The Development of the Baltic Sea Basin During the Last 130 ka

Andrén, Thomas; Björck, Svante; Andrén, Elinor; Conley, Daniel J.; Zillén, Lovisa; Anjar, Johanna

doi:10.1007/978-3-642-17220-5_4

Cited by 176 publications

(198 citation statements)

References 72 publications

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“…Thus, species composition in LG1 is random but spatially autocorrelated due to dispersal limitation of species (see Tuomisto & Ruokolainen, 2006 and references therein). Although lakes in LG1 are characterized by widespread species, differences in the mode of dispersal, e.g., active versus passive (see Kappes & Haase, 2012), in combination with different post-glacial recolonization routes (e.g., Refseth et al, 1998;Tollefsrud et al, 2008), time from deglaciation (see Andrén et al, 2011) and the presence of geographical barriers may explain our findings. The partial Mantel tests showed that environmental distances are more important than geographical distances in LG2.…”

Section: Species Richnessmentioning

confidence: 74%

“…None of the presently existing lakes were formed before the retreat of the glaciers after the YD and they are younger than 11,000 years. Many of those lakes are even younger, as Scandinavia was fully ice-free only after 9,800 years BP (Andrén et al, 2011). Occurrences of at least five subfossil freshwater gastropod species from deposits dated back to 9,000 years BP in southern central Norway (ca 59°N-60°N) (Økland, 1990) and 9,500-6,700 years BP in northern Finland (ca 66°N-68°N) (Salmi, 1963;Vasari et al, 1963) indicate a rapid recolonization.…”

Section: Species Richnessmentioning

confidence: 99%

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Distribution patterns of European lacustrine gastropods: a result of environmental factors and deglaciation history

et al. 2016

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Contemporary climate and deglaciation history have received strong support as drivers of species richness and composition for several European taxa. We explored the influence of these factors on patterns of species richness and faunal composition of 244 freshwater gastropod species from 898 European lakes. We evaluated the influence of late Pleistocene deglaciation and seven physiographical and climatic factors on gastropod distributions using multiple linear regression models. We investigated species beta diversity patterns and the influence of species dispersal abilities and/or environment on species composition between lake subsets with different deglaciation history. Contemporary factors and deglaciation history explain parts of variation in species richness across European lakes. Beta diversity analysis revealed moderate to high differences in species composition between the predefined groups. Patterns of species replacement and species loss indicate that lacustrine gastropod faunas of formerly glaciated areas are subsets of non-glaciated ones. Dispersal limitations and environmental gradients control patterns of beta diversity within different lake subsets. We find strong support that the distribution of European limnic gastropods, at least partially, carries the imprint of the last Ice Age. The differences in species richness and composition point towards a gradual, ongoing process of species recolonization after deglaciation.

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Section: Species Richnessmentioning

confidence: 74%

Section: Species Richnessmentioning

confidence: 99%

Distribution patterns of European lacustrine gastropods: a result of environmental factors and deglaciation history

et al. 2016

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“…occurred, followed by the Littorina Sea (8,500 B.P. to present) when the Baltic Sea turns brackish again (20). High-resolution strontium isotope analyses of mollusc shells indicate that the salinity in the first phase of the Littorina Sea (7,130-2,775 B.P.)…”

Section: Resultsmentioning

confidence: 98%

Population-scale sequencing reveals genetic differentiation due to local adaptation in Atlantic herring

Lamichhaney

Barrio

Rafati

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

229

257

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The Atlantic herring (Clupea harengus), one of the most abundant marine fishes in the world, has historically been a critical food source in Northern Europe. It is one of the few marine species that can reproduce throughout the brackish salinity gradient of the Baltic Sea. Previous studies based on few genetic markers have revealed a conspicuous lack of genetic differentiation between geographic regions, consistent with huge population sizes and minute genetic drift. Here, we present a cost-effective genome-wide study in a species that lacks a genome sequence. We first assembled a muscle transcriptome and then aligned genomic reads to the transcripts, creating an "exome assembly," capturing both exons and flanking sequences. We then resequenced pools of fish from a wide geographic range, including the Northeast Atlantic, as well as different regions in the Baltic Sea, aligned the reads to the exome assembly, and identified 440,817 SNPs. The great majority of SNPs showed no appreciable differences in allele frequency among populations; however, several thousand SNPs showed striking differences, some approaching fixation for different alleles. The contrast between low genetic differentiation at most loci and striking differences at others implies that the latter category primarily reflects natural selection. A simulation study confirmed that the distribution of the fixation index F ST deviated significantly from expectation for selectively neutral loci. This study provides insights concerning the population structure of an important marine fish and establishes the Atlantic herring as a model for population genetic studies of adaptation and natural selection.Baltic herring | genetics | population biology

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“…The Baltic Sea has been subject to variations in salinity and redox conditions throughout the Holocene (Björck 1995;Zillén et al 2008;Andrén et al 2011) and is thus an ideal location to study both P authigenesis upon deposition and P diagenesis at depth. Currently, one of the largest hypoxic areas is located in the Baltic Proper (Fig.…”

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

“…The Baltic Sea is experiencing widespread hypoxia and severe cyanobacteria blooms, which are linked to enhanced external inputs of nutrients into the coastal waters from agriculture and waste water (Gustafsson et al 2012;Funkey et al 2014;Carstensen et al 2014). In the past, large parts of the Baltic Proper were also hypoxic after the intrusion of seawater into the freshwater Ancyclus lake and the establishment of the Littorina Sea (A/L transition; ∼ 8000 year before present (BP); Andrén et al 2011). This interval of hypoxia occurred during the Holocene Thermal Maximum (HTM; 8000-4000 years BP) when the inflow of North Sea water and warmer sea surface temperatures together likely promoted water column stratification and the subsequent development of hypoxia in the Baltic Proper (Zillén et al 2008).…”

Section: Communicated By David Reide Corbettmentioning

confidence: 99%

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

Dijkstra

Krupinski

Yamane

et al. 2017

Estuaries and Coasts

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Salinity variations in restricted basins like the Baltic Sea can alter their vulnerability to hypoxia (i.e., bottom water oxygen concentrations <2 mg/l) and can affect the burial of phosphorus (P), a key nutrient for marine organisms. We combine porewater and solid-phase geochemistry, microanalysis of sieved sediments (including XRD and synchrotron-based XAS), and foraminiferal δ 18 O and δ 13 C analyses to reconstruct the bottom water salinity, redox conditions, and P burial in the Ångermanälven estuary, Bothnian Sea. Our sediment records were retrieved during the Integrated Ocean Drilling Program (IODP) Baltic Sea Paleoenvironment Expedition 347 in 2013. We demonstrate that bottom waters in the Ångermanälven estuary became anoxic upon the intrusion of seawater in the early Holocene, like in the central Bothnian Sea. The subsequent refreshening and reoxygenation, which was caused by gradual isostatic uplift, promoted P burial in the sediment in the form of Mn-rich vivianite. Vivianite authigenesis in the surface sediments of the more isolated part of the estuary ultimately ceased, likely due to continued refreshening and an associated decline in productivity and P supply to the sediment. The observed shifts in environmental conditions also created conditions for postdepositional formation of authigenic vivianite, and possibly apatite formation, at ∼8 m composite depth. These salinityrelated changes in redox conditions and P burial are highly relevant in light of current climate change. The results specifically highlight that increased freshwater input linked to global warming may enhance coastal P retention, thereby contributing to oligotrophication in both coastal and adjacent open waters.

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The Development of the Baltic Sea Basin During the Last 130 ka

Cited by 176 publications

References 72 publications

Distribution patterns of European lacustrine gastropods: a result of environmental factors and deglaciation history

Distribution patterns of European lacustrine gastropods: a result of environmental factors and deglaciation history

Population-scale sequencing reveals genetic differentiation due to local adaptation in Atlantic herring

Holocene Refreshening and Reoxygenation of a Bothnian Sea Estuary Led to Enhanced Phosphorus Burial

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