Lisa D. Siemens's research while affiliated with Simon Fraser University and other places

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Publication (1)

Fig. 1. Location of our 14 study streams on the central coast of...
Fig. 2. A typical stream on the central coast of British Columbia. The...
Fig. 3. Number of fruits per shrub in relation to (A) salmon spawning...
Fig. 4. Number of fruits per shrub in relation to (A) chum salmon...
Fig. 5. Salmon spawning density in relation to (A) seed count per...
Spawning salmon density influences fruit production of salmonberry (Rubus spectabilis)
Article
Full-text available
  • Nov 2020
Annual spawning migrations by Pacific salmon can provide substantial subsidies to nutrient‐limited freshwater and riparian ecosystems, which can affect the abundance, diversity, and physical characteristics of plant and animal species in these habitats. Here, we provide the first investigation of how salmon subsidies affect reproductive output in p...

Citations

... Subsidies fluctuate in amount, quality, timing, and duration, eliciting variable effects on ecosystems (Piovia-Scott et al., 2019;Subalusky & Post, 2019). In one study, larger amounts of spawning salmon significantly increased riparian per-shrub berry production in Canadian streams (Siemens et al., 2020), which potentially affects avian and mammalian consumers (Traveset & Willson, 1998). Another study found that changing the seasonal timing of subsidy addition to plants resulted in a shift from bottom-up effects for herbivores to top-down suppression by predators (Gratton & Denno, 2003). ...
Reference: Biogeographic features mediate marine subsidies to island food webs
Spawning salmon density influences fruit production of salmonberry (Rubus spectabilis)
Citing article
  • Nov 2020