A5001134191- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Biology and Environmental Chemistry
- Fish biology, ecology, and behavior
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Coral and Marine Ecosystems Studies
- Hydrology and Watershed Management Studies
- Environmental Toxicology and Ecotoxicology
- Coastal wetland ecosystem dynamics
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Evolution and Genetic Dynamics
- Aquaculture Nutrition and Growth
- Coastal and Marine Management
- Cephalopods and Marine Biology
- Arctic and Russian Policy Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Echinoderm biology and ecology
- Data Analysis with R
- Wildlife-Road Interactions and Conservation
- Animal Ecology and Behavior Studies
- Crustacean biology and ecology
Delta Air Lines (United States)
2020-2024
California Department of Fish and Wildlife
2024
Marine Stewardship Council
2022
Delta (Denmark)
2022
University of California, Davis
2019-2020
Bay Institute
2019
Tufts University
2015-2017
Abstract Identification of the key biotic and abiotic drivers within food webs is important for understanding species abundance changes in ecosystems, particularly across ecotones where there may be strong variation interaction strengths. Using structural equation models (SEMs) four decades integrated data from San Francisco Estuary, we investigated relative effects top‐down, bottom‐up, environmental on multiple trophic levels pelagic web along an estuarine salinity gradient at both annual...
The San Francisco Estuary (estuary) and the Sacramento–San Joaquin Delta (the Delta) in California face significant challenges managing water resources during extended droughts. Zooplankton are a vital trophic link between phytoplankton producers higher-level consumers such as predatory zooplankton fish. However, there is still much to be learned about what drives abundance how they respond drastic changes environmental conditions, We found that drought years distribution varied for examined...
Abstract Dispersal of benthic species in the sea is mediated primarily through small, vulnerable larvae that must survive minutes to months as members plankton community while being transported by strong, dynamic currents. As climate change alters ocean conditions, dispersal these will be affected, with pervasive ecological and evolutionary consequences. We review impacts oceanic changes on larval transport, physiology, behavior. then discuss implications for population connectivity...
Multi-year droughts are ever-present and transformational features of California’s Mediterranean climate can fundamentally affect the water quality ecosystem responses San Francisco Estuary (estuary) Sacramento-San Joaquin Delta (Delta). This study assessed data collected by long-term monitoring programs over past 46 years (1975-2021) to evaluate how in estuary changes during multi-year droughts. Data were aggregated region (South-Central Delta, North Confluence, Suisun Bay, Marsh) season,...
Abstract Temperature is a key controlling variable from subcellular to ecosystem scales. Thus, climatic warming expected have broad impacts, especially in economically and ecologically valuable systems such as estuaries. The heavily managed upper San Francisco Estuary supplies water millions of people home fish species high conservation, commercial, recreational interest. Despite long monitoring record (> 50 yr), we do not yet know how temperatures already changed or trends vary spatially...
Rising temperature is one direct consequence of climate change, and a key controlling variable on biological processes from molecular to ecosystem scales. While rising average the most discussed aspects extreme events such as heatwaves are also expected increase in duration, intensity, frequency. These changes will bring about effects that threaten integrity upper San Francisco Estuary (estuary) ecosystem, services they provide humans, health humans reside region. In estuary, warmer...
Complex life cycles, in which discrete stages of the same organism differ form or function and often occupy different ecological niches, are common nature. Because share genome, selective effects on one stage may have cascading consequences through entire cycle. Theoretical empirical studies not yet generated clear predictions about how cycle complexity will influence patterns adaptation response to rapidly changing environments tested theoretical for fitness trade-offs (or lack thereof)...
Abstract Water temperature and inflow are key environmental drivers in aquatic systems that linked through a causal web of factors including climate, weather, water management, their downstream linkages. However, we do not yet fully understand the relationship between temperature, especially complex managed such as estuaries. The San Francisco Estuary is center critical supply infrastructure home to deteriorating ecosystem with several declining fish species at warm edge thermal range. We...
Ecosystem management and governance of cross-scale dependent systems require integrating knowledge about ecological connectivity in its multiple forms scales. Although scientists, managers, policymakers are increasingly recognizing the importance connectivity, governmental organizations may not be currently equipped to manage ecosystems with strong cross-boundary dependencies. Managing different aspects requires building social increase flow information, as well capacity coordinate planning,...
We present the longest available dataset (by 15 years) of estuarine zooplankton abundance worldwide. Zooplankton have been monitored throughout upper San Francisco Estuary from 1972 -present due to its status as a central hub California water delivery and home commercially important endangered fishes. integrated data five monitoring programs, including over 300 locations, three size-classes targeted with different gears, 80,000 samples, two billion sampled organisms. Over duration this...
Abstract Climate change may cause organisms to seek thermal refuge from rising temperatures, either by shifting their ranges or seeking microrefugia within existing ranges. We evaluate the potential for stratification provide two fish species in San Francisco Estuary (Estuary): Chinook Salmon ( Oncorhynchus tshawytscha Walbaum, 1792) and Delta Smelt Hypomesus transpacificus McAllister, 1963). compiled water temperature data multiple monitoring programs spatial, daily, hourly, intra-annual,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 528:235-243 (2015) - DOI: https://doi.org/10.3354/meps11284 Desiccation tolerance and lifting behavior in Crepidula fornicata (Gastropoda) Casey M. Diederich1,3, Samuel Bashevkin1,4, Oscar R. Chaparro2, Jan A. Pechenik1,* 1Biology Department, Tufts University, Medford, MA 02155, USA 2Instituto de Ciencias...
Fish monitoring gears rarely capture all available fish, an inherent bias in programs referred to as catchability. Catchability is a source of that can be affected by numerous aspects gear deployment (e.g., speed, mesh size, and avoidance behavior). Thus, care must taken when multiple surveys—especially those using different sampling methods—are combined answer spatio-temporal questions about population community dynamics. We assessed relative catchability differences among four long-term...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 542:123-140 (2016) - DOI: https://doi.org/10.3354/meps11563 Prior exposure low salinity affects vertical distribution of Pisaster ochraceus (Echinodermata: Asteroidea) larvae in haloclines Samuel M. Bashevkin1,5, Daniel Lee2, Paul Driver2, Emily Carrington3,4, Sophie B. George2,* 1Tufts University, Medford,...
Zooplankton provide critical food for threatened and endangered fish species in the San Francisco Estuary (estuary). Reduced supply has been implicated Pelagic Organism Decline of early 2000s, further changes zooplankton abundance, seasonality, distribution may continue to threaten declining fishes. While we have a wealth monitoring data, know little about abundance trends many estuary species. To fill these gaps, reviewed past research then examined seasonality from 1972 present three key...
Abstract Plankton live under the countervailing selective pressures of predation and ultraviolet radiation (UVR). In lakes, zooplankton are transparent reducing visibility to predatory fishes but pigmented in absence fishes, hypothetically UVR damage. sea, planktivorous widespread, so plankton typically ascend productive surface waters at night forage descend during day reduce predators. However, larvae some species face unique constraint traveling currents daytime migrations between adult...
Abstract Morphological defences of plankton can include armour, spines and coloration. Spines defend from gape‐limited fish predators, while pigmentation increases visibility to fishes but defends ultraviolet radiation (UVR). Planktonic crab larvae (zoeae) exhibit inter‐ intraspecific variability in the lengths defensive spines, extent body size. The determinants this relationships among these traits are largely unknown. Larvae may employ generalized against dual threats UVR predation or...
[Abstracts are not associated with Essays. - the SFEWS Editors]
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 across scales, primary producers play major role, diverse effects that mitigate or exacerbate induced by climate human-driven perturbations. Through this anthropocentric lens, can be viewed as performing numerous services—which...
Desiccation is an important limiting factor in the intertidal zone. Generally decreasing seaward, desiccation stress can also be alleviated wet microhabitats. Juvenile snails are generally more susceptible to than adults, and, for some species, juveniles must therefore hide microhabitats survive emersion. The transition from hiding safe being able fully exposed duration of low tide not well documented. In this study, we investigated influence size on tolerance calyptraeid gastropod...
Most zooplankton are almost entirely transparent, but some species of crab larvae can be covered by black, brown, red, green, or blue pigments. To determine whether these pigments protect from ultraviolet radiation (UVR), we compared the UVR susceptibility 12 Caribbean with differing pigmentations. Lightly pigmented died much more quickly than darkly species, especially on sunnier days. Our comparative analysis demonstrates that damaging UVR, improving our understanding selective forces...
Temperature is a key controlling variable from subcellular to ecosystem scales. Thus, climatic warming expected have broad impacts, especially in economically and ecologically valuable systems such as estuaries. The heavily managed upper San Francisco Estuary supplies water millions of people home fish species high conservation, commercial, recreational interest. Despite long monitoring record (> 50 years), we do not yet know how temperatures already changed or trends vary spatially...