Indicator value of midge larvae (Diptera: Nematocera) in shallow boreal lakes with a focus on habitat, water quality, and climate

Luoto, Tomi P.

doi:10.1080/01650424.2011.640333

Cited by 13 publications

(6 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This interpretation is in agreement with the preference of the dominating chironomids Procladius and Sergentia for low-oxygen and high-nutrient lakes (Luoto 2011). From ~1850 onwards, the ultraoligotrophic and oxy philous Micropsectra radialis-type (Brooks et al 2007, Luoto 2011 began to dominate following the rapid decline in the abundance of Procladius, Sergentia, and Zavrelimyia (Fig. 4).…”

Section: Discussionsupporting

confidence: 80%

“…Consequently, it is possible that internal loading from the release of nutrients from the anoxic sediments (Auer et al 1993, Sondergaard et al 2001 during the LIA caused nutrient enrichment and oxygen depletion in the hypolimnion. This interpretation is in agreement with the preference of the dominating chironomids Procladius and Sergentia for low-oxygen and high-nutrient lakes (Luoto 2011). From ~1850 onwards, the ultraoligotrophic and oxy philous Micropsectra radialis-type (Brooks et al 2007, Luoto 2011 began to dominate following the rapid decline in the abundance of Procladius, Sergentia, and Zavrelimyia (Fig.…”

Section: Discussionsupporting

confidence: 80%

See 1 more Smart Citation

Climate-driven limnological changes determine ecological thresholds in an alpine lake

Luoto¹,

Nevalainen

2013

Aquat. Biol.

View full text Add to dashboard Cite

The consequences of climate warming may be dramatic in lakes because changes in surface heating can affect physical and biological processes. We examined sedimentary remains of Cladocera and Chironomidae from a climatically sensitive lake in the Austrian Alps to test the hypothesis that changes in surface water temperature cause direct and indirect shifts in species composition. Contrary to the expectation that oxygen availability in lakes generally decreases under climate warming, our records showed that the assemblages experienced a succession towards a state with increased oxygen availability. Among the benthic fauna, an ecological threshold was crossed around the year 1850, when taxa tolerant of low oxygen concentrations disappeared and oxyphilous taxa began to dominate. In the zooplankton community, the keystone grazer Daphnia was replaced by Bosmina. These ecological changes, especially during the past 20 yr, were most likely caused by improved oxygen conditions following the decrease in depth of the thermocline. As the faunal succession was strongly correlated with alpine air temperature trends, the change in thermocline depth has likely been driven by the increasing air temperatures, which have caused warming of the epilimnion and consequently, in combination with wind-induced mixing, deepening of the thermocline. These recent changes occur alongside further increasing alpine temperatures and may be reflected in further deepening of the thermocline. We conclude that, in addition to direct climate influences, changes in summer stratification and mixing depth may cause significant changes in aquatic community compositions through changes in oxygen availability under the present climate warming conditions.

show abstract

Section: Discussionsupporting

confidence: 80%

Section: Discussionsupporting

confidence: 80%

Climate-driven limnological changes determine ecological thresholds in an alpine lake

Luoto¹,

Nevalainen

2013

Aquat. Biol.

View full text Add to dashboard Cite

show abstract

“…The time of warming falls in the uppermost chironomid zone which includes a noticeable decrease in the cold adapted H. maeaeri-type and a simultaneous increase in warm adapted taxa such as P. sordidellus-type, Stempellinella, H. marcidus-type and Heterotanytarsus. Again, the assemblage changes appeared not to be related to a specific limnological change since all the taxa are typical for oligotrophic lakes (Luoto, 2011) suggesting that the assemblage changes reflect climate oscillations.…”

Section: Accepted Manuscriptmentioning

confidence: 86%

Climate variability and lake ecosystem responses in western Scandinavia (Norway) during the last Millennium

Zawiska

Luoto

Nevalainen

et al. 2017

Palaeogeography, Palaeoclimatology, Palaeoecology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The increase in primarily littoral generalists like Tanytarsus spp. could reflect an 334 expansion of littoral habitat, which can occur with increased primary production from cultural 335 eutrophication (Brodersen and Quinlan 2006) and would be consistent with the trends in VRS-336 inferred chlorophyll a. Chaetocladius and Smittia are typically semi-terrestrial to terrestrial 337 chironomid taxa (Luoto 2011), which could indicate shoreline erosion, riverbank erosion, or 338 water level changes. A combination of frequent spring ice jams, flooding, and wake from boat 339 traffic are other factors that could contribute to the presence of semi-terrestrial taxa to the Stoco 340 Lake sediment record.…”

Section: Discussionmentioning

confidence: 78%

Subfossil Simuliidae track past river flow into an industrially contaminated lake

et al. 2020

View full text Add to dashboard Cite

Stoco Lake (Tweed, Ontario, Canada) has a history of industrial contamination and is heavily influenced by inflow from the Moira River. Stoco Lake is frequently affected by nuisance algal blooms (including cyanobacteria), which have largely been attributed to cultural eutrophication.To further our understanding of the environmental dynamics of Stoco Lake, we applied paleolimnological techniques to examine long-term trends in subfossil invertebrate assemblages, geochemistry, and inferred trends in whole-lake primary production from a sediment core representing ~70 years of environmental history. We examined past trends in Simuliidae abundance, geochemical variables, and historical river flow records to examine past hydrological conditions in Stoco Lake. Inferred whole-lake primary production and sediment core organic content increased between the late 1950s and early 1970s, likely reflecting increased eutrophication (e.g. from agricultural intensification and increased catchment activities), with some stabilization in the post-1970s sediments coinciding with the installation of a sewage treatment plant. The geochemical composition of the core highlighted the decrease in catchmentderived sediment inputs and an increase in percentage of organic content towards the top of the core. In addition, declines in the proportion of As and Ni coincided with the closure of the upstream Deloro Mine Site in the 1960s. Chironomidae and Chaoboridae (Diptera) assemblages indicate expansion of littoral habitat after the 1960s and a general stability of low-oxygen conditions in the hypolimnion over the past ~70 years. Several Simuliidae (Diptera: Nematocera) remains, indicators of fluvial conditions rarely discussed in paleolimnological studies, werepresent at their highest abundances in the pre-~1975 sediments of the core, but disappeared after the early 1990s. Our findings suggest that changes in river flow (discharge, velocity, or seasonality) may have contributed to recent algal blooms. Overall, this study highlights the 3 potential of Simuliidae in paleohydrological studies to help understand the role of river flow on 42 lake conditions.

show abstract

Indicator value of midge larvae (Diptera: Nematocera) in shallow boreal lakes with a focus on habitat, water quality, and climate

Cited by 13 publications

References 50 publications

Climate-driven limnological changes determine ecological thresholds in an alpine lake

Climate-driven limnological changes determine ecological thresholds in an alpine lake

Climate variability and lake ecosystem responses in western Scandinavia (Norway) during the last Millennium

Subfossil Simuliidae track past river flow into an industrially contaminated lake

Contact Info

Product

Resources

About