Summation of quaternary glaciations in the United States of America

Richmond, Gerald M.; Fullerton, David S.

doi:10.1016/0277-3791(86)90184-8

Cited by 66 publications

(47 citation statements)

References 58 publications

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“…During such a displacement, they likely would have required deep-water habitats throughout the glacialduring advance, stasis, and retreat-a period of approximately 70,000 year (Richmond and Fullerton 1986). If they were forced to occupy shallow water bodies like rivers, which were the most-available habitats (Bailey and Smith 1981), their adaptations for hypolimnetic living (Zimmerman et al 2006) would have put them at a competitive disadvantage with leans, which today at higher latitudes inhabit rivers (Scott and Crossman 1998).…”

Section: Deep-water Morphs In Proglacial Lakesmentioning

confidence: 97%

Differentiation of deep-water lake charr Salvelinus namaycush in North American lakes

Eshenroder

2007

Environ Biol Fish

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Deep-water morphs of lake charr, Salvelinus namaycush, are found, with one exception, in four of the largest lakes in the world: lakes Superior and Mistassini (QC) and Great Bear and Slave lakes. This paper advances a hypothesis for resource polymorphisms involving two types of deepwater morph, one of which is characteristic of the humper and the other of the siscowet charrs of Lake Superior. My hypothesis states that, first, the humper, or a humper-like morph, diverged postglacially in sympatry from the ancestral common (shallow-water) lake charr and became a feeding specialist on Mysis relicta. Second, in at least two of the four lakes the siscowet, or a siscowet-like charr, diverged as a feeding specialist on postglacially derived forms of deep-water ciscoes. In Lake Superior a successional process may have resulted in dominance of the siscowet at the expense of the humper charr. I concur with a previous inference that the one occurrence of a deep-water charr in a small lake (the above exception) represents emigration from Lake Superior. I further infer that this event involved an early humper charr, which implies that this morphotype had differentiated in Lake Superior in less than 1,900 year. I suggest that innate differences in plasticity, breeding behavior and assortive mating, and philopatry account for why Arctic charr isolate readily in small lakes whereas lake charr do not. My hypothesis assumes divergence of deep-water morphs occurred postglacially, an idea consistent with genetic and biogeographical evidence.

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Section: Deep-water Morphs In Proglacial Lakesmentioning

confidence: 97%

Differentiation of deep-water lake charr Salvelinus namaycush in North American lakes

Eshenroder

2007

Environ Biol Fish

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“…The effects of the last ice age on flora and fungal communities have been hotly debated in recent years. The maximum glaciation in the Northern Hemisphere was considered to cover most of North America (Richmond and Fullerton 1986). Icebound earth surface followed by rapid melting would eliminate all surface life forms and significantly impact the landscape.…”

Section: Emerging Directionsmentioning

confidence: 99%

Recent advances in population genetics of ectomycorrhizal mushroomsRussulaspp.

Wang

Zhang

et al. 2015

Mycology

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The mushroom genus Russula is among the largest and morphologically most diverse basidiomycete genera in the world. They are broadly distributed both geographically and ecologically, forming ectomycorrhizal relationships with a diversity of plants. Aside from their ecological roles, some Russula species are gourmet mushrooms. Therefore, understanding their population biology and fundamental life history processes are important for illustrating their ecological roles and for developing effective conservation and utilization strategies. Here, we review recent population genetic and molecular ecological studies of Russula. We focus on issues related to genet sizes, modes of reproduction, population structures, and roles of geography on their genetic relationships. The sampling strategies, molecule markers, and analytical approaches used in these studies will also be discussed. Our review suggests that in Russula, genets are typically small, local recombination is frequent, and that long-distance spore dispersal is relatively uncommon. We finish by discussing several long-standing issues as well as future trends with regard to life history and evolution of this important group of mushrooms.

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“…As southern lobes of the Laurentide Ice sheet advanced close to their maximum Late Wisconsinan extent at ca. 21 kyr BP (Richmond and Fullerton, 1986), this interval possibly witnessed the true global glacial maximum of the last glacial cycle in all montane regions that received precipitation amounts adequate for glacier expansion. However, it is possible that glaciers in different regions did not reach their maximum limits exactly at the same time, but this issue requires testing with better dating control.…”

Section: Ois 2 Coolingmentioning

confidence: 99%

Interhemispheric synchroneity of Marine Oxygen Isotope Stage 2 glacier fluctuations along the American cordilleras transect

Clapperton

2000

J. Quaternary Sci.

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Summation of quaternary glaciations in the United States of America

Cited by 66 publications

References 58 publications

Differentiation of deep-water lake charr Salvelinus namaycush in North American lakes

Differentiation of deep-water lake charr Salvelinus namaycush in North American lakes

Recent advances in population genetics of ectomycorrhizal mushroomsRussulaspp.

Interhemispheric synchroneity of Marine Oxygen Isotope Stage 2 glacier fluctuations along the American cordilleras transect

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