Revising the global biogeography of annual and perennial plants

no code implementations • 25 Apr 2023 • Tyler Poppenwimer, Itay Mayrose, Niv DeMalach

Overall, our analyses raise concerns for ecosystem services provided by perennials, as ongoing changes are leading to a more annuals-dominated world.

Contrasting dynamics of seed banks and standing vegetation of annuals and perennials along a rainfall gradient

no code implementations • 30 Jan 2023 • Niv DeMalach, Jaime Kigel, Marcelo Sternberg

For annuals, we hypothesized that the density of the seed bank would be more stable than the density of the standing herbaceous vegetation.

Density-dependent and independent mechanisms jointly reduce species performance under nitrogen enrichment

no code implementations • 2 Jan 2023 • David Sampson Issaka, Or Gross, Itunuoluwa Ayilara, Talia Schabes, Niv DeMalach

We found that individual biomass and population growth rates decreased with increasing sowing density in all nutrient treatments, implying that species interactions were predominantly negative.

Coexistence under hierarchical resource exploitation: the role of R*-preemption tradeoff

no code implementations • 22 Aug 2019 • Man Qi, Niv DeMalach, Tao Sun, Hailin Zhang

Thus, we developed an extension of resource competition theory to investigate partial and total preemption (in the latter, the preemptor is unaffected by species with lower preemption rank).