Tritia A Matsuda
Tritia Matsuda is a biologist at the Western Ecological Research Center.
Science and Products
Range-wide persistence of the endangered arroyo toad (Anaxyrus californicus) for 20+ years following a prolonged drought
Prolonged drought due to climate change has negatively impacted amphibians in southern California, U.S.A. Due to the severity and length of the current drought, agencies and researchers had growing concern for the persistence of the arroyo toad (Anaxyrus californicus), an endangered endemic amphibian in this region. Range-wide surveys for this species had not been conducted for at least...
Authors
Cynthia Joan Hitchcock, Elizabeth Gallegos, Adam R. Backlin, Russell Barabe, Peter H. Bloom, Kimberly Boss, Cheryl S. Brehme, Chris W. Brown, Denise Clark, Elizabeth R. Clark, Kevin Cooper, Julie Donnell, Edward L. Ervin, Peter Famolaro, Kim M. Guilliam, Jaquelyn Hancock, Nicholas Hess, Steven Howard, Valerie Hubbartt, Patrick Lieske, Robert E. Lovich, Tritia A. Matsuda, Katherin Meyer-Wilkins, Kamarul Muri, Barry Nerhus, Jeffrey A. Nordland, Brock Ortega, Robert H. Packard, Ruben Ramirez, Sam C. IV Stewart, Samuel Sweet, Manna L. Warburton, Jeffrey Wells, Ryan Winkleman, Kirsten Winter, Brian Zitt, Robert N. Fisher
Impacts of a non-indigenous ecosystem engineer, the American beaver (Castor canadensis), in a biodiversity hotspot
Non-native species having high per capita impacts in invaded communities are those that modulate resource availability and alter disturbance regimes in ways that are biologically incompatible with the native biota. In areas where it has been introduced by humans, American beaver (Castor canadensis) is an iconic example of such species due to its capacity to alter trophic dynamics of...
Authors
Jonathan Q. Richmond, Camm C. Swift, Thomas A. Wake, Cheryl S. Brehme, Kristine L. Preston, Barbara Kus, Edward L. Ervin, Scott Tremor, Tritia A. Matsuda, Robert N. Fisher
Responses of migratory amphibians to barrier fencing inform the spacing of road underpasses: A case study with California tiger salamanders (Ambystoma californiense) in Stanford, CA, USA
Migratory amphibians are at high risk of negative impacts when roads intersect their upland and breeding habitats. Road mortality can reduce population abundance, survivorship, breeding, recruitment, and probability of long-term persistence. Increasingly, environmental planners recommend installation of under-road tunnels with barrier fencing to reduce mortality and direct amphibians...
Authors
Cheryl S. Brehme, Jeff A. Tracey, Brittany Ewing, Michael T. Hobbs, Alan E. Launer, Tritia A. Matsuda, Esther M. Cole Adelsheim, Robert N. Fisher
Predictability of invasive Argentine ant distribution across Mediterranean ecoregions of southern California
The invasiveness of nonnative taxa can vary across a landscape due to environmental gradients, suggesting that location-dependent management strategies may be more effective at reducing spread compared to a “one size fits all” approach across the entire introduced range. Using bait stations placed along linear transects within habitat preserves, we tested for effects of ecoregion...
Authors
Jonathan Q. Richmond, Tritia A. Matsuda, Cheryl S. Brehme, Emily Perkins, Robert N. Fisher
Research to inform Caltrans best management practices for reptile and amphibian road crossings
In October of 2014, the U.S. Geological Survey (USGS) began a 5-year project to conduct research to inform Best Management Practices (BMPs) for amphibian and reptile crossing and barrier systems in California. To inform future conservation and transportation planning, this project involved identification of species at highest risk of negative road impacts, creation of geodatabase and...
Authors
Cheryl S. Brehme, Robert N. Fisher, Tom E. S. Langton, Anthony P. Clevenger, Esther Adelsheim, Stephanie Barnes, Tristan Edgarian, Brittany Ewing, Stacie A. Hathaway, Michael T. Hobbs, Jennifer Kingston, A. Launer, Tritia A. Matsuda, Jeremy B. Sebes, C. Vaughn, Elise Watson
Track tube construction and field protocol for small mammal surveys with emphasis on the endangered Pacific pocket mouse (Perognathus longimembris pacificus)
Track tubes are used to identify small animals by their tracks. Animals that are small enough to fit into the tubes walk over ink pads and onto cardstock paper to obtain bait within the tube, leaving their footprints. The tracking tubes described in this document are designed to be set on the ground with free access and exit at either end with additional design components for stability...
Authors
Cheryl S. Brehme, Tritia A. Matsuda, Devin T. Adsit-Morris, Denise Clark, Jeremy B. Sebes, Melanie Anne T. Burlaza, Robert N. Fisher
Effects of large-scale wildfire on ground foraging ants (Hymenoptera: Formicidae) in southern California
We investigated the effect of broad-scale wildfire on ground foraging ants within southern California. In October and November of 2003, two wildfires burned large portions of the wildlands within San Diego County. Between January 2005 and September 2006, we surveyed 63 plots across four sites to measure the effect of the fires on the ant assemblages present in four vegetation types: 1)...
Authors
Tritia A. Matsuda, Greta M. Turschak, Cheryl S. Brehme, Carlton J. Rochester, Milan J. Mitrovich, Robert N. Fisher
Ants as a measure of effectiveness of habitat conservation planning in southern California
In the United States multispecies habitat conservation plans were meant to be the solution to conflicts between economic development and protection of biological diversity. Although now widely applied, questions exist concerning the scientific credibility of the conservation planning process and effectiveness of the plans. We used ants to assess performance of one of the first regional...
Authors
Milan J. Mitrovich, Tritia A. Matsuda, Krista H. Pease, Robert N. Fisher
Science and Products
Range-wide persistence of the endangered arroyo toad (Anaxyrus californicus) for 20+ years following a prolonged drought
Prolonged drought due to climate change has negatively impacted amphibians in southern California, U.S.A. Due to the severity and length of the current drought, agencies and researchers had growing concern for the persistence of the arroyo toad (Anaxyrus californicus), an endangered endemic amphibian in this region. Range-wide surveys for this species had not been conducted for at least...
Authors
Cynthia Joan Hitchcock, Elizabeth Gallegos, Adam R. Backlin, Russell Barabe, Peter H. Bloom, Kimberly Boss, Cheryl S. Brehme, Chris W. Brown, Denise Clark, Elizabeth R. Clark, Kevin Cooper, Julie Donnell, Edward L. Ervin, Peter Famolaro, Kim M. Guilliam, Jaquelyn Hancock, Nicholas Hess, Steven Howard, Valerie Hubbartt, Patrick Lieske, Robert E. Lovich, Tritia A. Matsuda, Katherin Meyer-Wilkins, Kamarul Muri, Barry Nerhus, Jeffrey A. Nordland, Brock Ortega, Robert H. Packard, Ruben Ramirez, Sam C. IV Stewart, Samuel Sweet, Manna L. Warburton, Jeffrey Wells, Ryan Winkleman, Kirsten Winter, Brian Zitt, Robert N. Fisher
Impacts of a non-indigenous ecosystem engineer, the American beaver (Castor canadensis), in a biodiversity hotspot
Non-native species having high per capita impacts in invaded communities are those that modulate resource availability and alter disturbance regimes in ways that are biologically incompatible with the native biota. In areas where it has been introduced by humans, American beaver (Castor canadensis) is an iconic example of such species due to its capacity to alter trophic dynamics of...
Authors
Jonathan Q. Richmond, Camm C. Swift, Thomas A. Wake, Cheryl S. Brehme, Kristine L. Preston, Barbara Kus, Edward L. Ervin, Scott Tremor, Tritia A. Matsuda, Robert N. Fisher
Responses of migratory amphibians to barrier fencing inform the spacing of road underpasses: A case study with California tiger salamanders (Ambystoma californiense) in Stanford, CA, USA
Migratory amphibians are at high risk of negative impacts when roads intersect their upland and breeding habitats. Road mortality can reduce population abundance, survivorship, breeding, recruitment, and probability of long-term persistence. Increasingly, environmental planners recommend installation of under-road tunnels with barrier fencing to reduce mortality and direct amphibians...
Authors
Cheryl S. Brehme, Jeff A. Tracey, Brittany Ewing, Michael T. Hobbs, Alan E. Launer, Tritia A. Matsuda, Esther M. Cole Adelsheim, Robert N. Fisher
Predictability of invasive Argentine ant distribution across Mediterranean ecoregions of southern California
The invasiveness of nonnative taxa can vary across a landscape due to environmental gradients, suggesting that location-dependent management strategies may be more effective at reducing spread compared to a “one size fits all” approach across the entire introduced range. Using bait stations placed along linear transects within habitat preserves, we tested for effects of ecoregion...
Authors
Jonathan Q. Richmond, Tritia A. Matsuda, Cheryl S. Brehme, Emily Perkins, Robert N. Fisher
Research to inform Caltrans best management practices for reptile and amphibian road crossings
In October of 2014, the U.S. Geological Survey (USGS) began a 5-year project to conduct research to inform Best Management Practices (BMPs) for amphibian and reptile crossing and barrier systems in California. To inform future conservation and transportation planning, this project involved identification of species at highest risk of negative road impacts, creation of geodatabase and...
Authors
Cheryl S. Brehme, Robert N. Fisher, Tom E. S. Langton, Anthony P. Clevenger, Esther Adelsheim, Stephanie Barnes, Tristan Edgarian, Brittany Ewing, Stacie A. Hathaway, Michael T. Hobbs, Jennifer Kingston, A. Launer, Tritia A. Matsuda, Jeremy B. Sebes, C. Vaughn, Elise Watson
Track tube construction and field protocol for small mammal surveys with emphasis on the endangered Pacific pocket mouse (Perognathus longimembris pacificus)
Track tubes are used to identify small animals by their tracks. Animals that are small enough to fit into the tubes walk over ink pads and onto cardstock paper to obtain bait within the tube, leaving their footprints. The tracking tubes described in this document are designed to be set on the ground with free access and exit at either end with additional design components for stability...
Authors
Cheryl S. Brehme, Tritia A. Matsuda, Devin T. Adsit-Morris, Denise Clark, Jeremy B. Sebes, Melanie Anne T. Burlaza, Robert N. Fisher
Effects of large-scale wildfire on ground foraging ants (Hymenoptera: Formicidae) in southern California
We investigated the effect of broad-scale wildfire on ground foraging ants within southern California. In October and November of 2003, two wildfires burned large portions of the wildlands within San Diego County. Between January 2005 and September 2006, we surveyed 63 plots across four sites to measure the effect of the fires on the ant assemblages present in four vegetation types: 1)...
Authors
Tritia A. Matsuda, Greta M. Turschak, Cheryl S. Brehme, Carlton J. Rochester, Milan J. Mitrovich, Robert N. Fisher
Ants as a measure of effectiveness of habitat conservation planning in southern California
In the United States multispecies habitat conservation plans were meant to be the solution to conflicts between economic development and protection of biological diversity. Although now widely applied, questions exist concerning the scientific credibility of the conservation planning process and effectiveness of the plans. We used ants to assess performance of one of the first regional...
Authors
Milan J. Mitrovich, Tritia A. Matsuda, Krista H. Pease, Robert N. Fisher