SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Modification de l'équilibre démographique de la meiofaune dans les lagunes aménagées de Certes

Malissen, M.o.; Lasserre, P..

In lagoons and estuarine ecosystems, the benthic microflora contributes considerably to the primary production of the area and consists largely of diatoms Monthly samplings have been made from December 1976 to March 1978 in a shallow station characterized by the lack of macrophytes. Two sets of monthly samplings were made allowing in theone hand a qualitative analysis and on the other hand a quantitative study by cellular counts. The diatom populations show a cyclic evolution with two peaks : one in February 1977 and the other in September 1977. This cycle is confirmed by the diversity and dominance analysis. Seasonal evolution is characterized by the dominance of one or more species with well marked succession of dominant species (Nitzschia Navicula et...

Tipo: Text

Palavras-chave: Diatomées benthiques; Variations saisonnières; Diversité; Lagunes; Bassin d'Arcachon; Benthic diatoms; Seasonal variations; Diversity; Lagoons; Arcachon Bay.

Ano: 1979

URL: http://archimer.ifremer.fr/doc/00306/41679/40888.pdf

Structure et importance des peuplements zooplanctoniques dans la baie d'Arcachon : milieux ouverts et lagunes aménagées de Certes

Castel, J.; Lasserre, P..

Monthly sampling for a 2-year period allowed comparisons between the communities of meiofauna living in fish ponds ("reservoirs a poissons de Certes") and those inhabiting a contiguous tidal pool ("lac de tonne"). Nematods and copepods constitute the bulk of the meiofaunal populations. The community structure of copepods is considered in detail.The communities of copepods are clearly separated between the two areas. In terms of abundance, diversity and species persistence, the meiofauna is more stable in the intertidal pool than in the fish ponds. When the seasons are well marked, the community structure of the copepods in the fish ponds is nearly equilibrated in spring, with a maximum of diversity in May-June. During high eutrophication periods, in...

Tipo: Text

Palavras-chave: Lagunes; Diversité; Distribution différentielle; Meiofaune; Copépodes; Bassin d'Arcachon; Lagoons; Diversity; Differential distribution; Meiofauna; Copepods; Arcachon Bay.

Ano: 1979

URL: http://archimer.ifremer.fr/doc/00306/41681/40890.pdf

The diversity and distribution of Heliconia (Heliconiaceae) in Brazil

Castel, J.; Courties, C..

Specific composition and distribution of the zooplankton in Arcachon Bay varie along a salinity gradient from oceanic to neritic and lagoonal conditions. A peak of density and biomass is recorded in spring due to an increase of holoplanktonic species as well as larvae of benthic Invertebrates. A second maximum of abundance is observed in autumn. The community structure of copepods and polychaets larvae is considered in detail. The diversity (Shannon index, Sanders's rarefaction) decreases from the mouth of the Bay to the inner neritic water mass. Demographic parameters indicate that the populations structure is affected by the salinity gradient. Biomass increases significantly from the oceanic water to the inner neritic water mass while the species...

Tipo: Text

Palavras-chave: Zooplancton; Copépodes; Polychètes; Diversité; Distribution différentielle; Bassin d'Arcachon; Zooplankton; Copepods; Polychaets; Diversity; Differential distribution; Arcachon Bay.

Ano: 1979

URL: http://archimer.ifremer.fr/doc/00306/41680/40889.pdf

Acta Botanica

Kress,John.

A review of the phylogenetic relationships of the Zingiberales is presented and the distribution patterns and diversity of Heliconia are discussed. Sixty-five species names have been applied to the heliconias that occur in Brazil. Of these 65 names, 28 are generally recognized synonyms. Of the remaining 37 species of Brazilian Heliconia, some controversy exists over the taxonomic status of at least eight. Two primary areas of distribution of species of Heliconia exist in Brazil: the Amazon basin (21 species) and the Atlantic coastal forest (20 species).

Levantamento da fauna de abelhas silvestres na "zona da mata" de Minas Gerais: III. Mata secundária na região de Viçosa (Hymenoptera, Apoidea)

Palavras-chave: Zingiberales; Heliconia; Diversity; Distribution.

Ano: 1990

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061990000100011

Cure,José Ricardo; Thiengo,Marciana; Silveira,Fernando A.; Rocha,Luis B..

The outcome of a wild bee fauna survey in a secondary forest is reported. Sampling was carried out mainly on herbaceous and shrubby vegetation under and at the border of the forest. Results are compared with data collected with the same methodology from a previously surveyed grassland nearby. The secondary forest was richer in Anthophoridae and Apidae species, and less diverse in Megachilidae. Similarity between the two habitats was low. Several unidentified species of Ceratinula, Trichocerapis mirabilis and the stingless bees Melipona bicolor, M. quadrifasciata, M. marginata, Paratrigona subnuda, Scaptotrigona tubiba and S. xanthotricha, are among the species dependent on the forest environment to survive. Bee population densities in the forest understory...

Diversidade de espécies e densidade de ninhos de abelhas sociais sem ferrão (Hymenoptera, Apidae, Meliponinae) em floresta de terra firme na Amazônia central

Palavras-chave: Apoidea; Diversity; Abundance; Neotropics.

Ano: 1992

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751992000200008

Oliveira,Marcio L.; Morato,Elder F.; Garcia,Marcos V.B..

Stingless bees were collected between 1984 and 1990 in continuous forest, forest fragments and cleared areas 90 Km north of Manaus, Amazonas, Brazil. Several methods were employed. a total of 54 species of 21 genera were collected including two undescribed species of Plebeia Schwarz, 1938. The most abundant genera were Trigona Jurine, 1807; Melipona Illiger, 1806; Partamona Schwarz, 1939 and Tetragona Lepeletier, 1825. The most abundant species were Trigona crassipes (Fabricius, 1793) and T. fulviventris Guérin, 1835. Fruit fly traps baited with fragrances for euglossine bees showed to be an useful method for stingless bee collection too. The study area showed a great richness in relation to other regions of the world. However the density of nests found...

Abundância, riqueza e diversidade de abelhas Euglossinae (Hymenoptera, Apidae) em florestas contínuas de terra firme na Amazônia Central, Brasil

Palavras-chave: Diversity; Nest density; Conservation; Amazônia; Stingless bees.

Ano: 1995

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100004

Oliveira,Marcio Luiz de; Campos,Lúcio Antônio de Oliveira.

The fauna of Euglossinae bees were studied in two areas of "terra firme" continuous forest in the Central Amazon. Brazil. During one year (september/1989-august/1990) the collections were done fortnightly, using traps with eight kinds of seents baits. The traps were placed in the understory and in the tree crowns. The continuous forest of "terra firme" near Manaus are among those with the highest speeies richness of Euglossinae in the Neotropics. The species richness was higher than that found in other studies carried out in Brazil also. One study area had higher species richness and abundance, while species diversity was higher in another one. The diversity was different significally between the two areas.

Comments on plant-herbivore-parasitoid interactions in two cerrado areas of Southern Brazil

Palavras-chave: Apidae; Euglossinae; Abundance; Amazon; Diversity.

Ano: 1995

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000300009

Caldas,Astrid; Passos,Fernando de C..

This work describes some interactions between lepidopteran larvae and braconid parasitoids on a group of plants at two sites. There was no significant difference in parasitoid diversity between the sites (Shannon index, p<0.05), and similarity was 62.5%, estimated through Sorensen's index. The diversity of hosts was also not different (p<0.05), but the similarity of host diversity was only 28.5%. This suggests that the parasitoids have strategies for maintaining similar reproduction rates, population densities and communities in areas with different potential hosts.

Levantamento da fauna entomológica no estado do Paraná: II. Ctenuchidae (Lepidoptera)

Palavras-chave: Braconidae; Diversity; Community; Lepidoptera; Similarity.

Ano: 1996

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200010

Marinoni,Renato C.; Dutra,Renato R.C..

In addition to the Survey of the Entomological Fauna in Paraná State, the Ctenuchidae were studied in its ecological and faunistic aspects. The material was collected using one light trap installed in eight different sites of the State: Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava and Fênix, from October 1986 to September 1987. The total number of specimens and means values of capture were analyzed. Indices of diversity and evenness were used to discuss richness and dominance of species in each locality. Besides using ecological indices, the data were also compared by Clustering Analysis, Principal Coordinate Analysis and Linear Correlation Coefficient. The results were compared with meteorological and...

Fitossociologia de uma mata de galeria na Fazenda Sucupira do Cenargen, Brasilia/DF.

Palavras-chave: Ctenuchidae; Faunistic; Diversity; Community structure; Paraná State.

Ano: 1996

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000200014

Infoteca-e

SAMPAIO, A. B.; NUNES, R. V.; WALTER, B. M. T..

bitstream/item/177038/1/ID-2546.pdf

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Diversidade; Diversity; Gallery forest; Mata Ciliar; Vegetação; Phytosociology.

Ano: 1997

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/182834

Distribution quantitative de la macrofaune benthique du peuplement des cailloutis dans le détroit du Pas de Calais (Manche orientale, France)

Analyse des captures des pêcheries marines et lagunaires d'Egypte en liaison avec la construction du haut barrage d'Assouan

Migne, A; Davoult, D.

Because of strong tidal currents, the bottom of the Dover Strait consists of coarse sediment which is colonized by a pebble community. A quantitative study, based on 0.1 m(2) quadrat samples taken by divers, was conducted on this community to establish the richness of benthic macrofauna (in terms of biomass and diversity) and to provide conclusive data on global community structure (spatial and temporal heterogeneity, trophic structure). Eight samples were taken between June 1992 and June 1993, eight replicates being taken on each sampling visit. One hundred and one species were identified, in 10 zoological groups, and a mean biomass of 281 g.m(-2) (ash free dry weight) was calculated. The Shannon diversity index was low (H' = 1.24) because of the strong...

Tipo: Text

Palavras-chave: Macrobenthos; Biomass; Trophic structure; Diversity; Spatial heterogeneity.

Ano: 1997

URL: http://archimer.ifremer.fr/doc/00093/20409/18076.pdf

Colonização de clareiras naturais na floresta atlântica no sudeste do Brasil

Bebars, Mi; Lasserre, G; Hoai, Tl.

Annually exploited communities from the Nile delta and two nearby lagoons (Manzalah and Edkou) were monitored from 1962 to 1989. The changes in community structure were analysed as a function of two events: fishing pressure growth (motorized fishing vessels) which increased by a factor of 19 between 1952 and 1962; and the construction of the Aswan Dam, which was built between 1965 and 1969, reducing the flow of the Nile by 90 %. Before the construction of the dam, increased sea fishing pressure led to a decline in landings from 33,832 tons in 1962 to 8,522 tons in 1969, but with no structural change in the exploited community. However, following completion of the dam in 1969, the community structure changed and a significant correlation was detected...

Tipo: Text

Palavras-chave: Impact; Aswan Dam; Yield; Fisheries; Diversity; Lagoon.

Ano: 1997

URL: http://archimer.ifremer.fr/doc/00093/20406/18073.pdf

Rev. Bras. Bot.

Tabarelli,Marcelo; Mantovani,Waldir.

RESUMO - (Colonização de clareiras naturais na floresta Atlântica no sudeste do Brasil). Em duas florestas na encosta atlântica no sudeste do Brasil, foi analisada a colonização vegetal de 23 clareiras naturais (34-256 m²). Nos dois locais de estudo, as clareiras pequenas foram as mais abundantes, cobrindo a maior parte da superfície ocupada por este tipo de perturbação (100-66%). As clareiras apresentaram padrão comum de colonização, caracterizado pela dominância de indivíduos e espécies tolerantes à sombra, principalmente aquelas de sub-bosque. Não observou-se relação entre tamanho das clareiras, composição de guildas de regeneração e a abundância das espécies dominantes. Os resultados sugerem que a floresta atlântica possui riqueza reduzida de espécies...

Colonização ictiofaunística do Reservatório de Itaipu e áreas adjacentes

Palavras-chave: Treefall gaps; Colonization; Diversity; Atlantic forest.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000100006

Benedito Cecilio,Evanilde; Agostinho,Angelo Antonio; Júlio Jr,Horácio Ferreira; Pavanelli,Carla Simone.

Samples were taken from November 1983 to October 1989 in sites along the main body of the Itaipu reservoir and its area of influence to evaluate the impacts of this reservoir on ichthyofauna and to provide information about the colonization process in the dammed area. The ichthyofaunistic similarity between the sites was analysed during the studied period. Spatial and temporal variations of the ichthyofaunistic diversity were also done, using Shannon-Winer Index of Diversity, eveness and species richness, comparing the results with those obtained before the damming. After Itaipu Reservoir formation, it was observed significative alteration in specific abundance and ichthyofauna structure of the Paraná River, with an increase in species number in ali...

Levantamento da fauna entomológica no estado do Paraná III: Saturniidae (Lepidoptera)

Palavras-chave: Ichthyofauna; Paraná river; Itaipu reservoir; Diversity; Similarity.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100001

Marinoni,Renato C.; Dutra,Renato R.C.; Casagrande,Mirna M..

In addition to the Survey of the Entomological Fauna in Paraná State, the family Saturniidae was studied in its ecological and faunistic aspects. The material was captured using one light trap installed in eight different sites of the State: Antonina, São José dos Pinhais, Colombo, Ponta Grossa, Telêmaco Borba, Jundiaí do Sul, Guarapuava and Fênix, from October 1986 to September 1987. The total number of specimens and means values of capture were analyzed. Indices of diversity and evenness were used to discuss richness and dominance of species in each locality. Besides using ecological indices, the data were also compared by Clustering Analysts, Principal Coordinate Analysis, Minimum Spanning Tree and Linear Correlation Coefficient. The results were...

Diversity and abundance of litter frogs at altitudinal sites at Serra do Japi, southeastern Brazil

Palavras-chave: Saturniidae; Faunistic; Diversity; Community structure; Paraná.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000200016

Giaretta,Ariovaldo Antonio; Sawaya,Ricardo J.; Machado,Glauco; Araújo,Márcio S.; Facure,Kátia G.; Medeiros,Hermes F. de; Nunes,Renato.

It was sampled the litter frogs at altitudinal sites of a semideciduous mesophytic forest located at Sena do Japi (Jundiaí, São Paulo, 23º17'S, 47º00'W, 800-1300m altitude, 1500mm rain/year). Forty two plots of 8x8m were sampled in the dry/cold season of 1995: 21 at a Higher Site (HS) (1000m) and 21 at a Lower Site (LS) (850m). The plots were evenly located near, mid-distance, and far from the stream-bed. It was found a total of five species, three at each site. Eleutherodactylus guentheri comprised 83% of the individuals at HS and E. juipoca 67% at LS. The density of individuals was higher at HS and near the stream. The greater density at HS may be due to greater humidity there, provided by mist. The frogs may aggregate in wetter places (stream edges) in...

Diversidade da ictiofauna de poças de maré da praia do Cabo Branco, João Pessoa, Paraíba, Brasil

Palavras-chave: Brachycephalus; Eleutherodactylus; Hyla; Litter frogs; Diversity; Southeastern Brazil.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000200008

Rosa,Ricardo S; Rosa,Ierecê L; Rocha,Luiz A.

A survey of the tidal pool fish community was carried out between february/1987 and january/1988, at Cabo Branco Beach, João Pessoa, Paraíba, Brazil. Specimens were collected monthly at low tide, using rotenone. A total of 3143 specimens was obtained. The most speciose families were Ophichthidae (14% of the total number of species), Mugilidae (11%) and Muraenidae (9%), and the most representative ones in number of individuais were Gobiidae (48%), Pomacentridae (13%) and Labrisomidae (10%). The main resident species were Bathygobius soporator (Valenciennes, 1837) and Abudefduf saxalilis (Linnaeus, 1758). The presence of a large number of juveniles in the pools indicated the importance of the studied sites as nursery áreas for several fish species.

Polychaete diversity at tropical Atlantic deep-sea sites: environmental effects

Palavras-chave: Ichthyofauna; Diversity; Paraíba; Brazil.

Ano: 1997

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100019

Cosson-sarradin, Nathalie; Sibuet, Myriam; Paterson, Glj; Vangriesheim, Annick.

This study assesses how differences in nutrient flux and bottom currents affect the diversity and trophic structure of deep-sea polychaete communities from the tropical northeast Atlantic at 20 degrees to 21 degrees N latitude. Faunal assemblages were studied from 3 sets of USNEL box cores (0.25 m(2)) taken at depths of 1700, 3100 and 4600 m. In terms of primary productivity, the cores were taken beneath water which is eutrophic, mesotrophic and oligotrophic, respectively. Total polychaete abundance, abundance of dominant species, and faunal similarity and diversity were compared among the 3 sites. Polychaete abundance decreased with increasing depth. Community structure reflected environmental characteristics as well as the influence of coastal upwelling....

Tipo: Text

Palavras-chave: Deep sea; Tropical Atlantic; Diversity; Polychaete community; Environmental conditions.

Ano: 1998

URL: http://archimer.ifremer.fr/doc/00179/28978/27398.pdf

Fungos microscópicos da Mata Atlântica de Paranapiacaba, São Paulo, Brasil

Rev. Bras. Bot.

Schoenlein-Crusius,Iracema Helena; Milanez,Adauto Ivo.

(Fungos microscópicos da Mata Atlântica de Paranapiacaba, São Paulo, Brasil). Na Mata Atlântica de Paranapiacaba, no estado de São Paulo, 1770 ocorrências de diferentes táxons de fungos foram registradas de julho de 1988 a maio de 1990. Para a água do riacho foram reportadas 319 ocorrências, 405 para o solo, 565 em folhas submersas de Alchornea triplinervia (Spreng.) M. Arg. e 481 em folhas dispostas sobre o solo. Mastigomycotina representou 316 ocorrências com 20 espécies, Zygomycotina 266 ocorrências com 13 espécies, Deuteromycotina 1107 ocorrências com 82 táxons e Ascomycotina 81 ocorrências com oito espécies. Os fungos foram isolados pelos métodos da lavagem de discos de folhas, placa de solo e iscagem utilizando substratos quitínicos, queratínicos e...

Richness and diversity of aphids (Homoptera, Aphididae) along an altitudinal gradient in the Serra do Mar, Paraná, Brazil

Palavras-chave: Fungi; Atlantic rainforest; Diversity.

Ano: 1998

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000100007

Lazzarotto,Crisleide Maria; Lázzari,Sonia Maria Noemberg.

The lack of bioecological studies on aphids in regions with complex floristic and faunistic structure, such as the Atlantic Tropical Rain Forest, lead to the initiation of this research. The objectives were to determine species richness and diversity of aphids and to investigate the influence of altitude and environmental perturbations on aphid populations. The collections were made with yellow pan traps at 11 sites with altitudes from -10 m to 1000 m above sea level (a.s.l.), in the Serra do Mar, Paraná, Brazil, from December 1993 to December 1994. Richness and diversity of aphids were greatest at 85 m a.s.l. This site was characterized by three distinct floral communities: primary vegetation, secondaiy vegetation in successional stages, and secondary...