Relationship Between Environmental Temperature and Yields of Subarctic and Temperate Zone Fish Species

Schlesinger, David A.; Regier, Henry A.

doi:10.1139/f83-212

Cited by 23 publications

(22 citation statements)

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“…The MEI is calculated as the total dissolved solids divided by the mean depth. A similar approach was used by Schlesinger and Regier (1983) to evaluate effects of environmental temperatures on the yields of subarctic and temperate fishes in North America. These authors developed a number of models of the form log 10 MSY = aTEMP + blog 10 MEI + c , where MSY is the maximum sustainable yield, TEMP is the mean annual air temperature, MEI is calculated as above, and a, b, and c are constants.…”

Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

“…Box 14.1 describes an example of using environmental data, fish yield regression equations, and temperature increase estimates to assess the impact of climate change on eastern Canadian lake fish yields. Minns and Moore (1992) used existing environmental data, fish yield regression equations developed by Schlesinger and Regier (1983), and climate model estimates of air temperature increase to estimate the effects of climate change on the spatial distribution of fish yield capability in eastern Canada.…”

Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

“…The fish yield regression equations of Schlesinger and Regier (1983) for lake whitefish, northern pike, and walleye were used to estimate yields of these species for current and estimated temperature regimes by watershed. The yield and species distribution maps were then combined to form a regional model estimating the spatial distribution of yield capability in eastern Canada with and without climate change.…”

Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

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Temperature Mediated Moose Survival in Northeastern Minnesota

et al. 2009

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The earth is in the midst of a pronounced warming trend and temperatures in Minnesota, USA, as elsewhere, are projected to increase. Northern Minnesota represents the southern edge to the circumpolar distribution of moose (Alces alces), a species intolerant of heat. Moose increase their metabolic rate to regulate their core body temperature as temperatures rise. We hypothesized that moose survival rates would be a function of the frequency and magnitude that ambient temperatures exceeded the upper critical temperature of moose. We compared annual and seasonal moose survival in northeastern Minnesota between 2002 and 2008 with a temperature metric. We found that models based on January temperatures above the critical threshold were inversely correlated with subsequent survival and explained >78% of variability in spring, fall, and annual survival. Models based on late‐spring temperatures also explained a high proportion of survival during the subsequent fall. A model based on warm‐season temperatures was important in explaining survival during the subsequent winter. Our analyses suggest that temperatures may have a cumulative influence on survival. We expect that continuation or acceleration of current climate trends will result in decreased survival, a decrease in moose density, and ultimately, a retreat of moose northward from their current distribution.

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Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

Section: Assessing the Effects Of Temperature Changes On Fish Yield Imentioning

confidence: 99%

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Temperature Mediated Moose Survival in Northeastern Minnesota

et al. 2009

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“…For example, there is no relation between temperature and yield in Canadian lakes (Schlesinger and Regier, 1982). Schlesinger and Regier (1983) suggest that this is a result of lakes having ®sh species with dierent thermal optima. Hence, although the yield of individual species does vary with temperature, there are trade-os so that the aggregate is independent of temperature.…”

Section: Secondary Productionmentioning

confidence: 99%

Effects of Climate Change on the Freshwaters of Arctic and Subarctic North America

et al. 1997

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Region 2 comprises arctic and subarctic North America and is underlain by continuous or discontinuous permafrost. Its freshwater systems are dominated by a low energy environment and cold region processes. Central northern areas are almost totally in¯uenced by arctic air masses while Paci®c air becomes more prominent in the west, Atlantic air in the east and southern air masses at the lower latitudes. Air mass changes will play an important role in precipitation changes associated with climate warming. The snow season in the region is prolonged resulting in long-term storage of water so that the spring¯ood is often the major hydrological event of the year, even though, annual rainfall usually exceeds annual snowfall. The unique character of ponds and lakes is a result of the long frozen period, which aects nutrient status and gas exchange during the cold season and during thaw. GCM models are in close agreement for this region and predict temperature increases as large as 48C in summer and 98C in winter for a 2 Â CO 2 scenario. Palaeoclimate indicators support the probability that substantial temperature increases have occurred previously during the Holocene. The historical record indicates a temperature increase of 418C in parts of the region during the last century. GCM predictions of precipitation change indicate an increase, but there is little agreement amongst the various models on regional disposition or magnitude. Precipitation change is as important as temperature change in determining the water balance. The water balance is critical to every aspect of hydrology and limnology in the far north. Permafrost close to the surface plays a major role in freshwater systems because it often maintains lakes and wetlands above an impermeable frost table, which limits the water storage capabilities of the subsurface. Thawing associated with climate change would, particularly in areas of massive ice, stimulate landscape changes, which can aect every aspect of the environment. The normal spring¯ooding of ice-jammed north-¯owing rivers, such as the Mackenzie, is a major event, which renews the water supply of lakes in delta regions and which determines the availability of habitat for aquatic organisms. Climate warming or river damming and diversion would probably lead to the complete drying of many delta lakes. Climate warming would also change the characteristics of ponds that presently freeze to the bottom and result in fundamental changes in their limnological characteristics. At present, the food chain is rather simple usually culminating in lake trout or arctic char. A lengthening of the growing season and warmer water temperature would aect the chemical, mineral and nutrient status of lakes and most likely have deleterious eects on the food chain. Peatlands are extensive in region 2. They would move northwards at their southern boundaries, and, with sustained drying, many would change form or become inactive. Extensive wetlands and peatlands are an important component of the global carbon budget, and warm...

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“…These general approaches have been identified by some researchers as the basic framework for evaluating climate change impacts to fisheries resources (Regier & Meisner 1990. Studies that have evaluated potential impacts of Meisner (1990) Fish yields Fish yield regression model Schlesinger & Regier (1982& Regier ( , 1983 Physiology, growth, Arrhenius models of process-response relationships (Schlesinger & Regier 1982, 1983. Although many of these studies were not conducted specifically to evaluate potential climate change impacts, they represent a fourth approach for evaluating the effects of climate change on fish resources.…”

Section: Current Approaches For Assessing the Effects Of Climate Chanmentioning

confidence: 99%

Methods for assessing the vulnerability of African fisheries resources to climate change

Hlohowskyj¹,

Brody²,

Lackey³

1996

Clim. Res.

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Because of the dietary and financial importance of fisheries resources in many African countries, concerns have been expressed regarding the potential for adverse impacts to fisheries resources from clunate change, and a need has been ~dentified for assessment tools that can evaluate the potential for impacts in a timely and cost-effective manner. This paper presents a framework and set of methods for assessing the potential effects of climate change on fisheries resources in Africa. The framework identifies the need to first link predicted climate changes to changes in the aquatic environment, and only then can potential impacts to aquatic resources be evaluated. The approach developed for Africa was constrained by several factors, including availability of existing data and assessment technologies, and the need for a rapid evaluation of potential climate impacts. The assessment approach employs a variety of methods including empirical models which predict changes in mortality, maximum sustainable yield, and yearly catch, a bioenergetics model, and a habitat suitability model. Previously developed or newly derived site-specific empirical models can be used to compare mortality, yield, and annual catch estimates among historic, current, and predicted climate conditions. Similarly, bioenergetics modeling can be used to compare growth rates and biomass production among different climate conditions. Habitat suitability models can be developed for current climate conditions, and the effects of changes in climate-driven habitat variables such as water depth, temperature, and current veloc~ty on habitat suitability can be evaluated for different climate conditions. Use of these approaches is recommended because they can utilize existing ecological data and do not require extensive new data collection activities, they are not technologically complex, and they can provide evaluations of potential climate change impacts in a timely and cost-effect~ve manner.

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Relationship Between Environmental Temperature and Yields of Subarctic and Temperate Zone Fish Species

Cited by 23 publications

References 0 publications

Temperature Mediated Moose Survival in Northeastern Minnesota

Temperature Mediated Moose Survival in Northeastern Minnesota

Effects of Climate Change on the Freshwaters of Arctic and Subarctic North America

Methods for assessing the vulnerability of African fisheries resources to climate change

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