Downloads provided by UsageCounts
The combined impact of biocontrol agents on the seed regenerative capacity, i.e. seed production, seed-rain, soil seedbank, and seedling density, of Lantana camara L. (sensu lato) (Verbenaceae), was measured in the field in an inland area of South Africa. The study was conducted on ten plots (20 x 50 m each) along part of the Sabie River catchment. The most abundant biocontrol agents at the site were Aceria lantanae (Cook) (Acari: Trombidiformes: Eriophyidae), Hypena laceratalis Walker (Lepidoptera: Noctuidae), Octotoma scabripennis Guérin-Méneville (Coleoptera: Chrysomelidae), Ophiomyia camarae Spencer (Diptera: Agromyzidae), and Teleonemia scrupulosa Stål (Hemiptera: Tingidae). Using the insecticidal exclusion method, comparisons of seed regenerative capacity were made between exclusion (insecticide treated) and biocontrol (untreated) plants over a three-year period. Lantana camara seed production was slightly lower in biocontrol (5831 ± 844 seeds) compared to exclusion plants (6718 ± 1571 seeds), seed-rain density was significantly lower in biocontrol (1080 ± 122 seeds m-2) compared to exclusion plants (1419 ± 154 seeds m-2). Seed germination was lower in biocontrol (98 ± 41 seeds m-2) compared to exclusion plants (116 ± 38 seeds m-2). Seedling density was higher in biocontrol (36 ± 14 seedlings m-2) compared to exclusion plants (32 ± 11 seedlings m-2). Adult plants appeared to suppress their own seedlings. This study showed that the impact of the current suite of biocontrol agents on the recruitment potential of L. camara is minimal, emphasizing the need for additional agents, better adapted to the cooler high altitude inland environmental conditions.
Biocontrol agent, insecticidal exclusion, invasive alien plants, seedling density, seed-rain, soil seedbank
Biocontrol agent, insecticidal exclusion, invasive alien plants, seedling density, seed-rain, soil seedbank
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
| views | 8 | |
| downloads | 1 |

Views provided by UsageCounts
Downloads provided by UsageCounts