The condition of pink gums was poor for infected (58% canopy dieback) and uninfected trees (43%) across all size classes, and there was no relationship between mistletoe abundance or presence and canopy dieback.
But the trials revealed a number of serious defects, including inadequate visibility when taxiing, poor-quality plexiglas in the canopy obscuring the pilot's view, heavy controls, poor longitudinal stability, difficulty in opening canopy, an excessively hot cockpit and a "dangerous propensity to flick from a simple stall into a spin from which it was almost impossible to recover".
It is believed that many ant species that engage in indirect herbivory rely on specialized symbiosis with their gut microbes to upgrade the nutritional value of the food they collect and allow them to survive in nitrogen poor regions, such as rainforrest canopies.
This may still be far from a complex agroforest but turns the system into what can be defined as a 'simple agroforest' or 'light agroforest.' However, biodiversity is poor and there is no real canopy above the cocoa.
Generally, in temperate Europe poor site conditions have more open canopies and thus contain more species at lower productivity.
These findings therefore underscores the importance of new generation multispectral sensors with strategically-position bands and machine learning algorithms in estimating LAI for quantifying canopy interception, especially in resource-poor areas.
The results generally supported the prediction, suggesting that lower growth of angiosperm trees (except L. recurvum on Kinabalu) in cold and nutrient-poor environments results in a sparser upper canopy, which allows shade-intolerant conifers to co-occur with angiosperm trees either as emergents or as codominants in the open canopy.
Other factors are low light levels under the forest canopy which reduces phototaxis, light winds, poor soils, natural enemies and heavy rainfall which can wash away or destroy cells.
In summary, this study suggests that shade-intolerant conifers can coexist with angiosperm trees in cold and nutrient-poor environments, either as emergents above the closed canopy of angiosperm trees or as codominants in the open canopy.
However, poor reception perhaps due to atmospheric factors, terrain, tree canopy or tall buildings can produce unsuitable recordings.
