Coastal fog plays a crucial role in the ecosystem of old-growth coast redwood forests. It helps decrease temperatures, increase humidity, and reduce solar radiation, which prevents denitrification.
transfers nutrients from soil to litter through hyphae
chelators (increase solubility of nutrients)
nitrogen-fixation
Endangered species
Spotted Owl
Marbled Murrelet
animals/insects (disperse fungi and seeds)
cerambycid beetle
chickaree
canopy drip
Disturbances
logging
possible old-growth recovery over time
monoculture sites drains nutrients and soil organisms from soil
causes invasive species because of excess solar radiation
compacting soil (which negeatively effects plants because less oxygen and water. With less vegetation there is more solar radiation and denitrifiers prosper, taking the nitrogen out of the soil), damage aquatic sites,
global warming
increase in temperature, less fog, moisture, and possible drought which leads to insufficient nutrients, and less primary productivity.
fires
It can also cause loss of nutrients through heat and fly ash.
controls pests
minerals from leaching
Coast redwood has high resistance and fire thins understory allowing more nutrient availability for the old-growth trees (reduces competition and monitors invasive species).
floods
soil minerals
erosion/landslides
change aquatic sites, causes silt to alter fish habitats, loss of steep banks
colluvial and alluvial sites
soil compostion (nutrients)
pH
Diversity in plants (Keeps soil nutrient rich and promotes soil organisms)
lower nutrient
Pigmy forest-provides a range of habitats through this ecotone
plants
moisture
regeneration
nutrients, water, sunlight
wood rats strip bark off new trees
foliar uptake (80% redwood forest species)
Coastal Fog
Decrease temperature, increase humidity, reduce solar radiation (prevents denitrification)
Douglas fir
fisher
marten
voles
OLD-GROWTH COAST REDWOOD
Lichen (alga and fungus-rock weathering for soil) (endophytes inhibit plant pathogens)
tree crown (nutrients from air through epiphytes)
coastal fog reduces transpiration, which keeps stomata open, allowing for more carbon dioxide intake.