Paleoproductivity proxies and alkenone precursors in the Western Mediterranean during the Early-Middle Pleistocene transition

Marino, Maria; Rodrigues, Teresa; Quivelli, Ornella; Girone, Angela; Maiorano, Patrizia; Bassinot, Franck

doi:10.1016/j.palaeo.2022.111104

Cited by 6 publications

(2 citation statements)

References 136 publications

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“…The higher temperature expedites fish growth by increasing metabolism, but at the same time may limit food availability through bottom-up effects, resulting in a decrease in growth [82]. Although palaeoproductivity data for the eastern Mediterranean during MIS 20-18 are not available, data from the Western Mediterranean [83] indicate increase, rather than decrease, of primary productivity during the interglacial MIS 19, thus rejecting a negative feedback of warming on fish growth at that time.…”

Section: Discussionmentioning

confidence: 99%

Palaeontological evidence for community-level decrease in mesopelagic fish size during Pleistocene climate warming in the eastern Mediterranean

et al. 2023

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Mesopelagic fishes are an important element of marine food webs, a huge, still mostly untapped food resource and great contributors to the biological carbon pump, whose future under climate change scenarios is unknown. The shrinking of commercial fishes within decades has been an alarming observation, but its causes remain contended. Here, we investigate the effect of warming climate on mesopelagic fish size in the eastern Mediterranean Sea during a glacial–interglacial–glacial transition of the Middle Pleistocene (marine isotope stages 20–18; 814–712 kyr B.P.), which included a 4°C increase in global seawater temperature. Our results based on fossil otoliths show that the median size of lanternfishes, one of the most abundant groups of mesopelagic fishes in fossil and modern assemblages, declined by approximately 35% with climate warming at the community level. However, individual mesopelagic species showed different and often opposing trends in size across the studied time interval, suggesting that climate warming in the interglacial resulted in an ecological shift toward increased relative abundance of smaller sized mesopelagic fishes due to geographical and/or bathymetric distribution range shifts, and the size-dependent effects of warming.

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Section: Discussionmentioning

confidence: 99%

Palaeontological evidence for community-level decrease in mesopelagic fish size during Pleistocene climate warming in the eastern Mediterranean

et al. 2023

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“…However, our current view of past environmental changes and evolutionary responses of marine organisms has, until recently, been limited to selected groups of organisms whose remains are preserved in the fossil record. Examples of such fossilizing taxa are mollusks (Machado et al, 2018;Mcgann and Powell, 2022), coccolithophores (Jacques and Luc, 2007;Marino et al, 2022), foraminifera (Kujawa et al, 2021;Pados-Dibattista et al, 2022), diatoms (Oksman et al, 2017;Miettinen, 2018), and dinoflagellate cysts (Ellegaard et al, 2017;Hennissen et al, 2017;Gussone and Friedrich, 2018;Aubry et al, 2020). The compositional variation of these taxa reflects transformations in marine environmental conditions.…”

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confidence: 99%

Sedimentary ancient DNA: a new paleogenomic tool for reconstructing the history of marine ecosystems

et al. 2023

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Sedimentary ancient DNA (sedaDNA) offers a novel retrospective approach to reconstructing the history of marine ecosystems over geological timescales. Until now, the biological proxies used to reconstruct paleoceanographic and paleoecological conditions were limited to organisms whose remains are preserved in the fossil record. The development of ancient DNA analysis techniques substantially expands the range of studied taxa, providing a holistic overview of past biodiversity. Future development of marine sedaDNA research is expected to dramatically improve our understanding of how the marine biota responded to changing environmental conditions. However, as an emerging approach, marine sedaDNA holds many challenges, and its ability to recover reliable past biodiversity information needs to be carefully assessed. This review aims to highlight current advances in marine sedaDNA research and to discuss potential methodological pitfalls and limitations.

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Controls on long-term changes in bathyal bivalve biomass: The Pleistocene glacial–interglacial record in the eastern Mediterranean

Porz,

Zuschin,

Strotz

et al. 2024

Deep Sea Research Part I: Oceanographic Research Papers

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Paleoproductivity proxies and alkenone precursors in the Western Mediterranean during the Early-Middle Pleistocene transition

Cited by 6 publications

References 136 publications

Palaeontological evidence for community-level decrease in mesopelagic fish size during Pleistocene climate warming in the eastern Mediterranean

Palaeontological evidence for community-level decrease in mesopelagic fish size during Pleistocene climate warming in the eastern Mediterranean

Sedimentary ancient DNA: a new paleogenomic tool for reconstructing the history of marine ecosystems

Controls on long-term changes in bathyal bivalve biomass: The Pleistocene glacial–interglacial record in the eastern Mediterranean

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