Abstract
The Restinga is one of the physiognomies of the Atlantic Forest biome with the highest degree of anthropic impact, mainly due to disordered urbanization. The impacts generate habitat loss and threaten the animals and plants that inhabit this ecosystem. In the Restinga, the psammophilous vegetation have an important role in stabilizing the sandy substrate and maintaining the pollinator community. In this study, we analyzed the floral resources offered by Canavalia rosea to floral visitors between October 2019 and September 2020, in the Municipal Natural Park of Barreto’s Restinga, in Macaé, Rio de Janeiro, Brazil. Sampling was carried out from 8:00 am to 4:00 pm, covering a 250-meter transect in the sandy cord, counting the total number of open flowers and collecting visiting bees. The morphology of C. rosea flowers was described to relate to the functional traits of visitors, related to pollen and nectar collection. The pollen load of visitors was analyzed to estimate the degree of specialization in relation to C. rosea. A total of 192 individuals of 14 bee species were captured. There was a significant relationship between the availability of floral resources, measured by the number of open flowers and the richness and abundance of bees. The greatest richness of bees was observed between January and March and the greatest abundance in January. The most frequent visiting genera in C. rosea were Eufriesea, Centris and Xylocopa. The greatest richness of pollen types was observed in Eufriesea species. Most Xylocopa individuals showed C. rosea pollen. In this study, the importance of C. rosea as a source of floral resources for fourteen species of solitary bees was demonstrated. The data generated increases the knowledge about the ecological patterns of C. rosea and its floral visitors and may contribute to the maintenance and expansion of Restinga areas in urban environments.
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Claims 8
Claim · model-written summary
Fourteen bee species and 192 individuals visited C. rosea.
- Taxon
- Canavalia rosea
Canavalia roseat0 - Interactor
- bee
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=60)
Apis melliferae0pollinator - Outcome
- bee speciese0
- Value
- 192 individuals of 14 bee speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=500)
Verbatim
e0“A total of 192 individuals of 14 bee species were captured.”
t0“Canavalia rosea”
Claim · model-written summary
Open flower number was significantly related to bee richness and abundance.
- Taxon
- Canavalia roseaCanavalia roseat0
- Organ / stage
- open flowerse0
- Interactor
- beesAnthophilae0pollinator
- Outcome
- richness and abundance of beese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant relationship between the availability of floral resources, measured by the number of open flowers and the richness and abundance of bees.”
t0“Canavalia rosea”
Claim · model-written summary
Bee richness was greatest between January and March.
- Taxon
- Canavalia roseaCanavalia roseat0
- Interactor
- beesAnthophilae0pollinator
- Outcome
- richness of beese0
- Direction
- greateste0
- Qualifier
- between January and Marche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest richness of bees was observed between January and March”
t0“Canavalia rosea”
Claim · model-written summary
Bee abundance was greatest in January.
- Taxon
- Canavalia roseaCanavalia roseat0
- Outcome
- abundancee0
- Direction
- greateste0
- Qualifier
- Januarye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the greatest abundance in January”
t0“Canavalia rosea”
Claim · model-written summary
Eufriesea, Centris and Xylocopa were the most frequent visiting genera.
- Taxon
- C. roseaCanavalia roseae0
- Outcome
- most frequent visiting generae0
- Qualifier
- Xylocopae0
.jpg?width=60){kind=small}
Eufriesea
CentrisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The most frequent visiting genera in C. rosea were Eufriesea, Centris and Xylocopa.”
Claim · model-written summary
Eufriesea species had the greatest richness of pollen types.
- Taxon
- Canavalia roseaCanavalia roseat0
- Outcome
- richness of pollen typese0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest richness of pollen types was observed in Eufriesea species.”
t0“Canavalia rosea”
Claim · model-written summary
Most Xylocopa individuals carried C. rosea pollen.
- Taxon
- C. roseaCanavalia roseae0
- Outcome
- C. rosea pollene0
- Qualifier
- Moste0
XylocopaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most Xylocopa individuals showed C. rosea pollen.”
Claim · model-written summary
C. rosea was a floral resource for fourteen solitary bee species.
- Taxon
- C. roseaCanavalia roseae0
- Interactor
- solitary beese0pollinator
- Outcome
- source of floral resourcese0
- Value
- fourteen speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the importance of C. rosea as a source of floral resources for fourteen species of solitary bees was demonstrated.”