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| Registros recuperados: 13 | |
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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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| Cocentino,Adilma de Lourdes Montenegro; Fujii,Mutue Toyota; Reis,Thiago Nogueira de Vasconcelos; Guimarães-Barros,Nathalia Cristina; Rocha,Marcia de França; Neumann-Leitão,Sigrid. |
| Diversity and distribution pattern of the infralittoral green macroalgae at Potiguar basin, Rio Grande do Norte, Northeastern Brazil were analyzed from material collected at depths varying from 2 to 100 m. Collections were carried out with two types of dredges during four campaigns: July 2002, May and November 2003 and May 2004 at 43 stations. Chlorophyta is represented by 54 species, five varieties and three forms. The most representative family is Caulerpaceae, and the most diverse genus is Caulerpa, with 11 species. The results showed that most taxa (89%) are rare, and 10% are present at low frequencies. The most frequent species was Caulerpaprolifera (Forssk.) J.V. Lamour. occurring at almost all coastal and inner shelf stations, recorded in all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution patterns; Green macroalgae; Infralittoral; Tropical region; Brazil. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400014 |
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| Soares, Andrey; Souza Lira, Alex; Guazzelli Gonzalez, Julio; Nolé Eduardo, Leandro; Lucena-frédou, Flavia; Le Loch, Francois; Padovani Ferreira, Beatrice; Fredou, Thierry. |
| This study provides information about the feeding habits, population aspects and spatial distribution of the spotted goatfish, Pseudupeneus maculatus, along the coast of the tropical Brazilian continental shelf. Distribution patterns are described using length frequencies and catch rates. Stable isotope ratios of carbon (δ13C) and nitrogen (δ15N), along with stomach contents, were analysed to determine the diet of the spotted goatfish. Multivariate analysis and numerical indicators of the diet, such as numerical frequency, frequency of occurrence and weight percentage, were computed to evaluate the diet composition. The mean trophic position was defined using both stable isotope ratios and stomach content analysis. The length at first maturity for the... |
| Tipo: Text |
Palavras-chave: Distribution patterns; Stomach content analysis; Brazil; Cross-shelf; Stable isotopes. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00628/74046/73453.pdf |
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| Guggolz, Theresa; Meißner, Karin; Schwentner, Martin; Dahlgren, Thomas G.; Wiklund, Helena; Bonifácio, Paulo; Brandt, Angelika. |
| Prionospio Malmgren 1867 and Aurospio Maciolek 1981 (Annelida: Spionidae) are polychaete genera commonly found in the deep sea. Both genera belong to the Prionospio complex, whose members are known to have limited distinguishing characters. Morphological identification of specimens from the deep sea is challenging, as fragmentation and other damages are common during sampling. These issues impede investigations into the distribution patterns of these genera in the deep sea. In this study, we employ two molecular markers (16S rRNA and 18S) to study the diversity and the distribution patterns of Prionospio and Aurospio from the tropical North Atlantic, the Puerto Rico Trench and the central Pacific. Based on different molecular analyses (Automated Barcode... |
| Tipo: Text |
Palavras-chave: Distribution patterns; Haplotype networks; Vema-Fracture-Zone; Clarion-Clipperton Fracture Zone; 16S rRNA; 18S. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00610/72216/71015.pdf |
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| Thomas, Yoann; Garen, Pierre; Bennett, Auguste; Le Pennec, Marcel; Clavier, Jacques. |
| Bivalve larvae and hydrographic parameters were sampled over a range of spatio-temporal scales in a deep atoll lagoon. Bivalve larvae abundances were very high throughout the year: 18,550 m(-3) in average. Larvae were (i) concentrated at mid-depth with nocturnal ascent and diurnal descent, (ii) heterogeneously dispersed at the lagoon scale, (iii) subject to day-to-day variation in abundance and (iv) transferred between different parts of the lagoon providing evidence of intra-lagoonal connectivity. The primacy of physical factors was seen on large spatial scale with the diluting effect of water renewal and transfers by hydrodynamics. On smaller spatial scale, the primacy of biological processes was recognised, with larval swimming activity leading to dial... |
| Tipo: Text |
Palavras-chave: Bivalve larvae; Distribution patterns; Vertical migration; Pinctada margaritifera settlement; Deep atoll lagoon; French Polynesia. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00101/21200/20690.pdf |
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| Prance,Ghillean T. |
| Neste trabalho são apresentados padrões de distribuição geográfica de espécies de Chrysobalanaceae, Caryocaraceae, Dichapetalaceae e Lecythidaceae. Seis padrões são discutidos: espécies amplamente distribuidas, polimórficas (ochlospecies) onde a variabilidade morfológica não conduzia a especiação; distribuição disjunta onde a diferenciação em espécie não ocorreu; especiação através de separação histórica tal como isolamento durante o Pleistoceno; generos com grupos de espécies muito relacionadas, que não podem ser subdivididos em subgeneros; utilizou-se diagramas de isolinhas de espécies para determinar o centro de diversidade dos gêneros; e, espécies de savanas que inicialmente tinham distribuição contínua e que atualmente são isoladas. A análise de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution patterns; Speciation; Disjunct distribution; Refugia. |
| Ano: 1987 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061987000300003 |
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| MENESES,ISABEL; SANTELICES,BERNABE. |
| According to biogeographic studies made two decades ago, marine benthic algal species of the Pacific temperate coast of South America could be grouped into five components according to their geographic affinities. Each of these components was distributed differentially along the coastline between 4º and 56ºS and thus, their contribution to the overall flora varied depending on the latitude. Species composition changed at specific latitudes in such a way that three groups could be observed: from 4 to 6ºS, from 6 to 30ºS and from 30 to 55ºS. Since 1980, new information on marine algae along this coastline allows a review of the previous phytogeographic characterization. The presence/absence of algal species, separated by division and geographic affinity, was... |
| Tipo: Journal article |
Palavras-chave: Distribution patterns; Breaking points; Species composition; Temperate Pacific. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400006 |
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| MARIA,TATIANA F.; VANAVERBEKE,JAN; VANREUSEL,ANN; ESTEVES,ANDRÉ M.. |
| ABSTRACT In this review, we summarize existing knowledge of the ecology of sandy-beach nematodes, in relation to spatial distribution, food webs, pollution and climate change. We attempt to discuss spatial scale patterns (macro-, meso- and microscale) according to their degree of importance in structuring sandy-beach nematode assemblages. This review will provide a substantial background on current knowledge of sandy-beach nematodes, and can be used as a starting point to delineate further investigations in this field. Over decades, sandy beaches have been the scene of studies focusing on community and population ecology, both related to morphodynamic models. The combination of physical factors (e.g. grain size, tidal exposure) and biological interactions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Benthos; Distribution patterns; Food webs; Climatic changes. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501635 |
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| Dias,Douglas de Matos; Almeida,Meyline de Oliveira Souza; Araújo-Piovezan,Talita Guimarães de; Dantas,José Oliveira. |
| Abstract On this study, we used camera traps in a Semi deciduous Seasonal Forest, northeast of Brazil, to estimate the frequencies of occurrence of two Neotropical herbivorous mammals: the spotted paca (Cuniculus paca) and the tapeti (Sylvilagus brasiliensis), analyzing their seasonal variations of spatial distribution. We also characterized the activity pattern of the species and their seasonal variation. The herbivorous frequencies of occurrence were constant during all the seasons. In general, both species were mostly active at night. However, between the rainy and dry season, we identified differences in spotted paca activity peaks. Here we present one of the first studies on the tapeti, whose ecology is understudied. Our results also show a general... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cuniculus paca; Sylvilagus brasiliensis; Agroforestry mosaic; Distribution patterns; Activity patterns. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100210 |
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| Costa,Fábio C.; Pessoa,Karen K. T.; Liberal,Carolina N.; Filgueiras,Bruno K. C.; Salomão,Renato P.; Iannuzzi,Luciana. |
| What is the importance of open habitat in a predominantly closed forest to the dung beetle assemblage? The Atlantic Forest in Brazil is one of the most highly disturbed ecosystems and is mainly represented by fragmented areas. However, in places where human disturbances have ceased, certain areas are showing a natural regeneration pattern. The aim of the present study was to determine how the dung beetle assemblage responds to distinct habitat structures in a fragment of Atlantic Forest. For such, open and closed forest areas were sampled in a fragment of the Atlantic Forest in the northeastern region of Brazil. Pitfall traps baited with excrement and carrion were used to collect the beetles. A total of 7,267 individuals belonging to 35 species were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CIMNC; Distribution patterns; Insecta; Spatial heterogeneity. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000300012 |
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| Registros recuperados: 13 | |
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