Tensions in Practice: Retaining current occupants and making room for successors¶
Two stipulated succession mechanisms
A current occupant can change a site in opposite ways: it may build conditions needed by a desired successor, or it may maintain conditions that exclude that successor. Keeping or removing the occupant therefore has different consequences depending on the coupling. The panels compare the intervention, while showing both possible mechanisms so that “clear the site” cannot masquerade as a universal improvement.
Preserve enabling work
Retain occupants whose ongoing effects create needed conditions.
Release an inhibited transition
Remove an occupant when its continuing effects prevent the desired next stage.
Why these aims pull against each other
Both interventions act on the occupant, but the consequential path runs through the conditions it changes. The sign of that change determines whether retention helps or hinders.
Choose an arrangement to see what changes and what remains difficult.
Arrows show the stated work, authority, or access paths. Position, length, and color do not measure time, risk, cost, or performance.
What this choice protects
What it costs
When it fits
Compare the arrangements
Retain the occupant
Keep the current occupant and its ongoing effects on the substrate.
- What it protects
- Preserves facilitation when the successor still needs the conditions being built.
- What it costs
- Also preserves inhibition when the current occupant is the reason the successor cannot establish.
- When it fits
- Fits the facilitating branch when the desired transition depends on continuing substrate work; diagnose the mechanism before applying it.
Illustration note: This is an invented bounded arrangement. Arrows state the selected rights, flows or dependencies; they do not predict behavior or quantify outcomes.
Remove the occupant
Remove the current occupant, stopping its continuing substrate effects in the selected model.
- What it protects
- Can release an inhibited transition when the blocking effect depends on the occupant’s continued presence.
- What it costs
- Can stop needed substrate-building and delay a successor that was being facilitated.
- When it fits
- Fits only where inhibition is established and removal actually ends it; lasting substrate legacies may defeat this assumption.
Illustration note: This is an invented bounded arrangement. Arrows state the selected rights, flows or dependencies; they do not predict behavior or quantify outcomes.
What this illustration does—and does not—establish
The canonical tension supplies the mechanism. The named setting, arrangements, conditions and costs are editorial constructions, not observed outcomes or universal prescriptions.
- These are stipulated mechanisms, not claims about named species or a real restoration site. No clearing, planting or disturbance recommendation follows.
- Removal is assumed to end the ongoing effect; persistent soil or infrastructure legacies would require a different model.
- Tolerance, multiple pathways, arrival order and disturbance can change outcomes. A desired successor is not an inevitable or objectively superior endpoint.
Source entries
Ecological Succession
Ecological Succession: Facilitation versus Inhibition versus Tolerance (sign/direction) supplies this local tension. The concrete setting and selected alternatives are explicitly editorial applications.
Facilitation versus Inhibition versus Tolerance (sign/direction)
T2 — Facilitation versus Inhibition versus Tolerance (sign/direction). The three coupling modes demand opposite interventions — accelerate a facilitating stage, remove an inhibiting one, wait out a tolerating one — and they are easily conflated under "things change over time." The failure mode is applying the wrong intervention to the operative mode: clearing away a current occupant that was actually *facilitating* the stage you want, or patiently waiting for a transition that the current stage is actively *inhibiting* and will block indefinitely. Diagnostic: before intervening, classify the coupling — is the current stage making the next possible, delaying it, or merely about to be displaced? The mode, not the mere fact of change, dictates whether to push, remove, or wait.