Tree Risk & Hazard Assessments
Arboriculture, the study of trees, and risk and hazard
assessment are inextricably linked in the modern era.
Trees are living entities with individual responses
to their environment and surroundings. Tree biology is known science
but a tree's response to its surroundings and differeing environmental
pressures is varied.
Arborists over the last few years have attempted to
understand the problem of branch/stem failure and relate them to
physical and physiological conditions. Certain growth forms lead
to structural failure. Parasitic fungi and fauna can weaken the
tree. Saprophytic fungi can hollow a tree, or weaken its structure,
without affecting the stability. They can so affect the stability,
and subsequent branch or root failure can be catastrophic.
Due to the wide range of anatomical detail, and varied
responses to environmental conditions, an arborist has to rely on
experience and relate this experience to the facts, gleaned from
Astell Associates have over 25 years of practical
and academic experience of trees and tree response to the environment.
Astell Associates have practised progressive tree surgery, incorporating
hazard assessment and risk assessment into management programmes.
Trees are living entities with a wide range of biological
systems associated not only with the life of the tree, but also
with the life histories of many other organisms that have an effect
on the hazard and risk assessment of the trees . This multitude
of interactions leads to a multilayered response to the assessment