ecologiasociale

Shared Ground — how living things share a place

Birch and willow coming up through a burned clearing
Photo: Marolyn Dudfield / Pexels

Bare ground does not stay bare. The order is broadly predictable — wind-blown colonisers, then scrub, then trees — but the details depend entirely on what the disturbance left behind.

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Organisations in the same terrain

Supported by

Field-adjacent organisations

Also on the ground
Charred tree trunks stand amid blackened earth and ash after a forest fire
Succession

After fire

Heat as a trigger rather than only a destroyer.

Short entry
Small daisy sprouting between moss clumps on gravel substrate
Pavement

Railway ballast

Hot, sharp-draining and regularly disturbed — and full of colonisers.

Short entry
Fallen fruit and moss cover damp ground amid ferns and leafy undergrowth
Returns

The beaver effect

An animal that rebuilds the hydrology it lives in.

Short entry
The registerAll 31 entries
SectionEntryLength
EdgesThe line where two habitats meetAn edge is not a boundary but its own environment — brighter, windier, drier — and it holds species that live in neither side.Medium entry
EdgesHedgerowsA linear habitat that is mostly edge, and how age is read from what grows in it.Medium entry
CorridorsGetting from patch to patchA population split in two behaves differently from one population. What a corridor does and what the evidence for it actually shows.Medium entry
ReturnsRemove one animalTaking out a single species can change vegetation, water and soil — and putting it back rarely reverses things neatly.Medium entry
PavementThe city is a habitatWalls, verges, ballast and roofs are not degraded countryside; they are dry, alkaline, disturbed environments with their own specialists.Medium entry
CountingHow any of this is knownQuadrats, transects and repeat visits. Most ecological claims rest on somebody counting the same square metre for years.Medium entry
The signature

Every entry names the species or the process, and separates what is measured from what is inferred.

Counting

How any of this is actually known

Most ecological claims rest on somebody counting the same square metre for years. These four entries are about the methods, and about what each one cannot tell you.

The whole section
  1. The quadratA square frame thrown down, and the discipline of where it lands.
  2. TransectsA fixed line walked repeatedly, and why the route must never change.
  3. Indicator speciesUsing one organism as a proxy for conditions, and the limits of that.
  4. Long runsDatasets decades long, and why the old ones cannot be replaced.
Six sections
SuccessionWhat comes back, and in what order.6 entries EdgesWhere two habitats meet.5 entries CorridorsGetting from one patch to another.5 entries ReturnsOne species removed, or added.5 entries PavementThe city as habitat.5 entries CountingHow any of this is actually known.5 entries