Niche differentiation among small mammals of the Alexander Archipelago in southeastern Alaska

O’Brien, Shannon L; Cook, Joseph A.; Newsome, Seth D.

doi:10.1093/jmammal/gyx141

Cited by 6 publications

(6 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although these species are frequently sympatric, M. longicaudus (an herbivore) tends to prefer more open herbaceous habitats, P. keeni (an omnivore) typically occurs in forest and scrub habitats, and S. monticola (an insectivore) usually occupies forested and non‐forested habitats with dense ground cover (Van Horne, ; Smith & Belk, ; Smolen & Keller, ; Zheng, Arbogast, & Kenagy, ). The dietary isotopic niches of these species largely do not overlap as well (O'Brien, Cook, & Newsome, ). If all three species expanded from shared refugia, genetic signatures tracking their expansion histories may be congruent due to the common influence of climatic events (i.e., top‐down environmental control), regardless of specific ecological differences or niche requirements.…”

Section: Introductionmentioning

confidence: 99%

Living on the edge: Exploring the role of coastal refugia in the Alexander Archipelago of Alaska

Sawyer

MacDonald

Lessa

et al. 2019

Ecology and Evolution

View full text Add to dashboard Cite

Although islands are of long‐standing interest to biologists, only a handful of studies have investigated the role of climatic history in shaping evolutionary diversification in high‐latitude archipelagos. In this study of the Alexander Archipelago (AA) of Southeast Alaska, we address the impact of glacial cycles on geographic genetic structure for three mammals co‐distributed along the North Pacific Coast. We examined variation in mitochondrial and nuclear loci for long‐tailed voles ( Microtus longicaudus ), northwestern deermice ( Peromyscus keeni ), and dusky shrews ( Sorex monticola ), and then tested hypotheses derived from Species Distribution Models, reconstructions of paleoshorelines, and island area and isolation. In all three species, we identified paleoendemic clades that likely originated in coastal refugia, a finding consistent with other paleoendemic lineages identified in the region such as ermine. Although there is spatial concordance at the regional level for endemism, finer scale spatial and temporal patterns are less clearly defined. Demographic expansion across the region for these distinctive clades is also evident and highlights the dynamic history of Late Quaternary contraction and expansion that characterizes high‐latitude species.

show abstract

Section: Introductionmentioning

confidence: 99%

Living on the edge: Exploring the role of coastal refugia in the Alexander Archipelago of Alaska

Sawyer

MacDonald

Lessa

et al. 2019

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…Similarly, Revillagigedo and surrounding smaller islands are biogeographically distinct from the rest of the coastal mainland included in GMU1 (Hope et al 2016, Sawyer and Cook 2016). Biogeographic regions, delimited almost 20 years ago (MacDonald and Cook 1996, Cook et al 2006), have been empirically validated with a variety of data types, including morphology (Merriam 1897, Eger 1990, Colella et al 2018), molecules (Lucid and Cook 2004, Dawson et al 2007, Sawyer et al 2019, Colella et al 2021 a , Lan et al 2022), and ecology (Smith and Nichols 2004, O'Brien et al 2018, Roffler et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Biogeographic regions, delimited almost 20 years ago (MacDonald and , Cook et al 2006, have been empirically validated with a variety of data types, including morphology (Merriam 1897, Eger 1990, molecules (Lucid and Cook 2004, Dawson et al 2007, Sawyer et al 2019, Colella et al 2021a, Lan et al 2022, and ecology (Smith and Nichols 2004, O'Brien et al 2018, Roffler et al 2021.…”

Section: Recognition Of Biogeographic Regions Enables Coherent Manage...mentioning

confidence: 99%

Phylogeography of mammals in Southeast Alaska and implications for management of the Tongass National Forest

Androski,

Wiens,

Cook

et al. 2024

J Wildl Manag

View full text Add to dashboard Cite

Insular evolution on archipelagos generates a significant proportion of global biodiversity, yet islands are among the ecosystems most sensitive to accelerating anthropogenic disturbance, introductions of non‐native species, and emerging pathogens, among other conservation challenges. The Alexander and Haida Gwaii archipelagos along North America's North Pacific Coast support a disproportionate number of endemic taxa compared to other high‐latitude terrestrial ecosystems. In this region, endemics in Canada are explicitly protected, but in the United States, endemics have been operationally ignored. We reviewed regional research on terrestrial mammals and endemics from 2000–2022 to guide wildlife management. Elevated regional endemism is due to a combination of deep and shallow temporal processes (i.e., long‐term refugial isolation vs. recent colonization). With adequate sampling, genomic analyses are well‐suited to identifying nuanced patterns of divergence and endemism, thereby facilitating a deeper understanding of regional diversity. We identified 18 mammalian endemics in Southeast Alaska, USA, at varying taxonomic scales, but research effort has significant taxonomic biases and sampling infrastructure remains inadequate. Of the 66 terrestrial and aquatic mammal species in Southeast Alaska, only 55% are represented by ≥10 archived samples over the last 2 decades. Across taxa, major spatial and temporal sampling gaps limit interpretations of wildlife responses to changing environmental conditions. The Tongass National Forest is spread across an island archipelago, and climate change is projected to have disproportionate impacts on island endemics worldwide. In this case, the United States Forest Service is not closely monitoring endemic taxa, as was required by the Tongass Land Management Plan in 1997. Our review underscores a need for increased consideration of how endemism can be incorporated into land and wildlife management across the Alexander Archipelago. Moving forward, we encourage state and federal agencies, Indigenous communities, and international collaborators to continue to partner with natural history biorepositories to ensure strategic wildlife sampling infrastructure is built and made accessible to the broader scientific community as part of the land management process.

show abstract

“…BCP collecting methods ensure the preservation of high-quality samples that permit investigations spanning broad spatial and temporal scales, including topics such as deep phylogenetic relationships Koehler et al 2009b;Lanier and Olson 2009;Esteva et al 2010;Haukisalmi et al 2010;Kohli et al 2014), the mode and timing of speciation (Hope et al 2011(Hope et al , 2013, community assembly and faunal mixing through time (Cook et al 2006;Galbreath andHoberg 2012, 2015;Hoberg et al 2012a;Cook and MacDonald 2013;Hope et al 2015), demographic responses to regional climate through interactions with major biotic and abiotic forces (e.g., Hope et al 2014), conservation implications of population fragmentation and expansion (Small et al 2003;Cook and MacDonald 2013;, recurrent gene flow (Runck et al 2009;Lindqvist et al 2010;Miller et al 2012;McLean et al 2016b), and isotopic investigations of dietary niche space (O'Brien et al 2017). Museum specimens lend themselves to integrated approaches to science, especially sample-intensive fields of study that now are experiencing rapid technological and methodological advances (stable isotopes, disease ecology, and predictive modeling: McLean et al 2016a;Dunnum et al 2017).…”

Section: Uses Of Collectionsmentioning

confidence: 99%

The Beringian Coevolution Project: holistic collections of mammals and associated parasites reveal novel perspectives on evolutionary and environmental change in the North

et al. 2017

View full text Add to dashboard Cite

The Beringian Coevolution Project (BCP), a field program underway in the high northern latitudes since 1999, has focused on building key scientific infrastructure for integrated specimen-based studies on mammals and their associated parasites. BCP has contributed new insights across temporal and spatial scales into how ancient climate and environmental change have shaped faunas, emphasizing processes of assembly, persistence, and diversification across the vast Beringian region. BCP collections also represent baseline records of biotic diversity from across the northern high latitudes at a time of accelerated environmental change. These specimens and associated data form an unmatched resource for identifying hidden diversity, interpreting past responses to climate oscillations, documenting contemporary conditions, and anticipating outcomes for complex biological systems in a regime of ecological perturbation. Because of its dual focus on hosts and parasites, the BCP record also provides a foundation for comparative analyses that can document the effects of dynamic change on the geographic distribution, transmission dynamics, and emergence of pathogens. By using specific examples from carnivores, eulipotyphlans, lagomorphs, rodents, ungulates, and their associated parasites, we demonstrate how broad, integrated field collections provide permanent infrastructure that informs policy decisions regarding human impact and the effect of climate change on natural populations.

show abstract

Niche differentiation among small mammals of the Alexander Archipelago in southeastern Alaska

Cited by 6 publications

References 59 publications

Living on the edge: Exploring the role of coastal refugia in the Alexander Archipelago of Alaska

Living on the edge: Exploring the role of coastal refugia in the Alexander Archipelago of Alaska

Phylogeography of mammals in Southeast Alaska and implications for management of the Tongass National Forest

The Beringian Coevolution Project: holistic collections of mammals and associated parasites reveal novel perspectives on evolutionary and environmental change in the North

Contact Info

Product

Resources

About