Ian R. Hoppe's research while affiliated with University of Nebraska at Lincoln and other places

... However, Red-backed and Superb Fairywrens breeding at the same site form substantially smaller breeding groups on average than Variegateds despite all being subjected to the same nest predator and brood parasite species and abiotic conditions. Differences in group size among these cooperatively breeding congeners are likely due to intraspecific variation in response to the same environmental conditions, as was shown recently in Superb and Purple-backed Fairywrens along an environmental gradient (Johnson et al. 2023) Reforestation efforts at our study site have seemingly improved Variegated habitat at the expense of open savanna habitat for Red-backed and Superb Fairywrens (Webster et al., personal observation), which could also explain larger group sizes in the former besides potential fixed intraspecific differences in sociality. Groups identified via social network analysis in 2016 matched the groupings assigned through routine monitoring to almost exactly (95%), thus lending confidence in our group assignments across study years. ...

... Or, compare the behavioural repertoire or niche dimensions of introduced species in both species-rich and species-poor areas a common bird call (Martínez et al., 2022). Differences in foraging efficiencies and sensory capabilities can provide opportunities for interspecific information use: for example, in a recent study of foraging choices in mixedspecies flocks, all bird species maintained or increased their foraging overlap with other members of the flock, by selectively choosing flock mates or flexibly adjusting their behaviour (Vander Meiden et al., 2022), and members of scavenger community are attracted to vultures with superior efficiency and sensory capability for finding carcasses (Naves-Alegre et al., 2022). When selective interspecific information use directly, or its ecological consequences, result in higher fitness, evolutionary consequences become possible. ...

... We tested adult copepods for either hypoxia tolerance or low pH tolerance to determine if the diurnal correlation of the stressors resulted in phenotype correlation. Here we define correlated evolution as two or more traits evolving synchronously with each other [49][50][51][52]; specifically, this definition notes the observed pattern without assumptions of a mechanistic link between the traits being measured. We also distinguish it from coadaptation which implies a direct link between two evolving traits and note that correlated evolution would be a necessary pattern for coadaptation to occur. ...

... The effects of extreme weather events on prairie-chicken populations are unclear. Researchers reported that prairie-chicken nest success is negatively affected by solar radiation, potentially caused by heat stress for females incubating nests (Hovick et al. 2014(Hovick et al. , 2015, and that higher temperatures reduce the duration of incubation off-bouts, potentially restricting a female's ability to take in sufficient amounts of food (Hoppe et al. 2019). Long-term data on demographic parameters over a wide variety of environmental conditions for this species is limited, which hinders the ability to assess risk associated with changing weather patterns. ...