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| Registros recuperados: 271 | |
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| Villanueva Sanhueza, F.A.. |
| Actualmente la intensidad, duración y cobertura geográfica de las FAN producidas por la especie Alexandrium catenella (Whedon & Kofoid, Balech 1985), en el sur de Chile han aumentado desde 1972 hasta 2005, extendiéndose desde la XII Región hasta la X Región. De una estación fija ubicada en la XI Región, denominada “Nueva Hammerfest”, se analizó una serie de tiempo desde 1993 a 2005, con el fin de determinar si la presencia de A. catenella está relacionada con eventos tóxicos de esta especie observados en la zona austral de Chile. El análisis se basó en el recuento de células de muestras de red, estimación de Índices de Abundancia Relativa y relaciones de dependencia de la especie con registros de temperatura del agua. Se recolectaron 537 muestras de... |
| Tipo: Theses and Dissertations |
Palavras-chave: Biogeography; Phytoplankton; Red tides. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/4917 |
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| FLOETER,S. R.; SOARES-GOMES,A.. |
| Patterns of richness and biogeography of Gastropoda molluscs were determined based on lists of species from five sites along the southwestern Atlantic. The analysis of the distribution patterns of these sites confirmed the existence of a broader transition zone between southern Espírito Santo State (21°S) and Rio Grande do Sul State (32°S). This zone is very heterogeneous, presenting a low endemism rate and a significant number of species common to the near provinces, and does not show enough consistency to be considered as an independent biogeographic province as proposed by Palacio (1980). Observing the distribution of species along the southwestern Atlantic we find an increase in the proportion of species with greatest latitudinal ranges (occurring from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogeography; Gastropoda; Southwestern Atlantic; Diversity. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400006 |
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| Ramírez Llodra,Eva; Tyler,Paul A; German,Christopher R. |
| The vast majority of the mid-ocean ridge system and of the continental margins around the globe have not yet been explored. A relatively small number of vent and seep sites have been analysed and are the focus of long-term research programmes. However, the exploration of new areas will certainly provide the discovery of new vent and seep sites. Furthermore, the study of these key locations will lead to the description of new species and improve our understanding of the abundance, diversity, and distribution of species from chemosynthetically-driven systems around the world's oceans. It is the aim of ChEss to develop an exploration field phase to discover new deep-water hydrothermal vents and cold seeps at key locations, to describe their fauna, and to... |
| Tipo: Journal article |
Palavras-chave: Biogeography; Hydrothermal vents; Cold seeps; Southern oceans. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382003000200006 |
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| Linis, V.C.. |
| The moss flora of Mindoro Island was updated based on the 2004–2006 expeditions conducted by the author. The island’s moss flora now consists of 282 species in 128 genera and 39 families, which is higher than Palawan but far less than those of Luzon and Mindanao. Generally, the flora is most abundant in the eastern rainy part of the island, especially along mid-elevations on the east-facing slope of the central mountain range in the transition zone between montane and mossy forests. Moss diversity is also greater in riverine forests than in inland forests at low elevations. Only three moss taxa, Rhaccocarpus alpinus, Dicranoloma daymannianum and Distichophyllum noguchianum, have their Philippine range restricted to the island. Distichophyllum noguchianum... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Biogeography; Bryophytes; Diversity; Mindoro; Mosses; The Philippines. |
| Ano: 2009 |
URL: http://www.repository.naturalis.nl/record/525299 |
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| Moalic, Yann; Desbruyeres, Daniel; Duarte, Carlos M.; Rozenfeld, Alejandro F.; Bachraty, Charleyne; Arnaud-haond, Sophie. |
| Defining biogeographic provinces to understand the history and evolution of communities associated with a given kind of ecosystem is challenging and usually requires a priori assumptions to be made. We applied network theory, a holistic and exploratory method, to the most complete database of faunal distribution available on oceanic hydrothermal vents, environments which support fragmented and unstable ecosystems, to infer the processes driving their worldwide biogeography. Besides the identification of robust provinces, the network topology allowed us to identify preferential pathways that had hitherto been overlooked. These pathways are consistent with the previously proposed hypothesis of a role of plate tectonics in the biogeographical history of... |
| Tipo: Text |
Palavras-chave: Biogeography; Deep sea ecology; Hydrothermal vents; Network analysis; Systems biology. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00063/17400/15164.pdf |
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| Scenna, L.B.. |
| Se estudia la biología y ecología reproductiva de las ocho especies de Bathyraja presentes en la plataforma continental argentina (Atlántico S.O.), a través del análisis del tamaño corporal, las cápsulas de huevos, el desarrollo de los embriones, la talla de madurez sexual, las variaciones en las condiciones reproductivas, las áreas de puesta y la segregación espacial de los individuos. El material examinado provino de campañas de investigación llevadas a cabo por el Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) entre 34º40'S y 54º30'S, desde septiembre 2003 hasta octubre 2007. La información presentada en el trabajo demuestra que las especies del Género Bathyraja en la plataforma argentina maduran a una talla alta en relación a la Lt... |
| Tipo: Theses and Dissertations |
Palavras-chave: Reproduction; Biogeography; Morphometry; Fish eggs; Sexual maturity; Spawning grounds; Marine fish; Rajidae; Marine environment. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4776 |
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| Willis,Edwin O.; Oniki,Yoshika. |
| In uplands and lowlands of Santa Teresa, central Espírito Santo State, Brazil, 405 bird species were confirmed by field, museum, and literature studies. Of these, 16 seem to have disappeared, while 67 other species seem to have been lost from the lowlands (where no large biological reserves exist). Due to a suggestion that human areas add species to beta-diversity, we verified that up to 79 species now present have perhaps "invaded" with human activity (and 10 others are likely to invade), a total similar to that for lost species. However, lost species are often rare and invading species often widespread, resulting in exchange of "Picassos for Coca-Cola bottles." Furthermore, gains exceed losses only when large biological reserves are present, as in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Avifaunas; Beta-diversity; Biodiversity; Biogeography; Biological reserves; Espírito Santo; Luxury tax; Productivity. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492002000900001 |
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| NAVARRO,FERNANDO R; CUEZZO,FABIANA; GOLOBOFF,PABLO A; SZUMIK,CLAUDIA; LIZARRALDE DE GROSSO,MERCEDES; QUINTANA,M. GABRIELA. |
| The main purpose of this study is to analyze whether areas of endemism can be characterized quantitatively by using insects, which are typically much more poorly sampled than vertebrates or plants. For this, an optimality criterion in the search for endemic areas was used to analyze approximately 1,100 georeferences from 288 species of holometabolous insects found in the study region, the Yungas (a very moist, montane rainforest), located in north-western Argentina. The optimality criterion is implemented with the programs NDM/VNDM, used to evaluate areas of endemism (i.e. a set of cells defined by two or more endemic species). Five grid sizes were used, three square (Iº, 0.5°, and 0.25°) and two rectangular (0.25° x 0.5° and 0.5° x 0.25°). In agreement... |
| Tipo: Journal article |
Palavras-chave: Biogeography; Distribution patterns; Montane forests; NDM/VNDM. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000400006 |
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| Gualancañay, E.; Tapia, M.E.; Naranjo, Ch.; Cruz, M.; Villamar, F.. |
| Para el estudio biológico y ambiental de la bahía de Jaramijó en los componentes fitoplancton, zooplancton, microbentos y macrobentos, se analizaron 15 estaciones provenientes de tres niveles entre 10 y 20 metros de profundidad y dividido en tres perfiles paralelos a la costa, durante las estaciones seca y lluviosa del año 2008. El fitoplancton y zooplancton resultaron muy abundantes durante la estaciòn lluviosa y menos abundante en la estación seca del año 2008. Predominaron las especies de diatomeas: Bacteriastrum hyalinum, Leptocylindrus danicus, Rhizósolenia stolterfothii, Chaetoceros affinis y Ch. curvisetus y la presencia de dinoflagelados y cianobacterias fue escasa dinoflagelados. En general las especies halladas son típicas de una mezcla de masas... |
| Tipo: Journal Contribution |
Palavras-chave: Phytoplankton; Zooplankton; Biogeography; Biomass; Marine molluscs. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4212 |
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| Williams, S. T.; Smith, L. M.; Herbert, D.g.; Marshall, B. A.; Waren, A.; Kiel, S.; Dyal, P.; Linse, K.; Vilvens, C.; Kano, Y.. |
| Recent expeditions have revealed high levels of biodiversity in the tropical deep-sea, yet little is known about the age or origin of this biodiversity, and large-scale molecular studies are still few in number. In this study, we had access to the largest number of solariellid gastropods ever collected for molecular studies, including many rare and unusual taxa. We used a Bayesian chronogram of these deep-sea gastropods (1) to test the hypothesis that deep-water communities arose onshore, (2) to determine whether Antarctica acted as a source of diversity for deep-water communities elsewhere and (3) to determine how factors like global climate change have affected evolution on the continental slope. We show that although fossil data suggest that solariellid... |
| Tipo: Text |
Palavras-chave: Biogeography; Deep sea; EoceneOligocene transition; Phylogeny. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00140/25122/23231.pdf |
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| Morrone, J.J.; Coscarón, M. del C.. |
| The assassin bug genus Rasahus Amyot & Serville (Heteroptera: Reduviidae: Peiratinae) comprises 26 Neotropical species. A cladistic analysis of the genus was carried out using 63 characters from external morphology, body vestiture, and male and female genitalia, with the species considered as terminal taxa. The analysis yielded 149 equally parsimonious cladograms, each with 206 steps, CI = 0.35, and RI = 0.60; the successive weighting procedure resulted in eight cladograms (CI = 0.79 and RI = 0.91). In the strict consensus cladogram, two major clades are delimited: one comprising the species R. rufiventris, R. hamatus, R. arcitenens, R. arcuiger, R. amapaensis, R. thoracicus, R. biguttatus, R. argentinensis, R. limai, R. grandis, and R. angulatus; and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Cladistics; Biogeography; Rasahus; Heteroptera; 42.75. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/215077 |
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| Wethey, David S.; Woodin, Sarah A.; Berke, Sarah K.; Dubois, Stanislas. |
| The ecosystem engineer onuphid polychaete Diopatra biscayensis has a continuous population in the Bay of Biscay from the Cantabria coast in Spain to southern Brittany in France. A group of disjunct populations also are found in the English Channel, separated from the Biscay population by more than 400 coastal kilometers. It remains unclear whether D. biscayensis is native to the Bay of Biscay; it is also debated whether the disjunct populations in the English Channel are relics of a formerly continuous population, or the product of recent introductions through aquaculture. Here, we use climate hindcasts to explore hypotheses about the D. biscayensis historical distribution in Europe. If D. biscayensis is native, its range would have been restricted to... |
| Tipo: Text |
Palavras-chave: Climate change; Biogeography; Metapopulation; Diopatra; Historical projections. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00356/46711/46974.pdf |
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| Culik,Mark Paul; Martins,David dos Santos; Ventura,José Aires; Peronti,Ana Lúcia Benfatti Gonzalez; Gullan,Penny Jean; Kondo,Takumasa. |
| New plant hosts are recorded for nine scale insect species recently collected in Espírito Santo, Brazil, and eleven scale insect species are recorded for the first time from the state: Ceroplastes floridensis Comstock, Coccus longulus (Douglas), Coccus viridis (Green), Eucalymnatus tesselatus (Signoret), Pseudokermes sp., Saissetia coffeae (Walker), Phenacoccus madeirensis Green, Pseudococcus jackbeardsleyi Gimpel & Miller, Pseudococcus longispinus (Targioni Tozzetti), Icerya purchasi Maskell, and Icerya genistae Hempel. This is also the first record of Co. longulus in Brazil. Information on the host plants and geographic distribution of the 26 species of scale insects of the families Coccidae, Pseudococcidae, Ortheziidae, and Monophlebidae,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Scale insects; Invasive species; Icerya genistae; Biodiversity; Biogeography. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000300006 |
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| Vicari,Marcelo Ricardo; Noleto,Rafael Bueno; Artoni,Roberto Ferreira; Moreira-Filho,Orlando; Bertollo,Luiz Antonio Carlos. |
| Karyotype data are presented for distinct species of the genus Astyanax from four rivers belonging to three different hydrographic basins of the State of Paraná, Brazil (Verde River - Tibagi basin, Açungui River - Ribeira basin, and Santo Antônio and Jaguariaíva Rivers - Jaguariaíva basin). Three karyotypic forms were identified, here denominated karyotype A (2n = 50 chromosomes, with 8m+18sm+10st+14a, and thirteen 18S rDNA sites); karyotype B (2n = 50 chromosomes, with 8m+18sm+10st+1f4a, and four 18S rDNA sites); and karyotype C (2n = 48 chromosomes, with 10m+16sm+10st+12a, and eight 18S rDNA sites). The pattern of constitutive heterochromatin was similar among the three karyotypic forms, with few differences. The 5S rDNA corresponds to a synapomorphic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Karyotype evolution; Cytotaxonomy; RDNA sites; Biogeography. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200002 |
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| Registros recuperados: 271 | |
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