Titlebook: Vegetation Dynamics; John Miles Book 1979 J. Miles 1979 environment.soil.vegetation

onlooker

克制

Secondary successions,ecies other than those previously present commonly establish and occupy the gaps. If, as frequently happens, the invaders comprise species showing wide variations in longevity, pronounced changes will occur in the composition of the vegetation as shortlived species die, and the new gaps are re-occupied, while longer-lived species remain.

Ringworm

BLUSH

Neutral-Spine

Processes of vegetation change,ompetition, (5) site modification (or reaction), (6) stabilization at the ‘climax’. With the probable exception of stabilization, and a considerable reduction in emphasis of the role of site modification, which Clements saw as the main driving force of a succession after its initiation, this is stil

Narrative

Commonwealth

Primary successions,, as certain successions could fit either category. The former occur on new, previously unvegetated bare areas, the latter where a previous vegetation cover has been disturbed or disrupted in some way, as by ploughing, fire or changing grazing pressures. It was also noted earlier (Sections 1.3.2 and

馬具

Secondary successions,at ensue when a patch of vegetation suffers gross disturbance such that many or all of the individual plants present are killed. When this happens, species other than those previously present commonly establish and occupy the gaps. If, as frequently happens, the invaders comprise species showing wid

BLA

PON

Concluding remarks, self-regeneration, the life-cycles of dominant species, variations in climate (year-to-year or over longer periods), evolutionary developments, and gross disturbance to existing vegetation or the exposure of ground by natural physiographic processes (when succession results). These changes occur co