Trends in fish prey capture by common terns following zebra mussel invasion : do terns track fish species abundance? /

The Common Tern (Sterna hirundo) is a ground nesting colonial seabird. Terns rely primarily on small prey fishes which they obtain through plunge diving for their survival as well as the survival of their offspring during the breeding season. The zebra mussel (Dreissena polymorpha) is a small bivalve mollusk that invaded North American waters in the late 1980's. Through its suspension feeding, the zebra mussel has the ability to alter the entire aquatic ecosystem, ultimately leading to a reduction in pelagic organisms including small prey fish. The objective of the study was to determine what (if any) indirect effects the invasion of the zebra mussel has had on fish prey captured by terns. The study took place in two separate two-year periods, 1990-91 and 1995-96 on a concrete breakwall off the north shore of Lake Erie near Port Colborne, Ontario. Daily nest checks revealed clutch initiation dates, egg-laying chronology, hatching success and morphological egg characteristics (length and breadth). Behavioural observations included time each sex spent in attendance with its brood, the frequency of feeding chicks and the prey species composition and size fed to chicks as well as to females (courtship feeding). Egg sizes did not differ between study periods, nor did feeding rates to chicks, suggesting that food was not a limiting resource. Terns spent less time with their broods (more time foraging) in the 1995-96 period. However, they also had significantly larger broods and fledged more offspring. The time of each individual foraging trip decreased, suggesting that fish were easier to obtain in 1995 and 1996. Lastly, kleptoparasitism rates decreased, suggesting that the costs of foraging (time, energy) actually decreased as fewer birds adopted this strategy to compensate for what I assumed to be a lack of available food (fish). The only significant difference between the periods of 1990, 1991 and 1995, 1996 was a change in diet. Terns delivered significantly fewer rainbow smelt and more emerald shiner in 1995 and 1996. However, the average size of fish delivered did not change. Thus, there was little impact on prey captured by Common Terns in Lake Erie since the invasion of the zebra mussel.

Skeletal muscle fibre-type comparison of whole tissue and subcellular membrane phospholipids and fatty acids

Membranes are dynamic structures that affect cell structure and function. Compositional changes ofmembranes have been shown with the application of a perturbation; however these are limited to whole tissue analysis. The purpose of this thesis was to compare the phospholipid (PL) fatty acid (FA) composition of rat whole muscle (Wm) to 1) purified and non-purified subsarcolemmal (SS) mitochondria in soleus, plantaris, and red gastrocnemius, and 2) sarcolemma, transverse-tubules, SS and intermyofibrillar (IMF) mitochondria fix)m whole hindlimb. The major findings were that 1) contamination significantly altered the PL FA composition of the SS mitochondrial membrane fraction, 2) Wm and SS mitochondria compositions differed between muscle types, and 3) Wm did not accurately reflect the PL FA composition of any isolated subcellular membranes, with each being unique from each other. As such, the relevancy of the trends reported in the literature of the effects of perturbations on Wm may be limited.

Physical volcanology, sedimentology, stratigraphy and petrochemistry of the Berry Creek metavolcanics: an Archean calc-alkaline complex, Lake of the Woods, Ontario

The steeply dipping, isoclinally folded early Precambrian (Archean) Berry Creek Metavolcanic Complex comprises primary to resedimented pyroclastic, epiclastic and autoclastic deposits. Tephra erupted from central volcanic edifices was dumped by mass flow mechanisms into peripheral volcanosedimentary depressions. Sedimentation has been essentially contemporaneous with eruption and transport of tephra. The monolithic to heterolithic tuffaceous horizons are interpreted as subaerial to subaqueous pumice and ash flows, secondary debris flows, lahars, slump deposits and turbidites. Monolithic debris flows, derived from crumble breccia and dcme talus, formed during downslope collapse and subsequent gravity flowage. Heterolithic tuff, lahars and lava flow morphologies suggest at least temporary emergence of the edifice. Local collapse may have accompanied pyroclastic volcanism. The tephra, produced by hydromagmatic to magmatic eruptions, were rapidly transported, by primary and secondary mechanisms, to a shallow littoral to deep water subaqueous fan developed upon the subjacent mafic metavolcanic platform. Deposition resulted from traction, traction carpet, and suspension sedimentation from laminar to turbulent flows. Facies mapping revealed proximal (channel to overbank) to distal facies epiclastics (greywackes, argillite) intercalated with proximal vent to medial fan facies crystal rich ash flows, debris flows, bedded tuff and shallow water to deep water lava flows. Framework and matrix support debris flows exhibit a variety of subaqueous sedimentary structures, e.g., coarse tail grading, double grading, inverse to normal grading, graded stratified pebbly horizons, erosional channels. Pelitic to psammitic AE turbidites also contain primary stru~tures, e.g., flames, load casts, dewatering pipes. Despite low to intermediate pressure greenschist to amphibolite grade metamorphism and variably penetrative deformation, relicts of pumice fragments and shards were recognized as recrystallized quartzofeldspathic pseudomorphs. The mafic to felsic metavolcanics and metasediments contain blasts of hornblende, actinolite, garnet, pistacitic epidote, staurolite, albitic plagioclase, and rarely andalusite and cordierite. The mafic metavolcanics (Adams River Bay, Black River, Kenu Lake, Lobstick Bay, Snake Bay) display _holeiitic trends with komatiitic affinities. Chemical variations are consistent with high level fractionation of olivine, plagioclase, amphibole, and later magnetite from a parental komatiite. The intermediate to felsic (64-74% Si02) metavolcanics generally exhibit calc-alkaline trends. The compositional discontinuity, defined by major and trace element diversity, can be explained by a mechanism involving two different magma sources. Application of fractionation series models are inconsistent with the observed data. The tholeiitic basalts and basaltic andesites are probably derived by low pressure fractionation of a depleted (high degree of partial melting) mantle source. The depleted (low Y, Zr) calc-alkaline metavolcanics may be produced by partial melting of a geochemically evolved source, e.g., tonalitetrondhjemite, garnet amphibolite or hydrous basalt.

City of Niagara Falls Plans, 1846, 1877, 1884, 1886, 1889-1890, 1892-1894, 1903-1905, 1910, 1914, 1919, 1925, 1927-1928, n.d.

The collection consists of 37 plans, surveys or maps of the City of Niagara Falls beginning in 1846 until 1928. Some of the plans were created for the Falls Company, a group of land speculators that included Buchanan, Murray, Street, Allen, Robinson and others. Other plans relate to the building of the suspension bridge and the railway. Some plans and drawing may refer to estate documents in RG 167 Niagara South estate and legal documents collection. Item 22 has been scanned for preservation purposes.

Gilbert McMicken document, n.d.

Gilbert McMicken emigrated to Upper Canada in 1832 and settled in Chippawa. In 1835 he was married to Ann Theresa Duff. In 1837 the family moved to Queenston where he was directly involved in the Kingston-Queenston trade endeavours begun by Robert Hamilton. He had a variety of interests, including a partnership with James Hamilton, son of Robert Hamilton. He was also a collector of customs in Queenston and operated the Niagara Suspension Bridge Bank for a time. He entered politics and represented Niagara as well as becoming mayor of Clifton, now part of Niagara Falls, Ont., in 1856. McMicken went on to have an illustrious career, serving as land agent and leader of Canada’s first undercover agency. McMicken moved to Manitoba and was active in business and politics. He died in Winnipeg in 1891. Source: Dictionary of Canadian Biography – Gilbert McMicken website (March 22, 2010)

Horton Family collection, 1912, 1919, 1924, n.d.

Dr. William Hamilton Merritt, Jr. was born in 1865 and died in 1924. He was the son of Jedidiah Prendergast Merritt and Emily Prescott, grandson of William Hamilton Merritt. In 1892 he was married to Maud Claudman Hudson of Memphis, Tennessee and had a daughter and a son. During World War I he commanded the 14th battery at Flanders and after becoming ill served as part of the 9th Canadian Field Ambulance, 3rd Canadian Division, serving at a military hospital in Orpington, Kent, England and in 1917 at a military hospital in France. Dr. Merritt served as alderman and mayor for the city of St. Catharines, Ont. He was also a vice-president of the Imperial Bank of Canada, and served on the board of the Niagara Falls Suspension Bridge. A memorial service was held in St. Thomas Church, St. Catharines, Ont. on April 24, 1924.

Benjamin Woodruff Price Papers, 1851, 1853-1860, 1862-1863, 1874, n.d.

The fonds includes sixty two items of correspondence between Benjamin Woodruff Price, aka Woodruff, Ben or Uncle, and various family members, both immediate and distant cousins. Also included is business correspondence related to Price’s activities as a watchmaker and/or jeweler. Benjamin Woodruff Price was born in Thorold Township ca. 1831, the son of Joseph Price and Mary Smith. B.W. Price married Ella or Ellen McGlashan (1851-1906) ca. 1868. Price died between 1891 and 1901, his burial location is unknown at present. A watchmaker and jeweler, Price lived most of his life in Fonthill, Ont. He also included auctioneer, undertaker and photographer as some of his other professional activities. His siblings included David Smith Price (wife Isabella Ann), John Smith Price (wife Elizabeth Jane), and sisters Susan Page (husband Edward Rice Page), Jerusha Price, Mary Price and Martha W. Stone (husband Dudley Ward Stone). John Smith Price died 18 April 1860, leaving no descendents. It is likely that G.W. Stone was a nephew to B.W. Price, the son of his sister Martha W. Stone and her husband Dudley Ward Stone. Susan Page was a sister of Benjamin Woodruff Price. She was married to Edward Rice Page and they had at least two children, Joseph and Clayton. At the time of this correspondence they lived in Suspension Bridge, NY, now part of Niagara Falls, New York. Edward Rice Page’s occupation was listed as saloon keeper. The Price family appears to have had a very large extended family. This information was gleaned from the contents of letters of Maggie Tisdale, daughter of Ephraim and Hannah (Price) Tisdale, P.A. or Ann Morgan, [may also be Phebe Ann] of Newark, NY? and Marietta House of Bayham Township. DeWitt Higgins of Suspension Bridge, NY aka Niagara Falls, NY was an auctioneer, specialized in buying jewellery, watches, clocks, from individuals and reselling his product to others like B.W. Price.

Second Welland Canal - Book 1, Survey Map 14 - St. Catharines and Lock 5

Survey map of the Second Welland Canal created by the Welland Canal Company showing the Canal along the eastern edge of the Town of St. Catharines. Identified structures associated with the Canal include Lock 5 and the towing path. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks are also identified and include bridges, streets, and roads (ex. Queenston Street, St. Catharines Macdamized Road and Suspension Bridge), a Pond, a number of unnamed bridges, Stinson's Distillery, and R. Collier's Saw Mill. Properties and property owners of note are: Concession 6 Lots 14 and 15, R. Collier, W. Gillespie, Orson Phelps, W. Chase, M. Bryant, John Soper, Winsor Chace, John Berryman, John Boyle, J. Madigan, B. F. Reynolds, W. Smaill, F. Stinson, G. Ward and Mrs. Soper.

Second Welland Canal - Book 1, Survey Map 15 - Hydraulic Race and Aqueduct in Grantham

Survey map of the Second Welland Canal created by the Welland Canal Company showing the Canal along the eastern edge of the Town of St. Catharines. Identified structures associated with the Canal include Lock 7, Lock House Lot, and the towing path. The surveyors' measurements and notes can be seen in red and black ink and pencil. Local area landmarks are also identified and include bridges, streets, and roads (ex. Queenston Road, St. Catharines Macdamized Road and Suspension Bridge), a hydraulic race, and the Hydraulic Aqueduct. Properties and property owners of note are: Concession 7 Lots 12, 13, and 14, M. Bryant, Mrs. Soper, J. Capner, O. Phelps, P. Marren, Mrs. Parnell, J. Carty, Mrs. Ward, and J. Goodenew.

Niagara Falls Park: Notice to Treat to Sutherland Macklem, Esquire, 1885

The Niagara Parks Commission administrative headquarters are located in Oak Hall which is on the cliff above Dufferin Islands. In 1798 this land was granted by the crown to United Empire Loyalist James Skinner until 1898. A century later it was the home of the Clarks, Streets and Macklems. These families controlled the mills of Bridgewater which was a pioneer industrial village located at Dufferin Islands. Then, it was known as Clark Hill. Colonel Thomas Clark, commander of the Second Lincoln Militia in the War of 1812 is the earliest known occupant of the house. When Clark died in 1837, the house went to Thomas Clark Street who was the son of the Colonel’s partner. Mr. Street was a bachelor and his sister, widow of Dr. T.C. Macklem, managed his household. Mrs. Macklem had 2 sons. The eldest son drowned in the Niagara River at the age of 8 and the younger son, Sutherland became heir to the estate. Mr. Macklem opened Cynthia Islands and Cedar Island to the public and had roads built to reach them. Two suspension bridges connected them to the mainland and tolls were charged on the bridges. The improvements to the land cost Macklem $18,962. He called the bridges “Bridge Castor” and “Bridge Pollux”. There was also an office built at the end of Bridge Castor. Macklem also spent $454 fixing up the Burning Spring Building (the burning spring is enclosed in a barrel which collects gas and lets it out through a tube at the top). Macklem received a yearly income of $56,378.79 from tourists and visitors. In 1887 Cynthia Islands and Cedar Island were deeded to the crown and became part of Queen Victoria Park. The name Cynthia was changed to Dufferin in honour of Lord Dufferin. Sources: www.niagarafrontier.com/parks.html www.niagarafrontier.com/burningsprings.html

Composite Photographs - William Woodruff and his children

The composite includes photos of: Richard Woodruff (1822-1887) brother of Samuel Woodruff, son of William Woodruff. He married Cornelia McCrumb. His son-in- law was Samuel Zimmerman of the bank. Richard was a director of the Niagara Suspension Bridge. Joseph Woodruff (1820-1886) son of William Woodruff. He married Julia Claus. He was the Sherriff of Lincoln County and one of the incorporators of the Zimmerman Bank. Samuel DeVeaux Woodruff (1819-1904) who was the son of William Woodruff. He married Jane Caroline Sanderson (1827-1912) William Woodruff (1793-1860) who was the son of Ezekiel Woodruff who was born on July 29, 1763 and moved to the Niagara area from Litchfield Connecticut. He died in Niagara on Nov. 26, 1836. Henry Counter Woodruff (1833-1916) was the 7th child of William Woodruff. He married Emma Eloise Osgood (1835-1925) Dr. William Woodruff (1830-1908) of London, Ont. was the son of William Woodruff. Helena Woodruff (1828-1892) was the daughter of William Woodruff. She married Joseph Patterson Boomer. Julia Woodruff (1825-1870) was the sister of Samuel DeVeaux Woodruff and the daughter of William Woodruff.

Steel Bridge View

The description reads "(1) General view of the Falls from the New Steel Bridge - 'Maid of the Mist' at landing - Niagara, U.S.A.". The reverse reads similar "General view from Suspension Bridge, Niagara Falls, U.S.A.".

Niagara Falls from Elevator Tower

The description below the image reads "225 Niagara Falls from Elevator Tower, New Suspension Bridge".

Envelope Addressed to Miss Julia Woodruff

Envelope addressed to Miss Julia Woodruff of St. Davids. Postmarks include: Suspension Bridge, N.Y., May 20, 1857; Clifton, May 20, 1857 and St. Davids, May 21, 1857.

Force potentiation as a modulator of contractile performance: Implications for control of skeletal muscle force and energetics of work

This thesis investigated the modulation of dynamic contractile function and energetics of work by posttetanic potentiation (PTP). Mechanical experiments were conducted in vitro using software-controlled protocols to stimulate/determine contractile function during ramp shortening, and muscles were frozen during parallel incubations for biochemical analysis. The central feature of this research was the comparison of fast hindlimb muscles from wildtype and skeletal myosin light chain kinase knockout (skMLCK-/-) mice that does not express the primary mechanism for PTP: myosin regulatory light chain (RLC) phosphorylation. In contrast to smooth/cardiac muscles where RLC phosphorylation is indispensable, its precise physiological role in skeletal muscle is unclear. It was initially determined that tetanic potentiation was shortening speed dependent, and this sensitivity of the PTP mechanism to muscle shortening extended the stimulation frequency domain over which PTP was manifest. Thus, the physiological utility of RLC phosphorylation to augment contractile function in vivo may be more extensive than previously considered. Subsequent experiments studied the contraction-type dependence for PTP and demonstrated that the enhancement of contractile function was dependent on force level. Surprisingly, in the absence of RLC phosphorylation, skMLCK-/- muscles exhibited significant concentric PTP; consequently, up to ~50% of the dynamic PTP response in wildtype muscle may be attributed to an alternate mechanism. When the interaction of PTP and the catchlike property (CLP) was examined, we determined that unlike the acute augmentation of peak force by the CLP, RLC phosphorylation produced a longer-lasting enhancement of force and work in the potentiated state. Nevertheless, despite the apparent interference between these mechanisms, both offer physiological utility and may be complementary in achieving optimal contractile function in vivo. Finally, when the energetic implications of PTP were explored, we determined that during a brief period of repetitive concentric activation, total work performed was ~60% greater in wildtype vs. skMLCK-/- muscles but there was no genotype difference in High-Energy Phosphate Consumption or Economy (i.e. HEPC: work). In summary, this thesis provides novel insight into the modulatory effects of PTP and RLC phosphorylation, and through the observation of alternative mechanisms for PTP we further develop our understanding of the history-dependence of fast skeletal muscle function.