2026 IEP Workshop Poster Exhibits

Below are some of the posters and abstracts from the 2026 IEP Annual Workshop that authors have made available for viewing. If an author did not share their poster for exhibit, you can contact them directly using their contact information in the Abstract Booklet (PDF).

Best Poster Presentation Winners

  • Pachia Lee (DWR) [Available - see category New Technologies]
  • Lalayna Hablutzel (CDFW) [Available - see category Delta or Longfin Smelt]
  • Andres Mendoza (USFWS) [Not Available - contact author directly]

How to Find an Author or Poster

  • You can use the search box to search by an author's name or subject matter.
  • You can select one of the listed categories and scroll by author in the list at the right.
  • You can scroll through the list of posters. Click on one. To open the poster (larger screen) and see the abstract, click on the text (white font) at the top of the poster image. Use the scroll bar at the bottom of the page to move left and right across the screen.

Search

Categories

Gabriela Garcia -- Echoes in the Estuary: Fourteen Years of White Sturgeon Movement

published on APRIL 24, 2026
0
Like 0
APRIL 24, 2026

White Sturgeon (Acipenser transmontanus) are large, slow-growing, and late-maturing fish that move between river spawning grounds and downstream feeding areas. The southernmost population of the species, found in the Sacramento-San Joaquin system (i.e., Lower Sacramento River, San Joaquin River, and San Francisco Estuary), appears to be in decline. In November 2023, this population was petitioned for listing under both the federal Endangered Species Act (ESA) and the California Endangered Species Act (CESA). To better understand how White Sturgeon use the system, we analyzed 13 years (2013–2025) of acoustic detections from fish collected and tagged in the San Joaquin River (n = 107). Data from the U.S. Fish and Wildlife Service (Lodi) were combined with detections from the Pacific Aquatic Telemetry Hub (PATH) across the Sacramento–San Joaquin system. Over the study period, 50 tagged White Sturgeon (46%) were detected only in the San Joaquin River, 49 used both the Lower Sacramento and San Joaquin rivers, three were found only in the Lower Sacramento River (aside from the tagging year), one that was not detected above the confluence of the Sacramento-San Joaquin, and four were never detected after tagging. Thirteen fish (12%) moved below Alfred Zampa Memorial Bridge, 37 (34%) were observed in both the Sacramento and San Joaquin rivers within the same water-year, and 42 (40%) were detected in the Southern Delta. Four individuals were also detected in the Calaveras River, roughly 12 miles upstream of its confluence with the San Joaquin River. We explore these patterns further using age, sex, Delta inflow and outflow, and other environmental conditions to better understand the factors influencing these movements. Our findings help clarify how and when White Sturgeon use different parts of the Sacramento-San Joaquin system and provide useful information for future management and recovery efforts.

Authors:
• Gabriela Garcia*†, U.S. Fish and Wildlife Service, gabriela_garcia@fws.gov
• Taylor Senegal, U.S. Fish and Wildlife Service

*Presenting author, †Early Career Award candidate

Categories:Other Fish

Showing 0 Comment