Hickory (Carya spp.) Distribution and Replacement in a Second-growth Oak hickory Forest of Southeastern Ohio

McCarthy, Brian C.; Wistendahl, Warren A.

doi:10.2307/2426064

Cited by 15 publications

(5 citation statements)

References 36 publications

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“…Polyploidization may allow species to adapt to dramatic changes in the environment [118,120,121], so that polyploid lineages may have higher diversification rates than that of diploid lineages [122,123]. Furthermore, sympatric Carya species in southeastern Ohio have shown distribution replacement especially concerning topography and its associated microhabitats [124]. Thus, the richness of ecological opportunities, key morphological innovations, and polyploidy may have been responsible for the high diversification rate of ENA Carya .…”

Section: Discussionmentioning

confidence: 99%

Integrated Fossil and Molecular Data Reveal the Biogeographic Diversification of the Eastern Asian-Eastern North American Disjunct Hickory Genus (Carya Nutt.)

Zhang

Xiao

et al. 2013

PLoS ONE

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The hickory genus (Carya) contains ca. 17 species distributed in subtropical and tropical regions of eastern Asia and subtropical to temperate regions of eastern North America. Previously, the phylogenetic relationships between eastern Asian and eastern North American species of Carya were not fully confirmed even with an extensive sampling, biogeographic and diversification patterns had thus never been investigated in a phylogenetic context. We sampled 17 species of Carya and 15 species representing all other genera of the Juglandaceae as outgroups, with eight nuclear and plastid loci to reconstruct the phylogeny of Carya. The phylogenetic positions of seven extinct genera of the Juglandaceae were inferred using morphological characters and the molecular phylogeny as a backbone constraint. Divergence times within Carya were estimated with relaxed Bayesian dating. Biogeographic analyses were performed in DIVA and LAGRANGE. Diversification rates were inferred by LASER and APE packages. Our results support two major clades within Carya, corresponding to the lineages of eastern Asia and eastern North America. The split between the two disjunct clades is estimated to be 21.58 (95% HPD 11.07-35.51) Ma. Genus-level DIVA and LAGRANGE analyses incorporating both extant and extinct genera of the Juglandaceae suggested that Carya originated in North America, and migrated to Eurasia during the early Tertiary via the North Atlantic land bridge. Fragmentation of the distribution caused by global cooling in the late Tertiary resulted in the current disjunction. The diversification rate of hickories in eastern North America appeared to be higher than that in eastern Asia, which is ascribed to greater ecological opportunities, key morphological innovations, and polyploidy.

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Section: Discussionmentioning

confidence: 99%

Integrated Fossil and Molecular Data Reveal the Biogeographic Diversification of the Eastern Asian-Eastern North American Disjunct Hickory Genus (Carya Nutt.)

Zhang

Xiao

et al. 2013

PLoS ONE

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“…Drier (southern and south-western) slopes in that region typically have lower primary productivity Niering 1965, 1975) and accordingly lower fuel loads. In the eastern USA, including eastern Kentucky, slope aspect does not influence tree growth (McCarthy and Wistendahl 1988;Fekedulegn et al 2003) in the same way that it does in arid and semi-arid regions Niering 1965, 1975). As a result, slope aspect would not be expected to influence fire behaviour as it does in the western states.…”

Section: Spatial Distribution Of Firesmentioning

confidence: 98%

Factors influencing wildfire occurrence and distribution in eastern Kentucky, USA

Maingi

Henry

2007

Int. J. Wildland Fire

130

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Most wildfires in Kentucky occur in the heavily forested Appalachian counties in the eastern portion of the state. In the present study, we reconstructed a brief fire history of eastern Kentucky using Landsat Thematic Mapper and Enhanced Thematic Mapper Plus images acquired between 1985 and 2002. We then examined relationships between fire occurrence and area burned, and abiotic and human factors. Abiotic factors included Palmer Drought Severity Index, slope, aspect, and elevation, and human factors included county unemployment rates, distance to roads, and distance to populated places. Approximately 83% of the total burned area burned only once, 14% twice, and 3% thrice. More fires burned in the winter compared with the fall, but the latter fires were larger on average and accounted for ~71% of the total area burned. Fire size was negatively correlated with Palmer Drought Severity Index for certain times of the year. There were significant relationships between elevation and slope and fire occurrence, but not between aspect and fire occurrence. We found links between fire location and proximity to roads and settlements, but we found no correlations between monthly unemployment rates and arson-caused fires.

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“…affect species composition and forest structure (Oliver 1981, Collins and Pickett 1982, McCarthy and Wistendahl 1988, Keller and Hix 1999, Rentch et al 2003, Hart and Grissino-Mayer 2009. The pattern of tree deaths (i.e., disturbance regime) varies for different forests from large scale, highly episodic mortality to small scale, more continuous mortality in which more trees die singly or in small groups (Runkle and Yetter 1987).…”

Section: Introductionmentioning

confidence: 99%

“…Comparatively little research has been conducted concerning the effects of topography on gap dynamics in eastern forests (Table 1). McCarthy and Wistendahl (1988) felt that topographical features such as slope position and slope aspect were the best predictors of the distribution, abundance, and regeneration patterns of Carya species in Ohio. In North Carolina, Clinton et al (1994) discovered that ridges had a significantly greater total density of gaps than mid or lower slopes.…”

Section: Introductionmentioning

confidence: 99%

Canopy Gap Dynamics in a Second-Growth Appalachian Hardwood Forest in West Virginia

Himes

Rentch

2013

Castanea

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Hickory (Carya spp.) Distribution and Replacement in a Second-growth Oak hickory Forest of Southeastern Ohio

Cited by 15 publications

References 36 publications

Integrated Fossil and Molecular Data Reveal the Biogeographic Diversification of the Eastern Asian-Eastern North American Disjunct Hickory Genus (Carya Nutt.)

Integrated Fossil and Molecular Data Reveal the Biogeographic Diversification of the Eastern Asian-Eastern North American Disjunct Hickory Genus (Carya Nutt.)

Factors influencing wildfire occurrence and distribution in eastern Kentucky, USA

Canopy Gap Dynamics in a Second-Growth Appalachian Hardwood Forest in West Virginia

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