Determinants of temperature in small coastal embayments of Lake Ontario

Murphy, Shidan C.; Collins, Nicholas C.; Doka, Susan E.

doi:10.1016/j.jglr.2012.09.011

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…Studies on smallmouth bass (Micropterus dolomieu Lacepède, 1802) revealed that July temperatures of <15°C restricted young-of-the-year individuals from achieving a required body size needed to overwinter, preventing the sustainability of the species (Shuter et al 1980). Specifically, within Toronto Harbour, previous work using bioenergetic simulations suggested that for bluegill (Lepomis macrochirus Rafinesque, 1819) many embayments were too cool for sufficient summer growth and that these habitats may act as ecological sinks during cooler years (Murphy et al 2012a(Murphy et al , 2012b(Murphy et al , 2012c. Thus, behavioural thermoregulation of northern pike and largemouth bass in Toronto Harbour is likely an adaptive response to avoid temperatures that limit growth potential.…”

Section: Species-specific and Seasonal Aspects Of Thermoregulation Inmentioning

confidence: 99%

“…Additionally, the superposition of Poincaré waves (mean amplitudes of 4 m) may have an important modulation effect on major thermocline oscillations and increase thermal variability especially in the more exposed half of the Outer Harbour (Hlevca et al 2015). Temperature fluctuations caused by lake-embayment exchanges have been identified as a major factor contributing to habitat suitability (Murphy et al 2011), fish distribution, and adequate growing seasons (Murphy et al 2012a(Murphy et al , 2012b(Murphy et al , 2012c for warm-water fish species. Populations of yellow perch (Perca flavescens (Mitchill, 1814)), largemouth bass, and pumpkinseed (Lepomis gibbosus (L., 1758)) have been shown to move among embayments, effectively creating a metapopulation and allowing individuals to compensate for variations in the thermal habitat of different embayments in Toronto Harbour that would otherwise act as ecological traps (Murphy et al 2012a(Murphy et al , 2012b(Murphy et al , 2012c.…”

Section: Introductionmentioning

confidence: 99%

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Comparative thermal biology and depth distribution of largemouth bass (Micropterus salmoides) and northern pike (Esox lucius) in an urban harbour of the Laurentian Great Lakes

et al. 2016

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Understanding how individuals are distributed in space and time, as well as how they interact with dynamic environmental conditions, represent fundamental knowledge gaps for many fish species. Using acoustic telemetry tags, we monitored the temperatures and depths used by northern pike (Esox lucius L., 1758) and largemouth bass (Micropterus salmoides (Lacepède, 1802)) in Toronto Harbour (Lake Ontario). Northern pike and largemouth bass had similar thermal experiences throughout the year, except during summer, when northern pike were observed in cooler waters than largemouth bass. Both species used different depths throughout the year, with northern pike occupying deeper depths. Statistical modelling indicated that depth usage was influenced by all variables (season, species, and body size) and interactions between them, whereas thermal preferences were influenced by the main effects and interactions between species:season and species : body size. Both species were observed at temperatures warmer than those in the vicinity of nearby telemetry stations, but as station temperatures exceeded 20 °C, northern pike moved into cooler water, indicating active thermoregulation. These data will be useful for refining our understanding of the spatial ecology of fish and for informing fisheries and habitat management in this and other urban harbours of the Laurentian Great Lakes.

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Section: Species-specific and Seasonal Aspects Of Thermoregulation Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative thermal biology and depth distribution of largemouth bass (Micropterus salmoides) and northern pike (Esox lucius) in an urban harbour of the Laurentian Great Lakes

et al. 2016

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“…Most of the studies, especially unpublished papers of the French authorities, are focused on the temperature continuum stream-pond-stream, without knowing the heat content behaviour inside the pond. In lake's study, the horizontal scale getting more important and some studies took spatial measurements about great lakes (Xing et al, 2012;Wang et al, 2014), the embayment of lakes, especially about lake Ontario (Rueda & Cowen, 2005;Murphy et al, 2012) or also about a big mire system (Ramos, 2012), without taking into consideration the ponds, where the application should be the most achievable. It is a very important point regarding the ponds, where it is possible to choose the depth of the outflow (monk, weir…) or to change the localization of the outfall in order to decrease the temperature's impact on downstreams.…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial variations in heat content of a French pond

Choffel¹,

Touchart²,

Bartout³

et al. 2017

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ABSTRACT:Ponds are regarded as small waterbodies with a depth of less than 6m and an area of less than 100 ha. In the Limousine region (France), they usually bar small incised valleys, giving them a complex morphology. This morphology may separate the pond in several basins, as for the pond of La Ramade (45°47'04.3"N; 2°25'30.7''E), theoretically suitable for a spatial variation of temperature. The pond has been implemented with 4 moorings chains composed of automatic thermistors, measuring the temperature every hour from the surface to the bottom. A meteorological station has been deployed close to the pond, in order to gather very precise meteorological information, in addition to the map of fetch and bathymetry. The working hypothesis is that even small waterbodies present a spatial heterogeneity of water temperature, so that the classic measurements only at one point give approximate values. The aim is to get a 3D overview of the thermal dynamic of a small waterbody for the purpose of a better understanding of its temperature dynamic, with heat content's approach. In polymictic waterbody, the temporal but as well spatial variations of the heat content are together numerous and varied. The first results bring us the autonomous function of the bays and sheltering places, while the open water has a predictable function. Some parameters such as the fetch, the sheltering by vegetation or the bathymetry plays a more or less important role in the particularity of each basin. The heat content's methodology shall be improved by consideration of the spatial variation of the pond's temperature.

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