Paul J Valdes

Biographic Data

ID3444364
NAMEPaul J Valdes
GIVEN NAMESPaul J
FAMILY NAMEValdes
SIGNATUREVALDES P J
AFFILIATIONSUniversity of Bristol
ORCID0000-0002-1902-3283
VERIFIEDYes
TOTAL WORKS12
TOTAL CITATIONS86
AUTHOR COUNT12
EDITOR COUNT0
FIRST PUBLICATION YEAR2006
LATEST PUBLICATION YEAR2025
H-INDEX3

  • STEM career interest development and persistence

    Open AccessElizabeth Dorrance-Hall, Yue Zhang et al.ARTICLEAnnals of the International…2025References: 20

    Parent–child communication is an essential part of developing and sustaining career interests. Parents’ involvement in the process of career interest development and persistence of women in STEM is critical to understand to marshal support for women entering high-barrier fields. This manuscript answers 3 questions about how parents are involved in the processes of career interest development and persistence: What do parents do? What do parents sa…

  • Tropical vegetation productivity and atmospheric methane over the last 40,000 years from model simulations and stalagmites in Sulawesi, Indonesia

    Open AccessClaire E Krause, Alena K Kimbrough et al.ARTICLEQuaternary Research2024

    Recent research has shown the potential of speleothem δ 13 C to record a range of environmental processes. Here, we report on 230 Th-dated stalagmite δ 13 C records for southwest Sulawesi, Indonesia, over the last 40,000 yr to investigate the relationship between tropical vegetation productivity and atmospheric methane concentrations. We demonstrate that the Sulawesi stalagmite δ 13 C record is driven by changes in vegetation productivity and soi…

  • Investigating environmental effects on phonology using diachronic models

    Open AccessFrederik Hartmann, Seán G Robert et al.ARTICLEEvolutionary Human Sciences2024Cited by: 1References: 6

    Previous work has proposed various mechanisms by which the environment may affect the emergence of linguistic features. For example, dry air may cause careful control of pitch to be more effortful, and so affect the emergence of linguistic distinctions that rely on pitch such as lexical tone or vowel inventories. Criticisms of these proposals point out that there are both historical and geographic confounds that need to be controlled for. We take…

  • Green Sahara tipping points in transient climate model simulations of the Holocene

    Open AccessPeter O Hopcroft, Paul J ValdesARTICLEEnvironmental Research Letters2022

    The ‘Greening’ and subsequent desertification of the Sahara during the early to mid-Holocene is a dramatic example of natural climate change. We analyse a suite of simulations with a newly palaeo-conditioned configuration of the HadCM3 coupled model that is able to capture an abrupt desertification of North Africa during this time. We find that this model crosses a threshold of moisture availability for vegetation at around 6000 years before pres…

  • Out of Amazonia

    Open AccessJ Iriarte, Richard J Smith et al.ARTICLEThe Holocene2016Cited by: 23References: 24

    The late-Holocene expansion of the Tupi-Guarani languages from southern Amazonia to SE South America constitutes one of the largest expansions of any linguistic family in the world, spanning ~4000 km between latitudes 0°S and 35°S at about 2.5k cal. yr BP. However, the underlying reasons for this expansion are a matter of debate. Here, we compare continental-scale palaeoecological, palaeoclimate and archaeological datasets, to examine the role of…

  • Genomic evidence for the Pleistocene and recent population history of Native Americans

    Open AccessMaanasa Raghavan, Matthias Steinrücken et al.ARTICLEScience2015

    Genetic history of Native Americans Several theories have been put forth as to the origin and timing of when Native American ancestors entered the Americas. To clarify this controversy, Raghavan et al. examined the genomic variation among ancient and modern individuals from Asia and the Americas. There is no evidence for multiple waves of entry or recurrent gene flow with Asians in northern populations. The earliest migrations occurred no earlier…

  • Full effects of land use change in the representative concentration pathways

    Open AccessTaraka Davies‐Barnard, T Davies-Barnard et al.ARTICLEEnvironmental Research Letters2014

    Future land use change (LUC) is an important component of the IPCC representative concentration pathways (RCPs), but in these scenarios' radiative forcing targets the climate impact of LUC only includes greenhouse gases. However, climate effects due to physical changes of the land surface can be as large. Here we show the critical importance of including non-carbon impacts of LUC when considering the RCPs. Using an ensemble of climate model simul…

  • Species-specific responses of Late Quaternary megafauna to climate and humans

    Open AccessEline D Lorenzen, David Nogués‐bravo et al.ARTICLENature2011

  • Assessing the mitigation potential of forestry activities in a changing climate

    Open AccessKaysara Khatun, Paul J Valdes et al.ARTICLEForest Policy and Economics2010Cited by: 3References: 2

  • Modelling of hydrology and potential population levels at Bronze Age Jawa, Northern Jordan

    Open AccessP G Whitehead, Samuel Smith et al.ARTICLEJournal of Archaeological Science2007Cited by: 8References: 6

  • Investigating early hominin dispersal patterns

    Open AccessJohn K Hughes, Alan Haywood et al.ARTICLEJournal of Human Evolution2007Cited by: 51References: 44

  • A review of palaeoclimates and palaeoenvironments in the Levant and Eastern Mediterranean from 25,000 to 5000 years BP

    Open AccessStuart A Robinson, Stuart Black et al.ARTICLEQuaternary Science Reviews2006