Research Group on Biological Invasions

@bioinv.bsky.social

The Biological Invasions #Research Group (BioInv) is formed by #ecologists from the University of Alcalá #UAH. It aims at improving the knowledge about the consequences of biological #invasions on #ecosystems. https://especiesinvasoras.weebly.com/

Hydrology Paper of the Day @bioinv.bsky.social on how leaf litter from native and exotic species of trees in Spain affect aquatic snails: ecotoxicology and leaf extract concentrations; differences between deciduous and evergreen trees; and lab experiments showing mortality and changes in homeostasis

Research Group on Biological Invasions@bioinv.bsky.social · 4mo ago

Nuevo artículo liderado por Alberto Romero-Blanco y publicado en Aquatic Ecology #GrupoInvasionesBiológicas #ecology #exoticspecies #invasivespecies #trees #aquaticecology #biologicalinvasions link.springer.com/article/10.1...

Nuevo artículo liderado por Alberto Romero-Blanco y publicado en Aquatic Ecology #GrupoInvasionesBiológicas #ecology #exoticspecies #invasivespecies #trees #aquaticecology #biologicalinvasions link.springer.com/article/10.1...

Impacts of aqueous extracts of tree leaves on the aquatic snail Potamopyrgus antipodarum: exploring the roles of leaf habit and geographic origin - Aquatic Ecology

The introduction of exotic tree species with dissimilar leaf habits or distinctive chemical composition into native communities may cause impacts on aquatic organisms, yet the relative influence of leaf habit and geographic origin on those impacts remain poorly understood. In this study, we experimentally explored the ecotoxicological effects of aqueous leaf litter extracts from 15 tree species differing in leaf habit (deciduous vs evergreen) and geographic origin (exotics vs natives in Spain) on the mortality and behavior of the aquatic snail Potamopyrgus antipodarum (Gray, 1843). Snails were exposed for 7 days to three leaf extract concentrations of each tree species. No mortality effects were observed at any concentration. In contrast, the behavioral responses of snails were negatively affected at the highest concentration, showing increased reaction time and reduced speed. These responses were species-specific and associated with leaf habit and chemical composition of extracts rather than geographic origin. Leaf extracts from deciduous trees caused a greater slowing down of snails than extracts from evergreen trees. Overall, our results indicate that leaf litter impacts on Potamopyrgus antiporadrum depend more on tree species identity and leaf habit than on native or exotic status, highlighting the importance of leaf traits when assessing ecotoxicological risks in freshwater ecosystems.

link.springer.com

Hydrology Paper of the Day @bioinv.bsky.social on how invasive tree species are successful in a riparian forest area: isotopes, soil, groundwater and xylem samples from a site in Guadalajara, Spain; water sources and differences in water uptake depth; and partitioning of water availability.

Research Group on Biological Invasions@bioinv.bsky.social · last yr.

New paper of @bioinv.bsky.social: #Native and #exotic #trees in a #riparian #ecosystem use water from different depths. The invasive success of #Robinia and #Ailanthus may lie in their ability to avoid competition by extracting #water from deeper zones. www.sciencedirect.com/science/arti...

En el bienio 2025-2027 realizaremos el primer escaneo de horizontes de especies invasoras para las islas Baleares y completaremos la primera lista actualizada de las especies exóticas establecidas en España, una base de datos que es sumamente necesaria para la toma de decisiones.

“Red Temática sobre Invasiones Biológicas” (InvaNET)

Cats that became infected with bird flu might have spread the virus to humans in the same household and vice versa, according to data that briefly appeared online in a report from the CDC but then abruptly vanished.

CDC Posts, Then Deletes, Data on Bird Flu Transmission Between Cats and People

The data, which appeared fleetingly online on Wednesday, confirmed transmission in two households. Scientists called on the agency to release the full report.

nytimes.com