NSIS Volume 35 - Part 1
Permanent URI for this collectionhttps://hdl.handle.net/10222/15107
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Item Open Access Table of contents (v. 35, p. 1)(Dalhousie Printing Centre, 1985-12) Nova Scotian Institute of ScienceItem Open Access Range extension of little bluestem (Andropogon scoparius) (Schizachyrium scoparium) in Nova Scotia.(Dalhousie Printing Centre, 1985-12) Nova Scotian Institute of Science; Hall, I. V. (Ivan Victor), 1927-Item Open Access The blunthead puffer, Sphoeroides pachygaster (Muller and Troschel, 1848) (Pisces: Tetraodontidae) new to Nova Scotia and Canada.(Dalhousie Printing Centre, 1985-12) Gilhen, John; Gruchy, C.G.; McAllister, Donald Evan,1934-; Nova Scotian Institute of ScienceThe puffers (Tetraodontidae) are small stout-bodied fishes which, when threatened, inflate a sac-like expansion of the gullet, dramatically expand their size and become spherical in shape. Two species, the oceanic puffer, Lagocephalus lagocephalus (Linnaeus, 1758), and the northern puffer, Sphoeroides maculatus (B loch and Schneider, 1801), have been previously reported in Canadian waters. We follow the format of Leim and Scott (1966) in our description of the blunthead puffer, Sphoeroides pachygaster, the most recently reported species of puffer for Canadian inshore waters.Item Open Access Discovery of an extensive area of Laminaria saccharina in Minas Basin, Nova Scotia.(Dalhousie Printing Centre, 1985-09) Gratto, Gary William, 1955-; Bleakney, J. Sherman; Nova Scotian Institute of ScienceItem Open Access Observations on the seabirds of Manawagonish Island, New Brunswick: movements and population changes 1940-1983.(Dalhousie Printing Centre, 1985-09) Astle, W.O.; McAlpine, Donald F; Nova Scotian Institute of ScienceSince 1940, significant changes in the population of seabirds nesting on Manawagonish Island, New Brunswick have been observed. Most notably there were large increases in the numbers of nesting great black-backed gulls, Larus marinus, and double-crested cormorants, Phalacrocorax auritus. Dispersal patterns for herring gulls, L. argenfatus, from this colony show a late summer and early fall movement northward in to the Northumberland Strait and Gulf of SI. Lawrence, as well as southward travel as far as the Gulf of Mexico and a summer concentration around Cape Cod. During the winter months birds appear to congregate in metropolitan areas between long Island and Philadelphia.Item Open Access Application of 13C NMR spectroscopy in the assignment of 1H NMR signals of nonequivalent SCH3 groups.(Dalhousie Printing Centre, 1985-09) Hooper, Donald L.; Grossert, J.Stuart; Neaves, W. M. (William Maynard), 1954-; Nova Scotian Institute of ScienceThe SCH3 groups of 3- and/or 5 alkyl substituted 2,4,6-trithiaheptanes have almost identical chemical shifts in both 1H and 13C nmr spectra. A combination of gated decoupling and single frequency off-resonance decoupling, followed by the construction of graphs of the type proposed by Pachler, allows the assignment of the 1H nmr signals.Item Open Access Sublitloral gammaridean amphipods of soft sediments in the Bay of Fundy(Dalhousie Printing Centre, 1985-09) Wildish, David, 1939-; Dadswell, Michael J.; Nova Scotian Institute of ScienceTwo benthic sampling designs were used to collect gammaridean amphipods of soft sediments in the Bay of Fundy for taxonomic analysis. The first was a survey consisting of two grab samples at 266 stations spread throughout the Bay to determine geographic distribution. The second involved intensive sampling at two stations to determine seasonal changes in species richness, density, and biomass. Ninety-nine amphipod species were found . Two species were new to science and 6 are additions to the Canadian Atlantic fauna. Certain amphipods were limited to 1 or 2 of the 3 major surficial sediment types in the Bay, while other species were found on all sediment types. Seasonal sampling over a 2-yr period showed that gammaridean amphipod species richness was less, individual density and biomass were greater, at a shallow estuarine location compared to a deep {80 ml location. Two of the 3 dominant gammarideans at the shallow location were only temporary occupants. The deep location had 6 dominant species which were present throughout the 2-yr sampling period, although changes in subdominant species and densities suggested the occurrence of a perturbing event of unknown nature.