5 citations · 11 across the 10 of their papers we have counts for
11 papers
Evidence for Magnetoreception in Red Drum (Sciaenops ocellatus), Black Drum (Pogonias cromis), and Sea Catfish (Ariopsis felis)
Joshua Courtney, Michael Courtney
Over the past few decades, magnetoreception has been discovered in several species of teleost and elasmobranch fishes by employing varied experimental methods including conditionin…
Review of Magnetic Shark Deterrents: Hypothetical Mechanisms and Evidence for Selectivity
Joshua Courtney, Ya'el Courtney, Michael Courtney
Several papers published since 2006 describe effects of magnetic fields on elasmobranchs and assess their utility in reducing negative interactions between sharks and humans, inclu…
Comments on "Analysis of permanent magnets as elasmobranch bycatch reduction devices in hook-and-line and longline trials"
Joshua M. Courtney, Michael W. Courtney
A recent study (Fish. Bull. 109:394-401 (2011)) purportedly tests two hypotheses: 1. that the capture of elasmobranchs would be reduced with hooks containing magnets in comparison…
Predictions Wrong Again on Dead Zone Area -- Gulf of Mexico Gaining Resistance to Nutrient Loading
Michael W. Courtney, Joshua M. Courtney
Mississippi River nutrient loads and water stratification on the Louisiana-Texas shelf contribute to an annually recurring, short-lived hypoxic bottom layer in areas of the norther…
National Oceanic and Atmospheric Administration Publishes Misleading Information on Gulf of Mexico "Dead Zone"
Michael W. Courtney, Joshua M. Courtney
Mississippi River nutrient loads and water stratification on the Louisiana-Texas shelf contribute to an annually recurring, short-lived hypoxic bottom layer in areas of the norther…
Nutrient Loading Increases Red Snapper Production in the Gulf of Mexico
Joshua M. Courtney, Amy C. Courtney, Michael W. Courtney
A large, annually recurring region of hypoxia in the northern Gulf of Mexico has been attributed to water stratification and nutrient loading of nitrogen and phosphorus delivered b…
Do Rainbow Trout and Their Hybrids Outcompete Cutthroat Trout in a Lentic Ecosystem?
Joshua M. Courtney, Amy C. Courtney, Michael W. Courtney
Much has been written about introduced rainbow trout interbreeding and outcompeting native cutthroat trout. However, specific mechanisms have not been thoroughly explored, and most…
Estimating Interaction Strengths with Correlations in Annual Relative Weight: Interspecific Competition and Predation in Fishes, Pueblo Reservoir, Colorado
Joshua M. Courtney, Amy C. Courtney, Michael W. Courtney
Quantifying interaction strength between species is of interest in food web studies for understanding population dynamics. Theory has run ahead of experiment in solving equations d…
Plump Cutthroat Trout and Thin Rainbow Trout in a Lentic Ecosystem
Joshua Courtney, Jessica Abbott, Kerri Schmidt +1
Background: Much has been written about introduced rainbow trout (Oncorhynchus mykiss) interbreeding and outcompeting cutthroat trout (Oncorhynchus clarkii). However, the specific…
Weight-Length Relationships in Gafftopsail Catfish (Bagre marinus) and Hardhead Catfish (Ariopsis felis) in Louisiana Waters
Joshua Courtney, Taylor Klinkmann, Joseph Torano +2
In spite of the abundance and commercial importance of these two species, there is little published weight-length data for the gafftopsail catfish (Bagre marinus) and hardhead catf…
Relative Condition Factors of Fish as Bioindicators One Year after the Deepwater Horizon Oil Spill
Joshua Courtney, Taylor Klinkmann, Amy Courtney +2
Creel surveys were performed over a three week period in late spring, 2011, in the Lafourche and Calcasieu area estuaries of the Louisiana Gulf Coast. Weights and lengths were meas…