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Resource: used or used up in processes

Phosphorus

Appears in 56 processs and 126 steps. Everything below is linked: open a process to see it in context.

Top processes

Living soil system

8 steps

Mycorrhizal nutrient trade: phosphorus, nitrogen and carbon market

8 steps

Terrestrial nutrient cycling

5 steps

Plant nutrient uptake
Litterfall returns nutrients to soil
Mineralization and immobilization by microbes
and 2 more in this process

Mycorrhizal fungi network

5 steps

Arbuscular mycorrhiza form arbuscules in cortex
Hyphae absorb phosphorus, nitrogen and water
Nutrients exchanged for plant carbon
and 2 more in this process

Nutrient availability and leaching

5 steps

Nutrient cycling

5 steps

Which nutrient limits productivity here?
N and P are both short, so adding either one gives only partial growth
Phosphorus cycling
and 2 more in this process

Show 50 more processes

Phosphorus cycling

5 steps

Atmospheric dust deposits phosphorus
Erosion and runoff carry phosphorus to rivers and lakes
Freshwater eutrophication and algal blooms
and 2 more in this process

Biological uptake, litter return and mineralization

5 steps

Roots and mycorrhizal fungi take up nutrients from soil solution
Nutrients are allocated to leaves, wood and roots
Leaves senesce and plants withdraw nutrients first
and 2 more in this process

Nutrient recycling versus new inputs across ecosystem age

5 steps

Roots and rhizosphere

4 steps

Organic acids solubilize phosphorus
Roots absorb water and mineral nutrients
Depletion zone forms around root
and 1 more in this process

Chronosequence: limiting nutrient and nutrient source shift as soil ages

4 steps

Saprotrophic fungi

3 steps

Ecoenzymatic stoichiometry: matching enzymes to nutrient limitation

3 steps

Nutrient limitation of net primary production

3 steps

Phosphorus decline and rescue across soil ages

3 steps

Marine biological pump and ocean life

2 steps

Mineral weathering and parent material

2 steps

Pedogenic age sequence: from apatite phosphorus to occluded phosphorus

2 steps

Reciprocal reward and sanctioning

2 steps

Pedogenesis and soil horizon development

2 steps

Earthworm gut passage, casts and the drilosphere

2 steps

Rhizosphere phosphorus mobilization: phosphatases, organic acids and fast re-sorption

2 steps

Cord-forming mycelial networks: foraging, translocation and rerouting

2 steps

Wind erosion: saltation, dust emission and deposition

2 steps

Primary production

2 steps

Belowground carbon allocation to roots and mycorrhizal fungi

2 steps

Nutrient-driven carbon allocation belowground

2 steps

Mycorrhizal carbon-for-nutrient exchange loop

2 steps

Soil formation

2 steps

Terrestrial ecosystem functioning

1 step

Terrestrial nutrient cycling

Biological processes

1 step

Marine biological pump and ocean life

Ocean carbon exchange and burial

1 step

Phytoplankton fix carbon (marine primary production)

Water infiltration, retention and movement

1 step

Surface runoff carries water, sediment and organic matter off the site

Soil gas exchange and redox

1 step

Reduced metals and sulfides accumulate; redoximorphic features form; P released from Fe oxides

Bacteria and archaea

1 step

Bacterial phosphatases and phosphate solubilization

Soil fauna

1 step

Excreta and mucus release mineral nutrients

Biological coupling: organic matter and soil food web

1 step

Mycorrhizal fungi trade nutrients and water for plant carbon

Nitrogen cycling

1 step

Coastal eutrophication and hypoxic dead zones

Humification and SOM stabilization

1 step

Nitrogen and phosphorus sequestered in stable matter

Soil CO2 and biotic enhancement of weathering

1 step

Mycorrhizal hyphae tunnel into mineral grains and extract Ca, Mg, K, P

Enzyme kinetics: Michaelis-Menten rates and temperature response

1 step

Ecoenzymatic stoichiometry: matching enzymes to nutrient limitation

Biological nitrogen fixation: nitrogenase, oxygen protection and regulation

1 step

Fixation is limited by molybdenum, phosphorus and iron supply, and alternative V or Fe nitrogenases are less efficient

Atmospheric dust deposition and loess as soil parent material

1 step

Dust adds phosphorus, calcium and fine particles to downwind soils (Saharan dust supplies the Amazon with about 22,000 t P per year)

Soil export to rivers and ocean: sediment, dissolved carbon and nutrients

1 step

Nitrate and particulate phosphorus reach the coast and drive eutrophication and hypoxia

Biological nitrogen fixation: free-living and symbiotic

1 step

Nitrogenase needs molybdenum, iron and phosphorus; Mo limits free-living fixation in some tropical forest litter

Microarthropods: springtails and oribatid mites as fungal grazers and litter processors

1 step

Grazers release ammonium and phosphate; soil animals together are estimated to supply on the order of 10-40% of N mineralisation

Earthworm drilosphere: gut passage, casts, middens and greenhouse gas effects

1 step

Fresh casts are enriched in ammonium, nitrate, extractable phosphorus and microbial biomass compared with surrounding soil

Common mycorrhizal networks: what the evidence supports and what it does not

1 step

Arbuscular fungal networks move phosphorus from resource-rich to resource-poor patches in controlled experiments

Nitrogen fixation supply-demand feedback

1 step

Phosphorus and molybdenum supply can cap fixation

Controls on net primary production

1 step

Nutrient-driven carbon allocation belowground

Nitrogen and phosphorus supply and limitation

1 step

Phosphorus decline and rescue across soil ages

Progressive nitrogen limitation under rising CO2

1 step

Mycorrhizal carbon-for-nutrient exchange loop

Hydraulic redistribution by roots (0.04-1.3 mm per day)

1 step

Topsoil nutrient uptake increases and plant water status improves

Biological weathering by roots, mycorrhizal fungi and microbes (plants speed weathering about 2-10 fold)

1 step

Mineral nutrients (K, Mg, Ca, P) are absorbed by hyphae and passed to the plant

Erosion versus soil production balance

1 step

Erosion strips fertile topsoil, organic matter and nutrients

Roots, fungi and burrowers engineer soil formation

1 step

Roots and mycorrhizal fungi release protons and organic anions that dissolve minerals

Often found with

Nitrogen 65 Plants 42 Mycorrhizal fungi 22 Carbon 22 Water 17 Plant roots 15 Soil microbes 9 Dust 9 Soil 9 Iron 8 Nitrate 8 Soil organic matter 8

Known by 719 participants and resources across the map.