Assessing Potential Seed Transfer Zones for Five Forb Species from the Great Basin Floristic Region, USA

Kramer, Andrea T.; Larkin, Daniel J.; Fant, Jeremie B.

doi:10.3375/043.035.0119

Cited by 25 publications

(34 citation statements)

References 54 publications

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“…In general, populations from colder climates displayed greater dormancy and required more chilling time to germinate. These results are consistent with seed germination studies of other species across the Intermountain West (e.g., Penstemon and Eriogonum species [Kramer et al 2015] and Allium species [Phillips et al 2010]). Similar variation in seed dormancy has been shown to be adaptive (Huang et al 2010) but may also be due, at least in part, to plastic responses experienced during seed maturation at each study site (Munir et al 2001).…”

Section: Discussionsupporting

confidence: 91%

“…lutea (Kramer et al 2015). In fact, previous common garden studies of forbs in the western United States have shown that these Level III Ecoregions can capture substantial (but not all) phenotypic variation present in a species being targeted for restoration, and therefore may serve as a useful minimum guide for seed transfer (Miller et al 2011, Kramer et al 2015 population means that were as great within ecoregions as between them for all traits with significant population differentiation except seed germination.…”

Section: Discussionmentioning

confidence: 96%

“…In fact, previous common garden studies of forbs in the western United States have shown that these Level III Ecoregions can capture substantial (but not all) phenotypic variation present in a species being targeted for restoration, and therefore may serve as a useful minimum guide for seed transfer (Miller et al 2011, Kramer et al 2015 population means that were as great within ecoregions as between them for all traits with significant population differentiation except seed germination. This suggests that Level III Ecoregions are too large to effectively group among-population variation in this species into transfer zones, as has been found for many other forb species native to this region (Bower et al 2014, Kramer et al 2015. For C. lutea var.…”

Section: Discussionmentioning

confidence: 97%

“…To accommodate for this lack of research, Omernik's Level III Ecoregions (Omernik 1987) have been suggested for use as minimum seed transfer zones in the Intermountain West (Johnson et al 2010a). Recent research shows that these proxy seed zones can capture at least some of the variation found among the populations of widespread perennial forbs in the Great Basin (Miller et al 2011, Kramer et al 2015, but that smaller Provisional Seed Zones (Bower et al 2014) are generally more effective at capturing variation.…”

mentioning

confidence: 99%

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Population Differentiation in Early Life History Traits ofCleome luteavar.Luteain the Intermountain West

Hintz

Eshleman²,

Foxx³

et al. 2016

Western North American Naturalist

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 99%

See 2 more Smart Citations

Population Differentiation in Early Life History Traits ofCleome luteavar.Luteain the Intermountain West

Hintz

Eshleman²,

Foxx³

et al. 2016

Western North American Naturalist

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“…There are many processes that can reduce or prevent the development of local adaptation, such as the lack of divergent selection between sites, high gene flow, rapid or extreme environmental change, high phenotypic plasticity, and/or low genetic diversity (Blows & Hoffmann, 2005;Kawecki & Ebert, 2004;Sultan & Spencer, 2002 (Kramer, Larkin, & Fant, 2015), Penstemon deustus and e), experiment 297A, , Eriogonum microthecum. Similarly, flowering time and MAT (f) is shown, with examples of g) experiment 271A, (Larsen, 1947), Schizachyrium scoparium, and h) experiment 245A, (Ward, 1969), Deschampsia caespitosa.…”

Section: Total (592)mentioning

confidence: 99%

Strong patterns of intraspecific variation and local adaptation in Great Basin plants revealed through a review of 75 years of experiments

Baughman

Agneray

Forister

et al. 2019

Ecology and Evolution

112

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Variation in natural selection across heterogeneous landscapes often produces (a) among‐population differences in phenotypic traits, (b) trait‐by‐environment associations, and (c) higher fitness of local populations. Using a broad literature review of common garden studies published between 1941 and 2017, we documented the commonness of these three signatures in plants native to North America's Great Basin, an area of extensive restoration and revegetation efforts, and asked which traits and environmental variables were involved. We also asked, independent of geographic distance, whether populations from more similar environments had more similar traits. From 327 experiments testing 121 taxa in 170 studies, we found 95.1% of 305 experiments reported among‐population differences, and 81.4% of 161 experiments reported trait‐by‐environment associations. Locals showed greater survival in 67% of 24 reciprocal experiments that reported survival, and higher fitness in 90% of 10 reciprocal experiments that reported reproductive output. A meta‐analysis on a subset of studies found that variation in eight commonly measured traits was associated with mean annual precipitation and mean annual temperature at the source location, with notably strong relationships for flowering phenology, leaf size, and survival, among others. Although the Great Basin is sometimes perceived as a region of homogeneous ecosystems, our results demonstrate widespread habitat‐related population differentiation and local adaptation. Locally sourced plants likely harbor adaptations at rates and magnitudes that are immediately relevant to restoration success, and our results suggest that certain key traits and environmental variables should be prioritized in future assessments of plants in this region.

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Landscape genetic approaches to guide native plant restoration in the Mojave Desert

Shryock

Havrilla

DeFalco

et al. 2017

Ecological Applications

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Restoring dryland ecosystems is a global challenge due to synergistic drivers of disturbance coupled with unpredictable environmental conditions. Dryland plant species have evolved complex life-history strategies to cope with fluctuating resources and climatic extremes. Although rarely quantified, local adaptation is likely widespread among these species and potentially influences restoration outcomes. The common practice of reintroducing propagules to restore dryland ecosystems, often across large spatial scales, compels evaluation of adaptive divergence within these species. Such evaluations are critical to understanding the consequences of large-scale manipulation of gene flow and to predicting success of restoration efforts. However, genetic information for species of interest can be difficult and expensive to obtain through traditional common garden experiments. Recent advances in landscape genetics offer marker-based approaches for identifying environmental drivers of adaptive genetic variability in non-model species, but tools are still needed to link these approaches with practical aspects of ecological restoration. Here, we combine spatially explicit landscape genetics models with flexible visualization tools to demonstrate how cost-effective evaluations of adaptive genetic divergence can facilitate implementation of different seed sourcing strategies in ecological restoration. We apply these methods to Amplified Fragment Length Polymorphism (AFLP) markers genotyped in two Mojave Desert shrub species of high restoration importance: the long-lived, wind-pollinated gymnosperm Ephedra nevadensis, and the short-lived, insect-pollinated angiosperm Sphaeralcea ambigua. Mean annual temperature was identified as an important driver of adaptive genetic divergence for both species. Ephedra showed stronger adaptive divergence with respect to precipitation variability, while temperature variability and precipitation averages explained a larger fraction of adaptive divergence in Sphaeralcea. We describe multivariate statistical approaches for interpolating spatial patterns of adaptive divergence while accounting for potential bias due to neutral genetic structure. Through a spatial bootstrapping procedure, we also visualize patterns in the magnitude of model uncertainty. Finally, we introduce an interactive, distance-based mapping approach that explicitly links marker-based models of adaptive divergence with local or admixture seed sourcing strategies, promoting effective native plant restoration.

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Assessing Potential Seed Transfer Zones for Five Forb Species from the Great Basin Floristic Region, USA

Cited by 25 publications

References 54 publications

Population Differentiation in Early Life History Traits ofCleome luteavar.Luteain the Intermountain West

Population Differentiation in Early Life History Traits ofCleome luteavar.Luteain the Intermountain West

Strong patterns of intraspecific variation and local adaptation in Great Basin plants revealed through a review of 75 years of experiments

Landscape genetic approaches to guide native plant restoration in the Mojave Desert

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