BC List Status:
Red (Candidates for- Extirpated, Endangered, or Threatened status)
Coastal Giant Salamander can be mistaken for the more common Northwestern Salamander. This species can reach
lengths of 10 cm or more and also exhibits neotenic behavior. Northwestern Salamander are generally a uniform brown dorsally and ventrally without any marbling and have prominent costal grooves. Adults have noticeable parotoid glands behind each eye which produce a toxic, creamy substance when threatened.
Habitat loss and alteration due to urbanisation and forest activities. Distribution coincides with areas undergoing rapid development. Disturbance, clearing and fragmentation of upland terrestrial habitat reduces adult survival.
Alteration of microclimate regimes in riparian and upland forest areas, and increase of water temperatures and siltation rates in streams due to forestry and other resource extractive activities.
Changes in flow regimes as well as increase barriers to dispersal dues to inadequately designed or perched stream crossings (e.g. culverts).
Alteration of flow regimes or channel structure and seasonal wetted areas due to hydroelectric projects.
Direct mortality or sub-lethal impacts throughout all life history phases from fertilizer and pesticide applications in urban and agricultural areas as well as for silviculture management.
Effects from climate change and natural events (e.g., mudslides/avalanches, storms, flooding) that increase stream temperatures and siltation, droughts, or decrease water flows.
Combined with a low dispersal rate, slow development, and low reproductive capacity, the species is highly vulnerable to local extirpation where its habitat is being encroached by human activities.
Please consult the Recovery strategy for the Pacific Giant Salamander (Dicamptodon tenebrosus) in British Columbia. Integrate complimentary measures found in Accounts and Measures for Managing Identified Wildlife – Accounts V.2 Coastal Giant Salamander Dicamptodon tenebrosus” and “Best Management Practices for Amphibians and Reptiles in Urban and Rural Environments in British Columbia.” Inventory and monitoring resources include standardized methods (Resource Information Standards Committee) # 39 Inventory Methods for Tailed Frogs and Pacific Giant Salamanders (Version 2.0), “Measuring and Monitoring Biological Diversity - Standard Methods for Amphibians”, “Suitability of Amphibians and Reptiles for Translocation”. For further details on conservation and management objectives for this species, please consult the above noted resources, references provided or contact provincial and federal agencies.