HabitatMech

plant litter

ENVO:01000628 ·resolve ·TERRESTRIAL ·EXACT REVIEWED

Leaf litter is dead plant material, such as leaves, bark, needles, and twigs, that has fallen to the ground. — ENVO

Source attestations

Each upstream vocabulary's own account of this habitat. Assertion counts are per-source units and are not comparable across sources — GOLD counts organisms, BacDive strains, PREGO taxa.

What each upstream vocabulary says about this habitat
SourceLabel / pathAssertionsUnit
BACDIVE Decomposing-plant 625 STRAIN
ENVIRONMENTS_TABLE litter
Physicochemical parameter bands from kg-microbe's environment table.		 —
GOLD Environmental > Terrestrial > Plant litter
3 GOLD ecosystem node ids share this path; first shown. See data/raw/gold_ecosystem_paths.tsv.		 55 ORGANISM
GOLD Environmental > Terrestrial > Plant litter > Litterfall —
MADIN plant litter 19 TAXON

Broader habitats

Environmental parameters

Physicochemical parameters
ParameterValueSource
GRADIENTShighkg-microbe environments.csv (litter)
NUTRIENTSmediumkg-microbe environments.csv (litter)
ORGANIC_MATTERhighkg-microbe environments.csv (litter)
PRESSURElowkg-microbe environments.csv (litter)
SALINITYlowkg-microbe environments.csv (litter)
SALINITY_VARIABILITYsmallkg-microbe environments.csv (litter)
STRUCTURAL_COMPLEXITYhkg-microbe environments.csv (litter)
TEMPERATUREmediumkg-microbe environments.csv (litter)
TEMPERATURE_VARIABILITYmediumkg-microbe environments.csv (litter)
WATER_VARIABILITYoccasionally wetkg-microbe environments.csv (litter)

Causal graphs

Plant litter lignocellulose decomposition

Dead leaves, bark, needles, and twigs expose lignocellulose and soluble plant metabolites to decomposer fungi and bacteria; fungal extracellular enzymes depolymerize cellulose and lignin, bacterial taxa succeed on the changing substrate pool, and the consortium mineralizes plant carbon and nutrients into soil organic matter and dissolved organic matter.

Directed graph · arrows run from subject to object. Focus or hover over a node or arrow for details; the evidence table follows.
Plant litter lignocellulose decomposition 14 nodes and 15 directed relationships. Labels and evidence are also available in the adjacent table. plant litter — accumulates → fallen plant tissues; Evidence: PMID:16917528 accumulates fallen plant tissues — supplies → lignocellulose; Evidence: DOI:10.1007/s11284-007-0390-z supplies plant litter — releases → soluble litter dissolved organic matter; Evidence: PMID:35523988 releases lignocellulose — selects for → saprotrophic fungi; Evidence: PMID:23051693 selects for saprotrophic fungi — expresses → fungal extracellular enzymes; Evidence: PMID:22402400 expresses fungal extracellular enzymes — drives → cellulose depolymerization; Evidence: PMID:17089664 drives fungal extracellular enzymes — drives → lignin depolymerization; Evidence: DOI:10.1007/s11284-007-0390-z drives cellulose depolymerization — contributes to → soluble litter dissolved organic matter; Evidence: PMID:35523988 contributes to soluble litter dissolved organic matter — supports → cellulolytic bacteria; Evidence: PMID:22402400 supports plant litter — selects for → cellulolytic bacteria; Evidence: PMID:27543318 selects for saprotrophic fungi — supports → fungal-mycelium consumers; Evidence: PMID:27543318 supports soluble litter dissolved organic matter — shapes → microbial succession; Evidence: PMID:27357176 shapes microbial succession — drives → litter carbon mineralization; Evidence: PMID:22402400 drives litter carbon mineralization — releases → nutrient release; Evidence: PMID:35523988 releases microbial succession — contributes to → soil organic matter inputs; Evidence: PMID:27357176 contributes to plant litter (HABITAT); plant_litter; ENVO:01000628 HABITAT plant litter fallen plant tissues (ENVIRONMENTAL_FACTOR); fallen_plant_tissues ENVIRONMENTAL_FACTOR fallen plant tissues lignocellulose (CHEMICAL); lignocellulose CHEMICAL lignocellulose soluble litter dissolved organic matter (CHEMICAL); soluble_litter_dom CHEMICAL soluble litter dissolved organic matter saprotrophic fungi (TAXON); saprotrophic_fungi TAXON saprotrophic fungi fungal extracellular enzymes (TRAIT); fungal_extracellular_enzymes TRAIT fungal extracellular enzymes lignin depolymerization (PATHWAY); lignin_depolymerization PATHWAY lignin depolymerization cellulose depolymerization (PATHWAY); cellulose_depolymerization PATHWAY cellulose depolymerization cellulolytic bacteria (TAXON); cellulolytic_bacteria TAXON cellulolytic bacteria fungal-mycelium consumers (TAXON); fungal_mycelium_consumers TAXON fungal-mycelium consumers microbial succession (STATE); microbial_succession STATE microbial succession litter carbon mineralization (COMMUNITY_PROCESS); litter_carbon_mineralization COMMUNITY_PROCESS litter carbon mineralization nutrient release (COMMUNITY_PROCESS); nutrient_release COMMUNITY_PROCESS nutrient release soil organic matter inputs (CHEMICAL); soil_organic_matter_inputs CHEMICAL soil organic matter inputs
plant_litter_lignocellulose_decomposition edges
EdgeSubjectPredicateObjectEvidence
plant_litter_accumulates_fallen_tissues plant litter accumulates
Plant litter accumulates dead fallen leaves, bark, needles, and twigs on the soil surface.		 fallen plant tissues PMID:16917528
Osono reviewed how fungi already present on living foliage seed decomposer communities after leaves senesce into litter.
fallen_tissues_supply_lignocellulose fallen plant tissues supplies
Fallen plant tissues supply cellulose, hemicellulose, and lignin polymers that dominate plant-litter decomposition.		 lignocellulose DOI:10.1007/s11284-007-0390-z
Osono reviewed fungal decomposition of lignin and cellulose during leaf litter decay.
litter_leaches_soluble_dom plant litter releases
Fresh litter leaches soluble dissolved organic matter that fuels early microbial growth in the litter layer.		 soluble litter dissolved organic matter PMID:35523988
Schroeter and colleagues tracked DOM molecular changes and community function during early litter decomposition.
lignocellulose_selects_saprotrophic_fungi lignocellulose selects for
Recalcitrant plant polymers select fungi able to enzymatically depolymerize lignocellulosic litter.		 saprotrophic fungi PMID:23051693
Voriskova and Baldrian followed fungal succession during leaf litter decomposition.
saprotrophic_fungi_secrete_enzymes saprotrophic fungi expresses
Saprotrophic fungi secrete extracellular hydrolytic and oxidative enzymes into litter.		 fungal extracellular enzymes PMID:22402400
Schneider and colleagues used metaproteomics to identify fungal and bacterial enzymes active during leaf litter decomposition.
fungal_enzymes_depolymerize_cellulose fungal extracellular enzymes drives
Hydrolytic fungal enzymes break cellulose and hemicellulose polymers into smaller plant-derived molecules.		 cellulose depolymerization PMID:17089664
Romani and colleagues compared bacterial and fungal extracellular enzyme activities on decomposing litter.
fungal_enzymes_depolymerize_lignin fungal extracellular enzymes drives
Oxidative fungal enzymes attack recalcitrant aromatic lignin in later stages of leaf litter decay.		 lignin depolymerization DOI:10.1007/s11284-007-0390-z
Osono reviewed ligninolytic fungi and lignin decomposition during leaf litter decay.
depolymerization_releases_dom cellulose depolymerization contributes to
Enzymatic depolymerization converts structural plant polymers into lower-molecular-weight dissolved organic substrates.		 soluble litter dissolved organic matter PMID:35523988
Schroeter and colleagues linked DOM composition with functional adaptation of decomposer communities to plant litter substrates.
soluble_dom_fuels_bacteria soluble litter dissolved organic matter supports
Soluble plant-derived organic matter supports bacteria that grow during litter decay.		 cellulolytic bacteria PMID:22402400
Schneider and colleagues observed increasing bacterial proteins and taxon-specific bacterial functions during litter decomposition.
decomposing_litter_selects_cellulolytic_bacteria plant litter selects for
Leaf litter selects bacterial decomposers with cellulolytic potential as decay progresses.		 cellulolytic bacteria PMID:27543318
Tlaskal and colleagues found a bacterial succession pattern that included cellulolytic taxa on decomposing leaf litter.
fungal_biomass_feeds_mycelium_consumers saprotrophic fungi supports
Expanding fungal mycelia create bacterial niches for organisms that can consume fungal biomass.		 fungal-mycelium consumers PMID:27543318
Tlaskal and colleagues identified bacterial taxa with potential to consume fungal mycelia during leaf litter decomposition.
substrate_change_drives_succession soluble litter dissolved organic matter shapes
Changes in soluble DOM and polymer availability drive successional shifts in litter decomposer communities.		 microbial succession PMID:27357176
Purahong and colleagues characterized coupled bacterial and fungal community dynamics through litter decomposition.
decomposer_succession_mineralizes_carbon microbial succession drives
Successional fungal and bacterial decomposers mineralize plant carbon as litter decays.		 litter carbon mineralization PMID:22402400
Schneider and colleagues linked decomposer taxa with protein-level biogeochemical functions during litter decay.
mineralization_releases_nutrients litter carbon mineralization releases
Microbial decomposition releases plant-bound carbon and nutrients from the litter layer.		 nutrient release PMID:35523988
Schroeter and colleagues coupled DOM chemistry with microbial functions during plant-litter decomposition.
decomposition_feeds_soil_organic_matter microbial succession contributes to
Litter decomposer succession turns fallen plant tissues into dissolved and particulate inputs to soil organic matter.		 soil organic matter inputs PMID:27357176
Purahong and colleagues followed fungal and bacterial communities during forest litter decomposition and its transition into the soil organic layer.

Associated taxa

Taxa reported from this habitat, which is weaker than being characteristic of it. rank is out of pool: a high rank in a pool of thousands of near-tied scores is a weak claim. Entries corroborated by a second, independent source are listed first.

Taxa reported from this habitat
TaxonSourceRankPoolCorroborated
Corallococcus coralloides NCBITaxon:184914 BACDIVE 1 126
Sorangium cellulosum NCBITaxon:56 BACDIVE 2 126
Nannocystis exedens NCBITaxon:54 BACDIVE 3 126
Myxococcus fulvus NCBITaxon:33 BACDIVE 4 126
Herpetosiphon sp. NCBITaxon:71864 BACDIVE 5 126
Archangium sp. NCBITaxon:1872627 BACDIVE 6 126
Melittangium lichenicola NCBITaxon:45 BACDIVE 7 126
Bacteria NCBITaxon:2 BACDIVE 8 126
Cystobacter armeniaca NCBITaxon:394090 BACDIVE 9 126
Hyalangium gracile NCBITaxon:394092 BACDIVE 10 126
Myxococcus virescens NCBITaxon:83456 BACDIVE 11 126
Corallococcus exiguus NCBITaxon:83462 BACDIVE 12 126
Hyalangium minutum NCBITaxon:394096 BACDIVE 13 126
Sporocytophaga myxococcoides NCBITaxon:153721 BACDIVE 14 126
Myxococcales NCBITaxon:29 BACDIVE 15 126
Myxococcus stipitatus NCBITaxon:83455 BACDIVE 16 126
Allostigmatella erecta NCBITaxon:83460 BACDIVE 17 126
Myxococcus xanthus NCBITaxon:34 BACDIVE 18 126
Pseudomonas sp. NCBITaxon:306 BACDIVE 19 126
Archangium disciforme NCBITaxon:38 BACDIVE 20 126
Pectobacterium carotovorum NCBITaxon:554 BACDIVE 21 126
NCBITaxon:57 BACDIVE 22 126
Archangium violaceum NCBITaxon:83451 BACDIVE 23 126
Polyangium sorediatum NCBITaxon:889274 BACDIVE 24 126
Archangiaceae NCBITaxon:39 BACDIVE 25 126

Showing 25 of 44 kept associations.

Also called

Curation

What a curator decided about this record, and why. A record built from several source concepts can carry one decision per concept.

  1. GROUND 2026-08-16 · claude-opus-5

    Grounded to ENVO:01000628 'plant litter' (CLOSE). Term-request re-check (#12): 'Decomposing-plant' was left ungrounded after NCIT:C14258 'Plant' was refused for naming the organism rather than the decomposing material. That refusal was right; the conclusion that no term fits was not. ENVO:01000628 'plant litter' is dead plant material — leaves, bark, needles, twigs — which is what the bin holds. CLOSE rather than EXACT because ENVO's definition adds 'that has fallen to the ground', and standing dead plant material is decomposing plant that is not litter. (source concept habitatmech:BACDIVE.5d6bbfabf0)

  2. REVIEW 2026-08-16 · claude-opus-5

    Reviewed and endorsed the seeder's own resolution. Risky-grounding review (#12): the flag is lexical: the term's label spells out a qualifier that the GOLD path supplies positionally rather than in the leaf. The path pins the sense, and it is the term's. (source concept habitatmech:GOLD.0d89d93335)

  3. REVIEW 2026-08-16 · claude-opus-5

    Reviewed and endorsed the seeder's own resolution. Risky-grounding review (#12), co-attestor pass: this source concept feeds a record whose grounding was flagged and reviewed, and the record could not reach REVIEWED until every source feeding it was decided. The GOLD path's leaf is the term's label and the path's parent steps agree with the term's sense, so the seeder's resolution is endorsed. (source concept habitatmech:GOLD.e797d3ba16)

  4. REVIEW 2026-08-16 · claude-opus-5

    Reviewed and endorsed the seeder's own resolution. Risky-grounding review (#12), co-attestor pass: this source concept feeds a record whose grounding was flagged and reviewed, and the record could not reach REVIEWED until every source feeding it was decided. This one is a self-grounding: the source vocabulary names the concept with the ontology term's own label, so there is nothing to adjudicate between the two — checked that the term is the one the label denotes, and that the record it merges into is the same concept rather than a homonym. (source concept habitatmech:MADIN.c7c13007c1)

  5. ADD_CAUSAL_GRAPH 2026-09-04 · codex

    Added a plant-litter lignocellulose decomposition graph backed by PMID:16917528, DOI:10.1007/s11284-007-0390-z, PMID:35523988, PMID:23051693, PMID:22402400, PMID:17089664, PMID:27543318, and PMID:27357176.

Provenance

Generated by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.