Late paleocene flora of the northern Alaska Peninsula: the role of transberingian plant migrations and climatic change

Moiseeva, M. G.; Herman, Alexei B.; Spicer, Robert A.

doi:10.1134/s0031030109100116

Cited by 19 publications

(5 citation statements)

References 7 publications

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“…The Smith et al (1981) reconstruction indicative of a notable lack of extinctions at these high palaeolatitudes Herman, 2007c). After the K/T transition warming at high Arctic latitudes led to an early Paleocene poleward migration of many taxa such that the early Sagwon Flora of North Alaska (Selandian-Thanetian) (Spicer et al, 2009b) shows strong similarities with the Maastrichtian Koryak Flora (Moiseeva et al, 2009).…”

Section: Cretaceous Floras From Northeastern Russiamentioning

confidence: 99%

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The Late Cretaceous environment of the Arctic: A quantitative reassessment based on plant fossils

Spicer

Herman

2010

Palaeogeography, Palaeoclimatology, Palaeoecology

164

102

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Section: Cretaceous Floras From Northeastern Russiamentioning

confidence: 99%

“…Such floras were not used for palaeoclimatic analysis. the Paleocene palaeolatitudes as high as 85°N (Moiseeva et al, 2009;Spicer et al, 2009b). There is no evidence for major floristic turnover or extinctions at or near the end-Cretaceous boundary.…”

Section: The Effect Of Volcanismmentioning

confidence: 99%

The Late Cretaceous environment of the Arctic: A quantitative reassessment based on plant fossils

Spicer

Herman

2010

Palaeogeography, Palaeoclimatology, Palaeoecology

164

102

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“…w = widespread. For consistency and ease of comparison the numbered references and explanatory notes for the BLB and the NALB here are the same as those used for all the land bridges as treated in Graham (2010, appendix 2): Beringia ‐ 1 Budantsev, ; 2 Penhallow, ; 3 LaMotte, ; 5 Heer, ; 6 Chaney, ; 7 Lesquereux, ; 11 Heer, ; 14 Manchester et al, ; 16 Golovneva, ; 17 Stockey et al, ; 21 Budantsev, ; 22 Lavrenko & Fot'janova, ; 24 Vakhrameev, ; 25 Zhilin, ; 26 Velichko et al, ; 27 Arkhipov et al, ; 28 Fradkina et al, , ; 29 Akhmetiev, ; 30 Pavlyutkin & Chekryzhov, ; 35 Wolfe et al, ; 36 Stockey et al, ; 37 Wolfe, 1977; 38 Vakhrameev, ; 39 Pigg et al, ; 40 Harris et al, ; 41 Piel, ; 42 Wolfe & Tanai, ; 43 Becker, ; 44 Leopold & Liu, ; 45 Wolfe & Tanai, ; 46 Reinink‐Smith & Leopold, ; 47 Chelebaeva, ; 48 Pound et al, ; 51 Moiseeva et al, ; 52 Takhtajan et al, et seq. ; 53 McIver & Basinger, ; 54 Bell, .…”

Section: Introductionmentioning

confidence: 99%

The role of land bridges, ancient environments, and migrations in the assembly of the North American flora

Graham

2018

J of Sytematics Evolution

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Continental‐scale assembly of floras results from past and present in situ diversification in association with several external processes. Among these processes are the making and breaking of connections among landmasses. Connections among landmasses are constantly in flux as are the climates and landscapes along the connection corridors, so that these corridors, or land bridges, may either facilitate or restrict migration at a given time. Across land bridges, changing landscape‐level and organismal factors include the dispersal potential and vectors of propagules, competition, predation, and distributions altered by pathogens. Assembly of a flora is, therefore, the outcome of complex, interacting, temporally‐varying factors that render simplistic explanations unlikely. In the case of North America, the continent experienced ephemeral connections with adjacent regions via five land bridges over the last 100 Ma at different times and under different climates and specific landscape morphologies, including edaphic characteristics. Here, I emphasize the earliest of these connections, Beringia, which probably comprised an initially‐incomplete land bridge during the Cretaceous and Paleocene resulting from compression, fragmentation, and rotation of Asian‐North American sub‐blocks as North America began moving westward from the northern portion of the Mid‐Atlantic Ridge. During the same time, additional land was added to Beringia with accretion of terranes and the subduction of the northern edge of the Pacific Plate beneath the North American‐Asian Plates in the Eocene to form the Aleutian Islands. Other connections between North America and adjacent landmasses were the North Atlantic, the Antilles, Central America, and the Magellan land bridge.

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“…The Selandian Sagwon floristic assemblage from the upper part of the Prince Creek Formation, Colville River, Alaska (Moiseeva et al . 2009; Spicer et al . 2009b) is also a comparatively depauperate flora that has insufficient woody dicot taxa for quantitative CLAMP climate reconstruction.…”

Section: Discussionmentioning

confidence: 99%

The early Paleocene (Danian) climate of Svalbard based on palaeobotanical data

Golovneva,

Zolina,

Spicer

2023

Papers in Palaeontology

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The early Paleocene (Danian) Barentsburg flora from the Firkanten Formation, Svalbard, provides a valuable insight into the environment and climate of the Arctic early in the warm Palaeogene prior to the Paleocene–Eocene Thermal Maximum (PETM) event. The flora includes c. 50 species of ferns, ginkgos, conifers and angiosperms. Angiosperms predominate and are represented by the families Platanaceae, Cercidiphyllaceae, Trochodendraceae, Hamamelidaceae, Fagaceae, Betulaceae, Nyssaceae and several taxa of uncertain taxonomic position. Palaeoclimate parameters, calculated using a new calibration of the Climate Leaf Analysis Multivariate Program (CLAMP), indicate that Svalbard in the early Paleocene was characterized by a temperate, maritime, humid, seasonal climate with cool mild winters and warm summers. Humidity was highest during winter months. Short‐term winter snow cover and light frosts were likely to have been frequent. The CLAMP analysis yields a mean annual temperature of 10.1 ± 1.98°С, a warmest month mean temperature of 19.2 ± 2.49°C and a coldest month mean temperature of 1.7 ± 3.24°С. The growing season lasted c. 6 months. Precipitation during this growth period was 572.4 ± 296.50 mm, while vapour pressure deficit and potential evapotranspiration indicate very high humidity year‐round, with summer being only slightly drier than winter. Taken together with data from other early Paleocene circum‐Arctic sites, these results point to highly uniform, temperate and extremely humid conditions around the margins of the early Cenozoic Arctic Ocean. This condition represents the warm background condition that dominated in the Arctic prior to the anomalous extreme warmth of the early Eocene.

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Late paleocene flora of the northern Alaska Peninsula: the role of transberingian plant migrations and climatic change

Cited by 19 publications

References 7 publications

The Late Cretaceous environment of the Arctic: A quantitative reassessment based on plant fossils

The Late Cretaceous environment of the Arctic: A quantitative reassessment based on plant fossils

The role of land bridges, ancient environments, and migrations in the assembly of the North American flora

The early Paleocene (Danian) climate of Svalbard based on palaeobotanical data

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