Results 11 to 20 of about 6,957 (155)

Spatiotemporal variability of dissolved inorganic macronutrients along the northern Antarctic Peninsula (1996–2019)

Limnology and Oceanography, Volume 68, Issue 10, Page 2305-2326, October 2023., 2023
Abstract The northern Antarctic Peninsula is a key region of the Southern Ocean due to its complex ocean dynamics, distinct water mass sources, and the climate‐driven changes taking place in the region. Despite the importance of macronutrients in supporting strong biological carbon uptake and storage, little is known about their spatiotemporal ...
Thiago Monteiro, Sian F. Henley, Ricardo César Gonçalves Pollery, Carlos Rafael Borges Mendes, Mauricio Mata, Virginia Maria Tavano, Carlos Alberto Eiras Garcia, Rodrigo Kerr   +7 more
wiley   +1 more source

Ocean acidification affects pigment concentration and photoprotection of marine phytoplankton

Limnology and Oceanography, Volume 68, Issue 4, Page 831-844, April 2023., 2023
Abstract Ocean acidification produces significant changes on phytoplankton physiology that can affect their growth and primary production. Among them, a downregulation of the enzymatic activity and the production of different cellular metabolites, including chlorophyll a (Chl a), has been observed in high CO2 cultures under stable conditions.
Paulo Alcaraz‐Rocha, Júlia Puig‐Fàbregas, José Luis Garrido, Cristina Sobrino   +3 more
wiley   +1 more source

Modelling ecological communities when composition is manipulated experimentally

Methods in Ecology and Evolution, Volume 14, Issue 2, Page 696-707, February 2023., 2023
Abstract In an experimental setting, the composition of ecological communities can be manipulated directly. Starting from a pool of n species, it is possible to co‐culture species in different combinations, ranging from monocultures, to pairs, and all the way up to the full species pool.
Abigail Skwara, Paula Lemos‐Costa, Zachary R. Miller, Stefano Allesina   +3 more
wiley   +1 more source

Fisheries management influences phytoplankton biomass of Amazonian floodplain lakes

Journal of Applied Ecology, Volume 58, Issue 4, Page 731-743, April 2021., 2021
Tropical freshwaters fisheries typically assume that fish biomass is controlled by bottom‐up mechanisms, so that overexploitation of large predators would not affect overall ecosystem productivity. Our results, however, show that top‐down forces are important drivers of primary productivity in tropical lakes, above and beyond the effects of bottom‐up ...
João Vitor Campos‐Silva, Carlos A. Peres, João Henrique Fernandes Amaral, Hugo Sarmento, Bruce Forsberg, Carlos Roberto Fonseca, Steven Vamosi   +6 more
wiley   +1 more source

Microfitoplâncton de águas costeiras amazônicas: Ilha Canela (Bragança, PA, Brasil) Microphytoplankton of Amazon coastal waters: Canela Island (Bragança, Pará State, Brazil)

Acta Botânica Brasílica, 2008
Variações sazonal e nictemeral do microfitoplâncton foram estudadas em uma estação fixa (00º46'37,2''S-046º43'24,5''W), localizada em uma área costeira próxima à ilha Canela (Norte do Brasil), durante os meses de setembro e dezembro/2004 (período seco) e
Eliane Brabo de Sousa, Vanessa Bandeira da Costa, Luci Carneiro Cajueiro Pereira, Rauquírio Marinho da Costa   +3 more
doaj   +1 more source

Distribuição do Fitoplâncton no Entorno da Reserva Biológica Marinha do Arvoredo

Metodologias e Aprendizado, 2019
O fitoplâncton constitui um dos principais componentes dos sistemas aquáticos marinhos e sua distribuição é influenciada por vários fatores ambientais, tais como, nutrientes e luz, além de temperatura, turbidez e oxigênio dissolvido.
Viviane Tranker, Andrea Freire, Mathias Schramm   +2 more
doaj   +1 more source

Evaluation of the sampling methods applied to phycoperiphyton studies in the Ratones River estuary, Brazil Avaliação dos métodos de coleta aplicados no estudo do ficoperifíton no estuário do rio Ratones, SC, Brasil

Acta Limnologica Brasiliensia, 2010
AIM: The present study aimed on testing the efficiency of four sampling methods for identification and quantification applied in studies on the biodiversity and spatial-temporal distribution of the phycoperiphyton in the Ratones River estuary; METHODS ...
Bianca Vettorato, Roselane Laudares-Silva, Dávia Talgatti, Mariângela Menezes   +3 more
doaj   +1 more source

Estrutura sazonal e espacial do microfitoplâncton no estuário tropical do rio Formoso, PE, Brasil Seasonal and spatial structure of microphytoplankton in the tropical estuary of Formoso River, Pernambuco State, Brazil

Acta Botânica Brasílica, 2009
Este trabalho teve como objetivo determinar as variações espaço-temporal do microfitoplâncton e variáveis ambientais no estuário do rio Formoso, litoral sul do estado de Pernambuco.
Marcos Honorato da Silva, Maria da Glória Gonçalves da Silva-Cunha, José Zanon de Oliveira Passavante, Christiana Kelly da Silva Grego, Kátia Muniz   +4 more
doaj   +1 more source

Biomonitoring ecological status of two reservoirs of the Brazilian semi-arid using phytoplankton assemblages (Q index)

Acta Limnologica Brasiliensia, 2015
AimAssess whether the assembly index is a suitable tool for biomonitoring of aquatic ecosystems of semi-arid environment.MethodsMonthly, samples were collected between October 2011 and May 2012 in Santa Cruz do Apodi (5°43'59"S; 46" 00 119 "W) and Pau ...
Ana Paula Cardoso Silva, Ivaneide Alves Soares da Costa   +1 more
doaj   +1 more source

Structure and dynamics of phytoplankton community in the Botafogo reservoir-Pernambuco-Brazil [PDF]

, 2009
The aim of the present study was to investigate the structure and dynamics of the phytoplankton in the Botafogo reservoir-PE-Brazil. Phytoplankton assemblages were identified from current literature and density was estimated using an inverted microscope.
BITTENCOURT-OLIVEIRA, Maria do Carmo, LIRA, Giulliari Alan da Silva Tavares de, MOURA, Ariadne do Nascimento   +2 more
core   +2 more sources