Pediastrum algae from the classic late glacial Bølling Sø site, Denmark: Response of aquatic biota to climate change

Sarmaja‐Korjonen, Kaarina; Seppänen, Anna Martta; Bennike, Ole

doi:10.1016/j.revpalbo.2005.12.003

Cited by 57 publications

(27 citation statements)

References 31 publications

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“…3). Pediastrum species appear to be good indicators of productivity in arctic and high mountain lakes (Sarmaja-Korjonen et al, 2006;Weckström et al, 2009). Apparently, terrestrial vegetation also responded to rapid warming as evidenced by the pollen and plant macrofossil records.…”

Section: Lake Paleoenvironment and Cladocera Remainsmentioning

confidence: 96%

Cladocera response to Late Glacial to Early Holocene climate change in a South Carpathian mountain lake

et al. 2011

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This study explores changes in cladoceran composition in a high mountain lake of the Retezat (Lake Brazi), the South Carpathian Mountains of Romania, during the Late Glacial-Early Holocene (14,500-11,600 cal. yr. BP) transition using a paleolimnological approach. The lake had a species poor cladoceran community throughout this period. Daphnia longispina, Chydorus sphaericus and Alona affinis were the most common, showing marked fluctuations in their relative abundances through time. Distinct faunal response to warming at the Younger Dryas (YD)/Preboreal transition was recorded by increasing fossil densities and distinct community composition change: Alona affinis became dominant while numbers of Chydorus sphaericus dramatically decreased. In the Early Holocene, the productivity of Lake Brazi seem to have increased as reflected by higher numbers of Cladocera due to appearance of new species (Alona rectangula, A. quadrangularis and A. guttata) which are common in productive waters. Significant negative correlation was found between average dorsal length of daphnid ephippia and the NGRIP d18 O isotope values. Given the absence of fish predation, changes in Daphnia ephippia size were taken to indicate climatic change: larger ephippium size inferred cold conditions during the Late Glacial, while smaller size reflected climate warming during the Early Holocene. We conclude that Cladocera fossils are good indicators of climatic change that happened during the transition from the Late Glacial to the Holocene. We found that climatic conditions can be tracked either by size distribution of Daphnia ephippia (larger ephippium size under colder climate) and/or by community change of cladocerans.

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Section: Lake Paleoenvironment and Cladocera Remainsmentioning

confidence: 96%

Cladocera response to Late Glacial to Early Holocene climate change in a South Carpathian mountain lake

et al. 2011

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“…type and Juniperus, as well as a high concentration of Poaceae, Cyperaceae and Artemisia comparable with well dated cores from Wolbrom (Latałowa 1989) and Jaworzno (Szczepanek and Stachowicz-Rybka 2004) nearby. Also noteworthy is a high proportion of chlorophyta of the genus Pediastrum, which is characteristic of late glacial sediments (Leroy et al 2000;Komárek and Jankovská 2001;Sarmaja-Korjonen et al 2006).…”

Section: Late Vistulian Periodmentioning

confidence: 99%

The Late Vistulian and Holocene evolution of Jezioro Lake: a record of environmental change in southern Poland found in deposits and landforms

et al. 2012

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Jezioro Lake is the only natural lake in southern Poland outside mountainous areas to have existed continuously since the Pleistocene. The record of environmental change in the Late Vistulian (Weichselian) and Holocene is preserved in the deposits and landforms around the lake. This paper presents the results of paleogeographical and paleoecological research that emabled us to reconstruct the history of the Jezioro Lake. At the end of the Vistulian period, the outlet of the lake was blocked by a parabolic dune moving in from the west. Limnic sedimentation was evident in the sediment core at all levels from the Holocene, with remains of Cladocera, Chironomidae larvae, and aquatic plants. The lake did not disappear at that time, although its area decreased by a factor of 12 by the end of the period. Paleobotanical research permitted the reconstruction of sequences of plant communities and changes in nutrient status and water level. An initial oligotrophic lake, as indicated by the presence of Isoe¨tes lacustris L., changed to a eutrophic lake, as indicated by the presence of Potamogeton natans L. and Nuphar sp., then the lake progressed to the present-day dystrophic lake that is surrounded by a swamp. The profile of organic deposits contains a record of environmental change at least since the Younger Dryas in southern Poland.

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“…Despite evidence that fossil Pediastrum communities reflect past limnological change, attempts to draw regional climate inferences from Pediastrum assemblages have often produced equivocal results (Nielsen and Sørensen 1992;Sarmaja-Korjonen et al 2006;Komárek and Jankovská 2001). This is perhaps unsurprising, given that palaeoreconstructions which incorporate Pediastrum data are often focused on the large-magnitude climate events of the late glacial in the high to middle latitudes, where the landscape had been relatively recently deglaciated, and limnological change associated with landscape evolution (Engstrom et al 2000) might mask effects of changing climate on Pediastrum assemblages.…”

Section: Introductionmentioning

confidence: 99%

Pediastrum species as potential indicators of lake-level change in tropical South America

Whitney

Mayle

2012

J Paleolimnol

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We explored the potential for using Pediastrum (Meyen), a genus of green alga commonly found in palaeoecological studies, as a proxy for lakelevel change in tropical South America. The study site, Laguna La Gaiba (LLG) (17°45 0 S, 57°40 0 W), is a broad, shallow lake located along the course of the Paraguay River in the Pantanal, a 135,000-km 2 tropical wetland located mostly in western Brazil, but extending into eastern Bolivia. Fourteen surface sediment samples were taken from LLG across a range of lake depths (2-5.2 m) and analyzed for Pediastrum. We found seven species, of which P. musteri (Tell et Mataloni), P. argentiniense (Bourr. et Tell), and P. cf. angulosum (Ehrenb.) ex Menegh. were identified as potential indicators of lake level. Results of the modern dataset were applied to 31 fossil Pediastrum assemblages spanning the early Holocene (12.0 kyr BP) to present to infer past lake level changes qualitatively. Early Holocene (12.0-9.8 kyr BP) assemblages do not show a clear signal, though abundance of P. simplex (Meyen) suggests relatively high lake levels. Absence of P. musteri, characteristic of deep, open water, and abundance of macrophyte-associated taxa indicate lake levels were lowest from 9.8 to 3.0 kyr BP. A shift to wetter conditions began at 4.4 kyr BP, indicated by the appearance of P. musteri, though inferred lake levels did not reach modern values until 1.4 kyr BP. The Pediastrum-inferred mid-Holocene lowstand is consistent with lower precipitation, previously inferred using pollen from this site, and is also in agreement with evidence for widespread drought in the South American tropics during the middle Holocene. An inference for steadily increasing lake level from 4.4 kyr BP to present is consistent with diatominferred water level rise at Lake Titicaca, and demonstrates coherence with the broad pattern of increasing monsoon strength from the late Holocene until present in tropical South America.

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Pediastrum algae from the classic late glacial Bølling Sø site, Denmark: Response of aquatic biota to climate change

Cited by 57 publications

References 31 publications

Cladocera response to Late Glacial to Early Holocene climate change in a South Carpathian mountain lake

Cladocera response to Late Glacial to Early Holocene climate change in a South Carpathian mountain lake

The Late Vistulian and Holocene evolution of Jezioro Lake: a record of environmental change in southern Poland found in deposits and landforms

Pediastrum species as potential indicators of lake-level change in tropical South America

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