EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/23/2018 | 10:00 AM - 10:15 AM | EXTREME DROUGHT DRIVES RANGE CONTRACTION OF SALMONID FISHES | 410 A
EXTREME DROUGHT DRIVES RANGE CONTRACTION OF SALMONID FISHES
Droughts are a complex meteorological phenomenon, with impacts that are not purely influenced by an overall lack of rain, but also by the spatial and temporal patterns of rainfall. California’s recent multi-year drought, potentially the most severe encountered in the past 500 years in terms of total rainfall, was also unusual in the timing of its large rainfall events. Using long-term flow records, we demonstrate that during the 2013-14 water year, the timing of large flows was shifted late in the winter. This created a mismatch between the occurrence of elevated flows, required to allow adult salmonids access to small tributary breeding habitats, and the phenology of breeding salmonid fishes. Using data from multiple monitoring efforts in central and northern California, we show that the hydro-phenological mismatch eliminated access to breeding and rearing habitat for three species of salmonid fishes (Oncorhynchus kisutch, O. mykiss, O. tshawtyscha) based on absence of adults or juveniles from “perennial” salmonid habitats. Our results emphasize that magnitude and timing of winter storms can dramatically influence the distributions of migratory salmon and trout in California near their southern range limits, shifting their overall distributions down-river.
- Disturbance
- Distribution
- Conservation
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Stephanie Carlson
(), Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, U.S., smcarlson@berkeley.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Suzanne Kelson
(), University of Nevada, Reno, skelson@unr.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Cleo Woelfle-Erskine
(), University of Washington, cleowe@uw.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Mariska Obedzinski
(), California Sea Grant, mobedzinski@ucsd.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Allan Renger
(), California Department of Fish and Wildlife, allan.renger@wildlife.ca.gov;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Sally Thompson
(), University of California, Berkeley, sally.thompson@berkeley.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Mary Power
(), University of California, Berkeley, mepower@berkeley.edu;
Dr. Mary E. Power is Professor in the Department of Integrative Biology at the University of California, Berkeley. She was awarded an honorary doctorate by Umea University, the Kempe Medal for distinguished ecologists, and the Hutchinson Award from the American Society of Limnologists and Oceanographers. She is a member of the California Academy of Science, the American Academy of Arts and Sciences, and National Academy of Sciences, USA. She has served on the Editorial Board of PNAS (2014 to present) and Science (2006-2009). Mary also served as President of the American Society of Naturalists, and of the Ecological Society of America. Since 1988, she has been the Faculty Director of the Angelo Coast Range Reserve, (one of the UC Natural Reserve System sites, a 3500 ha reserve protected for university teaching and research). She has studied food webs in temperate and tropical rivers, as well as linkages of rivers, watersheds and near-shore environments. Focal organisms include cyanobacteria, algae, invertebrates, fish, estuarine crustaceans and terrestrial grasshoppers, spiders, lizards, birds and bats. By studying how key ecological interactions depend on landscape and temporal contexts, her group hopes to learn how river-structured ecosystems will respond to changes over space and time in climate, land use, and biota. Her group also collaborates closely with Earth and atmospheric scientists in site-based research to investigate linkages among riverine, upland, and near-shore ocean ecosystems.
ASHA DISCLOSURE:
Financial -
Nonfinancial -