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Shiro TSUYUZAKI
Plant community ecology / Environmental conservation

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

(Update on Nov. 20 2007)

Indicator species

Indicator species

Species that indicates the characteristics of the environmental conditions, such as serpentine.

Indicator plant

Plant species used as indicator species.
Plants can not move greatly except when they are seeds (and pollens). Therefore, each plant establishes in a respective soil type, topography and climate, and generally indicates the environments better than animals.

exotic species - indicates urbanization

ST ST ST
Hypochaeris radicata Plantago lanceorata Lamium purpureum

Phragmites australis - indicates wet habitat
Drosera rotundifolia - indicates nutrient-poor habitat

Bioindicator

Plant, animal or chemicals used to monitor an environment and/or ecosystem

References
Quiz
  1. The indicator species concept can be extended to higher taxa. In general, what might each of these taxa indicate in our region: Orchidaceae; Asteraceae; Poaceae; Carex; Vaccinium, shrub Rosaceae; Ericaceae. For each group, name a species that is an exception to the general rule.
  2. For each of conditions listed, list several excellent indicators for low, medium and high levels of the condition: soil moisture, soil pH, salinity, grazing, trampling, nutrients, light, fire, and bioclimatic zone. List other conditions that could be inferred from species present on a site.

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