Pollination of lark daisy on roadsides declines as traffic speed increases along an Amazonian highway.
Plant Biol (Stuttg)
; 18(3): 542-4, 2016 May.
Article
en En
| MEDLINE
| ID: mdl-26809110
ABSTRACT
Ecological disturbances caused by roadways have previously been reported, but traffic speed has not been addressed. We investigate effects of traffic speed on pollination of Centratherum punctatum (Asteraceae) along an Amazonian highway roadside. We hypothesised that frequency of flower visitors, duration of single visits and pollen deposition on stigmas will vary negatively as traffic speed increases. After measuring vehicle velocities, we classified three road sections as low-, mid- and high-velocity traffic. The main pollinator bee, Augochlora sp., visited C. punctatum inflorescences with decreasing frequency from low- to high-velocity roadside sections, whereas the nectar thief butterflies did the opposite. Duration of single visits by bees and butterflies was shorter, and arrival of pollen on C. punctatum stigmas was lower, in high- than in low-velocity roadside. Air turbulence due to passing vehicles increases with velocity and disturbed the flower visitors. Overall, results support that traffic velocity negatively affects foraging of flower visitors and the pollination of C. punctatum on roadsides.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Abejas
/
Asteraceae
/
Ecología
/
Polinización
Límite:
Animals
Idioma:
En
Revista:
Plant Biol (Stuttg)
Asunto de la revista:
BOTANICA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Brasil