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| Boaventura,Maria Gabriela; Pereira,Cássio Cardoso; Cornelissen,Tatiana. |
| ABSTRACT Sessile and host-specific herbivores, such as gall-inducing insects, are usually patchily distributed within the populations of their host plants, and it has been suggested that both inter- and intra-plant variation affect gall abundance, distribution and survivorship. Variation in plant traits, such as size and architecture, has been previously demonstrated as a determinant of gall distribution. We examined the influence of architectural complexity of the tropical plant Galianthe brasiliensis (Rubiaceae) on the abundance of the stem-galler Lopesia sp. (Diptera, Cecidomyiidae) along an elevation gradient where both insect and plant were distributed. A total of 120 plants were sampled along the gradient and more than 580 galls were counted, while... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Elevation gradient; Galls; Insects; Plant architecture hypothesis; Plant quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400670 |
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| ROJAS,ISABEL; BECERRA,PABLO; GÁLVEZ,NICOLÁS; LAKER,JERRY; BONACIC,CRISTIÁN; HESTER,ALISON. |
| Human impact such as forest fragmentation and degradation may have strong effects on native and exotic plant communities. In addition, these human-caused disturbances occur mostly in lowlands producing greater fragmentation and degradation there than in higher elevations. Plant invasion should be greater in more fragmented and degraded forests and hence lowlands should be more invaded than higher elevations. In turn, native species richness should be negatively related to fragmentation and degradation and hence greater in higher elevations within a forest type or elevation belt. We assessed these hypotheses in an Andean temperate forest of southern Chile, Araucanía Region. We recorded the vascular plant composition in twelve fragments of different size,... |
| Tipo: Journal article |
Palavras-chave: Fragmentation; Forest degradation; Elevation gradient; Invasion; Plant diversity. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200006 |
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