Palaeolimnological analyses as information source for large lake biomonitoring

Simola, Heikki; Meriläinen, Jarmo J.; Sandman, Olavi; Marttila, Virpi; Karjalainen, Heli; Kukkonen, Minna; Julkunen‐Tiitto, Riitta; Hakulinen, Johanna

doi:10.1007/978-94-009-1655-5_44

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…Depth has been identified as an important factor explaining the distribution of chironomids in many other training sets (e.g., Olander et al 1997;Quinlan et al 1998;Porinchu et al 2002). Taxa such as Micropsectra, Heterotrissocladius subpilosus, and H. brundini are restricted to deep lakes or to the profundal zones (Walker 1990;Walker and MacDonald 1995;Simola et al 1996). These taxa were also found in deeper lakes in our training set.…”

Section: Depthmentioning

confidence: 80%

Factors influencing the distribution of chironomids in lakes distributed along a latitudinal gradient in northwestern Quebec, Canada

Larocque¹,

Pienitz²,

Rolland³

2006

Can. J. Fish. Aquat. Sci.

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The effect of 33 environmental variables on the distribution of chironomids was studied in 60 lakes of northwestern Quebec (Canada). A detrended canonical correspondence analysis detected linearity in the chironomid assemblages, thus redundancy analysis was used to identify the variables affecting the chironomid communities. Lake depth, dissolved organic carbon (DOC), mean August air temperature, and surface water temperature were the four variables that best explained the distribution of chironomids. Partial least squares analysis was used to develop new inference models. Among models, the one for mean August air temperature had the highest coefficient of determination (r[Formula: see text] = 0.67) and the lowest root mean square error of prediction (= 1.17 °C). The results indicated that for downcore temperature reconstructions, it might be hard to dissociate the combined effects of temperature, DOC, and depth. Changes in taxa such as Heterotrissocladius brundini-type, Heterotrissocladius subpilosus-type, Heterotrissocladius grimshawi-type, Micropsectra radialis-type, Tanytarsus lugens-type, and Microtendipes can be attributed to changes in lake depth and (or) temperature. Changes in Heterotanytarsus, Dicrotendipes, Cryptotendipes, and Cryptochironomus might be attributed to shifts in temperature and DOC. Relationships among temperature, DOC, and lake depth should be studied in a "neo-ecology" design to better understand their impact on chironomid assemblage composition.

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Section: Depthmentioning

confidence: 80%

Factors influencing the distribution of chironomids in lakes distributed along a latitudinal gradient in northwestern Quebec, Canada

Larocque¹,

Pienitz²,

Rolland³

2006

Can. J. Fish. Aquat. Sci.

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“…The most abundant, H. subpilosus-group, was also abundantly found in another lake on Southampton Island (Rolland et al, 2008). This strictly profundal (Simola et al, 1996) lake dweller had a more or less constant concentration throughout the core. Physiologically, chironomids rely upon their living substrata, which must be suitable for their biological requirements (Armitage, 1995).…”

Section: Chironomidsmentioning

confidence: 91%

“…The most abundant taxa (N20 HC/g) were Corynoneura and Micropsectra radialis-type. The other abundant taxa (up to 20 HC/g) were Orthocladius and Cricotopus, which are often associated with the littoral zone, aquatic plants and more productive environments (Oliver and Roussel, 1983;Simola et al, 1996). This event also corresponded to a short appearance of Diamesa which lives in running/lotic waters but is also known to feed on algae in lakes (Oliver and Roussel, 1983).…”

Section: Chironomid Stratigraphymentioning

confidence: 99%

Evidence for a warmer period during the 12th and 13th centuries AD from chironomid assemblages in Southampton Island, Nunavut, Canada

et al. 2009

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This study presents the Late-Holocene evolution of a northern Southampton Island (Nunavut, Canada) lake, using fossil chironomids supported by sedimentological evidences (XRF, grain size and CNS). All proxies revealed a relatively stable environment during the last millennium with short-lived events driving changes in the entire lake ecosystem. The chironomid-based paleotemperatures revealed variations of significant amplitude coincident with changes in the sediment density and chemical composition of the core. Higher temperature intervals were generally correlated to lower sediment density with higher chironomid concentration and diversity. Higher temperatures were recorded from cal yr AD 1160 to AD 1360, which may correspond to the Medieval Warm Period. Between cal yr AD 1360 and AD 1700, lower temperatures were probably related to a Little Ice Age event. This study presents new information on the timing of known climatic events which will refine our knowledge of the paleoclimate and climatic models of the Foxe Basin region. It also provides a new framework for the evolution of such freshwater ecosystems under the “Anthropocene” and underlines the importance of including sedimentological proxies when interpreting chironomid remains as this combined approach provides an extended overview of the past hydrological and geochemical changes and their impacts on lake biota.

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“…Throughout this decade, Chironomus has fallen to its minimum relative abundance. Several authors (e.g., Wiederholm & Eriksson 1979;Schakau 1990;Räsänen et al 1992;Meriläinen & Hamina 1993;Salonen et al 1993;Walker 1995;Simola et al 1996) have interpreted the increase of Chironomus species as an enrichment/eutrophication phase. However, no trophic changes have been observed during recent years in Lake Cimera, as revealed by analysis of fossil pigments and nutrients deposition (Lami 2000, this issue).…”

Section: Ecological Interpretation and Temperature Reconstructionmentioning

confidence: 99%

Recent warming in a high mountain lake (Laguna Cimera, Central Spain) inferred by means of fossil chironomids

Granados¹,

Toro²

2000

J Limnol

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Lake Cimera (Lat. 40°15'50'' N; Long. 05°18'15" W, Zmax = 9.4m, A = 4.5 ha, 2140 m a.s.l,) is one of the most remote and unpolluted high mountain lakes on the Sierra de Gredos (Central Spain). Intrannual and interannual variability in maximum water temperature and winter oxygen depletion can be related to climate variability (mainly air temperature), through controlling ice cover length. The extent of the oxygen depletion during ice cover period, which is related to this ice cover length, is a key factor controlling the relative abundance of chironomid (Diptera: Insecta) taxa, especially the low oxygen content adapted Chironomus sp. In this way, we have found a high negative correlation between the relative abundance of Chironomus head capsules in the sediment and the reconstructed air temperature in the last 200 years (n = 20, r = -0.75, p <0.001). The interpretation of such relationship throughout the fossil chironomid assemblage points to a recent warming (since ca mid 1980s) in Lake Cimera. The ecological interpretation of other taxa also supports this view. When applying to fossil chironomids of Lake Cimera the transfer functions developed to reconstruct summer past temperatures in the Alps, it is also well correlated with reconstructed air temperatures (n = 20, r = 0.45, p <0.01), especially when only the most accurate dating levels (top of the core, ca 75 years) are taken into account (n = 13, r = 0.75, p <0.01). However, 1) the linear regressions of both models show significantly different slopes, and 2) chironomid reconstruction underestimates in ca. 3 ºC air reconstruction. The later is probably because the fossil chironomid model has been developed for a different geographical region. Nevertheless, both models provide an independent line of evidence of a recent warming (since ca mid 1980s) in Lake Cimera. Our data also supports the use of chironomids head capsules as an effective tool to infer past temperatures

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Palaeolimnological analyses as information source for large lake biomonitoring

Cited by 12 publications

References 8 publications

Factors influencing the distribution of chironomids in lakes distributed along a latitudinal gradient in northwestern Quebec, Canada

Factors influencing the distribution of chironomids in lakes distributed along a latitudinal gradient in northwestern Quebec, Canada

Evidence for a warmer period during the 12th and 13th centuries AD from chironomid assemblages in Southampton Island, Nunavut, Canada

Recent warming in a high mountain lake (Laguna Cimera, Central Spain) inferred by means of fossil chironomids

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