Post provided by Paula Pappalardo (with contributions from Elizabeth Hamman, Jim Bence, Bruce Hungate & Craig Osenberg)
Esta publicación también está disponible en español.
You spent months carefully collecting data from articles addressing your favorite scientific question, you have dozens of articles neatly arranged on a spreadsheet, you found software or code to analyze the data, and then daydream about how your publication will be the most cited in your field while making cool plots. If that sounds familiar, you have probably done a meta-analysis. Meta-analysis uses statistical models to combine data from different publications to answer a specific question.
What you may not have realized when going down the meta-analysis rabbit hole, is that small, seemingly inconsequential, choices can greatly affect your results. If you want to know about one of them lurking behind the scenes… read on!
Pasaste meses laboriosamente colectando datos de artículos científicos acerca de tu pregunta favorita, tienes decenas de artículos perfectamente organizados en una base de datos, ya encontraste el programa o código para analizar los datos, y entonces imaginas como tu publicación va a ser la más citada en tu campo de investigación mientras haces unos gráficos lindísimos. Si esto te suena familiar, seguramente has hecho un meta-análisis. Un meta-análisis usa modelos estadísticos para combinar datos de distintas publicaciones para responder a una pregunta específica.
Lo que quizás no te diste cuenta mientras navegabas los pasos del meta-análisis, es que pequeñas decisiones (a veces pareciendo de muy poca importancia) pueden tener grandes efectos en los resultados. Si quieres saber más acerca de una de estas decisiones en particular… ¡sigue leyendo!
Estuaries are biological hotspots and by far the most productive ecosystems on our planet. The shallow waters where streams and rivers meet the sea often harbour a rich terrestrial and aquatic flora and are home to many animals. They’re important feeding and reproduction areas for a diverse array of wildlife such as birds and fish, which can include both freshwater and marine species. A large portion of the world’s marine fisheries today depend on the ecosystem services of estuaries; it has been estimated that well over half of all marine fishes develop in the protective environment of an estuary. Historically, humans have been attracted to these large expanses of shallow water that could sustain their basic needs. Nowadays, these estuaries also have economic value as recreational and touristic destinations as for example fishing, boating and swimming spots.
However, our understanding of how estuaries function and sustain this amount of biodiversity is limited. As is the case for most ecosystems on our planet, estuaries are under increasing pressure from human activities. Estuaries are subjected to intensive land reclamation and developments like harbours and aquacultural farms. They also receive excessive amounts of of nutrients, soil and organic matter from intensive farms and urban landscapes via small streams and large rivers. These stressors are accentuated by environmental changes such as sea level rise, increasing water temperatures and extreme weather conditions causing droughts and flooding. Continue reading →