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Journal articles on the topic 'Loon Lake'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Uher-Koch, Brian D., Kenneth G. Wright, Hannah R. Uher-Koch, and Joel A. Schmutz. "Effects of Fish Populations on Pacific Loon (Gavia pacifica) and Yellow-billed Loon (G. adamsii) Lake Occupancy and Chick Production in Northern Alaska." ARCTIC 73, no. 4 (2020): 450–60. http://dx.doi.org/10.14430/arctic71533.

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 Predator populations are vulnerable to changes in prey distribution or availability. With warming temperatures, lake ecosystems in the Arctic are predicted to change in terms of hydrologic flow, water levels, and connectivity with other lakes. We surveyed lakes in northern Alaska to understand how shifts in the distribution or availability of fish may affect the occupancy and breeding success of Pacific (Gavia pacifica) and Yellow-billed Loons (G. adamsii). We then modeled the influence of the presence and abundance of five fish species and the physical characteristics of lakes (e.g., h

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2

Parker, Karl E. "Common loon reproduction and chick feeding on acidified lakes in the Adirondack Park, New York." Canadian Journal of Zoology 66, no. 4 (1988): 804–10. http://dx.doi.org/10.1139/z88-119.

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The effects of lake acidification on common loon reproduction were studied on a total of 24 Adirondack lakes from May through August in 1983 and 1984. The lakes ranged in size from 10.5 to 179 ha; pH ranged from 4.65 to 6.77 and alkalinity from −66 to 111 μequiv./L. Although loons nesting on small, low-pH lakes had a high fledging rate, possibly because of reduced disturbance or predation, no significant relationship (P > 0.10) was found between lake acidity status and loon reproductive success. No chick mortality could be attributed to lake acidification, but chicks on low-pH lakes were ge

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3

Mills, Tamara K., and Brad A. Andres. "Changes in Loon (Gavia spp.) and Red-necked Grebe (Podiceps grisegena) Populations in the Lower Matanuska-Susitna Valley, Alaska." Canadian Field-Naturalist 118, no. 2 (2004): 210. http://dx.doi.org/10.22621/cfn.v118i2.915.

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More than two-thirds of the human population of Alaska resides in the south-central portion of the state, where its continued growth is likely to affect some wildlife populations negatively. To assess changes in waterbird populations in this region, we compared counts of Common Loons (Gavia immer), Pacific Loons (G. pacifica), and Red-necked Grebes (Podiceps grisegena) made on Matanuska-Susitina Valley lakes. In general, the number of lakes occupied by loon or grebe pairs decreased between 1987 and 1999. Decreases in the number of lakes occupied by Common Loons were less drastic in the northwe

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4

Van Winckel, Nance. "At Loon Lake." Iowa Review 30, no. 3 (2000): 80. http://dx.doi.org/10.17077/0021-065x.5332.

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5

Alvo, Robert. "Common Loon, Gavia immer, Breeding Success in Relation to Lake pH and Lake Size Over 25 Years." Canadian Field-Naturalist 123, no. 2 (2009): 146. http://dx.doi.org/10.22621/cfn.v123i2.693.

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I monitored Common Loon (Gavia immer) breeding success in relation to lake pH (range 4.0–8.5) between 1982 and 2007 on 38 single-pair lakes (5–88 ha) in the Sudbury, Ontario, area. No chicks fledged on lakes with pH < 4.4. Chicks fledged on lakes with slightly higher pH only if the lakes were relatively large. Acidic lakes became less acidic as sulphur dioxide emissions from the Sudbury smelters and sulphur deposition from other long-range sources decreased. Two lakes initially too acidic to support successful loon reproduction eventually had successful reproduction. One loon pair used two

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6

Reimchen, Thomas, and Sheila Douglas. "Loon abundance and behaviour over four decades at a remote ecological reserve on Haida Gwaii, British Columbia, Canada." Canadian Field-Naturalist 135, no. 1 (2021): 28–38. http://dx.doi.org/10.22621/cfn.v135i1.2617.

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Early studies (1976–1982) of the Drizzle Lake Ecological Reserve on Haida Gwaii, British Columbia focussed on the endemic Giant Threespine Stickleback (Gasterosteus aculeatus) and their predators. These surveys showed daily visits to the small lake (110 ha) by up to 59 adult non-breeding Common Loon (Gavia immer), an important stickleback predator and up to 19 breeding and non-breeding adult Red-throated Loon (Gavia stellata), which leave daily to forage in nearby marine waters. We continued loon surveys for 17 additional years (1983–1989, 2011–2020) and found that aggregations of non-breeding

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7

McDuffie, Laura A., Julie C. Hagelin, Marian L. Snively, Grey W. Pendleton, and Audrey R. Taylor. "Citizen Science Observations Reveal Long-Term Population Trends of Common and Pacific Loon in Urbanized Alaska." Journal of Fish and Wildlife Management 10, no. 1 (2019): 148–62. http://dx.doi.org/10.3996/082018-naf-002.

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Abstract For more than 30 y, the Alaska Loon Watch (1985–1999) and the Alaska Loon and Grebe Watch (2000–2015) engaged citizen scientist participants to record more than 10,000 observations of common loons Gavia immer and Pacific loons Gavia pacifia at 346 lakes in five subregions of southcentral Alaska. We used generalized linear mixed models to estimate long-term trends in adult loon counts and chick survival and examined environmental variables associated with loon abundance. Adult common loon counts increased in all five subregions by 0.6–3.6% annually, whereas Pacific loons decreased 3% i

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8

Gerrard, Jon M., Elston Dzus, Gary R. Bortolotti, and P. Naomi Gerrard. "Water-bird population changes in 1976–1990 on Besnard Lake, Saskatchewan: increases in loons, gulls, and pelicans." Canadian Journal of Zoology 71, no. 8 (1993): 1681–86. http://dx.doi.org/10.1139/z93-235.

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Declines in Common Loon (Gavia immer) populations associated with increasing human use of lakes have been reported from many areas of North America. In the present report we describe a lake in northern Saskatchewan, Besnard Lake, where there has been a substantial increase in the number of loons, from about 85 in 1976–1979 to about 165 in 1990. A comparison was made with numbers of other birds associated with water. Increases were also seen in American White Pelicans (Pelecanus erythrorhynchos), Osprey (Pandion haliaetus), Great Blue Herons (Ardea herodias), Herring Gulls (Larus argentatus), R

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9

Nocera, Joseph J., and Neil M. Burgess. "Diving schedules of Common Loons in varying environments." Canadian Journal of Zoology 80, no. 9 (2002): 1643–48. http://dx.doi.org/10.1139/z02-157.

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Many species of diving birds adjust their foraging behaviour in response to variation in their environment. The Common Loon (Gavia immer) is a visually oriented predator sensitive to environmental variation, yet little is known about the flexibility of its diving behaviour. We tested the hypothesis that loons adjust their diving schedules by increasing or decreasing the dive duration during foraging bouts to accommodate environmental variation during the breeding season. The dive duration and dive-pause components of the loon dive cycle did not vary among lakes with different lake chemistry, l

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10

Welykholowa, Doug. "2018 Loon Initiatives Report." Blue Jay 77, no. 1 (2019): 29–31. http://dx.doi.org/10.29173/bluejay372.

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Welykholowa, Doug. "2017 Loon Initiatives Report - Madge Lake." Blue Jay 75, no. 4 (2018): 22–25. http://dx.doi.org/10.29173/bluejay11.

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12

Farrant Bevilacqua, Winifred. "Loon Lake: E. L. Doctorow's Pastoral Romance." Critique: Studies in Contemporary Fiction 53, no. 1 (2012): 49–65. http://dx.doi.org/10.1080/00111611003717717.

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13

Gingras, B. A., and C. A. Paszkowski. "Breeding patterns of Common Loons on lakes with three different fish assemblages in north-central Alberta." Canadian Journal of Zoology 77, no. 4 (1999): 600–609. http://dx.doi.org/10.1139/z99-013.

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Studies of the Common Loon, Gavia immer, in eastern Canada and the United States suggest that the species' dependence on fish for food limits its breeding habitat to large deep lakes with stocks of fish sufficient to support adults and chicks. In central Alberta, breeding Common Loons are widespread, occurring on nutrient-rich lakes that vary in morphometry and prey base. From 1993 to 1997, small shallow lakes that were fishless (invertebrates were available as principal prey) or contained small-bodied fishes ("minnow lakes"), as well as larger deeper lakes containing large-bodied fishes ("pik

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14

Found, C., S. M. Webb, and M. S. Boyce. "Selection of lake habitats by waterbirds in the boreal transition zone of northeastern Alberta." Canadian Journal of Zoology 86, no. 4 (2008): 277–85. http://dx.doi.org/10.1139/z07-137.

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We examined habitat characteristics associated with presence or absence of 16 waterbird species on 113 lakes during 2001–2006. We found that piscivorous species such as pelicans, loons, and mergansers were found on fish-bearing lakes, while birds that typically nest in emergent vegetation (e.g., coots, grebes) strongly preferred water bodies with moderate to high levels of emergent macrophytes. The presence of a riparian buffer was important for loons and several species of waterbird that nest on the backshore. Moderate to deep lake depth and high water clarity also were important for some spe

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15

Whitlock, Cathy, Patrick J. Bartlein, and Kelli J. Van Norman. "Stability of Holocene Climate Regimes in the Yellowstone Region." Quaternary Research 43, no. 3 (1995): 433–36. http://dx.doi.org/10.1006/qres.1995.1049.

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AbstractA 12,500-yr pollen record from Loon Lake, Wyoming provides information on the climate history of the southwestern margin of Yellowstone National Park. The environmental reconstruction was used to evaluate hypotheses that address spatial variations in the Holocene climate of mountainous regions. Loon Lake lies within the summer-dry/winter-wet climate regime. An increase in xerophytic pollen taxa suggests drier-than-present conditions between ca. 9500 and 5500 14C yr B.P. This response is consistent with the hypothesis that increased summer radiation and the expansion of the east Pacific

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16

Houston, C. Stuart, Frank Scott, and Rob B. Tether. "Productivity of Ospreys, Pandion haliaetus, Affected by Water Levels Near Loon Lake, Saskatchewan, 1975-2002." Canadian Field-Naturalist 124, no. 3 (2010): 219. http://dx.doi.org/10.22621/cfn.v124i3.1077.

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Between 1975 and 2002, diminished breeding success of Ospreys was associated with drought and falling lake levels in the western half of our study area near the town of Loon Lake, west-central Saskatchewan. Only 46% of nest attempts were successful in the west compared to 72% in the east, producing 0.88 young per accessible nest in the west and 1.42 in the east. Breeding success was greater in the eastern half, where water levels were stable, in spite of increased human use of the resort lakes there. Our unique long-term Canadian data base results support Ogden's 1977 prediction that Osprey pr

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17

Hadarics, Tibor. "New species in the Hungarian avifauna in 2016." Ornis Hungarica 25, no. 2 (2017): 104–8. http://dx.doi.org/10.1515/orhu-2017-0017.

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Abstract Two new species appeared in the Hungarian avifauna in 2016: the Rock Pipit and the Yellow-billed Loon. The Rock Pipit was trapped and ringed in the habitat reconstruction area (Borsodi-dűlő) near Fertőújlak on 10th October. The Yellow-billed Loon was seen and photographed on the Lake Balaton at Balatonföldvár, Szántód and Zamárdi on 3–13th December. The number of bird species which occurred in Hungary has risen to 414 with the occurrences of these species.

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18

Tuttle, Carrie M., and Martin D. Heintzelman. "A loon on every lake: A hedonic analysis of lake water quality in the Adirondacks." Resource and Energy Economics 39 (February 2015): 1–15. http://dx.doi.org/10.1016/j.reseneeco.2014.11.001.

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19

ZENTNER, R. P., C. A. CAMPBELL, and H. UKRAINETZ. "THE ECONOMICS OF FERTILIZING BROMEGRASS IN SASKATCHEWAN." Canadian Journal of Plant Science 69, no. 3 (1989): 841–59. http://dx.doi.org/10.4141/cjps89-100.

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A 5-yr study on a Dark Brown Loam at Scott and a 9-yr study on a Gray Luvisolic loam at Loon Lake, Saskatchewan, were used to determine the effect of rate of urea (46-0-0) and ammonium nitrate (34-0-0) fertilization on net returns from bromegrass (Bromus inermis Leyss.) production when the N was broadcast annually or as a single application at the start of the experiment. Each N source was applied at annual rates of 0, 50, 100, and 200 kg N ha−1 and at single application rates of 0, 100, 200, 400, and 800 kg ha−1. The ammonium nitrate was also applied at rates of 600 and 1000 kg ha−1. Comparis

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20

Paruk, James D., Michael Chickering, John N. Mager, Steven C. Wilkie, and Richard H. M. Espie. "Initial indications of polycyclic aromatic hydrocarbon exposure in Saskatchewan common loons." FACETS 3, no. 1 (2018): 849–57. http://dx.doi.org/10.1139/facets-2018-0009.

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Mercury (Hg) and polycyclic aromatic hydrocarbons (PAHs) are global pollutants known for their toxicity to wildlife. Because of their trophic position, common loons ( Gavia immer (Brünnich 1764)) are excellent indicators of environmental quality. In 2014 and 2015, tissue samples of ten adult common loons (plus one recapture) were obtained in Meadow Lake Provincial Park, Saskatchewan, and assessed for Hg and PAH exposure. Blood and feather levels of these contaminants are indicative of exposure during breeding and in wintering areas, respectively. Compared with an international Hg database, blo

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21

Solovyeva, D. V., J. D. Paruk, J. Tash, et al. "Post-breeding densities, population sizes and lake size partitioning of loon species in western Chukotka, Russia." Contemporary Problems of Ecology 10, no. 6 (2017): 621–31. http://dx.doi.org/10.1134/s1995425517060130.

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22

Pollentier, Christopher D., Kevin P. Kenow, and Michael W. Meyer. "Common Loon (Gavia immer) Eggshell Thickness and Egg Volume Vary with Acidity of Nest Lake in Northern Wisconsin." Waterbirds 30, no. 3 (2007): 367–74. http://dx.doi.org/10.1675/1524-4695(2007)030[0367:clgiet]2.0.co;2.

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23

Campbell, C. A., F. Selles, W. Nuttall, T. Wright, and H. Ukrainetz. "Effect of nitrogen source, placement and time of application on winter wheat production in Saskatchewan." Canadian Journal of Soil Science 71, no. 2 (1991): 177–87. http://dx.doi.org/10.4141/cjss91-017.

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Saskatchewan producers growing primarily spring-seeded cereals may be interested in diversifying their cropping alternatives. Winter wheat (Triticum aestivum L.) could provide one possible option, but its management could cause conflict with the busy fall and early spring activities for spring-seeded crops. A study was conducted at five sites (Swift Current, 4 yr; Melfort, 4 yr; and Scott, Lashburn, and Loon Lake, 1 yr each) in four soil zones (Brown, Dark Brown, and Black Chernozems and Gray Luvisol). The effect of time of application of N (seeding to early spring), source of N (ammonium nitr

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24

Kenow, Kevin P., Michael W. Meyer, Ronald Rossmann, Brian R. Gray, and Michael T. Arts. "Influence of in ovo mercury exposure, lake acidity, and other factors on common loon egg and chick quality in Wisconsin." Environmental Toxicology and Chemistry 34, no. 8 (2015): 1870–80. http://dx.doi.org/10.1002/etc.3001.

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25

Harpham, Geoffrey Galt. "E. L. Doctorow and the Technology of Narrative." PMLA/Publications of the Modern Language Association of America 100, no. 1 (1985): 81–95. http://dx.doi.org/10.2307/462202.

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The work of E. L. Doctorow is difficult to place on the map of postmodernism because he is equally concerned with narrative or representational technique and with issues of history, power, and identity. Doctorow has focused his concerns in the question of technology, representing in each of his major works technological principles that not only typify the historical epoch in which the novel is set but also characterize the representational mode of the novel itself. The differences among technologies in his novels produce an arc of development that moves from a critique of the coercive power of

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Fluet, D. W., A. Changkakoti, R. D. Morton, J. Gray, and H. R. Krouse. "The genesis of the Deer Trail Zn–Pb–Ag vein deposits, northeast Washington, U.S.A.: evidence from fluid-inclusion and stable-isotope studies." Canadian Journal of Earth Sciences 24, no. 8 (1987): 1715–26. http://dx.doi.org/10.1139/e87-164.

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The Zn–Pb–Ag-bearing vein deposits of the Deer Trail mine, northeastern Washington, U.S.A., are hosted by Beltian metasediments that have been intruded by the Jurassic–Cretaceous Loon Lake granitoid batholith.Vein infilling took place in three stages: pre-ore, ore, and post-ore. Fluid-inclusion studies revealed homogenization temperatures and salinities of approximately 300 °C and 6.5–8.5 wt. % NaCl equivalent, respectively, for the pre-ore stage; 250–150 °C and 4–7.5 wt. % NaCl equivalent for the ore stage; and less than 150 °C and 3 wt. % NaCl equivlent for the post-ore stage. The calculated

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Kabanov, Pavel, and Sofie A. Gouwy. "The Devonian Horn River Group and the basal Imperial Formation of the central Mackenzie Plain, N.W.T., Canada: multiproxy stratigraphic framework of a black shale basin." Canadian Journal of Earth Sciences 54, no. 4 (2017): 409–29. http://dx.doi.org/10.1139/cjes-2016-0096.

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This study proposes six new lithostratigraphic units and redefines two others within the Horn River Group (HRG), a shale-dominated succession recently prospected for shale hydrocarbons. Its lower Hare Indian Formation rests on a drowning unconformity. In the SOB area (the area between Norman Wells and the Keele tectonic zone), this formation consists of the Bluefish black shale, Francis Creek grey shale, and Prohibition Creek black shale members. The latter two are lateral equivalents of the grey shale Bell Creek Member (updated definition) in the northern part of the study area. The overlying

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Alvo, Robert, David J. T. Hussell, and Michael Berrill. "The breeding success of common loons (Gavia immer) in relation to alkalinity and other lake characteristics in Ontario." Canadian Journal of Zoology 66, no. 3 (1988): 746–52. http://dx.doi.org/10.1139/z88-110.

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We examined the breeding success of common loons (Gavia immer) and made observations of loons feeding their young on small lakes (5.3–75 ha) with different alkalinities (−73 to 1804 μequiv./L) near Sudbury, Ontario. Alkalinity, pH, and conductivity were highly correlated with each other. There was a significant positive relationship between successful breeding and alkalinity on 68 lakes surveyed in 1982. Discriminant analysis showed that alkalinity, area, and colour of the lake contributed significantly to discrimination among lakes with successful, unsuccessful, and no breeding attempts. Lack

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Paruk, James D. "Nocturnal Behavior of the Common Loon, Gavia immer." Canadian Field-Naturalist 122, no. 1 (2008): 70. http://dx.doi.org/10.22621/cfn.v122i1.548.

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Very little is known about nocturnal activity of Common Loons (Gavia immer). Knowledge of both diurnal and nocturnal behavior is needed to gain a complete understanding of their ecology. I used night vision light intensifiers to observe nocturnal behaviors of Common Loons. Results were consistent with the hypothesis that, as visual predators, loons would not forage at night and also that they would spend the majority of their time resting (92%). Loons, however, were just as active locomoting (patrolling) during the night as they were during the day. This suggests daily energy budgets need to b

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Earnst, Susan L., Robert A. Stehn, Robert M. Platte, William W. Larned, and Edward J. Mallek. "Population Size and Trend of Yellow-Billed Loons in Northern Alaska." Condor 107, no. 2 (2005): 289–304. http://dx.doi.org/10.1093/condor/107.2.289.

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Abstract The Yellow-billed Loon (Gavia adamsii) is of conservation concern due to its restricted range, small population size, specific habitat requirements, and perceived threats to its breeding and wintering habitat. Within the U.S., this species breeds almost entirely within the National Petroleum Reserve-Alaska, nearly all of which is open, or proposed to be opened, for oil development. Rigorous estimates of Yellow-billed Loon population size and trend are lacking but essential for informed conservation. We used two annual aerial waterfowl surveys, conducted 1986–2003 and 1992–2003, to est

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Girard, Catherine, Valérie Langlois, Adrien Vigneron, Warwick F. Vincent, and Alexander I. Culley. "Seasonal Regime Shift in the Viral Communities of a Permafrost Thaw Lake." Viruses 12, no. 11 (2020): 1204. http://dx.doi.org/10.3390/v12111204.

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Permafrost thaw lakes including thermokarst lakes and ponds are ubiquitous features of Subarctic and Arctic landscapes and are hotspots of microbial activity. Input of terrestrial organic matter into the planktonic microbial loop of these lakes may greatly amplify global greenhouse gas emissions. This microbial loop, dominated in the summer by aerobic microorganisms including phototrophs, is radically different in the winter, when metabolic processes shift to the anaerobic degradation of organic matter. Little is known about the viruses that infect these microbes, despite evidence that viruses

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Kluge, T., J. Ilmberger, C. von Rohden, and W. Aeschbach-Hertig. "Tracing and quantifying groundwater inflow into lakes using a simple method for radon-222 analysis." Hydrology and Earth System Sciences 11, no. 5 (2007): 1621–31. http://dx.doi.org/10.5194/hess-11-1621-2007.

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Abstract. Due to its high activities in groundwater, the radionuclide 222Rn is a sensitive natural tracer to detect and quantify groundwater inflow into lakes, provided the comparatively low activities in the lakes can be measured accurately. Here we present a simple method for radon measurements in the low-level range down to 3 Bq m−3, appropriate for groundwater-influenced lakes, together with a concept to derive inflow rates from the radon budget in lakes. The analytical method is based on a commercially available radon detector and combines the advantages of established procedures with reg

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Kluge, T., J. Ilmberger, C. von Rohden, and W. Aeschbach-Hertig. "Tracing and quantifying groundwater inflow into lakes using radon-222." Hydrology and Earth System Sciences Discussions 4, no. 3 (2007): 1519–48. http://dx.doi.org/10.5194/hessd-4-1519-2007.

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Abstract. Due to its high activities in groundwater, the radionuclide 222Rn is a sensitive natural tracer to detect and quantify groundwater inflow into lakes, provided the comparatively low activities in the lakes can be measured accurately. Here we present a simple method for radon measurements in the low-level range down to 3 Bq m−3, appropriate for groundwater-influenced lakes, together with a concept to derive inflow rates from the radon budget in lakes. The analytical method is based on a commercially available radon detector and combines the advantages of established procedures with reg

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MacIsaac, Hugh J., Igor A. Grigorovich, James A. Hoyle, Norman D. Yan, and Vadim E. Panov. "Invasion of Lake Ontario by the Ponto–Caspian predatory cladoceran Cercopagis pengoi." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 1 (1999): 1–5. http://dx.doi.org/10.1139/f98-210.

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Cercopagis pengoi, a waterflea native to the Ponto-Caspian region, was discovered during 1998 in Lake Ontario. Individuals were found throughout the lake during summer snagged on sportfishing lines. The population included parthenogenetic (92%) and sexual (2%) females and males (6%). Cercopagis has a very long caudal appendage that is more than five times the body length and terminates in a distinctive loop. Females and males from Lake Ontario were significantly smaller than individuals from the Neva Estuary, Baltic Sea. In Eurasia, C. pengoi occurs in relatively warm fresh and brackish waters

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Alemu, Muluken L., Abeyou W. Worqlul, Fasikaw A. Zimale, Seifu A. Tilahun, and Tammo S. Steenhuis. "Water Balance for a Tropical Lake in the Volcanic Highlands: Lake Tana, Ethiopia." Water 12, no. 10 (2020): 2737. http://dx.doi.org/10.3390/w12102737.

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Lakes hold most of the freshwater resources in the world. Safeguarding these in a changing environment is a major challenge. The 3000 km2 Lake Tana in the headwaters of the Blue Nile in Ethiopia is one of these lakes. It is situated in a zone destined for rapid development including hydropower and irrigation. Future lake management requires detailed knowledge of the water balance of Lake Tana. Since previous water balances varied greatly this paper takes a fresh look by calculating the inflow and losses of the lake. To improve the accuracy of the amount of precipitation falling on the lake, tw

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Park, Dong Kyu, and Youngmin Lee. "Numerical Simulations on the Application of a Closed-Loop Lake Water Heat Pump System in the Lake Soyang, Korea." Energies 13, no. 3 (2020): 762. http://dx.doi.org/10.3390/en13030762.

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A lake is one of the geothermal energy sources to meet increasing demands for renewable energy use. In this study, a series of numerical modeling was performed to evaluate the applicability of a close-loop lake water heat pump (LWHP) system in Lake Soyang, Korea. A non-isothermal pipe flow model was used to simulate the flow and heat transfer processes occurring in the LWHP system with the main pipe and several helical tubes for heat exchange. Based on the temperature data measured in the Lake Soyang for 4 years, the installation depth and the number of helical tubes were determined sequential

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Bertolo, Andrea, and Pierre Magnan. "Logging-induced variations in dissolved organic carbon affect yellow perch (Perca flavescens) recruitment in Canadian Shield lakes." Canadian Journal of Fisheries and Aquatic Sciences 64, no. 2 (2007): 181–86. http://dx.doi.org/10.1139/f07-004.

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There is increasing interest in the effects of allochthonous carbon on lake food webs. By temporarily increasing levels of dissolved organic carbon (DOC) in lakes, logging can help us understand how carbon from the watershed could affect lake biota. The goals of this study were to determine whether (i) logging has a significant effect on the abundance of young-of-the-year (YOY) yellow perch (Perca flavescens) in Canadian Shield lakes and (ii) any changes in yellow perch recruitment could be related to increases in nutrients (N and P) and (or) DOC following logging. To do this, we examined 22 C

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Bücker, Matthias, Adrián Flores Orozco, Jakob Gallistl, et al. "Integrated land and water-borne geophysical surveys shed light on the sudden drying of large karst lakes in southern Mexico." Solid Earth 12, no. 2 (2021): 439–61. http://dx.doi.org/10.5194/se-12-439-2021.

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Abstract. Karst water resources play an important role in drinking water supply but are highly vulnerable to even slight changes in climate. Thus, solid and spatially dense geological information is needed to model the response of karst hydrological systems to such changes. Additionally, environmental information archived in lake sediments can be used to understand past climate effects on karst water systems. In the present study, we carry out a multi-methodological geophysical survey to investigate the geological situation and sedimentary infill of two karst lakes (Metzabok and Tzibaná) of th

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Moknatian, Mahrokh, and Michael Piasecki. "Lake Volume Data Analyses: A Deep Look into the Shrinking and Expansion Patterns of Lakes Azuei and Enriquillo, Hispaniola." Hydrology 7, no. 1 (2019): 1. http://dx.doi.org/10.3390/hydrology7010001.

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This paper presents the development of an evenly spaced volume time series for Lakes Azuei and Enriquillo both located on the Caribbean island of Hispaniola. The time series is derived from an unevenly spaced Landsat imagery data set which is then exposed to several imputation methods to construct the gap filled uniformly-spaced time series so it can be subjected to statistical analyses methods. The volume time series features both gradual and sudden changes the latter of which is attributed to North Atlantic cyclone activity. Relevant cyclone activity is defined as an event passing within 80

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Pang, Xinghong, Hong Shen, Yuan Niu, Xiaoxue Sun, Jun Chen, and Ping Xie. "Dissolved organic carbon and relationship with bacterioplankton community composition in 3 lake regions of Lake Taihu, China." Canadian Journal of Microbiology 60, no. 10 (2014): 669–80. http://dx.doi.org/10.1139/cjm-2013-0847.

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To clarify the relationships between dissolved organic carbon (DOC) and bacterioplankton community composition (BCC), a 1-year survey (June 2009 – May 2010) was conducted in 3 regions of Lake Taihu (Meiliang Bay, Lake Center, and Eastern Taihu), China. Polymerase chain reaction – denaturing gradient gel electrophoresis was used to analyze the composition and heterogeneity of the bacterioplankton community. Canonical correspondence analysis was used to explore the relationships between DOC concentration and BCC. We found a significant negative correlation between DOC concentration and bacteriop

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Moknatian, Mahrokh, and Michael Piasecki. "Quo Vadis Lakes Azuei and Enriquillo: A Future Outlook for Two of the Caribbean Basin’s Largest Lakes." Hydrology 8, no. 3 (2021): 107. http://dx.doi.org/10.3390/hydrology8030107.

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Lakes Azuei (LA) and Enriquillo (LE) on Hispaniola Island started expanding in 2005 and continued to do so until 2016. After inundating large swaths of arable land, submerging a small community, and threatening to swallow a significant trade route between the Dominican Republic and Haiti; worries persisted at how far this seemingly unstoppable expansion would go. The paper outlines the approach to a look forward to answer this question vis-à-vis climate change scenarios developed by the Intergovernmental Panel on Climate Change (IPCC). It uses numerical representations of the two lakes, and it

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Taylor, Daniel M. "The Status of Loons in Idaho." Western Birds 52, no. 1 (2021): 47–57. http://dx.doi.org/10.21199/wb52.1.3.

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This report summarizes and updates the population status and distribution of loons in Idaho. Formerly, the Common Loon bred in northern, central, and southeastern Idaho, probably widely. With only sporadic unsustained nesting in the last half century it has been essentially extirpated as a breeding species, but flocks of up to 200 migrating birds occur in spring and autumn. In spring, concentrations are most frequent in southeastern and south-central Idaho, but in autumn they are widespread. Common Loon migration peaks from mid-April to early May and from mid-October to mid-November. The speci

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Abrianto, Octaviadi. "Perahu Pangalengan." PANALUNGTIK 2, no. 1 (2019): 32–42. http://dx.doi.org/10.24164/pnk.v2i1.20.

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People of Warnasari village found an iron boat on the bottom of Situ Cileunca Lake, the boat is made from iron sheets with flat keel. The iron sheets was bound together using iron rivets and the boat have hooks that look like use to attact to other boats. Flat keel boat usually use on calm water such as river or lakes, boat using rivet usually build before 1930’s as after that year boats were build using welding technic. It’s assumed that boat from Situ Cileunca was used for ferrying goods or peoples, the exact function can’t determine precisely due to lack of data.

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Akibu, Rifkah S. "IMPLEMENTASI KEBIJAKAN PENGELOLAAN DANAU LIMBOTO." DIALEKTIKA : Jurnal Ekonomi dan Ilmu Sosial 2, no. 1 (2017): 178–88. http://dx.doi.org/10.36636/dialektika.v2i1.241.

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AbstractThis study aimed to look at the implementation of the Policy Management Limboto Lake,Lake Limboto is an area that the quality of the environment is strongly influenced by thedevelopment activities undertaken by the two regencies / cities, namely Gorontalo regencyand city of Gorontalo, the formulation masaalahnya is 1) how policy implementationregulations management Limboto Lake , 2) Strategy and the concept of what should be doneby the government in the implementation of the management of lake Limboto. Thus, efforts tomengimpelentasikan management Limboto Lake is (1) the restoration of

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Li, Wei, Mircea Podar, and Rachael M. Morgan-Kiss. "Ultrastructural and Single-Cell-Level Characterization Reveals Metabolic Versatility in a Microbial Eukaryote Community from an Ice-Covered Antarctic Lake." Applied and Environmental Microbiology 82, no. 12 (2016): 3659–70. http://dx.doi.org/10.1128/aem.00478-16.

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ABSTRACTThe McMurdo Dry Valleys (MCM) of southern Victoria Land, Antarctica, harbor numerous ice-covered bodies of water that provide year-round liquid water oases for isolated food webs dominated by the microbial loop. Single-cell microbial eukaryotes (protists) occupy major trophic positions within this truncated food web, ranging from primary producers (e.g., chlorophytes, haptophytes, and cryptophytes) to tertiary predators (e.g., ciliates, dinoflagellates, and choanoflagellates). To advance the understanding of MCM protist ecology and the roles of MCM protists in nutrient and energy cycli

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UKRAINETZ, H., C. A. CAMPBELL, R. P. ZENTNER, and M. MONREAL. "RESPONSE OF BROMEGRASS TO N, P AND S FERTILIZER ON A GRAY LUVISOLIC SOIL IN NORTHWESTERN SASKATCHEWAN." Canadian Journal of Plant Science 68, no. 3 (1988): 687–703. http://dx.doi.org/10.4141/cjps88-082.

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A 9-yr study was conducted on a Gray Luvisolic loam at Loon Lake, Saskatchewan to determine the effect of ammonium nitrate-N (34–0–0) and urea-N (46–0–0) on bromegrass (Bromus inermis Leyss.) production and nutrient quality, N recovery, and N use efficiency when the N was applied either annually or as a single application at the start of the experiment. The effects of phosphorus (P) and sulphur (S) were also assessed. Each N source was applied at single rates of 0, 100, 200, 400 and 800 kg ha−1 N and annual rates of 0, 50, 100 and 200 kg ha−1 N. The ammonium nitrate was also applied as a singl

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McIntyre, Judith W. "Loons in freshwater lakes." Hydrobiologia 279-280, no. 1 (1994): 393–413. http://dx.doi.org/10.1007/bf00027871.

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Manfred, Bölter, and Izmestyeva Lyubov R. "Is there a Microbial Loop in Lake Baikal?" Journal of Siberian Federal University. Biology 5, no. 2 (2012): 112–20. http://dx.doi.org/10.17516/1997-1389-0139.

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Shahzad, Muhammad Kashif, Mirza Abdullah Rehan, Muzaffar Ali, et al. "Cooling Performance Assessment of a Slinky Closed Loop Lake Water Heat Pump System under the Climate Conditions of Pakistan." Processes 7, no. 9 (2019): 553. http://dx.doi.org/10.3390/pr7090553.

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This paper presents an experimental evaluation of a closed loop lake water heat pump (LWHPs) system based on the slinky coiled configuration. Initially, a mathematical model is developed in the Engineering Equation Solver (EES) for the heat pump system and the submerged coils in a lake. System performance is determined for the submerged slinky copper coils under the various operating conditions. Afterwards, parametric analysis is performed considering different influencing parameters, such as the lake water temperature, ambient temperature, and mass flow rate of the circulating fluid at consta

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Brown, Culum, Yagiz Aksoy, Hilal Varinli, and Michael Gillings. "Identification of the rainbowfish in Lake Eacham using DNA sequencing." Australian Journal of Zoology 60, no. 5 (2012): 334. http://dx.doi.org/10.1071/zo12106.

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The Lake Eacham rainbowfish (Melanotaenia eachamensis) was once thought to be confined to its type locality within the Lake Eacham World Heritage National Park. M. eachamensis disappeared from the lake following the translocation of several species into the lake and the species was pronounced extinct in the wild in 1987. In a 2007 survey we noticed that rainbowfish were present in the lake once again. We used a molecular marker to identify these fish and the likely source population. Analysis of the D-loop region of mitochondrial DNA revealed that the species now present in the lake is Melanot

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