Henry Eden W. Cottee-Jones, Robert J. Whittaker: perspective: The keystone species concept: a critical appraisal. Frontiers of Biogeography, 2012, nro 4. doi:10.21425/F5FBG12533. Artikkelin verkkoversio. en
James E. Estes, Norman S. Smith, John F. Palmisano: Sea Otter Predation and Community Organization in the Western Aleutian Islands, Alaska. Ecology, 1978, nro 59, s. 822–833. doi:10.2307/1938786. ISSN 1939-9170. Artikkelin verkkoversio. en
Sonja Kivinen, Elina Koivisto, Sarita Keski-Saari, Laura Poikolainen, Topi Tanhuanpää, Anton Kuzmin: A keystone species, European aspen (Populus tremula L.), in boreal forests: Ecological role, knowledge needs and mapping using remote sensing. Forest Ecology and Management, 15.4.2020, nro 462, s. 118008. doi:10.1016/j.foreco.2020.118008. ISSN 0378-1127. Artikkelin verkkoversio. en
Gema Escribano-Avila, Carlos Lara-Romero, Ruben Heleno, Anna Traveset: Tropical Seed Dispersal Networks: Emerging Patterns, Biases, and Keystone Species Traits, s. 93–110. Cham: Springer International Publishing, 2018. ISBN 978-3-319-68228-0. Teoksen verkkoversio (viitattu 20.1.2022). en
escholarship.org
Henry Eden W. Cottee-Jones, Robert J. Whittaker: perspective: The keystone species concept: a critical appraisal. Frontiers of Biogeography, 2012, nro 4. doi:10.21425/F5FBG12533. Artikkelin verkkoversio. en
google.fi
books.google.fi
Tim Caro: Conservation by Proxy: Indicator, Umbrella, Keystone, Flagship, and Other Surrogate Species. Island Press, 2010-06-23. ISBN 978-1-59726-959-9. Teoksen verkkoversio (viitattu 20.1.2022). en
sciencedirect.com
Sonja Kivinen, Elina Koivisto, Sarita Keski-Saari, Laura Poikolainen, Topi Tanhuanpää, Anton Kuzmin: A keystone species, European aspen (Populus tremula L.), in boreal forests: Ecological role, knowledge needs and mapping using remote sensing. Forest Ecology and Management, 15.4.2020, nro 462, s. 118008. doi:10.1016/j.foreco.2020.118008. ISSN 0378-1127. Artikkelin verkkoversio. en
Koivisto, Maria Elisabet: Blue mussel beds as biodiversity hotspots on the rocky shores of the northern Baltic Sea. Helsingin yliopisto, 2011. Teoksen verkkoversio.
wiley.com
onlinelibrary.wiley.com
James E. Estes, Norman S. Smith, John F. Palmisano: Sea Otter Predation and Community Organization in the Western Aleutian Islands, Alaska. Ecology, 1978, nro 59, s. 822–833. doi:10.2307/1938786. ISSN 1939-9170. Artikkelin verkkoversio. en
James E. Estes, Norman S. Smith, John F. Palmisano: Sea Otter Predation and Community Organization in the Western Aleutian Islands, Alaska. Ecology, 1978, nro 59, s. 822–833. doi:10.2307/1938786. ISSN 1939-9170. Artikkelin verkkoversio. en
Sonja Kivinen, Elina Koivisto, Sarita Keski-Saari, Laura Poikolainen, Topi Tanhuanpää, Anton Kuzmin: A keystone species, European aspen (Populus tremula L.), in boreal forests: Ecological role, knowledge needs and mapping using remote sensing. Forest Ecology and Management, 15.4.2020, nro 462, s. 118008. doi:10.1016/j.foreco.2020.118008. ISSN 0378-1127. Artikkelin verkkoversio. en
David S. Maehr, Reed F. Noss, Jeffery L. Larkin: Large mammal restoration : ecological and sociological challenges in the 21st century. Washington, DC: Island Press, 2001. 47665559. ISBN 1-55963-816-8, 978-1-55963-816-6, 1-55963-817-6, 978-1-55963-817-3. Teoksen verkkoversio (viitattu 20.1.2022).
