English Sole Spawning Migration and Evidence for Feeding Site Fidelity in Puget Sound, U.S.A., with Implications for Contaminant Exposure

Moser, Mary L.; Myers, Mark S.; West, James E.; O’Neill, Sandra M.; Burke, Brian J.

doi:10.3955/046.087.0403

Cited by 14 publications

(12 citation statements)

References 40 publications

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“…), and some flatfishes (Moser et al. ), exhibit restricted patterns of movement and are likely to exploit one to several major subpopulations, but generally not the entire spatial distribution of the metapopulation (stock). In contrast, humpback whales (Dalla Rosa et al.…”

Section: Discussionmentioning

confidence: 99%

“…Many predators rely on herring when they move inshore around spawning season. Many crustaceans (Hines 1982, Stone andO'Clair 2001), echinoderms (Mattison et al 1976, Cieciel et al 2009), rockfishes and lingcod (Jorgensen et al 2006, Mitamura et al 2009, Tolimieri et al 2009, Beaudreau and Essington 2011, Green and Starr 2011, Freiwald 2012, harbor seals (Peterson et al 2012, Ward et al 2012, some seabirds (Peery et al 2009, Barbaree et al 2015, Lorenz et al 2017, and some flatfishes (Moser et al 2013), exhibit restricted patterns of movement and are likely to exploit one to several major subpopulations, but generally not the entire spatial distribution of the metapopulation (stock). In contrast, humpback whales (Dalla Rosa et al 2008, Kennedy et al 2014), orcas (Hauser et al 2007, Fearnbach et al 2014, some seabirds (Pearce et al 2005), sea lions (Merrick and Loughlin 1997, Fearnbach et al 2014, Kuhn and Costa 2014, fur seals , halibut (Loher 2008, Seitz et al 2011, Nielsen et al 2014, and gadiforms (Wespestad et al 1983, Hanselman et al 2014, Rand et al 2014 can, given ranges reported, access the geographic area covered by the stock (Table 4, see DataS1: Home_Range_Literature).…”

Section: Insights Into the Benefits Of Population Portfolios To Managmentioning

confidence: 99%

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Spatial variation in exploited metapopulations obscures risk of collapse

Okamoto

Hessing‐Lewis

Samhouri

et al. 2020

Ecological Applications

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Unanticipated declines among exploited species have commonly occurred despite harvests that appeared sustainable prior to collapse. This is particularly true in the oceans where spatial scales of management are often mismatched with spatially complex metapopulations. We explore causes, consequences, and potential solutions for spatial mismatches in harvested metapopulations in three ways. First, we generate novel theory illustrating when and how harvesting metapopulations increases spatial variability and in turn masks local‐scale volatility. Second, we illustrate why spatial variability in harvested metapopulations leads to negative consequences using an empirical example of a Pacific herring metapopulation. Finally, we construct a numerical management strategy evaluation model to identify and highlight potential solutions for mismatches in spatial scale and spatial variability. Our results highlight that spatial complexity can promote stability at large scales, however, ignoring spatial complexity produces cryptic and negative consequences for people and animals that interact with resources at small scales. Harvesting metapopulations magnifies spatial variability, which creates discrepancies between regional and local trends while increasing risk of local population collapses. Such effects asymmetrically impact locally constrained fishers and predators, which are more exposed to risks of localized collapses. Importantly, we show that dynamically optimizing harvest can minimize local risk without sacrificing yield. Thus, multiple nested scales of management may be necessary to avoid cryptic collapses in metapopulations and the ensuing ecological, social, and economic consequences.

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Section: Discussionmentioning

confidence: 99%

Section: Insights Into the Benefits Of Population Portfolios To Managmentioning

confidence: 99%

Spatial variation in exploited metapopulations obscures risk of collapse

Okamoto

Hessing‐Lewis

Samhouri

et al. 2020

Ecological Applications

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show abstract

“…Although the displacement from the release locations from the PSAT study matches the scale of the dispersive movement state observed in this study, the demonstrated ability of fish in the current study to return to within a few hundred meters of their original locations after undertaking forays indicates that SF for Pacific halibut likely occurs at much finer spatial scales than can be detected using PSATs. SF has also been observed for many other flatfish species (Hun ter et al 2003, Solmundsson et al 2005, Sackett et al 2008, Dando 2011, Moser et al 2013.…”

Section: Individual Dispersal Patternsmentioning

confidence: 71%

Characterizing Pacific halibut movement and habitat in a Marine Protected Area using net squared displacement analysis methods

Nielsen¹,

Hooge²,

Taggart³

et al. 2014

Mar. Ecol. Prog. Ser.

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We characterized small-scale movement patterns and habitat of acoustic-tagged adult (68 to 220 cm total length) female Pacific halibut during summer and fall in Glacier Bay National Park, Alaska, a marine protected area (MPA). We used net squared displacement analysis methods to identify 2 movement states, characterize individual dispersal patterns, and relate habitat variables to movement scales. Movement states identified for 32 of 43 halibut consisted of (1) a non-dispersive 'residential' movement state (n = 27 fish), where movement was restricted to an average movement radius of 401.3 m (95% CI 312.2−515.9 m) over a median observation period of 58 d, and (2) a 'dispersive' movement state (n = 15 fish), where movements of up to 18 km occurred over a median observation period of 27 d. Some fish (n = 10) exhibited both movement states. Individual fish demonstrated primarily non-random dispersal patterns including home range (n = 17), site fidelity (return to previously occupied locations following forays, n = 6), and shifted home ranges (n = 5). However, we also observed a random dispersal pattern (n = 4) with an estimated mean ± SE diffusion rate of 0.9 ± 0.05 km 2 d −1. Home range size increased with depth but not fish size. Home range locations were associated with heterogeneous habitat, intermediate tidal velocities, and depths <100 m. Observations of non-dispersive movement patterns, relatively small home ranges, and site fidelity for adult females suggest that MPAs such as Glacier Bay may have utility for conservation of Pacific halibut broodstock.

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“…Use of the NA by these geographically diverse groups illustrates the importance of connectivity among populations and habitats in Puget Sound, as other stocks and nonsalmonid species (Levin and Stunz ; Moser et al. ) likely have similar life history requirements (Gillanders et al. ; Rose ).…”

Section: Discussionmentioning

confidence: 99%

Seasonal Use of a Nonnatal Marine Basin by Juvenile Hatchery Chinook Salmon

Hayes

Hodgson²,

Ellings³

et al. 2019

Mar Coast Fish

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Information on the movement patterns of fishes is essential for managers that are making critical resource decisions. We examined the frequency of a keystone species, Chinook Salmon Oncorhynchus tshawytscha that migrated from different marine basins to the Nisqually River estuary, which lies within the southernmost marine basin (hereafter, “South basin”) in Puget Sound (Washington, USA). Hatchery‐reared juvenile fish were sampled by using beach seine, lampara seine, and fyke nets to determine seasonal trends in frequency, habitat use, and the influence of different capture methods. The captured fish originated from three marine basins, nine Puget Sound rivers, and fourteen hatcheries. The data revealed a consistent pattern showing that most of the tagged fish (72%) were from the nearby Nisqually River (in the South basin), but fish from more northerly marine basins (hereafter, “Outbasin”) were also common. Although the majority of the tagged fish (99%) that were captured during April and May were originally released into rivers adjacent to the South basin, 90% of the fish that were captured in August and September had originated from rivers adjacent to Outbasin locations (up to 130 km distant). A comparison of sampling methods showed that the beach seine produced 27% Outbasin fish compared with 53% that were obtained with the lampara seine. The analysis of habitat use suggested that during June and July, more Outbasin fish (>40%) were captured in delta flats and nearshore habitats than in estuarine emergent marsh habitat (26%). Release location (river basin), but not distance, appeared to be an important factor that influenced the percentage of Outbasin fish that were captured in the South basin. However, it appeared that the fish that were released at light weights and early dates were more likely to be captured. Information on the movement of juvenile salmon to a nonnatal marine basin may help to increase our understanding of features of life history and survival, and it has application elsewhere, as many marine species are artificially propagated, released in large numbers, and have the potential to use nonnatal habitats.

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English Sole Spawning Migration and Evidence for Feeding Site Fidelity in Puget Sound, U.S.A., with Implications for Contaminant Exposure

Cited by 14 publications

References 40 publications

Spatial variation in exploited metapopulations obscures risk of collapse

Spatial variation in exploited metapopulations obscures risk of collapse

Characterizing Pacific halibut movement and habitat in a Marine Protected Area using net squared displacement analysis methods

Seasonal Use of a Nonnatal Marine Basin by Juvenile Hatchery Chinook Salmon

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