Holden Laboratory


Tuesday, April 6, 2021
New preprint from Sloan Foundation-funded project to UWM and colleagues (COSES): https://www.preprints.org/manuscript/202104.0167/v1
Wednesday, March 31, 2021
Congrats to lead authors Gregory Pierce (UCLA/ Luskin) and Kyra Gmoser-Daskalis, and to all associated MRPI researchers (https://doi.org/10.1080/08941920.2021.1900963)
Thursday, December 17, 2020
Congratulations to Drs Ariani Wartenberg and Van Butsic (UCB) and all TRDRP-NRS Pilot Project (Tobacco and Cannabis Chemicals in the Environment) co-authors upon the acceptance of  "Cannabis and the environment: What science tells us and what we still...
Monday, December 14, 2020
Congratulations to Emily Parker (first author), Stanley Grant (senior author), and a roster of additional MRPI co-authors for the acceptance in Water Resources Research of "Predicting Solute Transport through Green Stormwater Infrastructure with Unsteady...
Tuesday, November 24, 2020
Our senior staff scientist, Laurie Van De Werfhorst, is recognized for her milestone of 20 years employment in the UC system. The milestone celebration for USCB staff is here. Congratulations, Laurie, and thank you for your dedication to the UC and to...
Monday, November 16, 2020
Our proposal to research environmental aspects of legal cannabis cultivation was selected for funding by the CA Bureau of Cannabis Control (BCC), as per this announcement. The project is a collaboration between UCSB, San Diego State University, (SDSU),...
Thursday, November 12, 2020
Congratulations to Marina Feraud, as her paper entitled "Evaluating the relationships between specific drainage area characteristics and soil metal concentrations in long-established bioswales receiving suburban stormwater" has been accepted for...
Friday, November 6, 2020
Congratulations to colleagues at UCLA Greg Pierce and Kyra Gmoser-Daskalakis who led our five-UC campus MRPI project, "Fighting Drought with Stormwater", in a recent publication in Environmental Management: "University Stormwater Management within Urban...
Monday, October 26, 2020
https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/wastewater-surveillance.html Trish served within the panel of experts who, via the Sloan Foundation-funded COSES project (to U. Wisc. and others), provided guidance to the CDC on wastewater...
Monday, September 28, 2020
Black in Microbiology is a webinar series this week, in association with the American Society for Microbiology. Click on this link at the beginning of this post, to sign up.
Wednesday, September 23, 2020
Wastewater is being surveilled for SARS-CoV-2, but how should the information make a difference? How can communication occur to best assist public health? Trish is participating as a research expert in CoSeS: a Sloan Foundation-funded project led by U...
Sunday, August 9, 2020
Congratulations to Professor Mortimer (Monika) and co-author Alyssa Winchell for the acceptance of the manuscript entitled "Evaluation of frameworks proposed as protective of antimicrobial resistance propagation in the environment" for publication in the...
Wednesday, July 15, 2020
We congratulate Timnit as she wins, for the 2019-20 Academic Year at UCSB, a Graduate Student Association (GSA) "Excellence in Teaching Award" for her performance as a Teaching Assistant. Well done, Timnit, and accolades for your commitment to, and job...
Thursday, June 4, 2020
Congratulations to doctoral student Liviu Iancu, as he wins a Summer Research Fellowship from the Earth Research Institute at UCSB. Well done, Liviu!
Friday, May 29, 2020
Many congratulations to Timnit as she wins a Schmidt Family Foundation Environmental Solutions Research Grant, for academic year 2020-21. Well done, Timnit!
Wednesday, April 8, 2020
Funding was awarded from the UCSB Associated Students Coastal Fund for the project "Wastewater Surveillance of SARS-CoV-2 for the Santa Barbara Region". Sampling at the Santa Barbara (El Estero) and Montecito Sanitary District wastewater treatment plants...
Wednesday, March 18, 2020
Congratulations to Dong Li, first author, and co-authors, including Laurie C. Van De Werfhorst, Thomas Dunne, Naresh Devarajan, and Tania G. Ayala, as Water Research publishes "Surf zone microbiological water quality following emergency beach nourishment...
Friday, March 6, 2020
Congratulations to Timnit Kefela upon passing her oral qualifying exam, successfully defending her dissertation proposal, and advancing to candidacy in her doctoral (Ph.D.) program. Well done, Timnit!
Tuesday, November 26, 2019
Congratulations to Prof. Monika Mortimer and co-authors, including Dong Li and Ying Wang, upon acceptance by Small for publishing the manuscript entitled "Physical properties of carbon nanomaterials and nanoceria affect pathways important to the...
Sunday, September 1, 2019
Ying Wang successfully defended her dissertation and received her Ph.D.. She is currently a postdoctoral scholar at the Lawrence Berkeley Laboratory.
Monday, July 1, 2019
Dr. Monika Mortimer began her new position in July, 2019 as Associate Professor at the Institute of Environmental and Health Sciences, College of Quality and Safety Engineering, China Jiliang University, Hangzhou, Zhejiang, China.
Friday, May 31, 2019
The MRPI project entitled "Fighting Drought with Stormwater: from Research To Practice", joint between UCSB, UCLA, UCI, UCSD and UCR, held a day-long scientific results and planning retreat at the offices of SCCWRP.
Monday, November 19, 2018
Ying Wang won the best doctoral student poster presentation award at the SETAC North America Annual Meeting: https://www.setac.org/page/Awards2018
Wednesday, August 22, 2018
Amendments to our ongoing State research funding contract are approved, allowing the use of funds—originally for AB411-period research—for more detailed analysis of archived DNA from the 2018 wintertime Goleta Beach disposed mud, beach sands, and surf...
Wednesday, June 6, 2018
Agreement is reached with the State to amend an ongoing microbial source tracking research contract to allow additional study of archived DNA sampled from the disposed mud, surf zone, and beach sands at Goleta Beach following the Montecito debris flow in...
Friday, June 1, 2018
For her ES undergrad research and thesis entitled "'Dirt-y’ Microfibers: Effects of Microfibers on Soil Water Behavior”, intern Anne Trinh won a UCSB "2018 Environmental Studies Distinguished Senior Thesis Award". Congratulations, Anne!
Tuesday, May 8, 2018
  Following the January 9th, 2018 Montecito debris flow and the Santa Barbara County disposal of muds to Goleta Beach, the Holden Laboratory @ UCSB performed a wintertime study of the mud deposits and water quality at Goleta Beach, using funds provided...
Thursday, May 3, 2018
A manuscript entilted "Carbonaceous nanomaterials have higher effects on soybean rhizosphere prokaryotic communities during the reproductive growth phase than during vegetative growth" was accepted for publication in Environmental Science &...
Friday, March 9, 2018
Ying Wang advanced to candidacy, having passed her Ph.D. oral qualifying exam and defended her dissertation proposal. Well done, Ying!
Sunday, February 18, 2018
Congratulations to Monika Mortimer, Naresh Devarajan, and Dong Li for their research which was accepted for publication in ACS Nano: Multiwall carbon nanotubes induce more pronounced transcriptomic responses in Pseudomonas aeruginosa PG201 than graphene...
Friday, February 16, 2018
Congratulations to Ying Wang and to Timnit Kefela for their outstanding performances in the Bren School Ph.D. Student Symposium! Ying won for the Best Long Oral Presentation. Timnit won for the Best Poster Presentation.
Friday, February 9, 2018
Upon analyzing water (from 3 Goleta Beach surf zone locations) and sediments (deposited to Goleta Beach from the January 9th, 2018 Montecito debris flow) that were sampled for 7 days over the period January 18th through 26th, Holden Lab researchers found...
Saturday, February 3, 2018
Congratulations to Ying Wang, for winning a 2018 Graduate Student Award in Environmental Chemistry from the Division of Environmental Chemistry (ENVR) in the American Chemical Society (ACS).
Saturday, January 27, 2018
At the request of our UCSB campus, researchers in the Holden Lab are sampling the Goleta Beach surf zone, and sediments that are being disposed there, following the catastrophic January 9th Montecito debris flow which led to permitted disposal of...
Tuesday, January 23, 2018
Congratulations to Ying Wang, Monika Mortimer and collleague Chong Hyun (Paul) Chang on the publication of their work entitled: "Alginic acid-aided dispersion of carbon nanotubes, graphene, and boron nitride nanomaterials for microbial toxicity testing...
Friday, December 8, 2017
Congratulations to Marina Feraud, as she very well passed her oral Ph.D. qualifying exam today, and thus is advanced to candidacy.
Monday, March 20, 2017
The study was published in ES&T (Hartline et al, 2016), with Bess Ruff (MESM GP researcher), and the issue profiled here: http://www.cbs.com/shows/cbs_this_morning/video/SJU3S9_O_vMOGNpEkqRq6czY...
Monday, February 6, 2017
C&E News World Chemical Outlook (January 9th) issue feature story on synthetic microfibers including this study: http://cen.acs.org/magazine.html NPR's blog "The Salt" featured the study (February 6th): http://www.npr.org/sections/thesalt/2017/02/06/...
Tuesday, December 20, 2016
Congrats to all on ES&T accepting this article for publication: Title: "Spatial models of sewer pipe leakage predict the occurrence of wastewater indicators in shallow urban groundwater"Author(s): Roehrdanz, Patrick; Feraud, Marina; Lee, Do Gyun;...
Monday, December 12, 2016
See the UC MRPI program press and profile of PI Stanley Grant (UCI). The Holden Lab is excited to be the UCSB partner in this new project.  https://www.universityofcalifornia.edu/press-room/multicampus-research-p... and https://news.uci.edu/research/ucis...
Friday, September 30, 2016
A manuscript by the MESM group project, going into ES&T: Title: "Microfiber Masses Recovered From Conventional Machine Washing of New or Aged Garments"Author(s): Hartline, Niko; Bruce, Nicholas; Karba, Stephanie; Ruff, Elizabeth; Sonar, Shreya U;...
Monday, September 26, 2016
Great Lakes Today (http://news.wbfo.org/term/great-lakes-today) has a new radio spot on canine scent tracking, with Karen Reynolds of ECS LTD (http://www.ecsk9s.com/) and Trish, in the interview by Rebecca Thiele (WMUK, http://wmuk.org/people/rebecca-...
Thursday, September 22, 2016
Welcome to Timnit Kefela, new doctoral student in the Holden Lab!
Tuesday, September 20, 2016
Congratulations to Monika Mortimer, and colleagues, on the acceptance of the article "Separation of bacteria, protozoa and carbon nanotubes by density gradient centrifugation" for publication in the journal, Nanomaterials.
Sunday, September 18, 2016
Trish delivered the following short talks on Sunday, September 18th, at the SETAC Asia/Pacific 2016 meeting (http://www.setac-singapore2016.org/), held in Singapore (September 16 - 19): "Trophic Transfer of Engineered Nanomaterials from Bacteria to...
Thursday, September 15, 2016
Trish spoke about "Exposure and Hazard of Engineered Nanomaterials in Terrestrial Systems", for the Singapore Center for Environmental Life Sciences Engineering (SCELSE, http://www.scelse.sg/) seminar series on Thursday, September 15th.
Monday, September 12, 2016
Monika Mortimer attends the workshop "EMSL Integration 2016: Multiscale Ecosystems Analysis & Design" (https://www.emsl.pnl.gov/emslweb/emsl-integration-2016) at Pacific Northwest National Laboratory, September 12 -13, 2016. 
Monday, July 11, 2016
Congratulations to Monika, for the publication of her study "Bioaccumulation of multiwall carbon nanotubes in Tetrahymena thermophila by direct feeding or trophic transfer", with co-authors, in Environmental Science & Technology
Friday, July 8, 2016
Mitchell Maier joins the group, starting today, as an Assistant Specialist in quantitative research in water quality. Welcome, Mitchell!
Tuesday, June 28, 2016
During the last week of June, 2016, experts from the Alan Alda Center for Communicating Science (http://www.centerforcommunicatingscience.org/) provided training to UCSB faculty and administrators--with Trish participating-- as profiled (http://www.news....
Friday, June 3, 2016
Monika contributes a talk entitled "Trophic transfer and bioaccumulation of carbon nanotubes in a microbial food chain"  in the session "Environmental exposures to nanomaterials: Methods, approaches, detection and modeling", at the 8th International...
Thursday, June 2, 2016
Trish contributes a talk entitled "Implementing environmentally-relevant exposures and alternative test strategies to assess environmental nanotoxicology" in the session "Alternative test strategies, categorization and a tiered decision-making framework...
Tuesday, May 17, 2016
Laurie presents a poster entitled "Comparative Decay Kinetics of Fecal Indicator Bacteria, Host-associated Fecal Markers, and Pathogens in a Coastal California Lagoon" at the Water Microbiology 2016 Conference (https://waterinstitute.unc.edu/files/2016/...
Wednesday, April 27, 2016
Trish partcipated by invitation in the international "Nanomaterial Exposure Assessment Workshop" from April 27 - 29, 2016, at CEREGE (http://www.cerege.fr/) in Aix en Provence, France
Friday, April 1, 2016
Dr. Naresh Devarajan joined our group as an Associate Specialist in the area of microbiological water quality and microbial source tracking. Welcome, Naresh!
Thursday, March 31, 2016
Trish gave a seminar entitled "Studies from the Urban Water Environment: Case of Santa Barbara, CA", to the Environmental Engineering & Science Program at University of Illinois, Urbana-Champaign.
Tuesday, March 29, 2016
Staff researcher Patrick R. Roehrdanz takes a new position with Conservation International. Best wishes, Patrick!
Monday, February 22, 2016
Dominik Roth joins the lab group to perform his MS research. Welcome, Dominik!
Friday, February 19, 2016
Marina won an award for her 3 minute talk about her research at the Bren School annual Ph.D. Student symposium. Congratulations, Marina!
Monday, February 8, 2016
Dr. Dong Li recently joined our group as an Associate Specialist in the area of microbiological water quality and microbial source tracking. Welcome, Dong!
Friday, October 2, 2015
Zoe Welch and Ying Wang delivered  a poster entitled "Combined effects of engineered carbonaceous nanomaterial exposure and environmental stressors upon soil-grown soybeans", co-authored by UCSB, UTEP, and U.S. EPA colleagues, at the UCSB NRS Conference...
Monday, August 31, 2015
Dr. Jared Ervin is now a Senior Staff Engineer with Geosyntec Consultants.  Congratulations, Jared!
Tuesday, August 25, 2015
Many congratulations to alum Dr. Do Gyun Lee, Patrick Roehrdanz, Marina Feraud, and Dr. Jared Ervin for their manuscript co-authored with other collaborators, including Dr. Jay Means in the Bren School: "Wastewater compounds in urban shallow groundwater...
Friday, July 31, 2015
John Priester leaves for medical school at Tulane University.  Good luck, John!
Tuesday, June 30, 2015
Dr. Yuan Ge moves to the Chinese Academy of Sciences, starting his research program as Principle Investigator.  Best wishes, Yuan!
Monday, June 8, 2015
Trish participates in Ph.D. defense of Yue Yang, at EPFL in Switzerland. Congratulations, Yue Yang, on a successful defense!
Tuesday, June 2, 2015
Annual peer and agency evaluation of the UC CEIN, at UCLA/ CNSI.  Many congratulations to our group's participants--Zoe Welch, Ying Wang, Monika Mortimer, John Priester, and Yuan Ge--for their poster presentations and their great research contributions...
Monday, May 11, 2015
Ying Wang, and Zoe Welch, each are awarded a Mellichamp Sustainability Fellowship for their summer research. Congratulations, Zoe and Ying!
Tuesday, April 28, 2015
Laurie Van De Werfhorst presented at the first official stakeholder meeting for the new CBI-funded project, "Microbial Source Tracking in the Santa Barbara Region".  Great job, Laurie! 
Wednesday, April 22, 2015
Zoe Welch receives notice of her award for a 2015 One Health Student Summer Research Fellowship.  Congratulations, Zoe!
Friday, April 17, 2015
Sage Davis, with Dr. Joey Blankenship (Schimel Lab) won 2nd place in the "Art of Science" competition (The Schuller Lab and the Center for Science and Engineering Partnerships), for their amazing ESEM image of soil, mucilage and microbes. Beautiful work...
Saturday, April 4, 2015
Trish presents an invited talk entitled "Imposing Manufactured Nanomaterials on Plants and Microbes in Soil", in Qingdao, China.
Thursday, April 2, 2015
Marina Feraud passes her written Ph.D. qualifying exam.  Congratulations, Marina!!
Wednesday, March 25, 2015
Monika Mortimer presented a poster entitled "Toxic effects of multiwall carbon nanotubes to Pseudomonas aeruginosa and its predator Tetrahymena thermophila" at the spring meeting of the American Chemical Society, in Denver, CO. Congratulations, Monika!