Rob Massatti
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View article: Suturing fragmented landscapes: Mosaic hybrid zones in plants may facilitate ecosystem resiliency
Suturing fragmented landscapes: Mosaic hybrid zones in plants may facilitate ecosystem resiliency Open
Many widespread plant taxa of western North America have diversified into phenotypically and genetically divergent lineages due to complex biogeographic histories across heterogeneous landscapes. Mosaic hybrid zones can form when geographi…
View article: The Cost of Self‐Defense: Browsing Effects in the Rare Plant Species <i>Salix arizonica</i>
The Cost of Self‐Defense: Browsing Effects in the Rare Plant Species <i>Salix arizonica</i> Open
Coevolution between plants and their animal predators has led to diverse defensive adaptations. Multiple theories of defense propose that there are resource allocation costs associated with producing chemical defenses. One leading hypothes…
View article: Intraspecific trait variability in wild plant populations predicts neither variability nor performance in a common garden
Intraspecific trait variability in wild plant populations predicts neither variability nor performance in a common garden Open
Dryland restoration requires plant materials capable of performing well despite difficult growing conditions. Selecting plant materials with higher intraspecific trait variability (ITV) may support successful outcomes by enhancing the perf…
View article: Matching existing and future native plant materials to disturbance‐driven restoration needs
Matching existing and future native plant materials to disturbance‐driven restoration needs Open
Assessing the appropriateness of existing native plant materials can both determine which seed source to utilize for restoration projects, and identify locations for which new seed sources need to be developed. Here, we demonstrate an appr…
View article: Evolutionary dynamics inform management interventions of a hanging garden obligate, Carex specuicola
Evolutionary dynamics inform management interventions of a hanging garden obligate, Carex specuicola Open
Uncovering the historical and contemporary processes shaping rare species with complex distributions is of growing importance due to threats such as habitat destruction and climate change. Species restricted to specialized, patchy habitat …
View article: Hybrid enrichment of adaptive variation revealed by genotype–environment associations in montane sedges
Hybrid enrichment of adaptive variation revealed by genotype–environment associations in montane sedges Open
The role of hybridization in diversification is complex and may result in many possible outcomes. Not only can hybridization produce new lineages, but those lineages may contain unique combinations of adaptive genetic variation derived fro…
View article: How to increase the supply of native seed to improve restoration success: the US native seed development process
How to increase the supply of native seed to improve restoration success: the US native seed development process Open
With the United Nations Decade on Ecosystem Restoration, restoration of damaged ecosystems is turning into a global movement. Restoration actions that are not based on science and an understanding of ecosystem function can thwart desired r…
View article: Demographic modeling informs functional connectivity and management interventions in Graham’s beardtongue
Demographic modeling informs functional connectivity and management interventions in Graham’s beardtongue Open
Functional connectivity (i.e., the movement of individuals across a landscape) is essential for the maintenance of genetic variation and persistence of rare species. However, illuminating the processes influencing functional connectivity a…
View article: Front Cover
Front Cover Open
The cover image relates to the Research Article https://doi.org/10.1111/ddi.13288 “The demographic and ecological factors shaping diversification among rare Astragalus species.” Cisco milkvetch (Astragalus sabulosus; Fabaceae), an incredib…
View article: The demographic and ecological factors shaping diversification among rare<i>Astragalus</i>species
The demographic and ecological factors shaping diversification among rare<i>Astragalus</i>species Open
Aim Evolutionary radiations are central to the origin and maintenance of biodiversity, yet we rarely understand how they are jointly shaped by demography and ecological opportunity. Astragalus is the largest plant genus in the world and is…
View article: Testing which axes of species differentiation underlie covariance of phylogeographic similarity among montane sedge species
Testing which axes of species differentiation underlie covariance of phylogeographic similarity among montane sedge species Open
Co-distributed species may exhibit similar phylogeographic patterns due to shared environmental factors or discordant patterns attributed to the influence of species-specific traits. Although either concordant or discordant patterns could …
View article: The historical context of contemporary climatic adaptation: a case study in the climatically dynamic and environmentally complex southwestern United States
The historical context of contemporary climatic adaptation: a case study in the climatically dynamic and environmentally complex southwestern United States Open
The process of adaptation can be highly dependent upon historical and contemporary factors, especially in environmentally and topographically complex regions affected by Pleistocene glaciations. Here, we investigate Hilaria jamesii (Poacea…
View article: Genetic analyses of <i>Astragalus</i> sect. <i>Humillimi</i> (Fabaceae) resolve taxonomy and enable effective conservation
Genetic analyses of <i>Astragalus</i> sect. <i>Humillimi</i> (Fabaceae) resolve taxonomy and enable effective conservation Open
Premise of the Study Astragalus sect. Humillimi is distributed across the southwestern United States and contains two endangered taxa, A. cremnophylax var. cremnophylax and A. humillimus . The former was originally described from the South…
View article: Population history provides foundational knowledge for utilizing and developing native plant restoration materials
Population history provides foundational knowledge for utilizing and developing native plant restoration materials Open
A species’ population structure and history are critical pieces of information that can help guide the use of available native plant materials in restoration treatments and decide what new native plant materials should be developed to meet…
View article: Contrasting support for alternative models of genomic variation based on microhabitat preference: species‐specific effects of climate change in alpine sedges
Contrasting support for alternative models of genomic variation based on microhabitat preference: species‐specific effects of climate change in alpine sedges Open
Deterministic processes may uniquely affect codistributed species’ phylogeographic patterns such that discordant genetic variation among taxa is predicted. Yet, explicitly testing expectations of genomic discordance in a statistical framew…
View article: Utilizing RADseq data for phylogenetic analysis of challenging taxonomic groups: A case study in <i>Carex</i> sect. <i>Racemosae</i>
Utilizing RADseq data for phylogenetic analysis of challenging taxonomic groups: A case study in <i>Carex</i> sect. <i>Racemosae</i> Open
PREMISE OF THE STUDY: Relationships among closely related and recently diverged taxa can be especially difficult to resolve. Here we use both Sanger sequencing and next‐generation RADseq data sets to estimate phylogenetic relationships amo…