The reference condition: predicting benchmarks for ecological and water-quality assessments

CP Hawkins, JR Olson, RA Hill - Journal of the North …, 2010 - journals.uchicago.edu
Benchmarks provide context and are a critical element of all ecological assessments. Over
the last 25 y, hundreds of papers have been published on various aspects of ecological …

Development of a fish-based index to assess the eutrophication status of European lakes

C Argillier, S Caussé, M Gevrey, S Pédron, J De Bortoli… - Hydrobiologia, 2013 - Springer
The use of the CEN (European Committee for Standardization) standard method for
sampling fish in lakes using multi-mesh gillnets allowed the collection of fish assemblages of …

Survey design and extent estimates for the Wadeable Streams Assessment

AR Olsen, DV Peck - Journal of the North American …, 2008 - journals.uchicago.edu
Abstract The US Environmental Protection Agency (EPA) conducted a Wadeable Stream
Assessment (WSA) of all wadeable streams and rivers in the conterminous US between …

Method of predicting reference condition biota affects the performance and interpretation of ecological indices

CP Hawkins, Y Cao, B Roper - Freshwater Biology, 2010 - Wiley Online Library
The statistical rigour and interpretability of ecological assessments is strongly affected by
how well we predict the biological assemblages expected to occur in the absence of human …

A predictive index of biotic integrity model for aquatic-vertebrate assemblages of western US streams

D Pont, RM Hughes, TR Whittier… - Transactions of the …, 2009 - Taylor & Francis
Because of natural environmental and faunal differences and scientific perspectives,
numerous indices of biological integrity (IBIs) have been developed at local, state, and …

Predicting natural base‐flow stream water chemistry in the western United States

JR Olson, CP Hawkins - Water Resources Research, 2012 - Wiley Online Library
Robust predictions of stream solute concentrations expected under natural (reference)
conditions would help establish more realistic water quality standards and improve stream …

Defining and characterizing coolwater streams and their fish assemblages in Michigan and Wisconsin, USA

J Lyons, T Zorn, J Stewart, P Seelbach… - … American Journal of …, 2009 - Taylor & Francis
Coolwater streams, which are intermediate in character between coldwater “trout” streams
and more diverse warmwater streams, occur widely in temperate regions but are poorly …

Modeling natural environmental gradients improves the accuracy and precision of diatom-based indicators

Y Cao, CP Hawkins, J Olson… - Journal of the North …, 2007 - journals.uchicago.edu
Diatom-based indicators can contribute significantly to comprehensive assessments of
stream biological conditions. We used modeling to develop, evaluate, and compare 2 types …

Regional fish community indicators of landscape disturbance to catchments of the conterminous United States

PC Esselman, DM Infante, L Wang, AR Cooper… - Ecological …, 2013 - Elsevier
Biological assessments of river conditions are increasingly conducted at regional and
continental scales that match the extent of large-scale river management efforts. Multimetric …

Predicting thermal reference conditions for USA streams and rivers

RA Hill, CP Hawkins, DM Carlisle - Freshwater Science, 2013 - journals.uchicago.edu
Temperature is a primary driver of the structure and function of stream ecosystems.
However, the lack of stream temperature (ST) data for the vast majority of streams and rivers …