Habilidade Competitiva De Arroz Em Convivência Com Arrozvermelho Sob Diferentes Concentrações De Nitrogênio

Agostinetto, Dirceu; Nohatto, Marcos André; Tarouco, Camila Peligrinotti; Perboni, Lais Tessari; Ulguim, André da Rosa

doi:10.21206/bjsa.v7i4.453

Cited by 1 publication

(1 citation statement)

References 14 publications

(21 reference statements)

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“…It is known that the interaction strength varies between the pairs of species involved (Case et al 2016;Farias et al 2020), and these interactions can affect the fitness of organisms. The more similarities between species, the more they compete for the same resources, making it difficult for them to coexist on the same site (Powell et al 2013;Kraft et al 2015;Agostinetto et al 2017). However, even though the similarity can be assessed through functional characteristics, and thus influence the coexistence and help to predict the invasion impacts at the species level (Case et al 2016), these characteristics have been rarely considered in studies that assess changes in the community after the biological invasion (Molinari & D'Antonio 2014).…”

Section: Introductionmentioning

confidence: 99%

Do native plant species functionally similar to invasive species suffer more impacts from the invasion in seasonally dry tropical forests?

et al. 2022

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We tested the hypothesis that of the species studied in the Brazilian Semiarid, the ones most functionally similar to tree Azadirachta indicawould be more affected by this exotic species during germination and early development. At first, we produced a crude extract of A. indica fresh leaves in six different dilutions. We placed 25 seeds of four native species ( Cenostigma pyramidale, Libidibia ferrea, Mimosa caesalpiniifolia, and Amburana cearensis) to germinate in Petri dishes for each dilution, with four replicates for each species. We assessed: radicle length, emergence percentage, emergence speed index, and mean emergence time. We conducted an experiment in a greenhouse to assess how the exotic plant affected the development of individual plants of the studied species. We planted five seeds of each native species alone and five in interaction with the exotic species using ten 20-l buckets. The experiment lasted four months, and the functional attributes of the individuals were collected. Among the native species analyzed, according to the cluster analysis using the functional attributes of the species planted alone, M. caesalpiniifolia, C. pyramidaleand L. ferreawere functionally more similar to the exotic species. In the germination experiment, the extract affected only root length, regardless of the functional similarity. We noticed that only M. caesalpiniifoliahad its early development strongly inhibited when planted in interaction with the exotic species. Although the functional similarity between the exotic and the native species did not influence germination, it negatively affected the development.

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