Symbiotic interactions in the marine environment have long been represented by mutualisms between photosymbionts and benthic marine invertebrates like corals and sponges. Although ‘upside-down’ epibenthic jellyfish in the genus Cassiopea also derive a substantial metabolic benefit from abundant communities of the dinoflagellate symbiont Symbiodinium, comparatively little is known about the effi...

The main objective of this study is to determine the ecological importance of mysids as a food item of selected fish species using C and N isotopes (stable isotopic study) and gut content analysis of fish. Fish samples (Galaxias maculates and Athrinidae sp.) and mysid samples (Tenagomysis chiltoni and T. novaezealandiae) were collected from Kakamatua Stream situated on the west coast of Aucklan...

The ever growing number of emerging micropollutants such as pharmaceuticals requests rapid and sensitive full-spectrum analytical techniques. Time-of-flight highresolution mass spectrometry (TOF-HRMS) is a promising alternative for the state-ofthe-art MS/MS instruments because of its ability to simultaneously screen towards a virtually unlimited list of suspect compounds and to perform target q...

The study of microbial eukaryotes has not traditionally been the realm of microbiologists, who focus mainly on bacteria. Molecular methods and an attempt at enrichment of protists were undertaken in this study. DGGE of timepoints from soil enrichments revealed a change in community members as well as some members' relative abundances. However, complications with faint or absent bands due to low...

Chocolate Pots hot springs (CP) is a unique, circumneutral pH, iron-rich, geothermal feature in Yellowstone National Park. Prior research at CP has focused on photosynthetically driven Fe(II) oxidation as a model for mineralization of microbial mats and deposition of Archean banded iron formations. However, geochemical and stable Fe isotopic data have suggested that dissimilatory microbial iron...

Mitochondrial citrate synthase was purified from leaves of Pisum sativum L. cv Progress 9. A three step purification was employed using ATP-Sepharose affinity chromatography which resulted in a 600-fold enrichment. Enzyme activity was assayed spectrophotometrically during greening of etiolated leaves under constant white light illumination. An increase (1.4 fold) in citrate synthase activity wa...

Arid and semiarid climates comprise roughly 40% of the earth's terrestrial surface. Deserts are predicted to be extremely responsive to global change because they are stressful environments where small absolute changes in water availability or use represent large proportional changes. Water and carbon dioxide ̄uxes are inherently coupled in plant growth. No documented global change has been mor...