21. Tiger beetles are considered a good indicator species and have been used in ecological studies on biodiversity. 22. The Northern Spotted Owl was designated an indicator species in the old growth forests in the Pacific Northwest. 23. As a result in practice, indicator species are identified as target foci for the conservation of threatened fungi. 24. Indicator species are also known as sentinel organisms, i . e . organisms which are ideal for biomonitoring.25. It has been suggested that it could be used as an indicator species , making it valuable to stream management. 26. They're the indicator species . 27. Bigfin reef squids adapt to warmer temperatures by laying more eggs, making them a good indicator species for climate change. 28. It has been used as a bioindicator / indicator species to study levels of the metals selenium, copper and cadmium. 29. Axiophytes are a relatively recent concept which has its roots in such ideas as " ancient woodland indicator species ". 30. The amphibians, the family of creatures that include frogs and toads, are widely regarded by scientists as excellent indicator species .
