Response of poikilotherms to thermal aspects of climate change

Culos, G.J.; Tyson, Richard V.

doi:10.1016/j.ecocom.2014.09.003

Cited by 14 publications

(11 citation statements)

References 48 publications

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“…Potential effect of the global warming on the dynamics of populations, communities and ecosystems [15,25,51], terrestrial as well as aquatic [27,63], has been an issue of a vigorous discussion recently. The focus of attention has usually been on the population dynamics to address the possibility of extinction or invasion of particular species [6,14] and/or possible changes in the community structure [7,49].…”

Section: Discussionmentioning

confidence: 99%

“…In our model (19-21) (or (13)(14)(15) in the original dimensional variables), the rate of oxygen production is quantified by parameter A. In order to reflect the effect of temperature T on photosynthesis, A becomes a function of T .…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…Since Eqs. (13)(14)(15) will mostly be studied by simulations, it is convenient to introduce dimensionless variables. Let us consider…”

Section: Main Equationsmentioning

confidence: 99%

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Mathematical Modelling of Plankton–Oxygen Dynamics Under the Climate Change

2015

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Abstract. Ocean dynamics is known to have a strong effect the global climate change and on the composition of the atmosphere. In particular, it is estimated that about 70% of the atmospheric oxygen is produced in the oceans due to the photosynthetic activity of phytoplankton. However, the rate of oxygen production depends on water temperature and hence can be affected by the global warming. In this paper, we address this issue theoretically by considering a model of a coupled plankton-oxygen dynamics where the rate of oxygen production slowly changes with time to account for the ocean warming. We show that a sustainable oxygen production is only possible in an intermediate range of the production rate. If, in the course of time, the oxygen production rate becomes too low or too high, the system's dynamics changes abruptly resulting in the oxygen depletion and plankton extinction. Our results indicate that the depletion of atmospheric oxygen on global scale (which, if happens, obviously can kill most of life on Earth) is another possible catastrophic consequence of the global warming, a global ecological disaster that has been overlooked.

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Section: Discussionmentioning

confidence: 99%

Section: Numerical Simulationsmentioning

confidence: 99%

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Mathematical Modelling of Plankton–Oxygen Dynamics Under the Climate Change

2015

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“…While a range of factors underlie regional differences in population dynamics (Bjørnstad et al, 1995(Bjørnstad et al, , 2010Hanski et al, 1991), climate varies regionally and for many species there is a direct relationship between environmental variables and life history characteristics, including the timing of oviposition and voltinism (Powell and Logan, 2005;Culos and Tyson, 2014), which will affect population dynamics. Recent studies have parameterized the temperature dependencies of fecundity, mortality, and maturation rates to predict the population dynamics of tea tortix (Adoxophyes honmai; Nelson et al 2013), mosquitoes (Culex pipiens; Ewing et al 2016), biting midges (Culicoides sp.…”

Section: Introductionmentioning

confidence: 99%

Regional climate affects salmon lice dynamics, stage structure, and management

Hurford

Wang

Zhao

2019

Preprint

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Regional variation in climate can generate differences in population dynamics and stage structure. Where regional differences exist, the best approach to pest management may be region specific. Salmon lice are a stage structured marine copepod that parasitizes salmonids at aquaculture sites worldwide, and have fecundity, development, and mortality rates that depend on temperature and salinity. We show that in Atlantic Canada and Norway, where the oceans are relatively cold, salmon lice abundance decreases during the winter months, but ultimately increases from year-to-year, while in Ireland and Chile, where the oceans are warmer, the population size grows monotonically without any seasonal declines. In colder regions, during the winter the stage structure is dominated by the adult stage, which is in contrast to warmer regions where all stages are abundant year round. These differences translate into region specific recommendations for management: regions with slower population growth have lower critical stocking densities, and regions with cold winters have a seasonal dependence in the timing of follow-up chemotherapeutic treatments. Predictions of our salmon lice model agree with empirical data, and our approach provides a method to understand the effects of regional differences in climate on salmon lice dynamics and management.

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“…assemblages of free-living organisms, especially ectotherms responding directly to changes in ambient temperature (Culos & Tyson, 2014), but also parasites, which are an inherent element of all biocenoses (Barber, Berkhout, & Ismail, 2016;Hatcher & Dunn, 2011). One of the most significant disturbances of the aquatic environment is thermal pollution defined as an excessive raising or lowering of water temperature above or below normal seasonal ranges (Gangstad, 2017).…”

mentioning

confidence: 99%

Different thermal conditions of lakes affect host–parasite systems: A case study of Viviparus contectus (Millet, 1813) and digenean trematodes

et al. 2019

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Thermal disturbance of aquatic ecosystems directly and/or indirectly affects interspecific interactions, including parasitism. Both hosts and parasites respond differently to environmental changes, thus, predicting how host–parasite systems behave under the influence of disturbance remains a challenge. The aim of the study was to check how the differences in thermal conditions of lakes affect life‐history traits of hosts and the level of parasitism, using a Viviparus contectus–digenean trematodes model. Overall, we examined 480 individuals of V. contectus collected from a thermally polluted lake (TPL) and a natural lake (NL). Host features, including body size and fecundity, as well as the prevalence and species richness of digenean trematodes in snail populations were investigated. We found that V. contectus from the TPL were significantly larger, heavier, and females were more fertile than snails collected from the NL. A total of 20.4% of the collected snails were infected with digenean larvae. The species richness of parasites was twice as high in the NL compared to the TPL (six and three species, respectively). A significant difference in the percentage of snails infected with parasites was identified between both types of lakes, with a higher prevalence of V. contectus in the NL (31.3%) compared to the TPL (7.3%). These results indicate that host–parasite systems follow the environmental changes in lakes due to thermal pollution by increasing fertility and metabolism rate of viviparid hosts and by decreasing the prevalence and diversity of digenean trematodes.

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Response of poikilotherms to thermal aspects of climate change

Cited by 14 publications

References 48 publications

Mathematical Modelling of Plankton–Oxygen Dynamics Under the Climate Change

Mathematical Modelling of Plankton–Oxygen Dynamics Under the Climate Change

Regional climate affects salmon lice dynamics, stage structure, and management

Different thermal conditions of lakes affect host–parasite systems: A case study of Viviparus contectus (Millet, 1813) and digenean trematodes

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