The Chihuahuan Desert: A Binational Conservation Response to Protect a Global Treasure

Briggs, Mark K.; Lozano-Cavazos, Eloy Alejandro; Poulos, Helen M.; Ochoa-Espinoza, Javier; Rodríguez-Pineda, J. Alfredo

doi:10.1016/b978-0-12-409548-9.11966-9

Cited by 11 publications

(12 citation statements)

References 25 publications

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“…The removal of vegetation cover and increased soil erosion and removal from upper hillside watershed surfaces has occurred due to overgrazing, urban growth, agricultural growth, creation of roads, construction, and other human activities [69]. Unrestricted access to land resources can result in overexploitation and degradation of the resource [13].…”

Section: Overgrazingmentioning

confidence: 99%

“…By following the Global Assessment of Soil Degradation (GLASOD), three classes of grassland degradation were considered, each corresponding to a different percentage of plant basal cover, that included 75-100% for "lightly degraded", 50-75% for "moderately degraded", and below 25% for "heavy degraded", as well as easy to access data including the use of remote sensing [95]. This helped to assess SOCL losses between the twenty-eight studies regarding undegraded and degraded grassland which was calculated as follows [69].…”

Section: Overgrazingmentioning

confidence: 99%

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Impact of Ex-Closure in above and below Ground Carbon Stock Biomass

Tsegay

Meng

2021

Forests

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Globally, there is a serious issue in carbon stock due to high deforestation and the loss of land, limited carbon storage pools in aboveground and underground forests in different regions, and increased carbon emissions to the atmosphere. This review paper highlights the impact of exclosures on above and below ground carbon stocks in biomass as a solution to globally curb carbon emissions. The data has been analyzed dependent on the Intergovernmental Panel on Climate Change (IPCC) guidelines, the Food and Agriculture Organization (FAO) Forest Resource Assessment report (FRA, 2020), and scientific journal publications mostly from the last decade, to show the research results of carbon stock and the impact of exclosures, particularly the challenges of deforestation and erosion of land and opportunities of area exclosures to provide a general outlook for policymakers. Overall, the world’s forest regions are declining, and although the forest loss rate has slowed, it has still not stopped sufficiently because the knowledge and practice of exclosures are limited. The global forest loss and carbon stock have decreased from 7.8 million ha/yr to 4.7 million ha/yr and from 668 gigatons to 662 gigatons respectively due to multiple factors that differ across the regions. However, a move toward natural rehabilitation and exclosures to reduce the emissions of Greenhouse Gas (GHGs) is needed. In the global production of carbon, the exclosure of forests plays an important role, in particular for permanent sinks of carbon.

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Section: Overgrazingmentioning

confidence: 99%

Section: Overgrazingmentioning

confidence: 99%

Impact of Ex-Closure in above and below Ground Carbon Stock Biomass

Tsegay

Meng

2021

Forests

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“…This study focuses on the genetic diversity of squamates from the southern United States and north-central Mexico in two regions that were climatically suitable during the Last Glacial Maximum (LGM; Waltari et al 2007), but differ in their topographic complexity (Badgley et al 2017). We investigated species primarily from the North American Coastal Plain and the Chihuahuan Desert, both of which harbor high reptile diversity (Jenkins et al 2015) and are currently under threat from habitat fragmentation, climate change, and change in wildfire regimes (Archer and Predick 2008; Noss et al 2015; Briggs et al 2020). The North American Coastal Plain includes the Gulf and Atlantic coasts in the southeastern United States and has been described as a biodiversity hotspot (Noss et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Predictors of genomic diversity within North American squamates

Larkin

Myers

Carstens

et al. 2022

Preprint

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Comparisons of intraspecific genetic diversity across species can reveal the roles of geography, ecology, and life history in shaping biodiversity. The wide availability of mitochondrial DNA (mtDNA) sequences in open-access databases makes this marker practical for conducting analyses across several species in a common framework, but patterns may not be representative of overall species diversity. Here, we gather new and existing mtDNA sequences and genome-wide nuclear data (genotyping-by-sequencing; GBS) for 30 North American squamate species sampled in the Southeastern and Southwestern United States. We estimated mtDNA nucleotide diversity for two mtDNA genes, COI (24 species alignments; average 16 sequences) and cytb (22 species; average 76 sequences), as well as nuclear heterozygosity and nucleotide diversity from GBS data for 119 individuals (30 species; four individuals and 6,820-44,309 loci per species). We showed that nuclear genomic diversity estimates were highly consistent across individuals for some species, while other species showed large differences depending on the locality sampled. Range size was positively correlated with both cytb diversity (Phylogenetically Independent Contrasts: R2 = 0.21, p = 0.03) and GBS diversity (R2 = 0.19; p = 0.02), while other predictors differed across the top models for each dataset. Mitochondrial and nuclear diversity estimates were not correlated within species, although sampling differences in the data available made these datasets difficult to compare. As new genome-wide datasets continue to be generated, mtDNA and nuclear diversity within species should be investigated to better understand the predictors of diversity across a variety of taxonomic groups.

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“…The Chihuahuan Desert is home to more than 826 taxa, with particularly high species diversity in plants and reptiles (Villarreal-Quintanilla 2017). In the United States, the Chihuahuan Desert covers parts of Southwest Texas, in addition to Southeast New Mexico and Arizona, with the majority of the desert laying within the Mexican states of Chihuahua, Coahuila, Durango, San Luis Potosi, and Zacatecas (Briggs et al 2019). The desert also covers three protected areas on the Mexican side of the RGB-Cañon de Santa Elena, Ocampo, and Maderas del Carmen -and three protected areas on the U.S. side-Big Bend National Park, Big Bend State Park, and Black Gap Wildlife Management Area (Figure 1).…”

Section: Thesis Study Areamentioning

confidence: 99%

“…The Big Bend reach of the RGB is included in the Northern section of the Chihuahuan Desert, which is characterized by grasslands and desert scrub vegetation (Cotera et al 2012). The Chihuahuan Desert has warm summers and cool dry winters, with the majority of its precipitation coming from the summer monsoonal rains that can annually range from 150 to 500 mm (Briggs et al 2019).…”

Section: Thesis Study Areamentioning

confidence: 99%

The Rolling Riparian Review: Evaluating the Riparian Plant Community Composition in the Big Bend Reach of the Rio Grande/Bravo

Detre¹

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The Chihuahuan Desert: A Binational Conservation Response to Protect a Global Treasure

Cited by 11 publications

References 25 publications

Impact of Ex-Closure in above and below Ground Carbon Stock Biomass

Impact of Ex-Closure in above and below Ground Carbon Stock Biomass

Predictors of genomic diversity within North American squamates

The Rolling Riparian Review: Evaluating the Riparian Plant Community Composition in the Big Bend Reach of the Rio Grande/Bravo

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