six countries (Somalia, Kenya, Tanzania, Mozambique, Zimbabwe and Malawi). Most is found in Kenya, Tanzania and Mozambique, which form our focal region. The coastal forests are fragmented, small and surrounded by poor communities that have a high demand for land and forest resources. Although coastal forests have significant cultural and traditional values for local communities, they do not receive adequate support from the relevant government authorities and international conservation institutions. WWF has over 10 years research and conservation experience on the eastern Africa coastal forests in Kenya, Tanzania and Mozambique... |
Tipo: Report |
Palavras-chave: Coastal zone; Forests; Endemic species; Coastal area; Ecological zones; Http://aims.fao.org/aos/agrovoc/c_9000021; Http://aims.fao.org/aos/agrovoc/c_15704. |
Ano: 2002 |
URL: http://hdl.handle.net/1834/307 |
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Acero-P., A.. |
The chaenopsine blennies are an homogeneous group which may be considered a subfamily of the Clinidae, since the existing evidence is not enough to give them familial status. The subfamily includes eight genera: Mccoskerichthys, Coralliozetus, Acanthemblemaria, Ekemblemaria, Emblemaria, Hemiemblemaria, Lucayablennius, and Chaenopsis. The nominal genera Protemblemaria and Emblemariopsis are herewith considered synonyms of Coralliozetus, since they share two derived characters: small size and sexual dimorphism in the color of the head, and are rather similar in several other characteristics. The división of the West Indian Zoogeographical Province made by Briggs (1974) is unnatural, since the fish fauna of Belize, Florida and the Bahamas is very similar. I... |
Tipo: Journal Contribution |
Palavras-chave: Fish; Ichthyology; Endemic species; Fish; Endemic species; Ichthyology; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_26882; Http://aims.fao.org/aos/agrovoc/c_3788. |
Ano: 1984 |
URL: http://hdl.handle.net/1834/4031 |
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Chasqui Velasco, Luis; Gil Agudelo, Diego L.; Nieto, Ramón. |
Las especies de peces endémicos de la isla Malpelo han sido poco estudiadas, al punto que no se cuenta con información sobre sus densidades y preferencias de hábitat. Mediante censos visuales se estudió la distribución y abundancia de las especies de peces arrecifales endémicos de Malpelo. Las especies más abundantes fueron Axoclinus rubinoffi (0.18 peces/m2) y Lepidonectes bimaculatus (0.08 peces/m2). La mayor abundancia se encontró en el Bajo de Junior y en relación con sustrato rocoso cubierto con algas coralináceas incrustantes. |
Tipo: Journal Contribution |
Palavras-chave: Endemic species; Marine fish; Abundance. |
Ano: 2011 |
URL: http://hdl.handle.net/1834/4419 |
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Cavarzere,Vagner; Moraes,Gabriel Parmezani; Dalbeto,Andreli Cristina; Maciel,Fernanda de Góes; Donatelli,Reginaldo José. |
The Cerrado region still receives relatively little ornithological attention, although it is regarded as the only tropical savanna in the world considered to be a biodiversity hotspot. Cerradão is one of the least known and most deforested Cerrado physiognomies and few recent bird surveys have been conducted in these forests. In order to rescue bird records and complement the few existing inventories of this under-studied forest type in the state of São Paulo, we looked for published papers on birds of cerradão. Additionally we surveyed birds at a 314-ha cerradão remnant located in central São Paulo, Brazil, from September 2005-December 2006 using unlimited distance transect counts. Out of 95 investigations involving cerradão bird studies, only 17 (18%)... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado sensu lato; Endemic species; Peripheral Cerrado areas; Transect counts. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011001700001 |
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Rocha,Pedro Luís B. da; Queiroz,Luciano P. de; Pirani,José Rubens. |
One dune habitat in the semi-arid Caatinga Biome, rich in endemisms, is described based on plant species composition, woody plant density, mean height and phenology and a multivariate analysis of the micro-habitats generated by variables associated to plants and topography. The local flora is composed mainly by typically sand-dweller species of Caatinga, suggesting the existence of a phytogeographic unity related to the sandy areas in the Caatinga biome, which seems to be corroborated by faunal distribution. Moreover, some species are probably endemic from the dunes, a pattern also found in vertebrates. The plant distribution is patchy, there is no conspicuous herbaceous layer and almost 50% of the ground represents exposed sand. Phenology is not... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Density; Endemic species; Phenology; Phytogeography; Semiarid. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000400013 |
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Rocha,Carlos F. D.; Siqueira,Carla da C.; Ariani,Cristina V.. |
Liolaemus lutzae Mertens, 1938 is a critically endangered lizard endemic to the restinga habitat of the state of Rio de Janeiro. We surveyed 25 restinga habitats in order to locate remaining populations, evaluate the status of the species, and determine the nature of local habitat degradation. We found remnant populations of L. lutzae in 18 restinga habitats of six municipalities. The conservation status of each population varied between areas: the population of Grumari, in Rio de Janeiro municipality, is the most preserved and the population of Praia do Forte, in Cabo Frio, is the most disturbed. No L. lutzae were found in Niterói municipality. The most destructive type of habitat degradation identified was the removal of beach vegetation associated with... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Endangered species; Endemic species; Habitat degradation; Population recovery. |
Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000300009 |
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ROVERE,ADRIANA E; SMITH-RAMÍREZ,CECILIA; ARMESTO,JUAN J; PREMOLI,ANDREA C. |
Plant breeding systems are considered to reflect species' life history characteristics, selection due to biotic or abiotic factors, pollination conditions, or a combination of these. Reproductive systems may vary over ecological gradients. The breeding system of the ornithophilous Embothrium coccineum (Proteaceae) from temperate South America was studied by pollination treatments: manual self-pollination, manual cross-pollination, automatic self-pollination, and natural pollination. These treatments were conducted in a coastal western and an Andean eastern population. Embothrium coccineum was found to be self-incompatible and highly dependent on the pollinating agent at both sites. However, pollen limitations were greater in the coastal population, as... |
Tipo: Journal article |
Palavras-chave: Self-incompatibility; Endemic species; Temperate forest. |
Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000200008 |
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Melo,Paulo Alexandre Fernandes Rodrigues de; Cavalcanti,Maria Idaline Pessoa; Alves,Edna Ursulino; Martins,Cibele Chalita; Araújo,Luciana Rodrigues de. |
ABSTRACT The Eriotheca gracilipes (K. Schum.) A. Robyns) is a forest specie that belongs to the Bombacaceae family and is considered an endemic specie from the Brazilian savanna. The aim of this study was to evaluate the best substrate and temperature for the vigor and germination test of E. gracilipes seeds. The experiment was carried out in a randomized design with a 4 x 7 factorial, with 28 treatments with the combination of four temperatures (20; 25; 30 and 20-30 ºC) and seven substrates (coarse vermiculite, medium vermiculite, sand, Basaplant®, paper towel, on and between filter papers), with 4 repetitions of 25 seeds each. It was assessed germination, first count of germination, and germination speed index. In conclusion, for germination and vigor... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bombax gracilipes; Endemic species; Native forest; Vigor. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000200303 |
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Rego,Juliana Ordones; Franceschinelli,Edivani Villaron; Zappi,Daniela Cristina. |
Cipocereus laniflorus N.P. Taylor & Zappi is an endemic species from the Serra do Caraça, State of Minas Gerais, Brazil. In order to propose conservation strategies for this species, its reproductive strategies were investigated, including reproductive phenology, floral biology, floral visitors and breeding system. The flowering and fruiting period extends from May to October. Few flowers per plant open each night, producing up to 0.4 ml nectar, but 30% of them are nectarless. Probably pollen is also offered as a resource. Fruiting efficiency of C. laniflorus (47%) is close to that found in other Cactaceae species. Pollen of this species was detected in Anoura geoffroy, Soricina glossophaga and Pygoderma bilabiatum bats. Amongst the characteristics... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bat-pollination; Endemic species; Rare species; Serra do Caraça. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000100023 |
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Françoso,Renata D.; Haidar,Ricardo F.; Machado,Ricardo B.. |
Biological knowledge is important for guidance of conservation polices. In the Cerrado, an extremely diverse biome, the last synthesis of floristic knowledge has more than ten years. To understand the progress on the information, our aim was quantify the tree species of the Cerrado, and assess their distribution. We compiled 167 inventories and rapid surveys of tree species, corresponding to 625 sites. We accessed the species distributions in the Brazilian biomes, and estimated the number of species in the savannas of Cerrado using four algorithms. We observed a greater local richness in more central regions of the biome, but due to high beta diversity, more peripheral regions presented a greater cumulative richness. The Atlantic Forest was the most... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian flora; Cerrado; Endemic species; Floristic patterns; South America; Species distribution. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100078 |
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Registros recuperados: 23 | |
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