stonewort
Pond-bottom green growth
Stonewort is a freshwater algae that grows submerged in ponds and lakes, resembling a plant with whorled branches.
The name comes from the calcified, gritty texture of many species—they deposit calcium carbonate on their surfaces, making them feel rough or stony to the touch.
Stoneworts often indicate clean, unpolluted water.
Carbonate sedimentary rock
- marlCalcareous clay deposit
- encrustedCovered with hard layer
- chalkyPale and dusty-textured
- tufaPorous calcium carbonate deposit
sedimentation · fossilization · carbonate · hardened · gritty · precipitate · alkaline
Freshwater aquatic plant
- submergedBelow water's surface
- waterweedAquatic freshwater plant
- limnologyStudy of inland waters
- benthosSeabed organisms collectively
benthic · freshwater · lake · pond · stream · eutrophic · aquifer
Haploid reproductive generation
- thallusUndifferentiated vegetative body
- filamentousComposed of thin strands
- chlorophyllLight-harvesting plant pigment
- photosynthesisLight-to-sugar conversion in plants
autotrophic · macroalgae · algology · whorl · internode · branchlet
Species showing ecosystem health
- oxygenationAdding breathable gas
- ecosystemInterconnected organisms and surroundings
- habitatOrganism's natural environment
- biodiversityRange of life forms
invertebrates · conservation · endangered · protected · restoration
limestone
Carbonate sedimentary rock
tufa · sedimentation · fossilization · carbonate · hardened · gritty · precipitate · alkaline
pondweed
Freshwater aquatic plant
benthos · benthic · freshwater · lake · pond · stream · eutrophic · aquifer
gametophyte
Haploid reproductive generation
- thallusUndifferentiated vegetative body
- filamentousComposed of thin strands
- chlorophyllLight-harvesting plant pigment
photosynthesis · autotrophic · macroalgae · algology · whorl · internode · branchlet
bioindicator
Species showing ecosystem health
- oxygenationAdding breathable gas
- ecosystemInterconnected organisms and surroundings
- habitatOrganism's natural environment
biodiversity · invertebrates · conservation · endangered · protected · restoration