Results 71 to 80 of about 682,331 (176)

Fish loss in tropical coastal ecosystems can jeopardise nutrient supply to traditional fishing communities: A case study from Northeast Brazil

open access: yesPeople and Nature, Volume 8, Issue 5, Page 1248-1260, May 2026.
Abstract Fisheries constitute one of the major benefits that oceans provide for people. Yet anthropogenic pressures and global changes are disrupting coastal systems, eroding marine biodiversity and threatening the food security of traditional populations.
Fabricio C. Albuquerque   +4 more
wiley   +1 more source

Alcance do bloqueio e do ataque de voleibol master da categoria 35 anos ou mais

open access: yesRevista Brasileira de Prescrição e Fisiologia do Exercício, 2018
O objetivo do estudo foi de identificar o alcance do bloqueio e do ataque do voleibol master da categoria 35 anos ou mais. O estudo foi composto por 15 jogos ou 33 sets do voleibol master. As partidas foram filmadas atrás da quadra.
Nelson Kautzner Marques Junior
doaj  

Analysis of variance of primary data on plant growth analysis Análise de variância dos dados primários na análise de crescimento vegetal

open access: yesPesquisa Agropecuária Brasileira, 2003
Plant growth analysis presents difficulties related to statistical comparison of growth rates, and the analysis of variance of primary data could guide the interpretation of results.
Adelson Paulo Araújo
doaj   +1 more source

Estatística (a mediadora) : do diagnóstico à monitorização social [PDF]

open access: yes, 2017
As organizações necessitam cada vez mais de ter um conhecimento mais aprofundado, e em tempo oportuno, dos seus problemas, com vista à identificação dos recursos e dos meios de ação existentes. A crescente complexidade das problemáticas sociais coloca um
Silva, Osvaldo Dias Lopes da
core  

Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer   +3 more
wiley   +1 more source

Determining sexual dimorphism in frog measurement data: integration of statistical significance, measurement error, effect size and biological significance

open access: yesAnais da Academia Brasileira de Ciências, 2005
Several analytic techniques have been used to determine sexual dimorphism in vertebrate morphological measurement data with no emergent consensus on which technique is superior. A further confounding problem for frog data is the existence of considerable
Lee-Ann C. Hayek, W. Ronald Heyer
doaj   +1 more source

Climate‐induced shifts in long‐term tropical tree reproductive phenology: Insights from species dependent on and independent of biotic pollination

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1286-1298, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The dependence on biotic pollination may constrain plant phenological responses because flowering time ultimately defines reproductive success. We proposed a local‐scale study combining long‐term phenology and experimental data to evaluate how a key functional trait—the
Amanda Eburneo Martins   +3 more
wiley   +1 more source

Coffee, cash, and consumption: rethinking commodity production in the global south [PDF]

open access: yes, 2018
This essay reflects on the study of coffee production in Angola, following research in business and missionary archives in the Netherlands and the United Kingdom. After observing that African coffee farmers were consumers of foreign goods as much as they
Vos, Jelmer
core   +1 more source

Analysis of climatic and seasonal effects on the oviposition activity of Aedes spp. females in municipalities of Paraná, Brazil

open access: yesAustral Entomology, Volume 65, Issue 2, May 2026.
Abstract Climate and environmental changes driven by global economic activities directly affect the physiology of insect vectors, such as Aedes spp., accelerating their development, increasing the number of generations per season and increasing the risk of transmission of aetiological agents. This study aimed to analyse how local climatic variables and
Ana Carolina Felicio‐Alves   +4 more
wiley   +1 more source

Sítio do pica-pau amarelo: uma atividade de estatística no 2.º ciclo do ensino básico português

open access: yesIndagatio Didactica, 2018
Este trabalho apresenta como uma aluna do 5º ano de escolaridade de uma escola pública em Portugal resolveu o trabalho de férias de estatística usando o seu quotidiano como ponto de partida para a abordagem dos conteúdos.
Maria Manuel Nascimento   +2 more
doaj   +1 more source

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