The Salmon Disturbance Regime: Effects on Biofilm, Sediment and Water.

Albers, Sam

doi:10.24124/2011/bpgub733

Cited by 6 publications

(9 citation statements)

References 74 publications

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“…For example, the yearly migration of Pacific salmon (Oncorhynchus spp.) to their natal streams to spawn and die represents a salmon disturbance regime (Albers 2010) that elicits a spatially and temporally varied ecosystem response (Wipfli et al 1998;Moore and Schindler 2008). Salmon can be considered fundamental biogeomorphic agents (Petticrew and Albers 2010) acting on physical and biological elements of ecosystems at local to regional scales (Corenblit et al 2011).…”

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Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

Albers

Petticrew

2011

Limnology & Oceanography

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Recent work in salmon spawning streams has shown that sediment resuspended during nest construction flocculates with salmon organic matter to form suspended composite particles characterized by increased size and settling velocities. In a river system, these flocs have the potential to interact with benthic biofilms, suggesting a mechanism for the incorporation of organic matter into aquatic food webs. Using the Horsefly River spawning channel in central British Columbia, the spatial scale of biofilm floc trapping was evaluated for a salmon disturbance regime, which consists of the active digging of redds, spawning, and carcass decay. We stocked two sequential enclosures in the spawning channel with sockeye salmon (Oncorhynchus nerka) and established one upstream control enclosure. Biofilms were sampled for chlorophyll a, trapped sediment, and marine isotope tracers (d 15 N and d 13 C). In the active-spawn period, biofilm abundance was reduced due to spawning disturbance, with isotope values indicating low utilization of marine-derived nutrients (MDNs). During the post-spawn period, downstream biofilm abundance exceeded pre-spawn values, indicating a near-field nutrient pulse with isotope values reflecting biofilm utilization of MDNs. At the same time, an increase in biofilm trapping efficiency occurred in concert with a significant increase in the in situ particle size of suspended sediment, suggesting that flocs were a temporary storage site of MDNs. The retention of MDNs over short spatial scales acts to retard the flushing of MDNs to downstream rearing lakes. The magnitude of these processes has ecological implications on the downstream lake's productivity, thereby influencing the success of future salmon stocks.

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confidence: 99%

Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

Albers

Petticrew

2011

Limnology & Oceanography

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“…Over a 10-day cleaning period, a year's worth of accumulated streambed nutrients were released, potentially causing a dissolved nutrient spike which mostly attenuated before sampling commenced. /s), it can be assumed that the NH4 ' uptake length is short (Peterson et al 2001, Albers 2010) and that NH4 · was utilized directly in the stream by micro-and macro-organisms (Bilby et al 1996, Webster et al 2003, Levi et al 2013. Desirable nitrification conditions of high dissolved oxygen (DO) and plentiful DON and/ or NH 4 +can contribute to the rapid uptake of NH4 ' and low surface water NH4 + concentrations (Chapin et al 2011).…”

Section: Hyporheic Flow Pathsmentioning

confidence: 99%

“…The annual resource pulse of salmon nutrients can help support macroinvertebrate populations (Minakawa et al 2002, Lessard & Merritt 2006, Verspoor et al 2011, enrich resident fish populations and increase juvenile salmon survivorship (Bilby et al 1996, Rinella et al 2012, Guyette et al 2014, increase nutrient storage in basal resources, like biofilms (Albers 2010, Reisinger et al 2013, and promote terrestrial plant growth (Naiman et al 2002, Schindler et al 2003, Koyama et al 2005, Reisinger et al 2013). …”

Section: Chapter 3 Marine-derived Nutrient Dynamics In the Stream-rimentioning

confidence: 99%

“…The macroinvertebrate community is relatively simple, with dozens, as opposed to hundreds, of specific taxa, including some FFGs that are represented by only one species or family. The present study, in conjunction with studies from Albers (2010) and Albers & Petticrew (2012, present a useful baseline understanding of the biogeochemical nutrient dynamics that occur because of salmon spawn. From this simplified framework, strong food web models can be developed and interpreted with the intention of discovering critical linkages that elucidate the resilience of salmon populations.…”

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confidence: 93%

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The delivery, seasonal storage, and trophic transfer of marine-derived nutrients within a stream-riparian ecotone

Busch¹

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“…during their spawning cycle (Albers and Petticrew, 2012). Biofilm growth responds strongly to the addition of salmon carcasses, allowing marine-derived nutrients to persist in the environment, travel up the food web, and benefit rearing salmon in their natal streams (Albers, 2010). Many species of invertebrates, amphibians, and fish have physical adaptations allowing them to graze efficiently on biofilm (Kiffney and Richardson, 2001;Masclaux et al, 2012).…”

Section: Biofilm and Invertebrate Biomonitoringmentioning

confidence: 99%

Spatial and trophic biomonitoring of trace metals in aquatic environments following the Mt. Polley Mine tailings spill

Zwiebel¹

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A large (~25 M m 3) copper-gold tailings spill occurred in 2014 at the Mt. Polley Mine, which released solid and liquid waste and caused a debris flow into nearby Polley Lake and Quesnel Lake. This study examined the spatial and trophic patterns of trace elements in water bodies impacted by the spill between April and November 2016. Concentrations of trace metals in biofilm, invertebrates, sediments, and water were measured and analyzed using DGT and ICP-MS. Trophic positioning of sampled organisms was established using invertebrate functional feeding groups, and stable isotope ratios. Spatial results indicated that copper and vanadium concentrations in biofilm and invertebrates at impacted environments regress significantly with distance to the spill. Trophic results show evidence of copper bioaccumulation and selenium trophic magnification in biofilm and invertebrates from impacted waters. These effects appear to have seasonal variations, with stronger trophic and spatial relationships during spring overturn of Quesnel Lake.

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The Salmon Disturbance Regime: Effects on Biofilm, Sediment and Water.

Cited by 6 publications

References 74 publications

Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

The delivery, seasonal storage, and trophic transfer of marine-derived nutrients within a stream-riparian ecotone

Spatial and trophic biomonitoring of trace metals in aquatic environments following the Mt. Polley Mine tailings spill

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