The collaborative design which joins wildlife biologists and hydrologists enables ARMI to ask the kinds of questions it does about the environmental variables that affect amphibians in a truly integrated manner. Understanding how water quality, quantity, or timing affects amphibians is a critical component of ARMI research.

A hydrologist is associated with each ARMI region and works with the ARMI PI to develop and implement research and monitoring projects. These collaborations enable ARMI to ask questions about how water quality (e.g., nutrients, agro-chemicals, acidification), water budgets (e.g., ground and surface water models), storm surge impacts, or other hydrologic conditions can affect amphibian life cycles, disease transport, or habitat quality.


Hydrologic Investigations
USGS Toxics Substances Hydrology program

Pesticide lab.
K. Jones (USGS) extracting a water sample for pesticide analysis at Pesticide Fate Research Laboratory. Photo by: R. Todd.

Water - ARMI Papers & Reports

Data Release Water level data from select depressional wetlands at Saint Marks National Wildlife Refuge: July 2010 - May 2019 (ver. 2.0, August 2022)
Authors: Jeffrey W Riley
Date: 2022-08-08 | Outlet: ScienceBase
This Data Release represents geospatial and tabular data for a study investigating linkages between local terrain and wetland hydroperiod and was supported by the U.S. Geological Survey (USGS) Amphibian Research and Monitoring Initiative (ARMI). This dataset contains wetland water level data from Saint Marks National Wildlife Refuge (SMNWR). Data include records of water level and water temperature measurements from select wetlands beginning in July 2010 and ending in 2019. Not all wetlands span this entire period as different phases of studies resulted in different time periods of data collection. Instrumentation included a staff gage and a non-vented continuous logging pressure transducer that logged data at 1-hour intervals. The dataset consists of 4 separate items:
1. water level monitoring site Locations (tabular data)
2. wetland perimeters (GIS vector data)
3. water level and water temperature data for 59 select wetlands (tabular data)
4. revision history text file that describes the changes from the original release to version 2.0.
Trend Data Non-federal lands in Iowa, Illinois, Wisconsin, and Minnesota: Acris blanchardi ( Blanchard's Cricket Frog)
Location: Varied with the survey type. For the 2006 nighttime call surveys of Acris crepitans (and subseque... ; Non-federal lands in Iowa, Illinois, Wisconsin, and Minnesota
Describe baseline amphibian diversity, gross external deformities, and the presence of pathogens relative to environmental conditions. Estimate baseline occupancy and detection probabilities when possible.
Trend Data Terrestrial Wetland Global Change Research Network (TWGCRN): Pseudacris crucifer ( Spring Peeper)
Location: Tamarac NWR, St. Croix National Scenic Riverway, North Temperate Lakes Long-term Ecological Resea... ; North America
Work with partners and collaborators across North America to describe baseline occupancy, diversity, and relative abundance and monitor and describe any changes in populations relative to changes in climate, land cover/use, human activities, hydrology, and disease using standard methods. Note: Research locations at the TNWR, SCNSR, NTLLTER, and UMR also are research nodes in the TWGCRN.
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