Our team at ANS works collaboratively to predict, track and assess how the DRWI’s conservation activities improve water quality and the diversity of stream biota in order to improve the effectiveness of DRWI efforts. We synthesize and disseminate our findings to our conservation partners using a range of interactive tools and data products and to the scientific community through our conference presentations and publications. Meet our team, below, and learn about our various roles and expertise. 

Core Team

Stephanie Kroll

Stefanie Kroll

Watershed Ecology Section Leader 

Stefanie leads ANS’s work in the DRWI by providing scientific support to all the DRWI partners. She designs sampling to support data collection on Initiative effectiveness, coordinates all partner monitoring by leading Outcome Metrics Committees, provides support in sampling methods and data use to clusters, and shares results in technical and non-technical formats. In addition, she is working to advance our understanding of how DRWI activities contribute to restoration science. 

Lin Perez

Lin Perez

Environmental Data Science Section Leader 

Lin leads geospatial analysis and development of mapping applications to help guide and quantify impact of preservation and restoration investments made within the DRWI. Their goal is to make complex science accessible to investors and stakeholders making on the ground decisions within the Delaware River Watershed. Lin leads the Environmental Data Science (EDS) Section which specializes in watershed modeling, Application Program Interface (API) development, traditional geospatial analysis, and database management for all DRWI data. Lin co-chairs the DRWI Technical User Group, a cohort of modelers, data scientists, researchers, software developers and GIS professionals that guide and synchronize DRWI technical products and research. 

Marie Kurz

Marie Kurz

Biogeochemistry Section Leader 

Marie leads ANS's efforts to evaluate how water quality responds to human stressors and the DRWI’s conservation activities. She and her team collect and analyze water chemistry samples from across the Initiative and interpret and synthesize the results into technical and non-technical communications. Marie provides support to cluster organizations in water quality monitoring and data interpretation and in focus areas planning. She also develops synergistic research projects relating to ecological function and geochemical processing in streams.  

David Keller

David Keller

Fisheries Section Leader 

Dave oversees DRWI fish data collection, analysis and interpretation. He leads ANS’ fish data collection and provides guidance as necessary on fish assemblage monitoring and data interpretation. 

Carol Collier

Carol Collier

Senior Advisor for Watershed Management and Policy 

Carol specializes in linkage among science, planning and policy. She works on internal strategy teams and with outside organizations and agencies to develop holistic approaches that will be useful to implementors and decision makers. She is a DRWI Initiative Steward.  

Roland Wall

Roland Wall

Director, Patrick Center for Environmental Research 

Roland supervises the Academy’s DRWI Team, oversees strategic direction and project planning, liaises with senior Academy management and the William Penn Foundation.  

 

Water Quality

Marie Kurz

Marie Kurz,

Biogeochemist 

Leads water chemistry data collection, analysis, and interpretation. 

Melissa Bross

Melissa Bross

Biogeochemist 

Manages sample collection and analysis; Coordinates cluster samples and data. 

Tracey Curran

Tracey Curran

Biogeochemist 

Collects field samples and performs chemical analyses.  

Joseph Heiczinger

Joseph Heiczinger

Biogeochemist 

Collects field samples and performs chemical analyses. 

Paul Kiry

Paul Kiry

Nutrient Lab Manager 

Manages nutrient lab and performs chemical analyses. 

 

Bioassessment

Stephanie Kroll

Stefanie Kroll,

Aquatic Ecologist 

Leads watershed ecological data collection, analysis, and interpretation. 

Tanya Dapkey

Tanya Dapkey

Entomologist 

Manages and creates data products. 

Hayley Oakland

Hayley Oakland

Watershed Ecologist 

Analyzes data and collects field samples.  

Mariena Hurley

Mariena Hurley

Phycologist 

Identifies algae, analyzes data and collects field samples. 

David Keller

David Keller

Fisheries Biologist 

Leads fish data collection, analysis, and interpretation. 

Allison Stoklosa

Allison Stoklosa

Fisheries Biologist 

Coordinates fish data collection and management activities.  

 

Digital Tool Development and Data Management

Lin Perez

Lin Perez

Software Developer 

Leads development of open-source mapping applications and geospatial analysis.  

Michael Campagna

Michael Campagna

Data Scientist 

Specializes in hydrologic modeling, API development, database management and geospatial analysis.  

Julia Duriske

Julia Duriske

Data Scientist 

Performs database management, GIS analyses and generates digital communications products.  

 

Planning, Policy, and Impact Tracking

Lin Perez

Lin Perez

Software Developer 

Leads development and stakeholder adoption of project and metric tracking applications.  


Carol Collier

Watershed Management and Policy Expert 

Specializes in linkages among science, planning and policy.  


Alexis Schulman

Environmental Planner and Social Scientist 

Specializes in urban infrastructure, planning and policy.  

Field and Lab Support


Amanda Chan

Field Crew Leader 

Manages and leads field teams, site permissions and data.  


Danielle Odom

Macroinvertebrate Taxonomist 

Collects field samples and leads field teams.  


Paul Overbeck

Fisheries Biologist 

Manages lab activities and supports field surveys.  


Kathryn Longwill

Environmental Scientist 

Prepares algae samples in the lab.  


Malcolm Newman

Environmental Scientist 

Collects field samples.  


Kathryn Christopher

Science Communication Manager 

Communicates and promotes our research.  

Environmental Research