CHELSA-TraCE21k – high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum

Karger, Dirk Nikolaus; Nobis, Michael; Normand, Signe; Graham, Catherine H.; Zimmermann, Niklaus E.

doi:10.5194/cp-19-439-2023

Cited by 82 publications

(45 citation statements)

References 97 publications

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“… Note : Databases are ordered from most recent to oldest period covered. Database references: 1 Karger et al (2023), 2 Fordham et al (2017), 3 Beyer et al (2020), 4 Krapp et al (2021), 5 Lima‐Ribeiro et al (2015), 6 Brown et al (2018), 7 Gamisch (2019), 8 Holden et al (2019) and the present paper. …”

Section: Introductionmentioning

confidence: 86%

PALEO‐PGEM‐Series: A spatial time series of the global climate over the last 5 million years (Plio‐Pleistocene)

Barreto

Holden

Edwards

et al. 2023

Global Ecol Biogeogr

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Section: Introductionmentioning

confidence: 86%

PALEO‐PGEM‐Series: A spatial time series of the global climate over the last 5 million years (Plio‐Pleistocene)

Barreto

Holden

Edwards

et al. 2023

Global Ecol Biogeogr

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“…We obtained current and historical climate data (BIOCLIM variables, e.g., Hijmans et al, 2005) from ‘rpaleoclim’ 0.9 (Brown et al, 2018). We focused on variables for current, last glacial maximum (LGM, ~20,000 ybp), and last interglacial (LIG, ~130,000 ybp) time periods (Karger et al, 2017, 2020, 2021; Otto‐Bliesner et al, 2006). Given the scale of the study, we used a relatively coarse resolution of 10 arc minutes.…”

Section: Methodsmentioning

confidence: 99%

Whole genome demographic models indicate divergent effective population size histories shape contemporary genetic diversity gradients in a montane bumble bee

Lozier

Strange

Heraghty

2023

Ecology and Evolution

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Understanding historical range shifts and population size variation provides an important context for interpreting contemporary genetic diversity. Methods to predict changes in species distributions and model changes in effective population size ( N e ) using whole genomes make it feasible to examine how temporal dynamics influence diversity across populations. We investigate N e variation and climate‐associated range shifts to examine the origins of a previously observed latitudinal heterozygosity gradient in the bumble bee Bombus vancouverensis Cresson (Hymenoptera: Apidae: Bombus Latreille) in western North America. We analyze whole genomes from a latitude‐elevation cline using sequentially Markovian coalescent models of N e through time to test whether relatively low diversity in southern high‐elevation populations is a result of long‐term differences in N e . We use Maxent models of the species range over the last 130,000 years to evaluate range shifts and stability. N e fluctuates with climate across populations, but more genetically diverse northern populations have maintained greater N e over the late Pleistocene and experienced larger expansions with climatically favorable time periods. Northern populations also experienced larger bottlenecks during the last glacial period, which matched the loss of range area near these sites; however, bottlenecks were not sufficient to erode diversity maintained during periods of large N e . A genome sampled from an island population indicated a severe postglacial bottleneck, indicating that large recent postglacial declines are detectable if they have occurred. Genetic diversity was not related to niche stability or glacial‐period bottleneck size. Instead, spatial expansions and increased connectivity during favorable climates likely maintain diversity in the north while restriction to high elevations maintains relatively low diversity despite greater stability in southern regions. Results suggest genetic diversity gradients reflect long‐term differences in N e dynamics and also emphasize the unique effects of isolation on insular habitats for bumble bees. Patterns are discussed in the context of conservation under climate change.

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“…To characterise the environmental conditions of quadrants, we extracted quadrant‐level average elevations from the digital elevation model (30 m Shuttle Radar Topography Mission DEM, http://10.0.19.202/F7PR7TFT; Figure 1c), modern mean annual temperature (MAT) and mean annual precipitation (MAP) from the CHELSA database, version 2.1 (Karger et al, 2017) and historical MAT over last eight millennia from CHELSA‐TraCE21k v1.0. database (Karger et al, 2021), and the representation of soil types in quadrants was obtained by spatial intersection with the soil map (Tomášek, 2003).…”

Section: Methodsmentioning

confidence: 99%

The diversity and distribution of introduced plant species reflect 8000 years of settlement history

et al. 2023

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Human population has affected natural ecosystems since prehistoric times in many ways, causing disturbances in existing ecosystems and creating novel habitats, and altering the colonisation and extinction rates with potentially long‐lasting effects on biodiversity. Here, we explored the pervasive effects of past human occupancy on present‐day diversity and the distribution of plant species introduced by humans in the distant past—archaeophytes—at the regional spatial scale. We analysed spatial relations between the present‐day species richness of archaeophytes and native flora, the environmental setting, archaeological evidence, and the relationship between the residence time of archaeophytes and their regional range size. We used fine‐scaled gridded information on plant diversity and archaeological records for the period 6000 BCE to 1000 CE summarised as average occupancy probability (AOP) in Czechia, Central Europe. The proportion of archaeophytes in the local flora positively correlated with AOP. Variation partitioning revealed largely overlapping effects of AOP, environmental conditions, and present‐day land use on the relative diversity of archaeophytes in local flora. The relationship between the minimum residence time of introduced species and their regional range size was non‐significant. Synthesis. Present‐day regional diversity of archaeophytes mirrored the intensity of past human settlements. Our results suggest that the main underlying mechanism is the environmental filtering of non‐native species pools, while dispersal limitation plays a minor role in the regional patterns of archaeophyte diversity.

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CHELSA-TraCE21k – high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum

Cited by 82 publications

References 97 publications

PALEO‐PGEM‐Series: A spatial time series of the global climate over the last 5 million years (Plio‐Pleistocene)

PALEO‐PGEM‐Series: A spatial time series of the global climate over the last 5 million years (Plio‐Pleistocene)

Whole genome demographic models indicate divergent effective population size histories shape contemporary genetic diversity gradients in a montane bumble bee

The diversity and distribution of introduced plant species reflect 8000 years of settlement history

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