Ecosystem-level dynamics of soil-vegetation features, with implications for conserving a narrowly endemic reptile

Dzialak, Matthew R.; Houchen, Dean J.; Harju, Seth M.; Mudd, James P.; Wondzell, John J.; Webb, Stephen L.; Gould, Nicholas P.; Hess, Jennifer E.; Winstead, Jeffrey B.

doi:10.1007/s10980-013-9888-7

Cited by 4 publications

(3 citation statements)

References 31 publications

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“…We know from phylogeographic studies that specialists in changing environments undergo repeated episodes of isolation and divergence [ 11 ]. While it is impossible to reconstruct the specific, chronological habitat configuration for the Mescalero Sands and Monahans Sandhills, it is likely that networks of suitable habitat have diverged and coalesced repeatedly over time (e.g., [ 67 ]). Source-sink dynamics are important at local and contemporary spatial and temporal scales [ 30 , 33 ], and this may translate to evolutionary patterns of population genetic structure at broader spatial scales and longer time scales.…”

Section: Discussionmentioning

confidence: 99%

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Chan

Painter²,

Hill

et al. 2020

PLoS ONE

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Phylogeographic divergence and population genetic diversity within species reflect the impacts of habitat connectivity, demographics, and landscape level processes in both the recent and distant past. Characterizing patterns of differentiation across the geographic range of a species provides insight on the roles of organismal and environmental traits in evolutionary divergence and future population persistence. This is particularly true of habitat specialists where habitat availability and resource dependence may result in pronounced genetic structure as well as increased population vulnerability. We use DNA sequence data as well as microsatellite genotypes to estimate range-wide phylogeographic divergence, historical population connectivity, and historical demographics in an endemic habitat specialist, the dunes sagebrush lizard ( Sceloporus arenicolus ). This species is found exclusively in dune blowouts and patches of open sand within the shinnery oak-sand dune ecosystem of southeastern New Mexico and adjacent Texas. We find evidence of phylogeographic structure consistent with breaks and constrictions in suitable habitat at the range-wide scale. In addition, we find support for a dynamic and variable evolutionary history across the range of S . arenicolus . Populations in the Monahans Sandhills have deeply divergent lineages consistent with long-term demographic stability. In contrast, populations in the Mescalero Sands are not highly differentiated, though we do find evidence of demographic expansion in some regions and relative demographic stability in others. Phylogeographic history and population genetic differentiation in this species has been shaped by the configuration of habitat patches within a geologically complex and historically dynamic landscape. Our findings identify regions as genetically distinctive conservation units as well as underscore the genetic and demographic history of different lineages of S . arenicolus .

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Section: Discussionmentioning

confidence: 99%

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Chan

Painter²,

Hill

et al. 2020

PLoS ONE

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show abstract

“…We know from phylogeographic studies that specialists in changing environments undergo repeated episodes of isolation and divergence (Roderick et al, 2012). While it is impossible to reconstruct the specific, chronological habitat configuration for the Mescalero Sands and Monahans Sandhills, it is likely that networks of suitable habitat have diverged and coalesced repeatedly over time (e.g., Dzialak et al, 2013). Source-sink dynamics are important at local and contemporary spatial and temporal scales (Ryberg et al, 2013;Walkup et al, 2019), and this may translate to evolutionary patterns of population genetic structure at broader spatial scales and longer time scales.…”

Section: Discussionmentioning

confidence: 99%

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Chan

Painter²,

Hill³

et al. 2020

Preprint

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29Phylogeographic divergence and population genetic diversity within species reflect 30 the impacts of habitat connectivity, demographics, and landscape level processes in both 31 the recent and distant past. Characterizing patterns of differentiation across the geographic 32 range of a species provides insight on the roles of organismal and environmental traits, on 33 evolutionary divergence, and future population persistence. This is particularly true of 34 habitat specialists where habitat availability and resource dependence may result in 35 pronounced genetic structure as well as increased population vulnerability. We use DNA 36 sequence data as well as microsatellite genotypes to estimate range-wide phylogeographic 37 divergence, historical population connectivity, and historical demographics in an endemic 38 habitat specialist, the dunes sagebrush lizard (Sceloporus arenicolus). This species is found 39 exclusively in dune blowouts and patches of open sand within the shinnery oak-sand dune 40 ecosystem of southeastern New Mexico and adjacent Texas. We find evidence of 41 phylogeographic structure consistent with breaks and constrictions in suitable habitat at 42 the range-wide scale. In addition, we find support for a dynamic and variable evolutionary 43 history across the range of S. arenicolus. Populations in the Monahans Sandhills have 44 deeply divergent lineages consistent with long-term demographic stability. In contrast, 45 populations in the Mescalero Sands are not highly differentiated, though we do find 46 evidence of demographic expansion in some regions and relative demographic stability in 47 others. Phylogeographic history and population genetic differentiation in this species has 48 been shaped by the configuration of habitat patches within a geologically complex and 49 historically dynamic landscape. Our findings identify regions as genetically distinctive 50 4 conservation units as well as underscore the genetic and demographic history of different 51 lineages of S. arenicolus. 52 53 Introduction 54 Patterns of population genetic diversity within species are shaped by both 55 evolutionary and contemporary history (Rissler, 2016). Though anthropogenic changes to 56 landscapes alter patterns of connectivity that can result in the divergence or coalescence of 57 populations, these processes take place on a background of evolutionary history 58 determined by chance, species' life history, and also geologic and climatic changes. 59 Characterizing this evolutionary history, and identifying the role that organismal traits, 60 evolutionary processes, and ecological conditions have on patterns of phylogeographic 61 divergence adds to our understanding of evolution, and is also fundamental to conserving 62 evolutionary potential in the face of anthropogenic disturbance and climate change 63 (Olivieri et al., 2015). 64 The phylogeographic history of species can reflect the roles that habitat 65 connectivity, gene flow, and population stability have played in a species' evolutionary 66 persistence....

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“…Each of these measurements describes how accurate the result is in relation to the real situation on the ground. The overall accuracy is the simplest statistic and describes the proportion of correctly predicted locations (Dzialak et al, 2013). The user's accuracy indicates the probability that a pixel classified on the map actually represents that category on the ground (Congalton, 1991;Story and Congalton, 1986).…”

Section: Accuracy Assessmentmentioning

confidence: 99%

Mapping land use on Irish peatlands using medium resolution satellite imagery

Connolly

2019

IrishGeog

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The EU is committed to quantifying greenhouse gas emissions and removals from land use, land use change and forestry, including wetlands. Wetlands and peatlands will play a central role in achieving temperature goals agreed in the Paris Agreement. Throughout Europe and particularly in Ireland, peatlands have been under severe strain for decades. Irish peatlands cover about 20.6% of the land and up to 85% are degraded. Medium resolution satellite data were analysed using a combination of object-based image assessment and peatland maps to produce land use maps for the 2005 to 2006 period. Four peatland land use types were detected: grassland, forestry, industrial peat production, and residual peat. Persistent cloud was an issue along the western seaboard and peatlands in these areas were excluded from the analysis. Despite this issue, the results show that 66% of peatlands have undergone land use change: 35% to grassland; 27% to forestry; and 4% to industrial. The overall map accuracy was 77%. The results could be used to aid the development of baseline data on peatland land use in Ireland for the 2005-2009 base period as required by the 2030 Climate and Energy Framework. The methodology may be used to quantify land use and land use change on peatlands across the EU.

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Ecosystem-level dynamics of soil-vegetation features, with implications for conserving a narrowly endemic reptile

Cited by 4 publications

References 31 publications

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist

Mapping land use on Irish peatlands using medium resolution satellite imagery

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