Littoral
Mostrando 1-12 de 121 artigos, teses e dissertações.
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1. Effects of the introduction of an omnivorous fish on the biodiversity and functioning of an upland Amazonian lake
RESUMO A introdução de espécies não nativas é uma ameaça aos ecossistemas de água doce. Embora a onivoria e a predação intraguilda sejam comuns nesses sistemas, os efeitos da introdução de peixes onívoros nas comunidades pelágicas e litorâneas é pouco conhecido. Nós testamos as previsões da teoria da teia trófica considerando os efeitos da
Acta Amaz.. Publicado em: 12/08/2019
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2. The structuring role of macrophytes on plankton community composition and bacterial metabolism in a large subtropical shallow lake
Resumo Objetivo Nós objetivamos investigar mudanças nos principais grupos do plâncton (bacterioplâncton, fitoplâncton e zooplâncton) e no metabolismo do bacterioplâncton ao longo de um transecto cobrindo uma zona litorânea dominada por macrófitas para uma zona pelágica dominada por fitoplâncton na lagoa Mangueira, uma lagoa extensa, rasa e subtro
Acta Limnol. Bras.. Publicado em: 03/06/2019
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3. Occurrence of concavities on the lorica of two species of Testudinella (Rotifera, Monogononta, Testudinellidae)
Resumo: Testudinella é um táxon de Rotifera amplamente distribuído no Brasil. Em recentes coletas em lagos marginais conectados ao rio Paranapanema (São Paulo, Brasil), nós encontramos espécimes de Testudinella mucronata e T. patina com concavidades em suas lóricas. O objetivo do estudo foi descrever as concavidades observadas em indivíduos de ambas
Biota Neotrop.. Publicado em: 21/02/2019
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4. Distribution of aquatic macrophytes along depth gradients in Lajeado Reservoir, Tocantins River, Brazil
Resumo Objetivo O presente estudo investigou a diversidade de macrófitas aquáticas na zona litorânea do reservatório de Lajeado, rio Tocantins. O objetivo principal foi caracterizar variações espaciais na riqueza de espécies, composição e abundância em gradientes de profundidade. Métodos A amostragem de macrófitas ocorreu no final do período
Acta Limnol. Bras.. Publicado em: 18/02/2019
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5. Changes in the taxonomic structure of periphytic algae on a free-floating macrophyte (Utricularia foliosa L.) in relation to macrophyte richness over seasons
ABSTRACT Periphyton has a strong relationship with aquatic macrophytes, which are key components of spatial heterogeneity in the littoral zone. We evaluated the relationship between the community structure of periphytic algae on Utricularia foliosa and macrophyte richness and coverage and limnological variables in a shallow reservoir. Water sampling for phys
Acta Bot. Bras.. Publicado em: 30/07/2018
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6. New species and first record of Alloniscus Dana, 1854 (Isopoda: Oniscidae: Alloniscidae) from Brazil
ABSTRACT The genus Alloniscus Dana, 1854 includes 23 known species occurring exclusively in littoral habitats. The genus has never been recorded from the Atlantic coastal region of the Americas. This work describes the new species Alloniscus buckupi n. sp. from João Pessoa, Paraíba, Brazil, and provides the first record of the genus from the Atlantic coast
Nauplius. Publicado em: 21/06/2018
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7. New records of Cladocera (Crustacea: Branchiopoda) from the Tomo River, Vichada, Colombia
Abstract Five species of cladocerans are reported from the Tomo River, Vichada, Colombia. Zooplankton samples were collected from the littoral zone with vegetation (Campsiandra comosa Benth). Three of them, namely Streblocerus pygmaeus Sars, 1901, Disparalona cf. hamata (Birge, 1879) and Alona isabellae Sousa, Elmoor-Loureiro and Santos, 2016 are new to the
Nauplius. Publicado em: 15/03/2018
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8. Forecasting the impact of an invasive macrophyte species in the littoral zone through aquatic insect species composition
ABSTRACT Invasive macrophytes threaten freshwater ecosystem biodiversity. We analyzed the impact of the invasive white ginger lily (Hedychium coronarium J. König, Zingiberaceae) on aquatic insect assemblages living in the littoral zone of a tropical reservoir. We took aquatic insect samples in the littoral zone on four main vegetal profile banks: white ging
Iheringia, Sér. Zool.. Publicado em: 27/11/2017
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9. A Blue BRICS, Maritime Security, and the South Atlantic
Abstract Analysts frequently label the BRICS grouping of states (Brazil, India, Russia, China, and South Africa) as primarily an economic club emphasising economic performances as primary objectives. Co-operation of international groupings are rarely, if ever, set within the context of their access to maritime interests, security, and benefits. A second void
Contexto int.. Publicado em: 2017-08
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10. Brazilian Policy and the Creation of a Regional Security Complex in the South Atlantic: Pax Brasiliana?
Abstract Over the past five years, the South Atlantic region has become a central element of Brazilian security policy, with Brazil actively supporting the notion of a trans-oceanic security consciousness involving African littoral states. It has invested in diplomatic initiatives such as the Zone of Peace and Cooperation of the South Atlantic (ZPCSA, or ZOP
Contexto int.. Publicado em: 08/05/2017
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11. Population dynamics of Rimapenaeus constrictus (Stimpson, 1874) (Penaeoidea) on the southeastern Brazilian coast: implications for shrimp fishing management from a 5-year study on a bycatch species
ABSTRACT This is the first study to evaluate in broad spatiotemporal scales the growth parameters and population structure of Rimapenaeus constrictus, a barely damaged species composing the bycatch from shrimp fishing in the Western Atlantic. The abundance and size-class frequency distribution, growth, longevity and sex ratio were evaluated from monthly samp
An. Acad. Bras. Ciênc.. Publicado em: 02/05/2017
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12. The invasive white ginger lily ( Hedichium coronarium ) simplifies the trait composition of an insect assemblage in the littoral zone of a Savanna reservoir
ABSTRACT The invasive white ginger lily (Hedichium coronarium - J. Köenig, 1783) simplifies the trait composition of an insect assemblage in the littoral zone of a Savanna reservoir. Invasive plants are believed to shift the trait composition of aquatic insects dwelling in banks of lentic ecosystems. In this study, we analyzed the relationship between the p
Rev. Bras. entomol.. Publicado em: 2017-01