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IEP News
Breaking News!
Call for IEP Newsletter articles!
Submission deadline is June 15, 2024.
Send submissions to
iep@wildlife.ca.gov
.
The 2024 IEP Workshop is
April 23-25, 2024
and will be held in the auditorium of the California Natural Resources Agency Headquarters building. A remote Data Training Course will be held April 18. Registration to attend the workshop in-person closes
April 8
. Remote registration will remain open till the end of the workshop. Visit the
IEP Annual Workshop
web page for more information.
The Sacramento-San Joaquin Green and White Sturgeon: A Comprehensive Review 2023 (pdf)
paper by CA Sea Grant Fellow (2023) Sam Pyros is now available on the
IEP Sturgeon Project Work Team page
.
The project leads for the Summer Townet Survey have published the Summer Townet fish catch and environmental data in the Environmental Data Initiative (EDI) Data Repository. This should also soon be discoverable in DataONE and Google Dataset Search. The citation for the data is as follows:
Malinich, T.D., J.R. White, S.B. Slater, S.D. Breining-Aday, and N.K. Ugbah. 2023.
Interagency Ecological Program: Summer Townet Survey for Young Pelagic Fishes in the San Francisco Estuary ver 1
. Environmental Data Initiative.
Featured Survey
Delta Juvenile Fish Monitoring Program
As the weather improves and warms through the spring, many of our native and non-native fish become more active, with many species growing into the juvenile life stage and showing much broader ranges of movement within the San Francisco Estuary. The
Delta Juvenile Fish Monitoring Program
incorporates several survey techniques and analytical approaches to develop an appreciation for the abundance of these fishes and how they move through our Delta and Estuary. Many of our most common and important commercial species of fishes are found using this gear, and their populations later in the year frequently show strong dependence to how well these juvenile fish fare during the months before our aquatic habitats become warm and lower-flowing.
Featured Publications
The following research articles are now available in a Special Issue of the
San Francisco Estuary and Watershed Sciences
journal, and together comprise an indispensable output from the IEP Drought Synthesis Team lead by Dr. Rosemary Hartman. These articles are timely, informative, readable, and form the basis for understanding how the Estuary is likely to change as we move forward into the future with a changing global climate.
The Anatomy of a Drought in the Upper San Francisco Estuary: Water Quality and Lower-Trophic Responses to Multi-Year Droughts Over a Long-Term Record (1975–2021)
David H. Bosworth, Samuel M. Bashevkin, Keith Bouma–Gregson, Rosemary Hartman, Elizabeth B. Stumpner
Delta Blue(green)s: The Effects of Drought and Drought-Management Actions on Microcystis in the Sacramento–San Joaquin Delta
Keith Bouma–Gregson, David H. Bosworth, Theodore M. Flynn, Amanda Maguire, Jenna Rinde, Rosemary Hartman
Years of Drought and Salt: Decreasing Flows Determine the Distribution of Zooplankton Resources in the San Francisco Estuary
Arthur Barros, Rosemary Hartman, Samuel M. Bashevkin, Christina E. Burdi
Amazing Graze: Shifts in Jellyfish and Clam Distributions During Dry Years in the San Francisco Estuary
Rosemary Hartman, Laura Twardochleb, Christina E. Burdi, Elizabeth H. Wells
Dry Me a River: Ecological Effects of Drought in the Upper San Francisco Estuary
Rosemary Hartman, Elizabeth B. Stumpner, David H. Bosworth, Amanda Maguire, Christina E. Burdi, Interagency Ecological Program Drought Synthesis Team
Dr. Flora Cordoleani and 8 colleagues have published an important foundational study describing the importance of restoring a mosaic of aquatic habitats across the landscape to support native Central Valley Chinook Salmon populations. Their article, found in a recent edition of
Ecosphere
describes “the importance of restoring a connected mosaic of aquatic habitats across modified landscapes, such as cold water refugia and floodplains, to preserve multiple (across-population) life history pathways for increasing salmon stock complex stability and abundance. These landscape-scale process-based habitat restoration efforts are likely to be crucial for the successful long-term recovery of vulnerable species in a rapidly changing climate.”
In an innovative and revealing article titled "Clams on Stilts: a phytoplankton bioassay investigating effects of wastewater effluent amendments and Corbicula fluminea grazing” by Mussen and others, published in
Aquatic Biology
, the authors address some fundamental interactions within the shallow-water habitats occupied by these benthic bivalves. As the title suggests, clam grazing effects may be greater than expected. From the abstract they state: “elevated grazing pressure from the non-native freshwater clam Corbicula fluminea and localized depletions of dissolved inorganic nitrogen may limit phytoplankton biomass accumulation in restored habitats.” Furthermore, the authors “recommend that future wetland restoration projects promoting increased phytoplankton biomass assess clam settlement likelihood as well as nutrient availability.”
Featured Dataset Publications
Synthesized fish, benthic invertebrate, and water quality dataset used for analysis in: Rogers, T., S. Bashevkin, C. Burdi, D. Colombano, P. Dudley, B. Mahardja, L. Mitchell, S. Perry, and P. Saffarinia. 2022. Evaluating top-down, bottom-up, and environmental drivers of pelagic food web dynamics along an estuarine gradient.
Ecology
. Dataset citation as follows:
Mitchell, L., S.E. Perry, S.M. Bashevkin, C.E. Burdi, D.D. Colombano, P.N. Dudley, B. Mahardja, R.L. Tanya, and P. Saffarinia. 2023. Data from
"Evaluating top-down, bottom-up, and environmental drivers of pelagic food web dynamics along an estuarine gradient" ver 3. Environmental Data Initiative
. https://doi.org/10.6073/pasta/8cb1e3d1312f2034e2345f62eb455403 (Accessed 2024-03-06).
Check out the
IEP Calendar
for upcoming Project Work Team, Stakeholder Group meetings and other IEP related events!
April 23-25 IEP Annual Workshop (in-person + remote)
Other Events or News
San Francisco Estuary Partnership
(SFEP) launches
Estuary Youth Council
In 2023, the SFEP kicked off a new youth-centered program called the
Estuary Youth Council
. This is a pilot leadership development program developed in collaboration with Mycelium Youth Network, Nuestra Casa, and Restore the Delta. The Estuary Youth Council will give young people, especially youth from underserved communities, opportunities to advise environmental managers with youth-centered perspectives, priorities, and concerns in the restoration and adaptation of the San Francisco Estuary as well as offer professional development.
Got something new to share? Contact us at
iep@wildlife.ca.gov
.
Frontiers for Young Minds:
Where the river meets the ocean - Stories from San Francisco Estuary
IEP Blogs -
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The View from Here
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Views from the Water
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Science Stories: Adventures in Bay-Delta Data
- A blog by Rosemary Hartman (DWR), one of IEP's Synthesis Team members
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