As element chemistry12/22/2023 Ecological roles and consequences of chemicals in aquatic environments.Ĭhemical cues influence the behavior of individuals and their ecological interactions with predators, prey, competitors, hosts, and mates. Behavioral response of whale sharks to odor plumes: implications for foraging ecologyĪrea 3.Chemical signals as non-consumptive effects: the influence of blue crab (Callinectes sapidus) urine on mud crabs (Panopeus herbstii).Identifying the mating pheromone of the copepod Temora longicornis through a metabolomic approach.Behavior responses of crab larvae in the presence of well-controlled upwelling and downwelling flow mimics.Sexual dimorphism and egg-carrying vulnerability in Eurytemora herdmani and Temora longicornis (copepods).This area also includes examining the role and identity of defensive compounds and signal molecules in population regulation and community structure. This area includes determining how chemical cues are transmitted in aquatic habitats and analyzing behavioral and sensory mechanisms by which animals detect and respond to these signals. The ability of animals to successfully use chemical signals determines their fate and the rates of critical ecological interactions. Sensory biology and ecology of aquatic chemical communication.Ĭhemical signals are used by animals to find prey, escape predators, locate/choose mates, and determine suitable habitats (Hay 2009). Metal reduction as a mechanism for ammonium oxidation in marine sedimentsĪrea 2.Effects of low concentrations of arsenic on nitrate reduction by Shewanella putrefaciens.Biodegradation of the allelopathic compound m-tyrosine and the pollutant 4-nitroaniline. Amino acid profiling in biological mixtures by reactive desorption electrospray ionization tandem mass spectrometry.18S rRNA-based methods for detection of dechlorinating bacteria in environmental samples and community analysis of dechlorinating consortia.Light intensity affects the timing and magnitude of N2 fixation by Trichodesmium (cyanobacteria).This area includes determining the mechanisms, rates, and impacts of these processes, as well as developing methods to study these transformations (e.g., in situ analysis of microbial populations, analytical chemical methods, metagenomic analyses, etc). Many of these transformations are mediated by microbes. The production and fate of these chemicals is often influenced by geochemical and biological processes in water columns, in sediments or in the guts of animals. Nutrients, allelopathic or toxic chemicals, and metabolic by-products can affect organisms in a variety of ways, from inhibiting or stimulating growth (Targett & Arnold 2001), to inducing aggregations or mediating habitat choice (McClintock & Baker 2001). Biological and geochemical transformations of chemicals in aquatic ecosystems.
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