Understanding how ecosystem nutrient availability influences parasites is challenging, especially for trophically transmitted parasites in hosts occupying higher trophic levels. Host tissue nutrient stoichiometry may elucidate these effects by indicating nutrient availability within a host’s environment and/or mediating these effects on parasites. We assessed these possibilities by manipulating nutrient availability in 11 expe...

Associations between patterns of brain connectivity and brain structural features have transdiagnostic relevance to psychopathology. There is considerable evidence for disruptions to the hippocampus and temporoparietal brain systems in psychotic disorders. The present study examines structure–function relationships—specifically, the relation of hippocampal volume with patterns of temporoparietal effective connectivity—in youth...

Despite extensive research on the western Pacific crown-of-thorns starfish (CoTS; Acanthaster cf. solaris ), especially from Australia’s Great Barrier Reef (GBR), there are persistent knowledge gaps that constrain understanding and management. Given renewed population irruptions of CoTS on the GBR, alongside escalating climate impacts and direct anthropogenic pressures, a quantitative assessment of knowledge gaps was undertake...

Coral bleaching is primarily driven by heat stress, yet additional environmental factors, such as nutrient availability and light attenuation, can affect bleaching severity. In this study, we assessed the interactive effects of chlorophyll a concentrations with heat stress (Degree Heating Weeks, DHW) on bleaching severity across inshore and offshore reefs of the Great Barrier Reef ( n = 1397). Using Generalised Additive Models...

The Amazon rainforest is a key component of the Earth system, regulating regional climate, sustaining high biodiversity and carbon stocks. However, it is threatened by climate and land‐use changes. In recent decades, the region has experienced intensified droughts and heatwaves, trends expected to worsen under future warming. In this study, we assess how the timing, length, and spatial distribution of the dry season across the...

Dryland ecosystems cover 41% of Earth's land surfaces, account for 44% of cultivated lands and 60% of food sources, and make large contributions to the global water and carbon cycles. However, these ecosystems are experiencing unprecedented extremes including heatwaves, floods, and droughts as well as hotter temperatures and often declining water resource availability. These ecosystems are some of the most challenging to monit...

Oviposition choice and larval performance are essential determinants of fitness in plant–herbivore interactions. The long‐standing preference–performance hypothesis (PPH) predicts that parents should oviposit on plants that maximize offspring performance; an abundance of work supports the PPH, but many exceptions limit its generality. These exceptions may stem from applying the PPH across diverse contexts without adequately co...

Understanding the timing, duration and effort put into reproduction is vital to successful management of any species. The southeastern United States is home to tremendous levels of aquatic biodiversity and was recently named one of the Earth's biodiversity hotspots. For some species, the fundamentals of age, growth, reproductive timing and ecology remain poorly understood. Percina aurora , the pearl darter, has been recently l...

Diversification between littoral and pelagic habitats is widespread in the fishes adaptively radiating in lakes, suggesting that where it occurs offspring spawned in a non-ancestral habitat may face few negative effects. We used littoral and pelagic ecotypes of pumpkinseed sunfish ( Lepomis gibbosus ) to investigate performance over the natal summer of age-0 juveniles spawned either in the ancestral littoral habitat of a Canad...