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Registros recuperados: 27
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A new species of Astyanax (Ostariophysi: Characidae) from the headwaters of the arheic Río Sucuma, Catamarca, Northwestern Argentina Neotropical Ichthyology
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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A new species of dwarf sea bass, genus Serranus (Serranidae: Actinopterygii), from the southwestern Atlantic Ocean Neotropical Ichthyology
Carvalho Filho,Alfredo; Ferreira,Carlos Eduardo Leite.
Serranus aliceae n. sp. is described from Rio de Janeiro and Espírito Santo States, southeastern Brazilian coast. The species is readily distinguished from its congeners by the following combination of characters: scales around the caudal peduncle 20 or 21; total gill rakers on first branchial arch 23-29; cheek-scales rows 5 or 6; and by the coloration of live specimens, which are reddish with a broad, conspicuous, white stripe from post-orbital region to the caudal-fin base and a white abdomen. The new species apparently inhabits the deeper (30 or more meters) portions of reef environments along the subtropical Brazilian coast, and is possibly associated with upwelling cold-water masses. The species was observed hovering above rocky bottoms, feeding on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Endemic species; Reef fish; Rocky reef; Subtropical; Teleostei.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400809
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A new species of Farlowella (Siluriformes: Loricariidae) from the upper Bermejo River, La Plata River basin, northwestern Argentina Neotropical Ichthyology
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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A remarkable new species of Pleurophora (Lythraceae) from Caatinga of Pernambuco, Brazil. Repositório Alice
SIQUEIRA-FILHO, J. A.; COTARELLI, V. M.; PASTORE, J. F. B.; GRAHAM, S. A.; CAVALCANTI, T. B..
bitstream/item/136729/1/036364415x686495.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Endemic species; Pleurophora pulchra; Pollen morphology; Taxonomy.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1033155
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Asymbiotic germination in three Chloraea species (Orchidaceae) from Chile Gayana Botánica
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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Birds from cerradão woodland, an overlooked forest of the Cerrado region, Brazil Pap. Avulsos de Zool. (São Paulo)
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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Borda Oeste do Pantanal e Maciço do Urucum em Corumbá, MS: área prioritária para conservação da biodiversidade. Repositório Alice
TOMAS, W. M.; ISHII, I. H.; STRUSSMANN, C.; NUNES, A. P.; SALIS, S. M. de; CAMPOS, Z. M. da S.; FERREIRA, V. L.; BORDIGNON, M. O.; BARROS, A. T. M. de; PADILHA, D. R. C..
A região do Maciço do Urucum e adjacências apresenta característica ímpar dentro do Estado do Mato Grosso Sul e do Brasil, em função das influências que recebe de ecossistemas vizinhos, dos endemismos existentes e da ocorrência de espécies de distribuição no Brasil restrita a esta área. A região é uma península com 1.311 km2 de áreas não inundáveis que penetra o Pantanal. Nesta estreita faixa, as atividades de mineração, de indústrias, o crescimento urbano, a expansão de assentamentos rurais e a ampliação de áreas de agropecuária têm potencial para causar impactos profundos na biodiversidade, podendo aumentar o já preocupante estado de fragmentação da vegetação, causando isolamento entre populações, aumentando os riscos de extinção local. Foram levantadas...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Espécies ameaçadas; Espécies endêmicas; Espécies raras; Impacto ambiental; Endangered species; Endemic species; Rare species; Environmental impact.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/868263
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Breeding system of Embothrium coccineum (Proteaceae) in two populations on different slopes of the Andes RChHN
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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Coleus namuliensis and Coleus caudatus (Lamiaceae):a new species and a new combination in the Afromontane flora of Mozambique and Zimbabwe Naturalis
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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Eastern Africa Coastal Forest Programme OceanDocs
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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Effects of physical mixing on the environment of satellite lakes and dams of lake Victoria, Kenya OceanDocs
Guya, F.; Wakwabi, E.; Jembe, T.; Osumo, W.; Sitoki, L.; Ogutu, Z..
In the Lake Victoria (Kenya) catchment are found several small lakes and dams. The satellite lakes and dams are important aquifers and buffer zones for the lake. Besides the water bodies are important water sources both for livestock and domestic use. A study conducted in the water bodies between January 2003 and December 2004 showed that effects of eutrophication are wide spread in the lakes and dams. An investigation of primary productivity and effects of physical mixing and material transport was done. In Lake Sare, Lake Victoria waters are transported to the satellite lake during both day and night through Goye causeway that connects the two. The water bodies have higher rates of primary productivity than Lake Victoria. Spatial extent of oxygen...
Tipo: Proceedings Paper Palavras-chave: Dams; Eutrophication; Water reservoirs; Inland waters; Water bodies; Eutrophication; Primary production; Lake basins; Water mixing; Artificial lakes; Oxygen depletion; Endemic species; Pollution effects; Eutrophication; Dams; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_2121.
Ano: 2006 URL: http://hdl.handle.net/1834/1494
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Flora das cangas da Serra dos Carajás, Pará, Brasil: Lythraceae. Repositório Alice
CAVALCANTI, T. B.; FACCO, M. G.; BRAUNER, L. de M..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Amazônia; Cuphea; Espécie endêmica; Florística; Endemic species; Floristics.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1061602
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Ichthyofauna of the Una river in the Paraíba do Sul Paulista River Valley, Southeastern of Brazil Biota Neotropica
Honorio,Juliano Rodrigues; Martins,Itamar Alves.
Abstract: This study focus on an inventory of the ichthyofauna of the Una river, a tributary of the Paraíba do Sul river, located in the region of Paraíba do Sul River Valley, in the State of São Paulo. Sampling was carried out in three sampling areas along the channel of the Una river between April 2016 and March 2017. For the collection of fish specimens, was used angling, fyke nets, cast nets, dragnets and hand nets. A total of 1.534 specimens were collected, which corresponds to five different orders, 14 families, 26 genera and thirty species. The study revealed that the most significant number of reported species are from the orders Siluriformes and Characiformes. The Characidae family was the most representative concerning the wealth of species and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Introduced species; New occurrence records; Diversity; Endemic species.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400304
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Impacts of Population and Income Growth Rates on Threatened Mammals and Birds AgEcon
Pandit, Ram; Laband, David N..
Per capita income and human population levels in a country have direct influences on its environmental outcomes. Countries with same level of income may have different rate of income growth and vice versa, suggesting that the influence of the rate of income growth on environmental outcomes could be different than that of income level. Similarly, the rate of population growth might have different impact in addition to the impacts of sheer number of population. We explore this empirical question using country-level data on threatened species published by IUCN for the year 2007. Controlling for other factors, our model estimates the influences of the rate of population and income growth on threatened mammals and birds across 113 continental countries. The...
Tipo: Conference Paper or Presentation Palavras-chave: Income; Population; Spatial models; Spatial autocorrelation; Endemic species; Biodiversity; Environmental Economics and Policy; C21; Q57.
Ano: 2011 URL: http://purl.umn.edu/101404
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In vitro establishment and multiplication of the Normania triphylla (Lowe) Lowe BABT
Delmail,David; Labrousse,Pascal; Lesouëf,Jean-Yves; Le Hir,François; Autret,Jean-Luc; Botineau,Michel.
Normania triphylla is an endemic species from Madeira island (Portugal) extinct in the wild since 1991. The aim of this work was to culture the meristems of this species in vitro and to multiply its shoots in order to preserve this endangered species. The best results in terms of multiplication were obtained in Murashige and Skoog medium supplemented with 10 µM 6‑benzylaminopurine (BAP). The number of shoots, the number of nodes and the number of leaves were the most important in this medium. However, the best results concerning the total shoot length were obtained when BAP was not supplemented into the medium and in the presence of 5 or 7.5 µM 1-naphtalene acetic acid (NAA). This is the first report on the in vitro culture of N. triphylla which could...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Normania; Endemic species; Micropropagation; 6‑benzylaminopurine; Callus.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400009
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La evolución en acción: el significado de las agrupaciones animales OceanDocs
Baisre, J. A..
En el mar, un grupo variado de anima­ les se asocian, a veces de forma casi per­ manente yen ocasiones solamente duran­ te períodos muy específicos. Que ustedes conozcan un poco más acerca del signifi­ cado e importancia de las agrupaciones en el mar es el objetivo de este artículo.
Tipo: Journal Contribution Palavras-chave: Evolution (organisms); Endemic species; Fishes; Aquatic natural resources; Animals (aquatic); Marine biology; Biological collections; Coastal fisheries.
Ano: 2007 URL: http://hdl.handle.net/1834/5058
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Lectotypification. and a new synonym of Bonamia. sericea ( Convolvulaceae): endemic. species from Argentina. Repositório Alice
MOREIRA, A. L. da C.; SIMÃO-BIANCHINI, R.; CAVALCANTI, T. B..
bitstream/item/216174/1/24823-Texto-del-arti769culo-83773-1-10-20200319.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Endemic species; Lectotypification; Synonym; Especies endémicas; Lectotipificación; Sinóoimos; Taxonomia; Taxonomy.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1125085
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Plant species and habitat structure in a sand dune field in the brazilian Caatinga: a homogeneous habitat harbouring an endemic biota Rev. Bras. Bot.
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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Reproductive biology of a highly endemic species: Cipocereus laniflorus N.P. Taylor & Zappi (Cactaceae) Acta Botanica
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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Small mammals (Chiroptera, Didelphimorphia, and Rodentia) from Jaíba, middle Rio São Francisco, northern Minas Gerais State, Brazil Biota Neotropica
Nogueira,Marcelo Rodrigues; Pol,André; Pessôa,Leila Maria; Oliveira,João Alves de; Peracchi,Adriano Lúcio.
We report the results of small mammals inventories conducted in the region of Jaíba, northern Minas Gerais state, southeastern Brazil, from 1990 to 1995. This region is located in the southern limit of the Caatinga biome, and harbors a unique set of natural ecosystems and extensive agricultural areas. With a total effort of 2964 trap-nights and 44 net sessions, we captured 893 small mammals from 46 species, including four marsupials, 13 rodents, and 29 bats. We report on species that are endemic to the Caatinga (Wiedomys pyrrhorhinos and Xeronycteris vieirai), and species that are new to the mammal fauna of the state of Minas Gerais (Tonatia saurophila, X. vieirai, and Myotis lavali). We also provide the first valid voucher-supported record of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caatinga; Limestone outcrop; Endemic species; Range extension; Taxonomy.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000200207
Registros recuperados: 27
Primeira ... 12 ... Última
 

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