Population Survey Data for Coastal Giant Salamanders in the Chilliwack River Valley

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Richardson, John, 2024, "Population Survey Data for Coastal Giant Salamanders in the Chilliwack River Valley", https://doi.org/10.5683/SP3/7MH2AM, Borealis, V1

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Description	The Coastal Giant Salamander (Dicamptodon tenebrosus, formerly known as Pacific giant salamander) is considered a species at risk (Assessed as Threatened by COSEWIC and red-listed by BC-CDC), and the primary putative threat in BC is forestry. Forestry operations impact both the aquatic and terrestrial habitats of the salamanders. Lack of forest cover exposes the adults to wider temperature extremes and the possibility of desiccation. Development of land for farming and settlement along Vedder Mountain and the Cultus Lake area has encroached on the B.C. distribution range of Dicamptodon tenebrosus. Adults depend on riparian forests, which are often removed by logging. In the streams, larvae (and neotenic adults) must cope with more variable stream flows, erosion and sedimentation of stream habitats, and increased water temperatures. This long-term (1994-2001) mark-recapture study of Coastal Giant Salamanders led by Dr. John Richardson (UBC) and Dr. William Neill (UBC) took place in 12 small streams in the Chilliwack River Valley, BC. This study includes survey data to assess whether forest harvest history near the streams or other geomorphic characteristics impacted density, survival, and growth rates. These data, the only long-term data using mark-recapture designs (CJS, using Lebreton design) for this species anywhere, will play a crucial role in future recovery efforts for this threatened species in Canada. The scientific value is high in understanding population dynamics and in the face of continued land use impacts and climate change, offering hope for the future of these salamanders.
Subject	Earth and Environmental Sciences
Keyword	Amphibian, radio telemetry, clearcut logging, buffer strip, Dicamptodon tenebrosus, Coastal Giant Salamander, tagging
Related Publication	I. Dudaniec, R.Y., S.F. Spear, J.S. Richardson & A. Storfer. 2012. Current and historical drivers of landscape genetic structure differ in core and peripheral salamander populations. PLoS ONE 7(5): e36769. doi:10.1371/journal.pone.0036769
License/Data Use Agreement	CC-BY 4.0

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Citation Metadata

Persistent Identifier	doi:10.5683/SP3/7MH2AM
Publication Date	2024-09-24
Title	Population Survey Data for Coastal Giant Salamanders in the Chilliwack River Valley
Author	Richardson, John (University of British Columbia) - ORCID: 0000-0001-8135-7447
Point of Contact	Use email button above to contact. Richardson, John (University of British Columbia)
Description	The Coastal Giant Salamander (Dicamptodon tenebrosus, formerly known as Pacific giant salamander) is considered a species at risk (Assessed as Threatened by COSEWIC and red-listed by BC-CDC), and the primary putative threat in BC is forestry. Forestry operations impact both the aquatic and terrestrial habitats of the salamanders. Lack of forest cover exposes the adults to wider temperature extremes and the possibility of desiccation. Development of land for farming and settlement along Vedder Mountain and the Cultus Lake area has encroached on the B.C. distribution range of Dicamptodon tenebrosus. Adults depend on riparian forests, which are often removed by logging. In the streams, larvae (and neotenic adults) must cope with more variable stream flows, erosion and sedimentation of stream habitats, and increased water temperatures. This long-term (1994-2001) mark-recapture study of Coastal Giant Salamanders led by Dr. John Richardson (UBC) and Dr. William Neill (UBC) took place in 12 small streams in the Chilliwack River Valley, BC. This study includes survey data to assess whether forest harvest history near the streams or other geomorphic characteristics impacted density, survival, and growth rates. These data, the only long-term data using mark-recapture designs (CJS, using Lebreton design) for this species anywhere, will play a crucial role in future recovery efforts for this threatened species in Canada. The scientific value is high in understanding population dynamics and in the face of continued land use impacts and climate change, offering hope for the future of these salamanders.
Subject	Earth and Environmental Sciences
Keyword	Amphibian radio telemetry clearcut logging buffer strip Dicamptodon tenebrosus Coastal Giant Salamander tagging
Related Publication	I. Dudaniec, R.Y., S.F. Spear, J.S. Richardson & A. Storfer. 2012. Current and historical drivers of landscape genetic structure differ in core and peripheral salamander populations. PLoS ONE 7(5): e36769. doi:10.1371/journal.pone.0036769 II. Dudaniec, R.Y. & J.S. Richardson. 2012. Habitat associations of the Coastal Giant Salamander (Dicamptodon tenebrosus) at its thre III. Dudaniec, R.Y., A. Storfer, S.F.Spear & J.S. Richardson. 2010. New microsatellite markers for examining genetic variation in peripheral and core populations of the Coastal Giant Salamander (Dicamptodon tenebrosus). PLoSOne 5(12): e14333. doi:10.1371/journal.pone.0014333 IV. Abbott, C. L., & Curtis, J. M. 2010. Initial investigation of population and conservation genetics in the coastal giant salamander, Dicamptodon tenebrosus, using nuclear microsatellite markers. Northwest Science, 84(1), 46-51. V. Curtis, J. M., & Taylor, E. B. 2004. The genetic structure of coastal giant salamanders (Dicamptodon tenebrosus) in a managed forest. Biological Conservation, 115(1), 45-54. VI. Johnston, B. and L. Frid. 2002. Clearcut logging restricts the movements or terrestrial Pacific Giant Salamanders (Dicamptodon tenebrosus Good). Can.J. Zool. 80:2170–2177. VII. Ferguson, H. M. 2000. Larval colonisation and recruitment in the Pacific giant salamander (Dicamptodon tenebrosus) in British Columbia. Canadian Journal of Zoology, 78(7), 1238-1242. VIII. Richardson, J.S., and W.E. Neill. 1998. Headwater amphibians and forestry in British Columbia: Pacific Giant Salamanders and Tailed Frogs. Northwest Science 72(special issue):122–123. IX. Ferguson, H. M. 1998. Demography, dispersal and colonisation of larvae of Pacific Giant Salamanders (Dicamptodon tenebrosus Good) at the northern extent of their range (Masters of Science dissertation, University of British Columbia).
Depositor	Gunawardana, Sasindu
Deposit Date	2024-07-23

Geospatial Metadata

Geographic Coverage	Canada, British Columbia

Life Sciences Metadata

Organism	Other
Other Organism	Dicamptodon tenebrosus
Measurement Type	Other
Other Measurement Type	Number of individuals, Length and weight measurement, developmental stage, environmental conditions

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