Climate control of the spring clear‐water phase through the transfer of energy and mass to lakes

Dröscher, Iris; Patoine, Alain; Finlay, Kerri; Leavitt, Peter R.

doi:10.4319/lo.2009.54.6_part_2.2469

Cited by 47 publications

(87 citation statements)

References 51 publications

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“…We suggest that lakes respond to environmental and anthropogenic forcing by integrating influxes of E and m, as proposed originally by Pham et al (2008Pham et al ( , 2009 and developed further by Drö scher et al (2009). General circulation models demonstrate that climate variability ultimately arises from the influx of solar E to Earth, its effects on the transfer of surface waters to the atmosphere, and changes in planetary patterns of E and water distribution.…”

Section: Lakes As Integrators Of Energy (E) and Mass (M) Influxmentioning

confidence: 99%

“…heat capacity (Drö scher et al 2009). Such high spatial synchrony arises because E transfers associated with solar and thermal influx are relatively uniform over broad geographic areas (Whitfield et al 2002;Drö scher et al 2009), whereas m transfer associated with precipitation, runoff, and groundwater is more spatially variable (Walker et al 1995;Quiring and Papakyriakou 2005) and reduces temporal coherence among lakes (Pham et al 2008(Pham et al , 2009Drö scher et al 2009).…”

Section: Lakes As Integrators Of Energy (E) and Mass (M) Influxmentioning

confidence: 99%

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Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans

Leavitt

Fritz

Anderson

et al. 2009

Limnology & Oceanography

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The premise of this article is that climate effects on lakes can be quantified most effectively by the integration of process-oriented limnological studies with paleolimnological research, particularly when both disciplines operate within a common conceptual framework. To this end, the energy (E)-mass (m) flux framework (Em flux) is developed and applied to selected retrospective studies to demonstrate that climate variability regulates lake structure and function over diverse temporal and spatial scales through four main pathways: rapid direct transfer of E to the lake surface by irradiance, heat, and wind; slow indirect effects of E via changes in terrestrial development and subsequent m subsidies to lakes; direct influx of m as precipitation, particles, and solutes from the atmosphere; and indirect influx of water, suspended particles, and dissolved substances from the catchment. Sedimentary analyses are used to illustrate the unique effects of each pathway on lakes but suggest that interactions among mechanisms are complex and depend on the landscape position of lakes, catchment characteristics, the range of temporal variation of individual pathways, ontogenetic changes in lake basins, and the selective effects of humans on m transfers. In particular, preliminary synthesis suggests that m influx can overwhelm the direct effects of E transfer to lakes, especially when anthropogenic activities alter m subsidies from catchments.The structure and function of lake ecosystems is regulated by complex interactions among climate, humans, ecosystem morphology, and catchment characteristics, each of which varies in time and space (Schindler 2001). For example, climatic controls range from daily meteorological variations in local irradiance, temperature, and water fluxes (Keller 2007) through to large-scale interactions of the atmosphere and oceans (Trenberth and Hurrell 1994;Hurrell 1995;Mantua et al. 1997) and millennium-long changes in energy (E) and mass (m) flux around the planet (Williams et al. 1997;Diffenbaugh et al. 2006). Within this framework, chemical, physical, and ecological processes combine to determine the production and composition of aquatic communities, both uniquely and in consort with other mechanisms (Carpenter 1999). In addition, lakes are affected both by human disturbance of biotic communities and biogeochemical cycles (e.g., land use, urbanization, fisheries management) and by creation of novel stressors (e.g., acidic precipitation, toxicants, ozone loss). However, because these factors interact over diverse spatial and temporal scales, it is difficult to determine the relative importance of regulatory processes using only traditional site-based observation and experimentation. Instead, it is the premise of this article that the combined use of limnology and paleoecology represents the best means to quantify and scale interactions between climate and other control mechanisms and to develop a hierarchical understanding of how these regulatory processes are likely to influence lakes pres...

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Section: Lakes As Integrators Of Energy (E) and Mass (M) Influxmentioning

confidence: 99%

Section: Lakes As Integrators Of Energy (E) and Mass (M) Influxmentioning

confidence: 99%

Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans

Leavitt

Fritz

Anderson

et al. 2009

Limnology & Oceanography

Self Cite

172

174

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

“…For example, C export to rivers was measured using digital morphometric maps (Drö scher et al 2009), daily estimates of river discharge, and biweekly determinations of DOC, DIC, and POC content of each lake. As we demonstrated earlier with similar whole-lake budgets of nitrogen and energy, this temporal resolution is sufficient to capture all significant seasonal variability in lake chemistry and pelagic community composition Drö scher et al 2009). Similarly, summer fluxes of CO 2 are believed to be well constrained for Qu'Appelle lakes because these net CO 2 fluxes are regulated mainly by seasonal and interannual changes in pH, rather than more difficult to measure changes in DIC, temperature, wind speed, or microbial metabolism ).…”

Section: Discussionmentioning

confidence: 99%

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Magnitudes and controls of organic and inorganic carbon flux through a chain of hard‐water lakes on the northern Great Plains

Finlay

Leavitt

Patoine

et al. 2010

Limnology & Oceanography

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Whole-lake carbon (C) mass-balance budgets were constructed for a chain of six hard-water lakes to quantify the relative importance of organic carbon (OC) and inorganic carbon (IC) exchanges between atmosphere, water column, sediments, and rivers. Mean summer C fluxes were calculated for each lake during the ice-free periods (May to September) of 1995-2007 by measuring deposition of IC and OC in lake sediments, export of C to outflow rivers, lotic C influxes, and atmospheric exchange of CO 2 . Unlike soft-water lakes, IC in rivers accounted for 68.2-85.6% of total C (TC) influx to these hard-water lakes, CO 2 efflux accounted for 0-44.5% of total C export (median 2.8%), and sedimentation buried similar amounts of OC and IC. Deposition of C in sediments accounted for 1.8-61.7% of total export and was correlated to water residence time, while C efflux through rivers accounted for 32.6-98.2% of total export, mainly as IC (69.6-85.1% of TC). Unexpectedly, estimates of net ecosystem production based on OC mass balances suggested that all lakes were autotrophic (production . respiration) during summer, despite elevated dissolved organic carbon content (5.6-16.1 mg C L 21 ), pCO 2 values, and net CO 2 emissions to the atmosphere from three lakes. We conclude that C fluxes within and among these hard-water lakes are regulated by hydrologic inputs of dissolved IC rather than by lake metabolism, IC and OC pathways are only loosely coupled, and future climate variability will alter C fluxes in similar lakes mainly through regulation of mass transfer from land.

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“New” cyanobacterial blooms are not new: two centuries of lake production are related to ice cover and land use

Ewing

Weathers

Cottingham³

et al. 2020

Ecosphere

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Recent cyanobacterial blooms in otherwise unproductive lakes may be warning signs of impending eutrophication in lakes important for recreation and drinking water, but little is known of their historical precedence or mechanisms of regulation. Here, we examined long-term sedimentary records of both general and taxon-specific trophic proxies from seven lakes of varying productivity in the northeastern United States to investigate their relationship to historical in-lake, watershed, and climatic drivers of trophic status. Analysis of fossil pigments (carotenoids and chlorophylls) revealed variable patterns of past primary production across lakes over two centuries despite broadly similar changes in regional climate and land use. Sediment abundance of the cyanobacterium Gloeotrichia, a large, toxic, nitrogen-fixing taxon common in recent blooms in this region, revealed that this was not a new taxon in the phytoplankton communities but rather had been present for centuries. Histories of Gloeotrichia abundance differed strikingly across lakes and were not consistently associated with most other sediment proxies of trophic status. Changes in ice cover most often coincided with changes in fossil pigments, and changes in watershed land use were often related to changes in Gloeotrichia abundance, although no single climatic or land-use factor was associated with proxy changes across all seven lakes. The degree to which changes in lake sediment records co-occurred with changes in the timing of ice-out or agricultural land use was negatively correlated with the ratio of watershed area to lake area. Thus, both climate and land management appeared to play key roles in regulation of primary production in these lakes, although the manner in which these factors influenced lakes was mediated by catchment morphometry. Improved understanding of the past interactions between climate change, land use, landscape setting, and water quality underscores the complexity of mechanisms regulating lake and cyanobacterial production and highlights the necessity of considering these interactions-rather than searching for a singular mechanism-when evaluating the causes of ongoing changes in low-nutrient lakes.

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Climate control of the spring clear‐water phase through the transfer of energy and mass to lakes

Cited by 47 publications

References 51 publications

Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans

Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans

Magnitudes and controls of organic and inorganic carbon flux through a chain of hard‐water lakes on the northern Great Plains

“New” cyanobacterial blooms are not new: two centuries of lake production are related to ice cover and land use

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