title: Effects of deposit-feeding bivalve (Macomona liliana) density on intertidal sediment stability

authors: Lelieveld, S. D.

subjects: intertidal sandflat

abstract: Effects of macrofaunal feeding and bioturbation on intertidal sediment stability (u*crit) were investigated by manipulating density (0-3 x ambient) of the facultative deposit-feeding wedge shell (Macomona liliana) on the Tuapiro sandflat in Tauranga Harbour, New Zealand. Sediment stability increased up to 200% with decreasing M. liliana density and this was correlated with greater sediment microalgal biomass and mucilage content. The change in stability occurred despite homogeneity of grain size amongst experimental treatments, highlighting the importance of macrofaunal-microbial relationships in determining estuarine sediment erodibility.

text: Effects of deposit-feeding bivalve (Macomona liliana) density on intertidal sediment stability Effects of macrofaunal feeding and bioturbation on intertidal sediment stability (u*crit) were investigated by manipulating density (0-3 x ambient) of the facultative deposit-feeding wedge shell (Macomona liliana) on the Tuapiro sandflat in Tauranga Harbour, New Zealand. Sediment stability increased up to 200% with decreasing M. liliana density and this was correlated with greater sediment microalgal biomass and mucilage content. The change in stability occurred despite homogeneity of grain size amongst experimental treatments, highlighting the importance of macrofaunal-microbial relationships in determining estuarine sediment erodibility.

year: 2004-03-01

title: Cycloaurated gold(III) complexes with monoanionic thiourea ligands

authors: Smith, Tiffany Sharee

subjects: gold complexes

abstract: Using a simple one-pot procedure, reaction of cycloaurated gold(III) dihalide complexes [LAuCl₂] (L = 2-benzylpyridyl, 2-anilinopyridyl) with trisubstituted thioureas PhNHC(S)NR₂ (R = Me, Cy) and Me3N in methanol, followed by addition of excess NaBPh₄ gave the salts [Lau{SC(-NR₂)NPh}]⁺BPH₄⁻ containing N,S-chelated thiourea monoanion ligands. The compounds were obtained in good yields, and were characterised by ESI MS, elemental microanalysis and in two cases by X-ray structure determinations. The series of complexes was extended by additional microscale reactions of LAuCl₂ complexes (L = 2-benzylpyridyl, 2-anilinopyridyl, 2-benzoylpyridyl or picolinamide) with a wide range of trisubstituted thioureas, with products identified by ESI MS.

text: Cycloaurated gold(III) complexes with monoanionic thiourea ligands Using a simple one-pot procedure, reaction of cycloaurated gold(III) dihalide complexes [LAuCl₂] (L = 2-benzylpyridyl, 2-anilinopyridyl) with trisubstituted thioureas PhNHC(S)NR₂ (R = Me, Cy) and Me3N in methanol, followed by addition of excess NaBPh₄ gave the salts [Lau{SC(-NR₂)NPh}]⁺BPH₄⁻ containing N,S-chelated thiourea monoanion ligands. The compounds were obtained in good yields, and were characterised by ESI MS, elemental microanalysis and in two cases by X-ray structure determinations. The series of complexes was extended by additional microscale reactions of LAuCl₂ complexes (L = 2-benzylpyridyl, 2-anilinopyridyl, 2-benzoylpyridyl or picolinamide) with a wide range of trisubstituted thioureas, with products identified by ESI MS.

year: 2013-11

title: The discovery of the Waiorongomai goldfield in 1881

authors: Hart, Philip

abstract: The first reports of gold being found in the vicinity of the Waiorongomai Stream were made in early November 1880, and after the opening of the goldfield a small rush took place to this part of the mountain. The first claims were pegged out in December and the following January, encouraged by some gold being found, but few claims were registered, for most prospectors were quickly disappointed. Prospecting was difficult because of the rugged terrain and heavy bush, and interest quickly faded.
Then, in early October, Hone Werahiko announced his latest and best find and provided samples of payable ore taken from a large reef. Immense excitement ensued, as this was the first payable reef to be found, and after Werahiko led miners on an exhausting trip to his ‘New Find’ a rush set in and many claims were pegged out. The first official to inspect the ground anticipated that the reefs could be easily worked, once an access track was constructed. The small settlement of Te Aroha was revived because a real goldfield had been found, at last.

text: The discovery of the Waiorongomai goldfield in 1881 The first reports of gold being found in the vicinity of the Waiorongomai Stream were made in early November 1880, and after the opening of the goldfield a small rush took place to this part of the mountain. The first claims were pegged out in December and the following January, encouraged by some gold being found, but few claims were registered, for most prospectors were quickly disappointed. Prospecting was difficult because of the rugged terrain and heavy bush, and interest quickly faded.
Then, in early October, Hone Werahiko announced his latest and best find and provided samples of payable ore taken from a large reef. Immense excitement ensued, as this was the first payable reef to be found, and after Werahiko led miners on an exhausting trip to his ‘New Find’ a rush set in and many claims were pegged out. The first official to inspect the ground anticipated that the reefs could be easily worked, once an access track was constructed. The small settlement of Te Aroha was revived because a real goldfield had been found, at last.

year: 2016