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25 results for “Cumberland Plateau”
Hard edges, soft edges, and species range evolution: A genomic analysis of the Cumberland Plateau salamander
<p>Aim: Gene flow from central to edge populations is thought to limit population growth at range edges by constraining local adaptation. In this study, we explore the thesis that range edges can differ in their dynamics and be either "hard" (e.g. a river) or "soft" (e.g. ecological gradients). We hypothesize that soft edge populations will have smaller effective population sizes than central populations and that gene flow will be greater from the center to the edge than vice versa. Conversely, we hypothesize that hard edge populations should have similar effective population sizes to central populations and that gene flow will be equal between the two.</p> <p>Location: Kentucky, West Virginia, and Virginia, USA. Taxon: <em>Plethodon kentucki </em>(Caudata: Plethodontidae).</p> <p>Methods: We evaluated landscape suitability using an ecological niche model, then we compared gene flow and effective population sizes between edge and central populations and quantified gene flow between populations. Finally, we characterized landscape genetic variation, testing for isolation by distance and isolation by environment. Results: We found continuously decreasing habitat quality along soft edges, with hard edges more variable. Additionally, we found that soft edges had lower effective population sizes than central populations and that gene flow was greater from the center of the range to the soft edges than the reverse. In hard edges, by contrast, we found effective population sizes in edge populations were similar to central populations, with relatively equal gene flow in both directions.</p> <p>Main conclusions: Understanding why species have range limits is central to investigations of the structure of biodiversity, yet the evolutionary dynamics of range edges remain poorly understood. We show that within a single species with a small range, the evolutionary dynamics operating at range boundaries may depend on the nature of the boundary.</p>
Hard edges, soft edges, and species range evolution: A genomic analysis of the Cumberland Plateau salamander
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Walker Branch Watershed site, station Tennessee Division 2, Cumberland Plateau, study of Palmer Drought Severity Index in units of dimensionless on a monthly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Walker Branch Watershed (WBW) contains Palmer Drought Severity Index measurements in dimensionless units and were aggregated to a monthly timescale.
Walker Branch Watershed site, station Tennessee Division 2, Cumberland Plateau, study of Palmer Drought Severity Index in units of dimensionless on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Walker Branch Watershed (WBW) contains Palmer Drought Severity Index measurements in dimensionless units and were aggregated to a yearly timescale.
FIGURES 16–23. Pseudotremia roebuckorum, n in Cumberland Plateau (Diplopoda: Chordeumatida: Cleidogonidae)
FIGURES 16–23. Pseudotremia roebuckorum, n. sp., Fallen Entrance Cave, Fentress Co., Tennessee: (16) anterior gonopods, anterior aspect, (17) anterior gonopods, lateral aspect, (18) leg 9, (19) cyphopod. Pseudotremia wallaceae, n. sp., Frog Cave, Pickett Co., Tennessee: (20) anterior gonopods, anterior aspect, (21) anterior gonopods, lateral aspect, (22) leg 9, (23) cyphopod.
FIGURES 9–15. Pseudotremia hollidayi, n in Cumberland Plateau (Diplopoda: Chordeumatida: Cleidogonidae)
FIGURES 9–15. Pseudotremia hollidayi, n. sp., Keyhole Cave, Sequatchie Co., Tennessee: (9) anterior gonopods, anterior aspect, (10) anterior gonopods, lateral aspect, (11) leg 9. Pseudotremia manni, n. sp., Baileys Webb Cave, Overton Co., Tennessee: (12) anterior gonopods, anterior aspect, (13) anterior gonopods, lateral aspect, (14) leg 9, (15) cyphopod.
FIGURES 1–8. Pseudotremia barri, n in Cumberland Plateau (Diplopoda: Chordeumatida: Cleidogonidae)
FIGURES 1–8. Pseudotremia barri, n. sp., Trussell Cave, Grundy Co., Tennessee: (1) anterior gonopods, anterior aspect, (2) anterior gonopods, lateral aspect, (3) leg 9, (4) cyphopod. Pseudotremia garlandae, n. sp., Redbud Cave, Fentress Co., Tennessee: (5) anterior gonopods, anterior aspect, (6) anterior gonopods, lateral aspect, (7) syncolpocoxite process, lateral, (8) leg 9.
FIGURES 3A–D. Allocapnia recta. A in Allocapnia tsalagi, sp. n. and notes on A. recta (Claassen) from the Cumberland Plateau region of northeastern Alabama, U. S. A.
FIGURES 3A–D. Allocapnia recta. A, Male terminalia, dorsal, SEM micrograph, 150X; B, Male terminalia, dorsal, SEM micrograph, 1000X; C, Male terminalia, dorsolateral, SEM micrograph, 350X; D, Male terminalia, dorsolateral, SEM micrograph, 1000X.
FIGURES 2A–F. Allocapnia malverna, U.S.A in Allocapnia tsalagi, sp. n. and notes on A. recta (Claassen) from the Cumberland Plateau region of northeastern Alabama, U. S. A.
FIGURES 2A–F. Allocapnia malverna, U.S.A., Arkansas, Calhoun Co., Champagnelle Creek and A. mohri (Ross & Ricker), U.S.A., Oklahoma, Pittsburg Co., tributary to Brushy Creek. A, A. malverna, male terminalia, dorsal, SEM micrograph, 350X; B, A. mohri, male terminalia, dorsal, SEM micrograph, 350X; C, A. mohri, male terminalia, lateral, SEM micrograph, 200X; D, A. mohri, male terminalia, lateral, SEM micrograph, 500X; E, A. malverna, male terminalia, lateral, SEM micrograph, 150X; F, A. malverna, male terminalia, lateral, SEM micrograph, 500X.
FIGURES 1A–F in Allocapnia tsalagi, sp. n. and notes on A. recta (Claassen) from the Cumberland Plateau region of northeastern Alabama, U. S. A.
FIGURES 1A–F. Allocapnia tsalagi sp. nov. A, Male terminalia, dorsal, SEM micrograph, 350X; B, Male terminalia, dorsolateral, SEM micrograph, 1000X; C, Male terminalia, lateral, SEM micrograph, 150X; D, Male terminalia, lateral, SEM micrograph, 1000X; E, Male terminalia, dorsal, SEM micrograph, 200X; F, Female terminalia, ventral.
Data from: Phylogenetic and morphological diversity of the Etheostoma zonistium species complex with the description of a new species endemic to the Cumberland Plateau of Alabama
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Figures 2 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 2 - Zealeuctra cherokee, scanning election micrographs, USA, Oklahoma, Adair Co., 9 mi S Stillwell, Hwy 59, 20 February 1972. A male, cleft, dorsal view, 200× B male, abdominal terminalia, lateral view, 350× C female, posteromedial portion of seventh abdominal sternite, 350×.
Figures 9 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 9 - Zealeuctra wachita, scanning electron micrographs, USA, Oklahoma, LeFlore Co., tributary to Big Creek, 6 February 2003 (A, B, D), USA, Arkansas, Scott Co., Johnson Creek, 6 January 1999 (C). A male, cleft, dorsal view, 200× B–C male, epiproct, lateral view, 350× or 500× D female, posteromedial portion of seventh abdominal sternite, 350×.
Figures 10 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 10 - Zealeuctra warreni, scanning electron micrographs, USA, Arkansas, Polk Co., Rock Creek, 26 November 1983 (A), USA, Arkansas, Scott Co., Johnson Creek, 6 January 1999 (B–D). A male, cleft, dorsal view, 200× B male, epiproct, lateral view, 350× C male, tip of anterior accessory spine, anterior view, 3500× D female, posteromedial portion of seventh abdominal sternite, 350×.
Figures 6 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 6 - Zealeuctra narfi, scanning electron micrographs, USA, Missouri, Barry Co., East Fork Rock Creek, 16 March 2004. A male, cleft, dorsal view, 350×(B male, abdominal terminalia, lateral view, 200× C male, epiproct, lateral view, 500× D female, posteromedial portion of seventh abdominal sternite, 350×.
Figures 8 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 8 - Zealeuctra ukayodi, sp. n., scanning electron micrographs, USA, Alabama, Jackson Co., Poplar Spring, 16 March 2008 (A–D, F–J), USA, Tennessee, Grundy Co., tributary to Elk River, 12 February 2007 (E). A–B male, cleft, dorsal view, 200× C–E male, epiproct, lateral view, 350× or 500× F female, posteromedial portion of seventh abdominal sternite, 350× G male terminalia, lateral H male terminalia, dorsal I male terminalia, ventral J female terminalia, ventral.
Figures 7 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 7 - Zealeuctra talladega, scanning electron micrographs, USA, Alabama, Clay Co., tributary to Swept Creek, 24 January 2006 (A–B, D–E, G), USA, Alabama, Clay Co., tributary to West Fork Hatchet Creek, 25 January 2006 (C, F, H). A–C male, cleft, dorsal view, 350× D–F male, epiproct, lateral view, 500× G–H female, posteromedial portion of seventh abdominal sternite, 350×.
Figure 13 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figure 13 - Distribution map for Zealeuctra stewarti, Zealeuctra talladega, Zealeuctra ukayodi sp. n., and Zealeuctra warreni.
Figures 1 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 1 - Zealeuctra arnoldi, scanning electron micrographs, USA, Texas, Uvalde Co., Cherry Creek, 3 April 2004. A male, cleft, dorsal view, 350× B male, epiproct, lateral view, 500× C male, epiproct, lateral view, 500× D female, posteromedial portion of seventh abdominal sternite, 200×.
Figures 5 from: Grubbs S, Kondratieff B, Stark B, DeWalt R (2013) A review of the Nearctic genus Zealeuctra Ricker (Plecoptera, Leuctridae), with the description of a new species from the Cumberland Plateau region of eastern North America. ZooKeys 344: 17-47. https://doi.org/10.3897/zookeys.344.5912
Figures 5 - Zealeuctra hitei, scanning electron micrographs, USA, Texas, Kimble Co., Sycamore Creek, 14 December 1989. A male, cleft, dorsal view, 350× B male, epiproct, lateral view, 500× C female, posteromedial portion of seventh abdominal sternite, 350×.
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