The effect of management operations on the demography of Eucalyptus globulus seedlings
| Autor: | Brad M. Potts, Manuel Nunes, Joaquim S. Silva, Ernesto Deus, Mauro Nereu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
biology food and beverages Sowing Forestry Vegetation Management Monitoring Policy and Law biology.organism_classification 010603 evolutionary biology 01 natural sciences Invasive species Predation Plant ecology Agronomy Germination Seed predation Eucalyptus globulus 010606 plant biology & botany Nature and Landscape Conservation |
| Zdroj: | Forest Ecology and Management. 453:117630 |
| ISSN: | 0378-1127 |
| DOI: | 10.1016/j.foreco.2019.117630 |
| Popis: | There has been an increased concern about the invasiveness of Eucalyptus globulus Labill. Much research has been devoted to understanding the factors influencing E. globulus recruitment. Standard management operations, performed inside and outside plantations, cause profound disturbances on soil and vegetation, potentially influence E. globulus recruitment, but have been poorly studied. This study, therefore, aims to understand the impacts of standard management operations on seeds and capsules shed prior or after such operations, and, together with weather, their influence on the germination and early survival of E. globulus seedlings. We performed a sowing experiment in Portugal using E. globulus seeds, following a full factorial design with 16 treatments, resulting from three factors: management operations (burning, soil stripping, soil harrowing and control); sowing time (before or after management operations); sowing type (sowing seeds or capsules). Each treatment was replicated 10 times, giving a total of 160 plots (0.5 × 05 m), each sown with 100 seeds or 10 capsules. Seeds and capsules were monitored for approximately one year. We also tested for the presence of seed predation close to the experimental field. Seed sowing resulted in 4.8% germination (379 seedlings), but capsule sowing resulted in only two seedlings. The seed predation experiment, showed that nearly half of the E. globulus seeds went missing, suggesting that predation may contribute to the low germination results. |
| Databáze: | OpenAIRE |
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