nurse log
Fallen tree seedbed
A nurse log is a fallen tree trunk that provides nutrients, moisture, and shelter for seedlings and other plants growing on or beside it.
As the log decays, it becomes a fertile substrate for new growth, particularly in forests where dense canopy limits light reaching the ground.
A row of cedars sprouted along the nurse log.
The term extends metaphorically to anything that nurtures new development through its own decay or sacrifice.
Long-undisturbed forest
- temperate rainforestMild, wet forest ecosystem
- fallen treeTree no longer standing
- conifersCone-producing trees
- hemlockPoisonous umbellifer or conifer
spruce · fir · cedar · redwood · Douglas fir · Pacific Northwest · Appalachian · boreal
Organic breakdown process
- fungiSpore-reproducing decomposers
- mossSpore-bearing ground cover
- decayGradual organic breakdown
- humusDecayed organic soil matter
detritus · microorganisms · bacteria · mold · lichen · breakdown · disintegration · degradation
Following in order
- seedbedPrepared ground for sprouting
- microhabitatSmall distinct living area
- ecosystemInterconnected organisms and surroundings
- biodiversityRange of life forms
symbiosis · germination · seedlings · saplings · understory · mycelium · spores · regeneration
Recently sprouted young plant
- sproutNew plant emergence
- saplingJuvenile woody plant
- rootsUnderground nutrient absorbers
- fernsSpore-bearing vascular plants
mosses · huckleberry · epiphytes · new growth · regeneration · establishment · rooting · young trees
old-growth
Long-undisturbed forest
- temperate rainforestMild, wet forest ecosystem
- fallen treeTree no longer standing
- conifersCone-producing trees
hemlock · spruce · fir · cedar · redwood · Douglas fir · Pacific Northwest · Appalachian · boreal · woodland floor
rot
Organic breakdown process
humus · detritus · microorganisms · bacteria · mold · lichen · breakdown · disintegration · degradation · organic matter
succession
Following in order
- seedbedPrepared ground for sprouting
- microhabitatSmall distinct living area
- ecosystemInterconnected organisms and surroundings
biodiversity · symbiosis · germination · seedlings · saplings · understory · mycelium · spores · regeneration · colonization
seedling
Recently sprouted young plant
ferns · mosses · huckleberry · epiphytes · new growth · regeneration · establishment · rooting · young trees · vegetation