Herbivory and plant competition effects on the population dynamics ofNaufraga balearica, a threatened narrow endemic species of the Balearic Islands
| Autor: | Juan Rita, Joana Cursach, Eva Moragues |
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| Rok vydání: | 2013 |
| Předmět: |
Erodium
education.field_of_study biology Ecology media_common.quotation_subject Population Rare species Plant Science biology.organism_classification Competition (biology) Dactylis glomerata Threatened species Naufraga balearica Endemism education Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology. 147:508-517 |
| ISSN: | 1724-5575 1126-3504 |
| DOI: | 10.1080/11263504.2012.745456 |
| Popis: | Naufraga balearica is a caespitose member of the Umbelliferae and is endemic to Majorca. We conducted a 12-year study in which permanent plots were monitored (each plot was divided into 100 cells) to assess (1) the natural population dynamics, (2) goat herbivory (1998–2003) and (3) plant competition. Using photographs and a G-test of independence, we analysed the frequency of cells in which a species was present and, for each annual transition, the frequency of cells where the species was stable, decreased or increased for each species and treatment (plots open to herbivores vs. closed plots). The natural dynamics of this threatened species showed a clear decline at the study site. Dactylis glomerata and Erodium reichardii were the species that appeared to have the greatest effect on the presence of N. balearica, especially in the closed plots. The competition effect of neighbouring species was not homogeneous throughout the 11 annual transitions analysed, suggesting that other factors affect the dynamics... |
| Databáze: | OpenAIRE |
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