Results 11 to 20 of about 46,938 (162)
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
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
Atividade da redutase do nitrato e fluorescência da clorofila a em mamoeiro [PDF]
Revista Brasileira de Fruticultura, 2008 O objetivo do presente trabalho foi correlacionar a atividade da redutase do nitrato e a eficiência fotoquímica máxima do fotossistema II (FSII), expressa pela razão F V/F M (F V = fluorescência variável e F M = fluorescência máxima), em mamoeiro (Carica papaya L.) cv. Tainung 01 e Sunrise Solo 72/12 em condições de campo.
Fontes, Renata Venturim +3 more
openaire +3 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
Índices de qualidade da água da Ilha de Mosqueiro-PA [PDF]
Revista DAE, 2016 O aumento da população, aliado ao processo de urbanização desordenado, é responsável por grande parte da poluição dos corpos hídricos. As praias da Ilha de Mosqueiro (Belém-PA) são uma das principais alternativas de lazer da população local e, por isso ...
Marcus Vinicíus Tavares de Miranda +3 more
doaj +1 more source
Revista de Investigaciones Marinas, 2023 Se analiza la composición, abundancia y distribución del fitoplancton mayor de 20 μm y de la clorofila a obtenidos en las aguas oceánicas al sur de Cuba, durante los cruceros realizados en el 1989 y en el 2005.
Roberto Pérez de los Reyes +3 more
doaj