Ocean connectivity drives trophic support for consumers in an intermittently closed coastal lagoon

Young, Matthew J.; Feyrer, Frederick; Fong, Darren; Johnson, Rachel C.; Kraus, Tamara E.C.; Larwood, Veronica; Stumpner, Elizabeth B.; Young, M. B.

doi:10.1016/j.ecss.2021.107665

Cited by 5 publications

(1 citation statement)

References 54 publications

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“…Another study of a bar‐built estuary food web suggests a similar mechanism at play. Young et al (2022) found stickleback and prickly sculpin to have a greater overlap in diet and stable isotope niche during the summer than the spring; tidewater goby were also similar during the summer but no goby data were available from the spring. Spatial segregation of resource use could also lead to a lack of negative impacts of the two species, but that does not explain the temporal pattern of positive interactions we detected.…”

Section: Discussionmentioning

confidence: 99%

Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes

Wasserman

Rogers

Munch

et al. 2022

Limnology & Oceanography

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Fluctuations in the population abundances of interacting species are widespread. Such fluctuations could be a response to abiotic factors, biotic interactions, or a combination of the two. Correctly identifying the drivers is critical for effective population management. However, such effects are not always static in nature. Nonlinear relationships between abiotic factors and biotic interactions make it difficult to parse true effects. We used a type of nonlinear forecasting, empirical dynamic modeling, to investigate the context‐dependent species interaction between a common fish (three‐spine stickleback) and an endangered one (northern tidewater goby) in a fluctuating environment: a central California bar‐built estuary. We found little evidence for competition, instead both species largely responded independently to abiotic conditions. Stickleback were negatively affected by sandbar breaching. The strongest predictor of tidewater goby abundance was stickleback abundance; however, this effect was not a uniform negative effect of stickleback on goby as would be hypothesized under interspecific competition. The effect of stickleback on gobies was positive, though it was temporally restricted. Tidewater goby abundance in the summer was strongly positively correlated to stickleback abundance in the spring, which represents an offset in the reproductive and recruitment peaks in the two species that may help minimize competition and promote coexistence. Our study demonstrates how empirical dynamic modeling can be applied to understand drivers of population abundance in putative competitors and inform management for endangered species.

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Section: Discussionmentioning

confidence: 99%

Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes

Wasserman

Rogers

Munch

et al. 2022

Limnology & Oceanography

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Etiology of a Fish Kill, Including the Endangered Tidewater Goby (Eucyclogobius newberryi), in a Northeastern Pacific Coastal Lagoon

Feyrer,

Young,

Kraus

et al. 2023

Estuaries and Coasts

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Ecological disturbances such as fish kills can negatively impact ecosystem processes in coastal lagoons. To gain an understanding of factors causing fish kills, we examined conditions associated with a summertime fish kill in a northeastern Pacific coastal lagoon (Rodeo Lagoon, CA, USA). Examination of available data indicated the fish kill was likely caused by hypoxia involving the following etiology: (1) strong onshore winds (up to 12 m/s) mixed a stratified water column, (2) water column mixing transported nutrients from near the bed into the photic zone, (3) increased nutrient concentrations in the photic zone (> 200%) together with high solar irradiance fueled a phytoplankton bloom, (4) death and decomposition of phytoplankton (72% decrease in abundance) contributed to biological oxygen demand that led to (5) hypoxic conditions (as low as 0.6 mg/L) that caused the fish kill. The event resulted in the death of an estimated 3677 Tidewater Goby (Eucyclogobius newberryi), a species listed as endangered under the US Endangered Species Act, and numerous (but not enumerated) Threespine Stickleback (Gasterosteus aculeatus), unidentified sculpins (Cottidae), and macroinvertebrates (primarily Amphipoda). The processes contributing to the event are likely re-occurring phenomena responsible for observed periodic fish kills. Coastal lagoons with limited freshwater inflows and connection to the Pacific Ocean may retain nutrients and be susceptible to similar events.

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Carbon and nitrogen sources in tropical coastal lagoon food webs under variable hydrological conditions

Andrisoa,

Stieglitz,

Masimana

et al. 2024

Estuarine, Coastal and Shelf Science

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Ocean connectivity drives trophic support for consumers in an intermittently closed coastal lagoon

Cited by 5 publications

References 54 publications

Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes

Applying empirical dynamic modeling to distinguish abiotic and biotic drivers of population fluctuations in sympatric fishes

Etiology of a Fish Kill, Including the Endangered Tidewater Goby (Eucyclogobius newberryi), in a Northeastern Pacific Coastal Lagoon

Carbon and nitrogen sources in tropical coastal lagoon food webs under variable hydrological conditions

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