The most abundant species of hummingbirds were Panterpe insignis and Selasphorus flamulla. On the other hand, Apis mellifera and Bombus ephippiatus were the most commonly observed pollinators.
The plant species of the genus Hypericum (Hypericaceae) and Castilleja (Orobanchaceae) were those that presented a more continuous flow throughout the year, while Hesperomeles obtusifolia (Rosaceae) was the one that attracted the greatest quantity and diversity of insects.
In addition, transplant experiments of the plant species visited by the hummingbirds were carried out within the project in order to analyze the survival rate of the plants and the flexibility in the use of floral resources by the hummingbird species.
Out of the 3 plant species used in the translocation experiments, only Fuchsia microphylla bloomed at the two introduced sites, receiving visits from 2 species of hummingbirds and one species of insect of the genus Bombus. As for insects, it was found that the main pollinator during the dry season was Apis mellifera (Hymenoptera, Apidae), which is reaching its highest elevation in the study area.
During the rainy season the main pollinator is Bombus Ephippiatus (Hymenoptera, Apidae), which is native and is very well adapted to the páramo ecosystem, although when there is total cloudiness or rain, it disappears temporarily. Hernández pointed out that "practically no organism is capable of surviving and reproducing without interacting with other organisms, whether of the same species or different species."
'In plant-seed disperser interactions (such as hummingbirds), the plant increases the probability of survival because its seed is transported beyond the mother plant, this reduces the possibility of dying due to the attack of pathogens, by competition with other individuals of the same species or by the encounter with a herbivore, due to the high concentrations of seeds / seedlings that could be found under the mother plant", he added.
Climate change represents a threat to species and their interactions in ecological communities and may affect the fundamental functions that organisms provide to ecosystems, such as seed dispersal and pollination. The foregoing shows the relevance of understanding how the influence of climate change is in these interactions.