David A Hodell
Dados Biográficos
| ID | 231785 |
|---|---|
| NOME | David A Hodell |
| PRENOMES | David A |
| SOBRENOME | Hodell |
| ASSINATURA | HODELL D A |
| AFILIAÇÕES | University of Florida |
| ORCID | 0000-0001-8537-1588 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 19 |
| TOTAL DE CITAÇÕES | 213 |
| TOTAL COMO AUTOR | 19 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1991 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2017 |
| ÍNDICE H | 5 |
AD 750–1100 Climate Change and Critical Transitions in Classic Maya Sociopolitical Networks
Multiple palaeoclimatic reconstructions point to a succession of major droughts in the Maya Lowlands between AD 750 and 1100 superimposed on a regional drying trend that itself was marked by considerable spatial and temporal variability. The longest and most severe regional droughts occurred between AD 800 and 900 and again between AD 1000 and 1100. Well-dated historical records carved on stone monuments from forty Classic Period civic-ceremonial…
Adaptation to Variable Environments, Resilience to Climate Change
This paper explores the nature and dynamics of adaptation and resilience in the face of a diverse and varied environmentaland ecological context using the case study of South Asias Indus Civilization (ca. 30001300 BC). Most earlycomplex societies developed in regions where the climatic parameters faced by ancient subsistence farmers were variedbut rain falls primarily in one season. In contrast, the Indus Civilization developed in a specific envi…
The complexity of millennial-scale variability in southwestern Europe during MIS 11
Climatic variability of Marine Isotope Stage (MIS) 11 is examined using a new high-resolution direct land—sea comparison from the SW Iberian margin Site U1385. This study, based on pollen and biomarker analyses, documents regional vegetation, terrestrial climate and sea surface temperature (SST) variability. Suborbital climate variability is revealed by a series of forest decline events suggesting repeated cooling and drying episodes in SW Iberia…
Abrupt weakening of the summer monsoon in northwest India 4100 yr ago
Climate change has been suggested as a possible cause for the decline of urban centers of the Indus Civilization ~4000 yr ago, but extant paleoclimatic evidence has been derived from locations well outside the distribution of Indus settlements. Here we report an oxygen isotope record of gastropod aragonite ( 18 O a ) from Holocene sediments of paleolake Kotla Dahar (Haryana, India), which is adjacent to Indus settlements and documents Indian summ…
Climate drying and associated forest decline in the lowlands of northern Guatemala during the late Holocene
Palynological studies document forest disappearance during the late Holocene in the tropical Maya lowlands of northern Guatemala. The question remains as to whether this vegetation change was driven exclusively by anthropogenic deforestation, as previously suggested, or whether it was partly attributable to climate changes. We report multiple palaeoclimate and palaeoenvironment proxies (pollen, geochemical, sedimentological) from sediment cores c…
Quantification of soil erosion rates related to ancient Maya deforestation
We used seismic and sediment core data to quantify soil erosion rates for the past ~6000 yr in the closed catchment of Lake Salpetén, in the tropical lowlands of northern Guatemala. The region was affected by ancient Maya land use from before ca. 1000 B.C. to A.D. 900. This period of human impact coincided with deposition in the lake of a detrital unit (Maya Clay) as much as 7 m thick that contrasts sharply with the relatively organic-rich gyttja…
Climate change on the Yucatan Peninsula during the Little Ice Age
We studied a 5.1-m sediment core from Aguada X'caamal (20° 36.6′N, 89° 42.9′W), a small sinkhole lake in northwest Yucatan, Mexico. Between 1400 and 1500 A.D., oxygen isotope ratios of ostracod and gastropod carbonate increased by an average of 2.2‰ and the benthic foraminifer Ammonia beccarii parkinsoniana appeared in the sediment profile, indicating a hydrologic change that included increased lake water salinity. Pollen from a core in nearby Ce…
Terminal Classic drought in the northern Maya lowlands inferred from multiple sediment cores in Lake Chichancanab (Mexico)
Spatial variation of strontium isotopes (87Sr/86Sr) in the Maya region
A 4000-Year Lacustrine Record of Environmental Change in the Southern Maya Lowlands, Petén, Guatemala
A 4000-yr sediment core record from Lake Salpetén, Guatemala, provides evidence for Maya-induced forest clearance and consequent soil erosion between ∼1700 cal yr B.C. and 850 cal yr A.D. Radiocarbon ages of wood, seeds, and charcoal support an age-depth model with average errors of ±110 cal yr. Relatively low carbonate δ 18 O values between 1300 and 400 cal yr B.C. coincide with pollen evidence for forest loss, consistent with increased surface …
Paleolimnology of the Maya Lowlands
Since the late 1950s, scientists have used sediment cores from lakes on the Yucatan Peninsula to explore the complex interactions among climate, environment, and ancient Maya culture. Early paleolimnological studies generally assumed that late Holocene climate was invariable. Consequently, paleolimnologically inferred environmental changes that occurred during the past 3,000 years or so—for example, forest decline and soil erosion—were attributed…
Solar Forcing of Drought Frequency in the Maya Lowlands
We analyzed lake-sediment cores from the Yucatan Peninsula, Mexico, to reconstruct the climate history of the region over the past 2600 years. Time series analysis of sediment proxies, which are sensitive to the changing ratio of evaporation to precipitation (oxygen isotopes and gypsum precipitation), reveal a recurrent pattern of drought with a dominant periodicity of 208 years. This cycle is similar to the documented 206-year period in records …
A 10,300 14 C yr Record of Climate and Vegetation Change from Haiti
Pleistocene and Holocene vegetation dynamics in the American tropics are inferred largely from pollen in continental lake sediments. Maritime influences may have moderated climate and vegetation changes on Caribbean islands. Stable isotope (δ 18 O) study of a 7.6-m core from Lake Miragoane, Haiti, provided a high-resolution record of changing evaporation/precipitation (E/P) since ∼10,300 14 C yr B.P. The Miragoane pollen record documents climate …
Paleoclimate of Southwestern China for the Past 50,000 yr Inferred from Lake Sediment Records
Long sediment cores (12.5 and 13.5 m) from two lakes in Yunnan Province were used to infer the paleoclimate of southwest China over the past 50,000 yr. During the Holocene and marine isotope stage (MIS 3), bio-induced carbonate precipitation and organic matter (OM) production was high, suggesting warm temperatures and high primary productivity. In contrast, sediment inorganic carbon (IC) and organic carbon (OC) concentrations were low in last gla…
Climate change in the Lake Valencia Basin, Venezuela, ~12600 yr BP to present
We present a palaeoclimate record for northern South America, extending from the latest Pleistocene (~12600 14 C yr BP) to present. Climate reconstruction for the Valencia Basin, Venezuela, was based on sediment geochemistry and δ 18 O records from ostracod and gastropod shells in a 568 cm sediment core. Sediment chronology was established by AMS 14 C dating of terrestrial wood fragments. From ~12600 to ~10000 14 C yr BP the Valencia basin was dr…
Climate Variability on the Yucatan Peninsula (Mexico) during the Past 3500 Years, and Implications for Maya Cultural Evolution
Climate variability on the Yucatan Peninsula during the past 3500 yrs is reconstructed from the measurement of δ 18 O in monospecific ostracods and gastropods in a 6.3-m sediment core from Lake Punta Laguna, Mexico. This late Holocene record is divided into three periods based on changes in mean δ 18 O values. From ∼3310 to ∼1785 14 C yr B.P. (Period I), low mean δ 18 O values indicate relatively wet conditions (i.e., low evaporation to precipita…
A Holocene vegetation history from lowland Guatemala
A 5.45-m core from Lake Peten-Itza, lowland Guatemala, contains a near-complete record of Holo cene sedimentation. The age-depth relationship for the core is based on AMS 14 C dating of terrestrial wood fragments and provides a reliable chronology in this karst region where hard-water lake error has typically confounded sediment geochronology. In the basal part of the sequence, pollen of the Moraceae-Urticaceae group dominate, indicating the pres…
Possible role of climate in the collapse of Classic Maya civilization
Reconstruction of Caribbean climate change over the past 10,500 years
Spatial variation of strontium isotopes (87Sr/86Sr) in the Maya region
Adaptation to Variable Environments, Resilience to Climate Change
This paper explores the nature and dynamics of adaptation and resilience in the face of a diverse and varied environmentaland ecological context using the case study of South Asias Indus Civilization (ca. 30001300 BC). Most earlycomplex societies developed in regions where the climatic parameters faced by ancient subsistence farmers were variedbut rain falls primarily in one season. In contrast, the Indus Civilization developed in a specific envi…
A Holocene vegetation history from lowland Guatemala
A 5.45-m core from Lake Peten-Itza, lowland Guatemala, contains a near-complete record of Holo cene sedimentation. The age-depth relationship for the core is based on AMS 14 C dating of terrestrial wood fragments and provides a reliable chronology in this karst region where hard-water lake error has typically confounded sediment geochronology. In the basal part of the sequence, pollen of the Moraceae-Urticaceae group dominate, indicating the pres…
Paleolimnology of the Maya Lowlands
Since the late 1950s, scientists have used sediment cores from lakes on the Yucatan Peninsula to explore the complex interactions among climate, environment, and ancient Maya culture. Early paleolimnological studies generally assumed that late Holocene climate was invariable. Consequently, paleolimnologically inferred environmental changes that occurred during the past 3,000 years or so—for example, forest decline and soil erosion—were attributed…
Climate change in the Lake Valencia Basin, Venezuela, ~12600 yr BP to present
We present a palaeoclimate record for northern South America, extending from the latest Pleistocene (~12600 14 C yr BP) to present. Climate reconstruction for the Valencia Basin, Venezuela, was based on sediment geochemistry and δ 18 O records from ostracod and gastropod shells in a 568 cm sediment core. Sediment chronology was established by AMS 14 C dating of terrestrial wood fragments. From ~12600 to ~10000 14 C yr BP the Valencia basin was dr…
Reconstruction of Caribbean climate change over the past 10,500 years
Possible role of climate in the collapse of Classic Maya civilization
Climate Variability on the Yucatan Peninsula (Mexico) during the Past 3500 Years, and Implications for Maya Cultural Evolution
Climate variability on the Yucatan Peninsula during the past 3500 yrs is reconstructed from the measurement of δ 18 O in monospecific ostracods and gastropods in a 6.3-m sediment core from Lake Punta Laguna, Mexico. This late Holocene record is divided into three periods based on changes in mean δ 18 O values. From ∼3310 to ∼1785 14 C yr B.P. (Period I), low mean δ 18 O values indicate relatively wet conditions (i.e., low evaporation to precipita…
A Holocene vegetation history from lowland Guatemala
A 5.45-m core from Lake Peten-Itza, lowland Guatemala, contains a near-complete record of Holo cene sedimentation. The age-depth relationship for the core is based on AMS 14 C dating of terrestrial wood fragments and provides a reliable chronology in this karst region where hard-water lake error has typically confounded sediment geochronology. In the basal part of the sequence, pollen of the Moraceae-Urticaceae group dominate, indicating the pres…
A 10,300 14 C yr Record of Climate and Vegetation Change from Haiti
Pleistocene and Holocene vegetation dynamics in the American tropics are inferred largely from pollen in continental lake sediments. Maritime influences may have moderated climate and vegetation changes on Caribbean islands. Stable isotope (δ 18 O) study of a 7.6-m core from Lake Miragoane, Haiti, provided a high-resolution record of changing evaporation/precipitation (E/P) since ∼10,300 14 C yr B.P. The Miragoane pollen record documents climate …
Paleoclimate of Southwestern China for the Past 50,000 yr Inferred from Lake Sediment Records
Long sediment cores (12.5 and 13.5 m) from two lakes in Yunnan Province were used to infer the paleoclimate of southwest China over the past 50,000 yr. During the Holocene and marine isotope stage (MIS 3), bio-induced carbonate precipitation and organic matter (OM) production was high, suggesting warm temperatures and high primary productivity. In contrast, sediment inorganic carbon (IC) and organic carbon (OC) concentrations were low in last gla…
Climate change in the Lake Valencia Basin, Venezuela, ~12600 yr BP to present
We present a palaeoclimate record for northern South America, extending from the latest Pleistocene (~12600 14 C yr BP) to present. Climate reconstruction for the Valencia Basin, Venezuela, was based on sediment geochemistry and δ 18 O records from ostracod and gastropod shells in a 568 cm sediment core. Sediment chronology was established by AMS 14 C dating of terrestrial wood fragments. From ~12600 to ~10000 14 C yr BP the Valencia basin was dr…
Solar Forcing of Drought Frequency in the Maya Lowlands
We analyzed lake-sediment cores from the Yucatan Peninsula, Mexico, to reconstruct the climate history of the region over the past 2600 years. Time series analysis of sediment proxies, which are sensitive to the changing ratio of evaporation to precipitation (oxygen isotopes and gypsum precipitation), reveal a recurrent pattern of drought with a dominant periodicity of 208 years. This cycle is similar to the documented 206-year period in records …
A 4000-Year Lacustrine Record of Environmental Change in the Southern Maya Lowlands, Petén, Guatemala
A 4000-yr sediment core record from Lake Salpetén, Guatemala, provides evidence for Maya-induced forest clearance and consequent soil erosion between ∼1700 cal yr B.C. and 850 cal yr A.D. Radiocarbon ages of wood, seeds, and charcoal support an age-depth model with average errors of ±110 cal yr. Relatively low carbonate δ 18 O values between 1300 and 400 cal yr B.C. coincide with pollen evidence for forest loss, consistent with increased surface …
Paleolimnology of the Maya Lowlands
Since the late 1950s, scientists have used sediment cores from lakes on the Yucatan Peninsula to explore the complex interactions among climate, environment, and ancient Maya culture. Early paleolimnological studies generally assumed that late Holocene climate was invariable. Consequently, paleolimnologically inferred environmental changes that occurred during the past 3,000 years or so—for example, forest decline and soil erosion—were attributed…
Spatial variation of strontium isotopes (87Sr/86Sr) in the Maya region
Climate change on the Yucatan Peninsula during the Little Ice Age
We studied a 5.1-m sediment core from Aguada X'caamal (20° 36.6′N, 89° 42.9′W), a small sinkhole lake in northwest Yucatan, Mexico. Between 1400 and 1500 A.D., oxygen isotope ratios of ostracod and gastropod carbonate increased by an average of 2.2‰ and the benthic foraminifer Ammonia beccarii parkinsoniana appeared in the sediment profile, indicating a hydrologic change that included increased lake water salinity. Pollen from a core in nearby Ce…
Terminal Classic drought in the northern Maya lowlands inferred from multiple sediment cores in Lake Chichancanab (Mexico)
Quantification of soil erosion rates related to ancient Maya deforestation
We used seismic and sediment core data to quantify soil erosion rates for the past ~6000 yr in the closed catchment of Lake Salpetén, in the tropical lowlands of northern Guatemala. The region was affected by ancient Maya land use from before ca. 1000 B.C. to A.D. 900. This period of human impact coincided with deposition in the lake of a detrital unit (Maya Clay) as much as 7 m thick that contrasts sharply with the relatively organic-rich gyttja…
Climate drying and associated forest decline in the lowlands of northern Guatemala during the late Holocene
Palynological studies document forest disappearance during the late Holocene in the tropical Maya lowlands of northern Guatemala. The question remains as to whether this vegetation change was driven exclusively by anthropogenic deforestation, as previously suggested, or whether it was partly attributable to climate changes. We report multiple palaeoclimate and palaeoenvironment proxies (pollen, geochemical, sedimentological) from sediment cores c…
Abrupt weakening of the summer monsoon in northwest India 4100 yr ago
Climate change has been suggested as a possible cause for the decline of urban centers of the Indus Civilization ~4000 yr ago, but extant paleoclimatic evidence has been derived from locations well outside the distribution of Indus settlements. Here we report an oxygen isotope record of gastropod aragonite ( 18 O a ) from Holocene sediments of paleolake Kotla Dahar (Haryana, India), which is adjacent to Indus settlements and documents Indian summ…
The complexity of millennial-scale variability in southwestern Europe during MIS 11
Climatic variability of Marine Isotope Stage (MIS) 11 is examined using a new high-resolution direct land—sea comparison from the SW Iberian margin Site U1385. This study, based on pollen and biomarker analyses, documents regional vegetation, terrestrial climate and sea surface temperature (SST) variability. Suborbital climate variability is revealed by a series of forest decline events suggesting repeated cooling and drying episodes in SW Iberia…
AD 750–1100 Climate Change and Critical Transitions in Classic Maya Sociopolitical Networks
Multiple palaeoclimatic reconstructions point to a succession of major droughts in the Maya Lowlands between AD 750 and 1100 superimposed on a regional drying trend that itself was marked by considerable spatial and temporal variability. The longest and most severe regional droughts occurred between AD 800 and 900 and again between AD 1000 and 1100. Well-dated historical records carved on stone monuments from forty Classic Period civic-ceremonial…
Adaptation to Variable Environments, Resilience to Climate Change
This paper explores the nature and dynamics of adaptation and resilience in the face of a diverse and varied environmentaland ecological context using the case study of South Asias Indus Civilization (ca. 30001300 BC). Most earlycomplex societies developed in regions where the climatic parameters faced by ancient subsistence farmers were variedbut rain falls primarily in one season. In contrast, the Indus Civilization developed in a specific envi…
Archaeology and ancient environmental studies (16 obras) · Geography (16 obras) · Geology and Paleoclimatology Research (16 obras) · Physical geography (15 obras) · Climate change (14 obras) · Geology (13 obras) · Archaeology (11 obras) · Holocene (11 obras) · Oceanography (11 obras) · Paleoclimatology (10 obras)