Results 21 to 30 of about 440 (101)

The ghost of the past anthropogenic impact: Reef-decapods as bioindicators of threatened marine ecosystems

open access: yesEcological Indicators, 2021
This study demonstrated the plasticity of reef-decapod according with the exposed anthropogenic pressure. Comparing the reef-decapods at sites with different anthropogenic pressures in two different ecoregions (tropical and subtropical reef ecotypes), we
Bruno Welter Giraldes   +4 more
doaj   +1 more source

Swimming ability of the Carybdea marsupialis (Cnidaria: Cubozoa: Carybdeidae): implications for its spatial distribution

open access: yesJournal of Zoology, Volume 324, Issue 1, Page 1-10, September 2024.
In this paper we analyzed the swimming speed, effective velocity, effective displacement index (EDI) and proficiency of juvenile to adult specimens (ranging from 1.1 to 36 mm of the diagonal bell width) of the box jellyfish Carybdea marsupialis. Abstract Although usually considered part of the plankton, cubozoans are strong swimmers.
C. Bordehore   +2 more
wiley   +1 more source

Structural changes of the phytoplankton and epiphyton in an urban hypereutrophic reservoir

open access: yesActa Limnologica Brasiliensia
: Aim This study evaluated the temporal changes of phytoplankton and epiphyton structure and their relationships with limnological factors in an urban hypereutrophic reservoir (Rasgão Reservoir, Brazil).
Lucineide Maria Santana, Carla Ferragut
doaj   +1 more source

Uso de plâncton silvestre, fermento fresco e levedura desidratada na alimentação de larvas do cascudo chinelo, Loricariichthys platymetopon (Isbrüchen & Nijssen, 1979) (Osteichthyes, Loricariidae)

open access: yesActa Scientiarum: Biological Sciences, 2008
Objetivando avaliar a utilização de diferentes alimentos para larvas do cascudo chinelo Loricariichthys platymetopon (Osteichthyes, Loricariidae), 240 larvas com cinco dias pós-eclosão foram distribuídas em 20 aquários (12 L).
Carmino Hayashi   +3 more
doaj   +1 more source

Os textos da cientista Marta Vannucci sobre o plâncton no Instituto Oceanográfico da Universidade de São Paulo (1946-1969) [PDF]

open access: yesCadernos Pagu, 2016
Resumo Seguindo a linha de pesquisa que estuda as relações ciências e gênero, este artigo visa realizar uma reflexão sobre os estudos científicos desenvolvidos pela cientista Marta Vannucci no âmbito do Instituto Oceanográfico da Universidade de São ...
Alex Gonçalves Varela
doaj   +3 more sources

Filter no more: A modified plankton sampler for rapid in‐water eDNA capture

open access: yesMethods in Ecology and Evolution, Volume 15, Issue 1, Page 60-68, January 2024.
Abstract The combination of an efficient sampling method and high‐throughput analysis of environmental DNA (eDNA) can be a powerful approach for characterising biodiversity across aquatic ecosystems. Plankton net tows are one of the oldest, simplest, and least expensive methods for seston and eDNA collection, but require laborious filtration steps ...
Xavier Pochon   +3 more
wiley   +1 more source

Abundância de tecamebas no plâncton de reservatórios do Estado do Paraná- DOI: 10.4025/actascibiolsci.v26i4.1522

open access: yesActa Scientiarum: Biological Sciences, 2008
Este trabalho teve o objetivo de investigar os padrões de distribuição espacial e temporal da abundância de tecamebas (Rhizopoda) no plâncton de diferentes reservatórios do Estado do Paraná bem como a importância de fatores hidrodinâmicos e morfométricos
Luiz Felipe Machado Velho   +4 more
doaj   +1 more source

Plâncton, Artemia sp, dieta artificial e suas combinações no desenvolvimento e sobrevivência do quinguio (Carassius auratus) durante a larvicultura

open access: yesActa Scientiarum: Biological Sciences, 2008
O objetivo deste estudo foi verificar a influência do uso de diferentes alimentos sobre o desenvolvimento de larvas de quinguio (Carassius auratus), assim como determinar o melhor manejo alimentar. O delineamento experimental utilizado foi o inteiramente
Claudemir Martins Soares   +4 more
doaj   +1 more source

Influence of environmental variables on the diatom communities of oligotrophic reservoirs for public water supply (Guarulhos, Southeast Brazil)

open access: yesActa Limnologica Brasiliensia, 2018
Aim: Our study aimed at analyzing the diatom community structure of the plankton, periphyton, and surface sediments, and their relationship with the environmental variables of two reservoirs, Tanque Grande and Cabuçu, located in the city of Guarulhos ...
Simone Alves de Oliveira   +1 more
doaj   +1 more source

Keratella lenzi (Hauer, 1953): a new occurrence for Acre State, Brazil, specifically in Igarapé Jesumira located in Parque Nacional da Serra do Divisor

open access: yesBiotemas, 2010
Keratella lenzi (Hauer, 1953): uma nova ocorrência no estado do Acre, Brasil, especificamente no Igarapé Jesumira localizado no Parque Nacional da Serra do Divisor.
Erlei Cassiano Keppeler   +5 more
doaj   +1 more source

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