Holocene migration of lodgepole pine (<i>Pinus contorta</i> var. <i>latifolia</i>) in southern Yukon, Canada

Strong, Wayne L; Hills, L. V.

doi:10.1177/0959683613484614

Cited by 13 publications

(16 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results broadly agree with the findings of Strong and Hills (2013) who suggest that Pinus reached a northern extent between 59 o N and 60 o N at approximately 10-7 kacal BP as a result of geographic barriers before continuing northward after 7 kacal BP. Graham et al (1996) built and applied the FAUNMAP dataset (http://www.ucmp.berkeley.edu/faunmap) of fossil assemblages to elucidate patterns of change in mammal distributions through the Pleistocene to the present.…”

Section: )supporting

confidence: 83%

“…We want to determine which sample has the first local Pinus presence in each core using a cutoff of 5% (Strong and Hills, 2013). We can find which rows in the Pinus column in each "download"'s"count" data frame have presence over 5% and then find the highest row number since the samples in a dataset are ordered stratigraphically, with the youngest sample in the top row and the oldest sample in the bottom row.…”

Section: )mentioning

confidence: 99%

“…In their study a cutoff of 15% Pinus pollen was defined as the indicator of Pinus presence. Strong and Hills (2013) have remapped the migration front using a lower pollen proportion (5%) and more sites. Here, the analysis is partially replicated.…”

Section: )mentioning

confidence: 99%

See 2 more Smart Citations

neotoma: A Programmatic Interface to the Neotoma Paleoecological Database

Goring¹,

Dawson²,

Simpson

et al. 2015

Open Quaternary

View full text Add to dashboard Cite

Paleoecological data are integral to ecological and evolutionary analyses. First, they provide an opportunity to study ecological and evolutionary interactions between communities and abiotic environments across time scales. Second, they allow us to study the long-term outcomes of processes that occur infrequently, such as megadroughts, hurricanes, and rapid climate change. Third, the past allows us to study ecological processes in the absence of widespread anthropogenic influence.The R package neotoma, described here, obtains and manipulates data from the NeotomaPaleoecological Database (Neotoma Database: http://www.neotomadb.org). The Neotoma Database is a public-domain searchable repository for multiproxypaleoecological records spanning the past 5 million years. The Neotoma Database provides the data and cyberinfrastructure to study spatiotemporal dynamics of species and communities from the Pliocene to the present; neotoma provides a user interface to enable these studies. neotoma searches the Neotoma Database using terms that can include location, taxon name, or dataset type (e.g., pollen, vertebrate fauna, ostracode) using the Database's Application Programming Interface (API). The package returns a set of nested metadata associated with the site, including the full assemblage record, geochronological data to enable the rebuilding of age models, dataset metadata (e.g. age range of samples, date of accession into Neotoma, principal investigator), and site metadata (e.g. location, site name and description). neotoma also provides tools to allow cross-site analysis, including the ability to standardize taxonomies using built-in taxonomies derived from the published literature or user-provided taxonomies.We show how key functions in the neotoma package can be used, by reproducing analytic examples from the published literature focusing on Pinus migration following deglaciation and shifts in mammal species distributions during the Pleistocene.

show abstract

Section: )supporting

confidence: 83%

Section: )mentioning

confidence: 99%

See 1 more Smart Citation

neotoma: A Programmatic Interface to the Neotoma Paleoecological Database

Goring¹,

Dawson²,

Simpson

et al. 2015

Open Quaternary

View full text Add to dashboard Cite

show abstract

“…A Holocene colonization appears to be more likely. Glaciers in southeastern Alaska reached their modern positions by 13.5 ka and the archipelago was forested by 12.5 ka (Mann & Hamilton ), whereas lodgepole pine colonized interior Canada at the latitude of POW >10 ka, providing a colonization route for forest carnivores, including martens (Strong & Hills ). Bathymetry maps indicated that POW was connected with the mainland during this same time period via Kupreanof and Mitkof Islands (Small et al ), both of which have native American marten populations that appear to have colonized during the Holocene (Stone et al ).…”

Section: Resultsmentioning

confidence: 99%

Examining the uncertain origin and management role of martens on Prince of Wales Island, Alaska

Pauli

Moss

Manlick

et al. 2015

Conservation Biology

View full text Add to dashboard Cite

Conservation biologists are generally united in efforts to curtail the spread of non-native species globally. However, the colonization history of a species is not always certain, and whether a species is considered non-native or native depends on the conservation benchmark. Such ambiguities have led to inconsistent management. Within the Tongass National Forest of Alaska, the status of American marten (Martes americana) on the largest, most biologically diverse and deforested island, Prince of Wales (POW), is unclear. Ten martens were released to POW in the early 1930s, and it was generally believed to be the founding event, although this has been questioned. The uncertainty surrounding when and how martens colonized POW complicates management, especially because martens were selected as a design species for the Tongass. To explore the history of martens of POW we reviewed other plausible routes of colonization; genetically and isotopically analyzed putative marten fossils deposited in the late Pleistocene and early Holocene to verify marten occupancy of POW; and used contemporary genetic data from martens on POW and the mainland in coalescent simulations to identify the probable source of the present-day marten population on POW. We found evidence for multiple routes of colonization by forest-associated mammals beginning in the Holocene, which were likely used by American martens to naturally colonize POW. Although we cannot rule out human-assisted movement of martens by Alaskan Natives or fur trappers, we suggest that martens be managed for persistence on POW. More generally, our findings illustrate the difficulty of labeling species as non-native or native, even when genetic and paleo-ecological data are available, and support the notion that community resilience or species invasiveness should be prioritized when making management decisions rather than more subjective and less certain conservation benchmarks.

show abstract

“…3) [25, 26]. Paleontological records indicate that lodgepole pine migrated progressively northward and founded small isolated populations following the last glacial maximum [27–30]. There is little spatial population genetic structure in lodgepole pine [31, 32], which likely explains the lack of clines observed in the current study.…”

Section: Discussionmentioning

confidence: 83%

Purifying selection does not drive signatures of convergent local adaptation of lodgepole pine and interior spruce

Hodgins

Degner

et al. 2019

BMC Evol Biol

View full text Add to dashboard Cite

Background Lodgepole pine ( Pinus contorta ) and interior spruce ( Picea glauca , Picea engelmannii , and their hybrids) are distantly related conifer species. Previous studies identified 47 genes containing variants associated with environmental variables in both species, providing evidence of convergent local adaptation. However, if the intensity of purifying selection varies with the environment, clines in nucleotide diversity could evolve through linked (background) selection that would yield allele frequency-environment signatures resembling local adaptation. If similar geographic patterns in the strength of purifying selection occur in these species, this could result in the convergent signatures of local adaptation, especially if the landscape of recombination is conserved. In the present study, we investigated whether spatially/environmentally varying purifying selection could give rise to the convergent signatures of local adaptation that had previously reported. Results We analyzed 86 lodgepole pine and 50 interior spruce natural populations spanning heterogeneous environments in western Canada where previous analyses had found signatures of convergent local adaptation. We estimated nucleotide diversity and Tajima’s D for each gene within each population and calculated the strength of correlations between nucleotide diversity and environmental variables. Overall, these estimates in the genes with previously identified convergent local adaptation signatures had no similar pattern between pine and spruce. Clines in nucleotide diversity along environmental variables were found for interior spruce, but not for lodgepole pine. In spruce, genes with convergent adaption signatures showed a higher strength of correlations than genes without convergent adaption signatures, but there was no such disparity in pine, which suggests the pattern in spruce may have arisen due to a combination of selection and hybridization. Conclusions The results rule out purifying/background selection as a driver of convergent local adaption signatures in lodgepole pine and interior spruce. Electronic supplementary material The online version of this article (10.1186/s12862-019-1438-8) contains supplementary material, which is available to authorized users.

show abstract

Holocene migration of lodgepole pine (Pinus contorta var. latifolia) in southern Yukon, Canada

Cited by 13 publications

References 73 publications

neotoma: A Programmatic Interface to the Neotoma Paleoecological Database

neotoma: A Programmatic Interface to the Neotoma Paleoecological Database

Examining the uncertain origin and management role of martens on Prince of Wales Island, Alaska

Purifying selection does not drive signatures of convergent local adaptation of lodgepole pine and interior spruce

Contact Info

Product

Resources

About