A5054232090- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Molecular spectroscopy and chirality
- Porphyrin and Phthalocyanine Chemistry
- Advanced NMR Techniques and Applications
- Fish Ecology and Management Studies
- Organometallic Complex Synthesis and Catalysis
- Plant and animal studies
- Organometallic Compounds Synthesis and Characterization
- Marine and coastal plant biology
- Spectroscopy and Quantum Chemical Studies
- Axial and Atropisomeric Chirality Synthesis
- Ichthyology and Marine Biology
- Geriatric Care and Nursing Homes
- Isotope Analysis in Ecology
- Inorganic and Organometallic Chemistry
- Animal Behavior and Reproduction
- Microplastics and Plastic Pollution
- Family and Disability Support Research
- Forest ecology and management
- Electrocatalysts for Energy Conversion
- Photochemistry and Electron Transfer Studies
- Intergenerational Family Dynamics and Caregiving
- Coastal and Marine Management
- Crystallization and Solubility Studies
University of Leeds
2023-2024
California Academy of Sciences
2020-2023
James Cook University
2018-2020
ARC Centre of Excellence for Coral Reef Studies
2018-2020
Australian Research Council
2018-2019
St Andrew’s Hospital
2008
University of East Anglia
1996
University of Sussex
1989-1991
University of Toronto
1970-1971
University of Manitoba
1970
Local management improves coral reef’s capacity to recover from disturbances, but the signal attenuates unless properly measured.
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 561:217-231 (2016) - DOI: https://doi.org/10.3354/meps11953 Depth, bay position and habitat structure as determinants of coral reef fish distributions: Are deep reefs a potential refuge? Chancey MacDonald1,2,*, Tom C. L. Bridge2,3, Geoffrey P. Jones1,2 1Marine Biology Aquaculture Science, College Science...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental and theoretical studies of long-range proton-proton coupling constants in ring-substituted styrenesM. Barfield, C. J. MacDonald, I. R. Peat, W. F. ReynoldsCite this: Am. Chem. Soc. 1971, 93, 17, 4195–4202Publication Date (Print):August 1, 1971Publication History Published online1 May 2002Published inissue 1 August 1971https://pubs.acs.org/doi/10.1021/ja00746a017https://doi.org/10.1021/ja00746a017research-articleACS PublicationsRequest...
Complete analyses of the proton magnetic resonance spectra propylene oxide, epifluorohydrin, epibromohydrin, and epiiodohydrin shows that in all cases cisoid coupling constants over four bonds are negative, transoid positive. Dipole moments, together with vicinal CH—CH 2 X moiety, used to establish probable conformations for epihalohydrins. Conformational factors appear obscure any possible relationship between substituent electronegativity long-range constants.
At −40 °C the C—H bond of dichloromethyl group α,α,2,6-tetrachlorotoluene lies in plane ring. The proton resonance spectrum demonstrates a stereospecific five-bond coupling between and ring meta position. to para is essentially zero as expected from hyperconjugative mechanism. free energy activation rotation about 15 kcal/mole at 25 °C.
The complete analysis of the proton magnetic resonance spectrum epichlorohydrin as 10 mole% solutions in benzene and acetonitrile is reported. Extensive tickling experiments demonstrate that cisoid coupling constants over four bonds are negative, while corresponding transoid positive. Detailed results for solution, which non-equivalent protons —CH 2 Cl moiety have almost identical chemical shifts, show although all resonances may be unequivocally identified measured to a high order precision...
The solvent dependence of the proton chemical shift, geminal proton–proton, cis and trans proton–fluorine, fluorine–fluorine coupling constants in 1,1-difluoroethylene is reported for 25 solvents. shift couplings involving protons depend primarily on dielectric constant medium, but Onsager reaction field model inadequate to describe changes observed. depends also dispersion interactions with molecules. A comparison behavior spectral parameters vinyl fluoride, 1-chloro-1-fluoroethylene,...
On coral reefs, depth and gradients related to (e.g. light wave exposure) influence the composition of fish communities. However, most studies focus only on emergent reefs that break sea surface in shallow waters (<10 m). Great Barrier Reef (GBR), submerged (reefs do not surface) occupy an area equivalent all reefs. have received comparatively little research attention, communities associated with remain poorly quantified. Here, we quantify assemblages at each three depths (10, 20 30 m)...
AbstractThe strength and direction of sexual selection can vary among populations. However, spatial variability is rarely explored at the level social group. Here we investigate sex roles in paternally mouthbrooding, socially monogamous, site-attached pajama cardinalfish, Sphaeramia nematoptera. Females were larger more aggressive had a longer dorsal fin filament, indicating reversed roles. At scale groups, show that Bateman gradient reproductive variance depend on ratio size groups. In...
The signs of the intermethyl proton spin–spin coupling constants in ortho, meta, and para xylene derivatives (interbenzylic coupling) have been determined by double resonance techniques. [Formula: see text] are positive, negative, respectively, agreement with predictions theories based on σ–π interactions. magnitudes discussed terms values predicted these theories.
Escalating climate-related disturbances and asymmetric habitat losses will increasingly result in species living more marginal habitats. Marginal habitats may represent important refuges if individuals can acquire adequate resources to survive reproduce. However, at range margins are often distributed sparsely; therefore, increased effort suboptimal performance lead populations becoming non-self-sustaining sink-populations. Shifting resource availability is likely be particularly problematic...
Abstract Spatial refuges in peripheral habitats will become increasingly important for species persistence as climate change and other disturbances progressively impact habitat quality assemblage compositions. However, the capacity be determined part by species‐specific abilities to absorb costs related altered or decreased quantities of resources at range peripheries. We compared variations dietary strategies energy acquisition trade‐offs along depth gradients two obligate corallivores that...
The effects of organisational change on a medium secure ward for women with developmental disabilities are examined. Intervention followed the BAITS model (Milne et al, 2003) in focusing behavioural analysis, intervention, training and support as way amalgamating psychological perspectives to address problems promote positive attitude change. benefits this programme described terms pre‐ post‐changes perceived work environment, job satisfaction burn‐out, levels disturbed behaviour....
Abstract Understanding interactions between spatial gradients in disturbances, species distributions and species’ resilience mechanisms is critical to identifying processes that mediate environmental change. On coral reefs, a global expansion of bleaching likely drive spatiotemporal pulses resource quality for obligate associates. Using technical diving statistical modelling we evaluated how depth distribution, bleaching, competitor density interact with the quality, preference use resources...
Craig Macdonald consider how optical businesses can achieve net zero
Signs and magnitudes of long-range coupling constants in three phenylacetylene derivatives have been determined. Values the are discussed terms McConnell formulation compared with results MO–INDO–FPT calculations. Coupling dominated by π contributions. Estimated values hyperfine interaction for acetylene methylacetylene groups respectively Q CC≡CH = −12 CC≡CCH +12 G. The theoretical calculations excellent agreement experimental results. Both approaches allow quantitative estimation nine bond...
The configuration of certain substituted hexahydrocarbazoles 2, significance in connection with earlier work, has been established. A study the temperature dependence n.m.r. spectra N-acetyl derivatives, initiated intention distinguishing between cis- and trans-fused isomers, led to conclusion that distinction could not be made on this basis since all temperature-dependent phenomena, even cases where cis-fusion had established by other means, associated rotational isomerism group no...
Sexual dimorphism is a common in the animal kingdom and often linked to mate choice or competition for mates polygynous mating systems. However, sexual less species that form heterosexual pairs has not been recorded pair-forming coral-reef fish. Here we demonstrate pronounced morphological difference between males females humphead bannerfish (Heniochus varius)—a coral reef butterflyfish. Males of paired individuals collected Kimbe Bay, Papua New Guinea had substantially larger hump horn...