Avaria-Llautureo, J. | bioRxiv Science

bioRxiv2025

CactEcoDB: Trait, spatial, environmental, phylogenetic and diversification data for the cactus family

Integrated datasets linking traits, spatial distributions, environmental variables and phylogenies are essential for comparative research, but remain limited for many plant taxa, including those which are most threatened. Cactaceae are a morphologically and ecologically diverse succulent family that are iconic components of ecosystems across the Americas, and face high extinction risk. To support future comparative research, we present CactEcoDB (The Cactus Ecological Database), an Open Access dataset of curated spatial, ecological, trait, phylogenetic, and diversification data for over 1,000 cactus species. CactEcoDB includes species-level trait data, geographic occurrence records, environmental variables, range size estimates, speciation rates, and the largest time-calibrated phylogeny of cacti to date. By integrating these diverse data in a single platform, CactEcoDB enables analyses of trait evolution, trait-environment interactions, biogeography, climatic niche evolution, and macroevolutionary dynamics in one of the most celebrated and threatened plant families.

evolutionary biology↗

bioRxiv2020

Shrinking of fish under warmer temperatures decrease dispersal abilities and speciation rates

There is an ongoing debate as to whether fish body size will decrease with global warming and how body size changes may impact dispersal abilities and speciation rates. Although theory predicts that, when fish face warmer temperatures, they grow to smaller adult sizes, see a reduction in their ability to move, and increase their probability of speciation, evaluations of such predictions are hampered owing to the lack of empirical data spanning both wide temporal and geographical scales. Here, using phylogenetic methods, temperature, and 21,895 occurrences for 158 worldwide-distributed species of fish, we show that smaller fish have occurred in warmer waters for over 150 million years and across marine and freshwater realms. Smaller fish have historically moved the shortest distances and at low speeds. In addition, small fish display the lowest probability of giving rise to new species. Further, we found that species of fish that displayed high speeds of geographical movement and rates of size evolution experienced higher rates of temperature change in their lineage. Taking these results together, global warming predicts a future where smaller fish that have reduced ability to move over aquatic systems will be more prevalent, in turn, this will result in fewer species contributing global biodiversity.

evolutionary biology↗