John P. Isanhart

ORCID: 0000-0003-0208-1839
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Environmental Toxicology and Ecotoxicology
  • Toxic Organic Pollutants Impact
  • Mercury impact and mitigation studies
  • Avian ecology and behavior
  • Insect and Pesticide Research
  • Pesticide Residue Analysis and Safety
  • Oil Spill Detection and Mitigation
  • Drug Transport and Resistance Mechanisms
  • Fire effects on ecosystems
  • Land Use and Ecosystem Services
  • Heavy metals in environment
  • Sulfur Compounds in Biology
  • Animal Ecology and Behavior Studies
  • Atmospheric chemistry and aerosols
  • Forest Insect Ecology and Management
  • Amino Acid Enzymes and Metabolism
  • Species Distribution and Climate Change
  • Chemical Analysis and Environmental Impact
  • Water Quality and Pollution Assessment
  • Animal Nutrition and Physiology
  • Environmental Conservation and Management
  • Flood Risk Assessment and Management
  • Wildlife Ecology and Conservation
  • Bird parasitology and diseases
  • Remote Sensing and LiDAR Applications

United States Department of the Interior
2014-2024

Denver Federal Center
2017

United States Fish and Wildlife Service
2011-2013

Texas Tech University
2005-2011

Ecological risk assessment as currently practiced has hindered consideration of ecosystem services endpoints and restoration goals in the environmental management process. Practitioners have created barriers between procedures to clean up contaminated areas efforts restore functions. In this article, we examine linkages contaminant approaches with aim identifying ways improve outcomes. We advocate that project managers other stakeholders use an ecological planning framework, options included...

10.1002/ieam.1673 article EN cc-by Integrated Environmental Assessment and Management 2015-06-15

Nonlethal sampling of bird blood and feathers are among the more common ways estimating risk mercury exposure to songbird reproduction. The implicit assumption is that concentrations in or individuals captured a given area correlated with eggs from same area. Yet, this rarely tested. We evaluated blood, feathers, marsh wrens wetlands Great Salt Lake, Utah, and, at two spatial scales, specifically tested feather samples birds defined were predictive collected Mercury not within wetland unit,...

10.1021/es400910x article EN Environmental Science & Technology 2013-05-06

Abstract Contamination of aquatic ecosystems can have cascading effects on terrestrial consumers by altering the availability and quality insect prey. Comprehensive assessment these indirect food‐web contaminants natural resources their associated services necessitates using both ecological economic tools. In present study we an aquatic‐terrestrial tool (AT2), including decision trees, to aid practitioners researchers in designing contaminant effect studies for linked insect‐based food webs....

10.1002/etc.5609 article EN cc-by-nc Environmental Toxicology and Chemistry 2023-03-15

Abstract Many sampling and analytical methods can estimate the abundance, distributions, diversity of birds other wildlife. However, challenges with sample size capacity make these difficult to implement for resource‐limited monitoring programs. To apprise efficient attainable designs landbird programs limited observational data, we used breeding season bird point survey data collected in 2016 at four forest restoration sites Indiana, USA. We evaluated three subsets observed species...

10.1002/ieam.4992 article EN cc-by-nc-nd Integrated Environmental Assessment and Management 2024-09-18

Abstract Perchlorate, the oxidizer component in most solid rocket propellant formulations, is known to inhibit uptake of iodide into thyroid gland, thereby reducing production hormones, triiodothyronine and thyroxine (T 4 ). Thyroid hormones regulate metabolism endothermic organisms are responsible for maintenance homeothermic body temperatures. Little about effects perchlorate on metabolic capacity. The objectives present study were determine if subchronic (51 d; 0, 1, 10 mg/kg/d) chronic...

10.1897/04-306r.1 article EN Environmental Toxicology and Chemistry 2005-03-01

The wetlands of the Great Salt Lake ecosystem are recognized regionally, nationally, and hemispherically for their importance as breeding, wintering, migratory habitat diverse groups waterbirds. Bear River Migratory Bird Refuge is largest freshwater component provides critical breeding more than 60 bird species. However, also has a history both mercury selenium contamination, this pollution could reduce health reproductive success overall objective study was to evaluate risk contamination...

10.3133/ofr20151020 article EN Antarctica A Keystone in a Changing World 2015-01-01

Three case studies illustrate how adaptive management (AM) has been used in ecological restorations that involve contaminants. Contaminants addressed include mercury, selenium, and contaminants physical disturbances delivered to streams by urban stormwater runoff. All three cases emphasize the importance of broad stakeholder input early consistently throughout decision analysis for AM. Risk contaminant exposure provided analyses (e.g. selenium endangered razorback suckers, Stewart Lake;...

10.1111/rec.12583 article EN Restoration Ecology 2017-11-01

Abstract Little is known about the exposure and accumulation of polybrominated diphenyl ethers (PBDEs) in 2 species eagles inhabiting North America. The authors analyzed livers 33 bald 7 golden collected throughout Washington Idaho, USA, for 51 PBDE congeners. Total PBDEs ranged from 2.4 ng/g to 9920 wet weight. Bald associated with large urban areas had highest concentrations; more sparsely populated lowest concentrations. Congener patterns present study (brominated ether [BDE]‐47, BDE‐99,...

10.1002/etc.2742 article EN Environmental Toxicology and Chemistry 2014-11-03

The Natural Resource Damage Assessment and Restoration process assesses natural resource injury due to oil or chemical spills calculates the damages compensate public for those injuries. Ecological restoration provides a means recovering resources injured lost contamination from by restoring site after remediation, acquiring reconstructing equivalent off replace spill. In case of restored forests, once is implemented, monitoring forest ecology helps keep recovery on track, with maturation...

10.1002/ieam.4996 article EN cc-by-nc-nd Integrated Environmental Assessment and Management 2024-09-30
Coming Soon ...