Patterns in the Use of a Restored California Floodplain by Native and Alien Fishes

Moyle, Peter B.; Crain, Patrick; Whitener, Keith

doi:10.15447/sfews.2007v5iss5art1

Cited by 37 publications

(51 citation statements)

References 44 publications

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“…Conversely, there was no difference between floodplain and river in densities of zooplankton, likely because of the low residence time of the water. Similar food web benefits have been documented in the Cosumnes River floodplain, including high phytoplankton, invertebrate, and fish productivity within the floodplain, and biomass exports to adjacent habitats (Ahearn et al 2006;Grosholz and Gallo 2006;Moyle et al 2007;Jeffres et al 2008). …”

Section: Floodplainsupporting

confidence: 52%

“…This region also receives a seasonal floodplain subsidy from the Cosumnes River restored flood plain. Studies have shown that the Cosumnes River flood plain can provide important spawning and rearing habitat and food web resources for native fishes (Ahearn et al 2006;Grosholz and Gallo 2006;Moyle et al 2007;Jeffres et al 2008); however, the degree to which this production is transported into the tidal Delta has not been explored. Later, we further address his general topic of floodplain transport to the freshwater Delta (see "North Delta").…”

Section: South-central Deltamentioning

confidence: 99%

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Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Brown¹,

Kimmerer²,

Conrad³

et al. 2016

SFEWS

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This paper reviews and highlights recent research findings on food web processes since an earlier review by . We conduct this review within a conceptual framework of the DeltaSuisun food web, which includes both temporal and spatial components. The temporal component of our framework is based on knowledge that the landscape has changed markedly from historical conditions. The spatial component of our framework acknowledges that the food web is not spatially static; it varies regionally and across habitat types within regions. The review highlights the idea of a changing baseline with respect to food web function. New research also indicates that interactions between habitat-specific food webs vary across the current landscape. For example, based on early work in the south Delta, the food web associated with submerged aquatic vegetation was thought to provide little support to species of concern; however, data from other regions of the estuary suggest that this conceptual model may not apply across the entire region. Habitat restoration has been proposed as a method of re-establishing historic food web processes to support species of concern. Benefits are likely for species that directly access such restored habitats, but are less clear for pelagic species. Several topics require attention to further improve the knowledge of food webs needed to support effective management, including: (1) synthesis of factors responsible for low pelagic biomass; (2) monitoring and research on effects of harmful algal blooms; (3) broadening the scope of long-term monitoring; (4) determining benefits of tidal wetland restoration to species of concern, including evaluations of interactions of habitat-specific food webs; and (5) interdisciplinary analysis and synthesis. The only certainty is that food webs will continue to change in response to the changes in the physical environment and new species invasions.

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Section: Floodplainsupporting

confidence: 52%

Section: South-central Deltamentioning

confidence: 99%

Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Brown¹,

Kimmerer²,

Conrad³

et al. 2016

SFEWS

View full text Add to dashboard Cite

show abstract

“…With the increased connectivity, floodplain maintenance floods occur relatively frequently, with flows with a recurrence interval of one to two years capable of inducing heterogenous topography on the floodplain (Florsheim and Mount, 2002). In addition to promoting geomorphic processes and riparian regeneration, the restored connectivity allows floodplain activation floods to occur, with the associated key processes of splittail spawning, juvenile Chinook rearing (Figure 1), and food-web productivity (Figure 4b) Moyle et al, 2007). Williams et al (2009) recently explored the effect of altered flow regimes on the functionality of floodplains along the Sacramento River.…”

Section: Spawning and Rearing Habitat For Nativementioning

confidence: 99%

Ecologically Functional Floodplains: Connectivity, Flow Regime, and Scale¹

Opperman

Luster

McKenney

et al. 2010

J American Water Resour Assoc

232

147

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Opperman, Jeffrey J., Ryan Luster, Bruce A. McKenney, Michael Roberts, and Amanda Wrona Meadows, 2010. Ecologically Functional Floodplains: Connectivity, Flow Regime, and Scale. Journal of the American Water Resources Association (JAWRA) 46(2):211‐226. DOI: 10.1111/j.1752‐1688.2010.00426.x Abstract: This paper proposes a conceptual model that captures key attributes of ecologically functional floodplains, encompassing three basic elements: (1) hydrologic connectivity between the river and the floodplain, (2) a variable hydrograph that reflects seasonal precipitation patterns and retains a range of both high and low flow events, and (3) sufficient spatial scale to encompass dynamic processes and for floodplain benefits to accrue to a meaningful level. Although floodplains support high levels of biodiversity and some of the most productive ecosystems on Earth, they are also among the most converted and threatened ecosystems and therefore have recently become the focus of conservation and restoration programs across the United States and globally. These efforts seek to conserve or restore complex, highly variable ecosystems and often must simultaneously address both land and water management. Thus, such efforts must overcome considerable scientific, technical, and socioeconomic challenges. In addition to proposing a scientific conceptual model, this paper also includes three case studies that illustrate methods for addressing these technical and socioeconomic challenges within projects that seek to promote ecologically functional floodplains through river‐floodplain reconnection and/or restoration of key components of hydrological variability.

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“…Over the last three decades, process-based restoration involving levee breaching has reconnected some of the floodplain to the river in the lower reaches, including the site used in this study. Associated scientific research and monitoring has linked this increased hydrologic connectivity to sediment deposition, increases in topographic complexity, hydrochorus dispersal of native seeds within the floodplain, riparian forest establishment and succession, primary and secondary productivity, and greater provision of spawning and rearing habitat for native fish, including juvenile Chinook salmon and the endemic minnow, Sacramento splittail (Ahearn et al, 2006;Andrews, 1999;Florsheim & Mount, 2002;Jeffres et al, 2008;Moyle, Crain, & Whitener, 2007;Swenson, Whitener, & Eaton, 2003;Trowbridge, 2002).…”

Section: Study Sitementioning

confidence: 99%

Flood regime typology for floodplain ecosystem management as applied to the unregulated Cosumnes River of California, United States

2017

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Floods, with their inherent spatiotemporal variability, drive floodplain physical and ecological processes. This research identifies a flood regime typology and approach for flood regime characterization, using unsupervised cluster analysis of flood events defined by ecologically meaningful metrics, including magnitude, timing, duration, and rate of change as applied to the unregulated lowland alluvial Cosumnes River of California, United States. Flood events, isolated from the 107-year daily flow record, account for approximately two-thirds of the annual flow volume.Our analysis suggests six flood types best capture the range of flood event variability. Two types are distinguished primarily by high peak flows, another by later season timing and long duration, two by small magnitudes separated by timing, and the last by later peak flow within the flood event. The flood regime was also evaluated through inter-and intra-annual frequency of the identified flood types, their relationship to water year conditions, and their long-term trends. This revealed, for example, year-to-year variability in flood types, associations between wet years and high peak magnitude types and between dry years and the low magnitude, late season flood type, and increasing and decreasing contribution to total annual flow in the highest two peak magnitude classes, respectively. This research focuses needed attention on floodplains, flood hydrology, ecological implications, and the utility of extending flow regime classification typically used for environmental flow targets. The approach is broadly applicable and extensible to other systems, where findings can be used to understand physical processes, assess change, and improve management strategies.

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Patterns in the Use of a Restored California Floodplain by Native and Alien Fishes

Cited by 37 publications

References 44 publications

Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Ecologically Functional Floodplains: Connectivity, Flow Regime, and Scale¹

Flood regime typology for floodplain ecosystem management as applied to the unregulated Cosumnes River of California, United States

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Patterns in the Use of a Restored California Floodplain by Native and Alien Fishes

Cited by 37 publications

References 44 publications

Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Food Webs of the Delta, Suisun Bay, and Suisun Marsh: An Update on Current Understanding and Possibilities for Management

Ecologically Functional Floodplains: Connectivity, Flow Regime, and Scale1

Flood regime typology for floodplain ecosystem management as applied to the unregulated Cosumnes River of California, United States

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Product

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Ecologically Functional Floodplains: Connectivity, Flow Regime, and Scale¹