Subjects -> ENVIRONMENTAL STUDIES (Total: 913 journals)
    - ENVIRONMENTAL STUDIES (810 journals)
    - POLLUTION (31 journals)
    - WASTE MANAGEMENT (18 journals)

ENVIRONMENTAL STUDIES (810 journals)            First | 1 2 3 4 5     

Showing 601 - 378 of 378 Journals sorted alphabetically
Microplastics and Nanoplastics     Open Access   (Followers: 1)
Mine Water and the Environment     Hybrid Journal   (Followers: 6)
Mitigation and Adaptation Strategies for Global Change     Open Access   (Followers: 8)
Modeling Earth Systems and Environment     Hybrid Journal   (Followers: 1)
Monteverdia     Open Access   (Followers: 1)
Multequina     Open Access  
Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis     Hybrid Journal   (Followers: 5)
Mutation Research/Genetic Toxicology and Environmental Mutagenesis     Hybrid Journal   (Followers: 8)
Nano Select     Open Access   (Followers: 1)
Nanotechnology for Environmental Engineering     Hybrid Journal  
Nativa     Open Access   (Followers: 1)
Natur und Recht     Hybrid Journal   (Followers: 6)
Natural Areas Journal     Full-text available via subscription   (Followers: 10)
Natural Hazards     Hybrid Journal   (Followers: 60)
Natural Resources     Open Access  
Natural Resources & Engineering     Hybrid Journal  
Natural Resources and Environmental Issues     Open Access   (Followers: 2)
Nature and Culture     Full-text available via subscription   (Followers: 12)
Nature-Based Solutions     Open Access   (Followers: 3)
Nepal Journal of Environmental Science     Open Access   (Followers: 4)
NeuroToxicology     Hybrid Journal   (Followers: 1)
Neurotoxicology and Teratology     Hybrid Journal   (Followers: 3)
NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy     Full-text available via subscription   (Followers: 2)
New Zealand Journal of Environmental Law     Full-text available via subscription   (Followers: 6)
NJAS : Wageningen Journal of Life Sciences     Hybrid Journal  
Novos Cadernos NAEA     Open Access  
npj Urban Sustainability     Open Access  
Observatorio Medioambiental     Open Access  
Occupational and Environmental Medicine     Hybrid Journal   (Followers: 18)
Ochrona Srodowiska i Zasobów Naturalnych : Environmental Protection and Natural Resources     Open Access  
Oecologia     Hybrid Journal   (Followers: 56)
Oikos     Hybrid Journal   (Followers: 58)
One Earth     Hybrid Journal   (Followers: 5)
One Ecosystem     Open Access  
Open Environmental Research Journal     Open Access   (Followers: 1)
Open Journal of Ecology     Open Access   (Followers: 8)
Open Journal of Marine Science     Open Access   (Followers: 6)
Open Journal of Modern Hydrology     Open Access   (Followers: 6)
Our Nature     Open Access   (Followers: 2)
Pace Environmental Law Review     Open Access   (Followers: 5)
Packaging, Transport, Storage & Security of Radioactive Material     Hybrid Journal   (Followers: 3)
Palaeobiodiversity and Palaeoenvironments     Hybrid Journal   (Followers: 3)
Particle and Fibre Toxicology     Open Access   (Followers: 2)
Pastos y Forrajes     Open Access  
Peer Community Journal     Open Access   (Followers: 6)
Perspectives in Ecology and Conservation     Full-text available via subscription   (Followers: 6)
Pharmacology & Therapeutics     Hybrid Journal   (Followers: 3)
Pharmacology Biochemistry and Behavior     Hybrid Journal   (Followers: 2)
Physio-Géo     Open Access   (Followers: 1)
Pittsburgh Journal of Environmental and Public Health Law     Open Access   (Followers: 1)
Planet     Open Access   (Followers: 4)
Planeta Amazônia : Revista Internacional de Direito Ambiental e Políticas Públicas     Open Access  
Planning & Environmental Law: Issues and decisions that impact the built and natural environments     Hybrid Journal   (Followers: 8)
Plant Ecology & Diversity     Partially Free   (Followers: 13)
Plant Knowledge Journal     Open Access   (Followers: 2)
Plant, Cell & Environment     Hybrid Journal   (Followers: 10)
Plant-Environment Interactions     Open Access  
Plants, People, Planet     Open Access   (Followers: 2)
Polar Journal     Hybrid Journal   (Followers: 1)
Political Studies     Hybrid Journal   (Followers: 45)
Political Studies Review     Hybrid Journal   (Followers: 19)
Population and Environment     Hybrid Journal   (Followers: 6)
Population Ecology     Hybrid Journal   (Followers: 12)
Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management     Full-text available via subscription  
Presence: Virtual and Augmented Reality     Hybrid Journal   (Followers: 3)
Proceedings of the Institution of Civil Engineers - Waste and Resource Management     Hybrid Journal   (Followers: 1)
Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment     Hybrid Journal   (Followers: 3)
Proceedings of the International Academy of Ecology and Environmental Sciences     Open Access   (Followers: 2)
Proceedings of the Vertebrate Pest Conference     Open Access   (Followers: 2)
Process Integration and Optimization for Sustainability     Hybrid Journal  
Process Safety and Environmental Protection     Hybrid Journal   (Followers: 4)
Producción + Limpia     Open Access  
Progress in Disaster Science     Open Access   (Followers: 3)
Progress in Industrial Ecology, An International Journal     Hybrid Journal   (Followers: 2)
Projets de Paysage     Open Access   (Followers: 1)
Psychological Assessment     Full-text available via subscription   (Followers: 14)
Public Money & Management     Hybrid Journal   (Followers: 7)
Quaternary     Open Access   (Followers: 2)
Recursos Rurais     Open Access  
REDER : Revista de Estudios Latinoamericanos sobre Reducción del Riesgo de Desastres     Open Access  
Regional Environmental Change     Open Access   (Followers: 3)
Regional Sustainability     Open Access  
Rekayasa     Open Access   (Followers: 2)
Remediation Journal     Hybrid Journal   (Followers: 8)
Remote Sensing Applications : Society and Environment     Full-text available via subscription   (Followers: 11)
Remote Sensing Letters     Hybrid Journal   (Followers: 48)
Rendiconti Lincei     Hybrid Journal  
Renewable Energy and Environmental Sustainability     Open Access   (Followers: 3)
Renewable Energy Focus     Full-text available via subscription   (Followers: 7)
Research & Reviews : Journal of Ecology     Full-text available via subscription   (Followers: 3)
Research and Practice for Persons with Severe Disabilities     Full-text available via subscription   (Followers: 4)
Research Journal of Environmental Sciences     Open Access   (Followers: 2)
Research Journal of Environmental Toxicology     Open Access   (Followers: 2)
Resources     Open Access  
Resources and Environment     Open Access   (Followers: 2)
Resources, Conservation & Recycling     Hybrid Journal   (Followers: 20)
Resources, Conservation & Recycling : X     Open Access   (Followers: 1)
Resources, Conservation & Recycling Advances     Open Access   (Followers: 1)
Rethinking Ecology     Open Access  
Reuse/Recycle Newsletter     Hybrid Journal  
Review of Agricultural, Food and Environmental Studies     Hybrid Journal  
Review of Environmental Economics and Policy     Hybrid Journal   (Followers: 13)
Revista AIDIS de Ingeniería y Ciencias Ambientales. Investigación, desarrollo y práctica     Open Access  
Revista Ambivalências     Open Access  
Revista Brasileira de Ciências Ambientais     Open Access   (Followers: 3)
Revista Brasileira de Meio Ambiente     Open Access  
Revista Chapingo. Serie Ciencias Forestales y del Ambiente     Open Access  
Revista Ciência, Tecnologia & Ambiente     Open Access  
Revista de Ciencias Ambientales     Open Access  
Revista de Direito Ambiental e Socioambientalismo     Open Access  
Revista de Direito e Sustentabilidade     Open Access  
Revista de Gestão Ambiental e Sustentabilidade - GeAS     Open Access  
Revista de Investigación en Agroproducción Sustentable     Open Access  
Revista de Salud Ambiental     Open Access  
Revista ECOVIDA     Open Access   (Followers: 4)
Revista Eletrônica de Gestão e Tecnologias Ambientais     Open Access  
Revista Geama     Open Access  
Revista Hábitat Sustenable     Open Access  
Revista Iberoamericana Ambiente & Sustentabilidad     Open Access  
Revista Kawsaypacha: Sociedad y Medio Ambiente     Open Access  
Revista Laborativa     Open Access  
Revista Meio Ambiente e Sustentabilidade     Open Access  
Revista Mundi Meio Ambiente e Agrárias     Open Access  
Revista Verde de Agroecologia e Desenvolvimento Sustentável     Open Access   (Followers: 3)
Rivista di Studi sulla Sostenibilità     Full-text available via subscription   (Followers: 2)
RUDN Journal of Ecology and Life Safety     Open Access  
Russian Journal of Ecology     Hybrid Journal   (Followers: 1)
Safety Science     Hybrid Journal   (Followers: 30)
San Francisco Estuary and Watershed Science     Open Access  
SAR and QSAR in Environmental Research     Hybrid Journal   (Followers: 1)
Saúde e Meio Ambiente : Revista Interdisciplinar     Open Access  
Scandinavian Journal of Work, Environment & Health     Partially Free   (Followers: 13)
Science of The Total Environment     Hybrid Journal   (Followers: 41)
Sciences Eaux & Territoires : la Revue du Cemagref     Open Access  
Smart Grid and Renewable Energy     Open Access   (Followers: 9)
Social and Environmental Accountability Journal     Hybrid Journal   (Followers: 3)
Sociedad y Ambiente     Open Access  
Soil and Sediment Contamination: An International Journal     Hybrid Journal   (Followers: 3)
Soil and Tillage Research     Hybrid Journal   (Followers: 10)
South Australian Geographical Journal     Open Access  
South Pacific Journal of Natural and Applied Sciences     Hybrid Journal  
Southern African Journal of Environmental Education     Open Access  
Southern Forests : a Journal of Forest Science     Hybrid Journal   (Followers: 4)
Sriwijaya Journal of Environment     Open Access  
Stochastic Environmental Research and Risk Assessment     Hybrid Journal   (Followers: 4)
Strategic Planning for Energy and the Environment     Hybrid Journal   (Followers: 4)
Studies in Conservation     Hybrid Journal   (Followers: 17)
Sustainability     Open Access   (Followers: 24)
Sustainability Agri Food and Environmental Research     Open Access   (Followers: 4)
Sustainability in Environment     Open Access   (Followers: 3)
Sustainable and Resilient Infrastructure     Hybrid Journal  
Sustainable Cities and Society     Hybrid Journal   (Followers: 22)
Sustainable Development     Hybrid Journal   (Followers: 14)
Sustainable Development Law & Policy     Open Access   (Followers: 12)
Sustainable Development Strategy and Practise     Open Access   (Followers: 4)
Sustainable Horizons     Full-text available via subscription   (Followers: 10)
Sustainable Technology and Entrepreneurship     Full-text available via subscription   (Followers: 7)
Sustinere : Journal of Environment and Sustainability     Open Access  
TECHNE - Journal of Technology for Architecture and Environment     Open Access   (Followers: 11)
Tecnogestión     Open Access  
Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica     Open Access  
The Historic Environment : Policy & Practice     Hybrid Journal   (Followers: 4)
The International Journal on Media Management     Hybrid Journal   (Followers: 7)
The Ring     Open Access  
Theoretical Ecology     Hybrid Journal   (Followers: 14)
Toxicologic Pathology     Hybrid Journal   (Followers: 18)
Toxicological & Environmental Chemistry     Hybrid Journal   (Followers: 2)
Toxicological Sciences     Hybrid Journal   (Followers: 11)
Toxicology     Hybrid Journal   (Followers: 18)
Toxicology and Applied Pharmacology     Hybrid Journal   (Followers: 24)
Toxicology and Industrial Health     Hybrid Journal   (Followers: 6)
Toxicology in Vitro     Hybrid Journal   (Followers: 11)
Toxicology Letters     Hybrid Journal   (Followers: 15)
Toxicology Mechanisms and Methods     Hybrid Journal   (Followers: 7)
Toxicon     Hybrid Journal   (Followers: 5)
Toxicon : X     Open Access  
Toxin Reviews     Hybrid Journal  
Transactions on Environment and Electrical Engineering     Open Access  
Transportation Research Part D: Transport and Environment     Hybrid Journal   (Followers: 27)
Transportation Safety and Environment     Open Access   (Followers: 1)
Transylvanian Review of Systematical and Ecological Research     Open Access  
Trends in Ecology & Evolution     Full-text available via subscription   (Followers: 277)
Trends in Environmental Analytical Chemistry     Hybrid Journal   (Followers: 3)
Trends in Pharmacological Sciences     Full-text available via subscription   (Followers: 20)
Tropicultura     Open Access  
Turkish Journal of Engineering and Environmental Sciences     Open Access   (Followers: 1)
UCLA Journal of Environmental Law and Policy     Open Access   (Followers: 2)
UD y la Geomática     Open Access  
Universidad y Ciencia     Open Access  
Universidad y Ciencia     Open Access  
UNM Environmental Journals     Open Access  
Urban Studies     Hybrid Journal   (Followers: 80)
Urban Transformations     Open Access   (Followers: 2)
Veredas do Direito : Direito Ambiental e Desenvolvimento Sustentável     Open Access  
VertigO - la revue électronique en sciences de l’environnement     Open Access   (Followers: 1)
Villanova Environmental Law Journal     Open Access   (Followers: 1)
Waste Management & Research     Hybrid Journal   (Followers: 7)
Water Conservation Science and Engineering     Hybrid Journal  
Water Environment Research     Full-text available via subscription   (Followers: 43)
Water International     Hybrid Journal   (Followers: 19)

  First | 1 2 3 4 5     

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San Francisco Estuary and Watershed Science
Journal Prestige (SJR): 0.835
Citation Impact (citeScore): 2
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1546-2366
Published by eScholarship Homepage  [73 journals]
  • Habitat Use by Breeding Waterbirds in Relation to Tidal Marsh Restoration
           in the San Francisco Bay Estuary

    • Authors: Schacter; Carley R. , Hartman, C. Alex , Herzog, Mark P. , Peterson, Sarah H. , Tarjan, L. Max , Wang, Yiwei , Strong, Cheryl , Tertes, Rachel , Warnock, Nils , Ackerman, Joshua T.
      Abstract: The South Bay Salt Pond Restoration Project aims to restore many former salt production ponds, now managed for wildlife and water quality, to tidal marsh. However, because managed ponds support large densities of breeding waterbirds, reduction of pond habitat may influence breeding waterbird distribution and abundance. We investigated habitat use associated with breeding, feeding, and roosting behaviors during the breeding season for American Avocets (Recurvirostra americana), Black-necked Stilts (Himantopus mexicanus), Forster’s Terns (Sterna forsteri), and Caspian Terns (Hydroprogne caspia) in south San Francisco Bay in 2019 after substantial tidal marsh restoration, and compared results to a 2001 survey (before restoration). In 2019, managed ponds (26% of currently available habitat) were selected by waterbirds engaged in breeding behaviors (> 39% of observations), foraging (> 42%), and roosting (> 73%). Waterbirds avoided tidal...
      PubDate: Thu, 8 Jun 2023 00:00:00 +0000
  • A Note on Conservative Mixing: Implications for Selecting
           Salinity-Transport Model Constituents in the San Francisco Estuary

    • Authors: Hutton; Paul H. , Roy, Sujoy B.
      Abstract: The deviation of specific electrical conductance (EC) from conservative mixing behavior is well-established in the scientific literature. This principle is based on the observation that, as salt concentration in a water sample increases, the mobility of individual ions in the sample decreases, and thus their ability to conduct electricity decreases. Despite this fact, some commonly used models for salinity transport in the San Francisco Estuary (estuary) utilize EC as a primary simulation constituent, treating it as a conservative quantity. Such a modeling approach has likely been followed to exploit the wide availability of EC data for model calibration and validation, and to obviate the need to translate between EC and salinity in a domain characterized by multiple source waters with varying ionic make-ups. Arguably, this approach provides a reasonable trade-off between data translation error and model simulation error. In this paper, we critically evaluate this approach, employing...
      PubDate: Thu, 8 Jun 2023 00:00:00 +0000
  • Flow Augmentations Modify an Estuarine Prey Field

    • Authors: Lee; Calvin Y. , Smith, April G. , Hassrick, Jason L. , Kalmbach, Andrew J. , Sabal, Megan C. , Cox, Daniel M. , Grimaldo, Lenny F. , Schultz, Andrew
      Abstract: Zooplankton density and community composition in estuaries can be affected by variation in freshwater inputs, with important implications for higher trophic levels. In the San Francisco Estuary, management agencies have initiated autumn flow augmentations in the form of changes to reservoir releases or to exported water from the South Delta to increase and improve available habitat for endangered Delta Smelt, Hypomesus transpacificus, during the season when their body condition most influences fecundity. Autumn flow augmentation only occurs in years with higher precipitation, effectively moving the Low-Salinity Zone (LSZ) downstream to key foraging habitats for Delta Smelt in Suisun Bay and Suisun Marsh. To assess whether augmented flow enhanced prey resources for Delta Smelt, we compared autumn zooplankton abundance, biomass, spatial distribution, and community composition in years when flow was augmented (2017, 2019) with reference years when flow was not augmented...
      PubDate: Thu, 8 Jun 2023 00:00:00 +0000
  • What Controls Suspended-Sediment Concentration and Export in Flooded
           Agricultural Tracts in the Sacramento–San Joaquin Delta'

    • Authors: Lacy; Jessica R. , Dailey, Evan T. , Morgan–King, Tara L.
      Abstract: We investigated wind-wave and suspended-sediment dynamics in Little Holland Tract and Liberty Island, two subsided former agricultural tracts in the Cache Slough complex in the northern Sacramento-San Joaquin Delta which were restored to tidal shallows to improve habitat. Turbidity, and thus suspended-sediment concentration (SSC), is important to habitat quality because some species of native fishes, including the Delta Smelt, are found preferentially in more turbid waters. Data from October 2015 to August 2016 show that average SSC was greater within Little Holland Tract than in the primary breach that connects the basin to surrounding channels: approximately twice as great at a shallower station farther from the breach and 15% greater at a deeper station closer to the breach. Suspended-sediment concentration within Little Holland Tract was directly related to wave shear stress and inversely related to water depth, based on linear regression. We used measurements of suspended-sediment...
      PubDate: Tue, 21 Mar 2023 00:00:00 +000
  • The Flood Risk and Water Supply Implications of Seasonal Precipitation
           Reconstructions in Northern California

    • Authors: Howard; Ian M. , Stahle, David W. , Torbenson, Max C. A. , Granato–Souza, Daniela , Poulsen, Cody
      Abstract: Subsets of annual and sub-annual tree-ring chronologies are used to reconstruct seasonal precipitation totals in northern California. The specific seasons selected for reconstruction are based on the strongest monthly precipitation signals recorded in the tree-ring data. Earlywood width of gray pine is best correlated with Oct-Dec precipitation at the onset of the wet season. Latewood width of ponderosa pine is correlated with Mar–Apr totals at the end of the wet season. These earlywood and latewood width chronologies are used to develop separate reconstructions of precipitation for the “autumn” (Oct–Dec) and “spring” (Mar–Apr) seasons. Total ring-width chronologies of blue oak are highly correlated with October–April precipitation totals and are used to reconstruct precipitation for the “wet season.” We then computed one additional skillful reconstruction by subtracting the reconstructed spring totals from the wet season precipitation estimates (i.e., “winter” [Oct–Feb]). We...
      PubDate: Tue, 21 Mar 2023 00:00:00 +000
  • Data to Decisions: How to Make Science More Relevant for Management of the
           San Francisco Estuary

    • Authors: Sommer; Ted , Conrad, J. Louise , Culberson, Steven
      Abstract: Science is the foundation for a wide range of activities, including evaluation, innovation, and technology, which in turn support management. Without good science, resource management in regions such as the San Francisco Estuary is handicapped, and must proceed with outdated conceptual models, operating strategies, and technologies. At the same time, we recognize that poor communication can interfere with conversations between scientists and managers, even when high-quality data and publications are available. In this essay, we have tried to address an important part of this issue: helping scientists to understand how to produce actionable science. Our hope is that these suggestions will, at the least, help improve dialog between scientists and the managers responsible for the estuary’s resources.
      PubDate: Tue, 21 Mar 2023 00:00:00 +000
  • Investigating Factors Contributing to Phytoplankton Biomass Declines in
           the Lower Sacramento River

    • Authors: Mussen; Timothy D. , Driscoll, Sara , Cook, Michael E. , Nordin, Justin D. , Guerin, Marianne , Rachiele, Richard , Smith, Donald J. , Mine Berg, Gry , Thompson, Lisa C.
      Abstract: Phytoplankton subsidies from river inputs and wetland habitats can be important food sources for pelagic organisms in the Sacramento–San Joaquin Delta (Delta). However, while the Sacramento River is a key contributor of water to the Delta, providing 80% of the mean annual inflow, the river is only a minor source of phytoplankton to the system. The reason for low phytoplankton biomass in the Sacramento River is not well understood but appears to be associated with a 65-km stretch of the lower river where chlorophyll-a (Chl-a) concentrations can decline by as much as 90%. We conducted two surveys along the lower Sacramento River, in spring and fall of 2016, to investigate the relative contributions of different factors potentially driving this Chl-a decline. Our study evaluated the change in Chl-a concentrations as a result of dilution from tributaries, light availability, nutrient concentrations, nutrient uptake, phytoplankton productivity, zooplankton grazing, and clam grazing....
      PubDate: Tue, 21 Mar 2023 00:00:00 +000
  • Remote Sensing of Primary Producers in the Bay–Delta

    • Authors: Hestir; Erin , Dronova, Iryna
      Abstract: Remote-sensing methods are being used to study a growing number of issues in the San Francisco Estuary, such as (1) detecting the optical properties of chlorophyll-a concentrations and dissolved organic matter to assess productivity and the nature of carbon inputs, (2) creating historical records of invasive aquatic vegetation expansion through space and time, (3) identifying origins and expansions of invasions, and (4) supporting models of greenhouse-gas sequestration by expanding restoration projects. Technological capabilities of remote sensing have likewise expanded to include a wide array of opportunities: from boat-mounted sensors, human-operated low-flying planes, and aerial drones, to freely accessible satellite imagery. Growing interest in coordinating these monitoring methods in the name of collaboration and cost-efficiency has led to the creation of diverse expert teams such as the Remote Imagery Collaborative, and monitoring frameworks such as the Interagency...
      PubDate: Thu, 2 Feb 2023 00:00:00 +0000
  • Carbon Sequestration and Subsidence Reversal in the Sacramento–San
           Joaquin Delta and Suisun Bay: Management Opportunities for Climate
           Mitigation and Adaptation

    • Authors: Windham–Myers; Lisamarie , Oikawa, Patty , Deverel, Steve , Chapple, Dylan , Drexler, Judith Z. , Stern, Dylan
      Abstract: The aquatic landscapes of the Sacramento–San Joaquin Delta (hereafter, the Delta) and Suisun Bay represent both a significant past and future soil carbon stock. Historical alterations of hydrologic flows have led to depletion of soil carbon stocks via emissions of carbon dioxide (CO2), and loss of elevation as a result of subsidence. Optimizing ecosystem hydrology in the Delta and Suisun Bay could both reduce and reverse subsidence while also providing significant opportunities for climate mitigation and adaptation. Emissions of greenhouse gases (GHGs)—notably CO2, methane (CH4 ), and nitrous oxide (N2O)—contribute to global warming at different rates and intensities, requiring GHG accounting and modeling to assess the relative benefits of management options. Decades of data collection, model building, and map development suggest that past and current management actions have both caused—and can mitigate—losses of soil carbon. We review here the magnitude of potential GHG offsets,...
      PubDate: Wed, 1 Feb 2023 00:00:00 +0000
  • Landscape Transformation and Variation in Invasive Species Abundance Drive
           Change in Primary Production of Aquatic Vegetation in the Sacramento–San
           Joaquin Delta

    • Authors: Boyer; Katharyn E. , Safran, Samuel M. , Khanna, Shruti , Patten, Melissa V.
      Abstract: Conversion of wetlands in the Sacramento–San Joaquin Delta beginning in the mid-1800s resulted in a pronounced shift from a wetland-dominated food web to one driven by open-water primary producers. Submersed and floating aquatic vegetation (SAV and FAV) now rank highest in potential net primary production (NPP) among producer groups, and provide a comparable amount of carbon to the detrital food web as marshes. However, important details of this contribution that relate to shifts in species composition and habitat extent were not understood. Here, we review how changes in aquatic vegetation influence NPP and trophic support from the historical to modern periods, within the modern period (the last 2 decades), and under future management and climate scenarios. We estimate that NPP of SAV and FAV during the historical period was approximately half that of today, before increases in open water and introduction of the highly productive water primrose. During the modern period (the...
      PubDate: Wed, 1 Feb 2023 00:00:00 +0000
  • Ecology and Ecosystem Effects of Submerged and Floating Aquatic Vegetation
           in the Sacramento–San Joaquin Delta

    • Authors: Christman; Mairgareth A. , Khanna, Shruti , Drexler, Judith Z. , Young, Matthew J.
      Abstract: Substantial increases in non-native aquatic vegetation have occurred in the upper San Francisco Estuary over the last 2 decades, largely from the explosive growth of a few submerged and floating aquatic plant species. Some of these species act as ecosystem engineers by creating conditions that favor their further growth and expansion as well as by modifying habitat for other organisms. Over the last decade, numerous studies have investigated patterns of expansion and turn-over of aquatic vegetation species; effects of vegetation on ecosystem health, water quality, and habitat; and effects of particular species or communities on physical processes such as carbon and sediment dynamics. Taking a synthetic approach to evaluate what has been learned over the last few years has shed light on just how significant aquatic plant species and communities are to ecosystems in the Sacramento-San Joaquin Delta. Aquatic vegetation affects every aspect of the physical and biotic environment,...
      PubDate: Wed, 1 Feb 2023 00:00:00 +0000
  • Invasive Aquatic Vegetation in the Sacramento–San Joaquin Delta and
           Suisun Marsh: The History and Science of Control Efforts and
           Recommendations for the Path Forward

    • Authors: Conrad; J. Louise , Thomas, Madison , Jetter, Karen , Madsen, John , Pratt, Paul , Moran, Patrick , Takekawa, John , Darin, Gina Skurka , Kenison, Lydia
      Abstract: Invasive aquatic vegetation (IAV) is a management challenge in the Sacramento–San Joaquin Delta and the Suisun Marsh that has commanded major resource investment for 4 decades. We review the history and supporting science of chemical, biological, and mechanical control of IAV in the Delta and Suisun March, and in flowing waters outside the region. Outside the Delta, there is a significant history of research on IAV control in lotic systems, but few studies come from tidal environments, and we found no investigations at a spatial scale like that of the Delta. The science of control efforts in the Delta is nascent but has seen marked growth over the recent decade. Since 1983, control of invasive submerged and floating species has been centralized within the California State Parks Division of Boating and Waterways (CDBW). The program relies on herbicides, with an annual budget that has exceeded $12.5 million since 2015. However, the results have been mixed because of the challenge...
      PubDate: Wed, 1 Feb 2023 00:00:00 +0000
  • Status, Trends, and Drivers of Harmful Algal Blooms Along the
           Freshwater-to-Marine Gradient in the San Francisco Bay–Delta System

    • Authors: Kudela; Raphael M. , Howard, Meredith D. A. , Monismith, Stephen , Paerl, Hans W.
      Abstract: Harmful algal blooms (HABs) are on the rise worldwide. Known drivers for the proliferation and intensification of HAB events include increasing nutrient pollution, climate change, regulation and modification of hydrological flow, and the combined effect of climate drivers and nutrient pollution. The San Francisco Bay–Delta system has largely been immune to severe or acute HAB events, but there is both a potential and realized threat which has been underestimated and under-reported, in part because of the lack of coordinated sampling and data reporting. There is also increasing evidence that HABs must be considered in the context of a freshwater-to-marine continuum, and that the physical and political boundaries separating components of the Bay–Delta system are porous barriers to HABs and their toxins. Much remains to be learned about the ecology and physiology of HAB organisms in this system, but five primary environmental drivers can be identified: temperature, salinity, irradiance,...
      PubDate: Wed, 1 Feb 2023 00:00:00 +0000
  • Ecosystem Services and Disservices of Bay-Delta Primary Producers: How
           Plants and Algae Affect Ecosystems and Respond to Management of the
           Estuary and Its Watershed

    • Authors: Larsen; Laurel G. , Bashevkin, Samuel M. , Christman, Mairgareth A. , Conrad, J. Louise , Dahm, Clifford A. , Thompson, Janet
      Abstract: The Sacramento–San Joaquin Delta (Delta) is a case-study of the Anthropocene “great accelerations,” with exponentially increasing temperatures and sea level over time, leading to rapid change in other ecosystem components. In nearly all these interconnected changes and across scales, primary producers play a major role, with diverse effects that mitigate or exacerbate the rapid change induced by climate or other human-driven perturbations. Through this anthropocentric lens, primary producers can be viewed as performing numerous ecosystem services—which ultimately benefit humans—as well as ecosystem disservices, which negatively affect human communities. For example, through carbon sequestration, wetlands can perform ecosystem services of mitigating warming at a global scale and combating relative sea-level rise at a local scale, while generating food that supports regional food webs and fisheries. On the other hand, invasive aquatic vegetation (IAV) can trap sediment before it...
      PubDate: Wed, 25 Jan 2023 00:00:00 +000
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Heriot-Watt University
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