Results 11 to 20 of about 16,484 (181)
Amphibian loss alters periphyton structure and invertebrate growth in montane streams. [PDF]
J Anim Ecol, 2022 This paper demonstrates that amphibian loss increases periphyton biomass, causes shifts in algal assemblages and reduces invertebrate growth. It highlights the importance of protecting amphibians in order to maintain normal stream ecosystem functioning, especially in nonforested streams where periphyton in the main energy resource.
Alonso A +4 more
europepmc +2 more sources
Prioritizing conservation in sub-Saharan African lakes based on freshwater biodiversity and algal bloom metrics. [PDF]
Conserv Biol, 2022 Abstract As agricultural land use and climate change continue to pose increasing threats to biodiversity in sub‐Saharan Africa, efforts are being made to identify areas where trade‐offs between future agricultural development and terrestrial biodiversity conservation are expected to be greatest. However, little research so far has focused on freshwater
Danaher C +3 more
europepmc +2 more sources
Seasonal and intracanopy shifts in the fates of absorbed photons in central Amazonian forests: implications for leaf fluorescence and photosynthesis. [PDF]
New PhytolSummary Recent studies have shown a linear relationship between solar‐induced Chl fluorescence (SIF) and gross primary productivity (GPP) at large scales. However, this relationship diverges at finer leaf scales, particularly in tropical forests with complex canopy structures.
Ziccardi LG +10 more
europepmc +2 more sources
Community-driven variations in snow algae color modulate snow albedo reduction. [PDF]
New PhytolSummary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Almela P +4 more
europepmc +2 more sources
Wound Healing and Anti-Inflammatory Effect in Animal Models of Calendula officinalis L. Growing in Brazil. [PDF]
Evid Based Complement Alternat Med, 2012 Calendula officinalis is an annual herb from Mediterranean origin which is popularly used in wound healing and as an anti‐inflammatory agent. In this study, the ethanolic extract, the dichloromethane, and hexanic fractions of the flowers from plants growing in Brazil were produced.
Parente LM +5 more
europepmc +2 more sources
Environmental and human factors shape the trophic ecology of a widespread marine predator. [PDF]
J Anim EcolOur study reveals how environmental factors and fishing pressure influence swordfish diet, highlighting trophic shifts under future climate scenarios. We provide a novel framework to strengthen our ability to plan for and manage the redistribution of species under global change ensuring that the energetic needs of predators are met.
Fernández-Corredor E +7 more
europepmc +2 more sources
Producción de pigmentos naturales (clorofila-a) en biorrefinerias agroindustriales
Ciencia y Tecnología, 2016 El objetivo del trabajo fue evaluar la producción de clorofila-a por Aphanothece microscópica Nägeli a partir de efluentes de procesamiento de productos lácteos dentro del ámbito de una biorrefinería. Los experimentos se realizaron en biorreactores mediante cultivo heterotrófico en condiciones de pH 7.60, temperatura de 20º C y aireación continua de 1 ...
María Queiroz +4 more
openaire +2 more sources
Caracterização sazonal das águas do sistema estuarino do Caeté (Bragança-PA)
Boletim do Instituto de Pesca, 2016 Investigou-se o efeito das marés de sizígia na qualidade física, química e biológica da água de canais-de-maré, considerando a sazonalidade regional e a distribuição espacial do furo do Taici e do furo da Estiva no estuário do Caeté.
Hanna Tereza Garcia de Sousa MOURA +1 more
doaj +1 more source
Comportamento espacial da clorofila-a no reservatório de Itaparica, rio São Francisco [PDF]
Engenharia Sanitaria e Ambiental, 2015 RESUMO Na análise do estado trófico de um corpo hídrico torna-se fundamental o conhecimento da concentração de clorofila-a. Esse trabalho tem como objetivo determinar e avaliar o comportamento da clorofila-a no reservatório de Itaparica, localizado no sub-médio São Francisco.
Lopes, Helio +4 more
openaire +3 more sources
Ecología Austral, 2016 El Pasaje de Drake (DP) une los océanos Pacífico y Atlántico Sur, y actúa como un estrechamiento físico de la mayor corriente del Océano Mundial, la corriente circumpolar antártica (ACC).
Flavio Emiliano Paparazzo
doaj +1 more source