Reconstruction of paleovegetation and paleoclimate in the Early and Middle Eocene, Hainan Island, China

Yao, Yi‐Feng; Bera, Subir; Ferguson, David K.; Mosbrugger, Volker; Paudayal, Khum N.; Jin, Jianhua; Li, Cheng‐Sen

doi:10.1007/s10584-008-9457-2

Cited by 68 publications

(44 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the sporopollen is transported longer distances, it is difficult to accurately reconstruct paleoclimate solely from this source. From the current climate of the living A. hainanensis, we infer that the Eocene paleoclimate of Changchang Basin, Hainan Island was warmer and more humid than the results reported by Yao et al [21] .…”

Section: Discussioncontrasting

confidence: 53%

“…Yao et al [21] studied the Eocene palynoflora of Changchang Basin, Hainan Island, and quantitatively reconstructed its paleoclimate using the coexistence approach. Their results show that the MAT was 14.2-19.8 ℃, the MART was 12.1-24.6℃, and the MAP was 784.7-1113.3 mm, and the MAT and MAP are lower than the current distribution areas of living A. hainanensis.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

Qiu

Liao

et al. 2009

Sci. China Ser. D-Earth Sci.

View full text Add to dashboard Cite

Alseodaphne changchangensis sp. nov. (Lauraceae), with a perfectly preserved fossil leaf, was found in the Eocene Changchang Formation from the Changchang Basin of Hainan Island, China. This represents the earliest occurrence at the lowest latitude for the genus Alseodaphne, and offers important fossil evidence for further investigation of the origin and evolution of this genus and the paleoclimate of Hainan Island in the Eocene. Based on leaf morphology and cuticle characteristics, our fossil specimen is closest to the living species A. hainanensis Merrill, which is distributed mainly in tropical lowland rain forests, tropical montane rain forests, and subtropical montane evergreen broad-leafed forests on Hainan Island, and also found on the Wanshan Islands of Zhuhai of Guangdong Province and in northern parts of Vietnam. In the above areas, the climate factors are similar, i.e., the mean annual temperature is 20-22.6℃, the mean annual range of temperature 12-12.6℃ and the mean annual precipitation 1784-2500 mm. Based on the nearest living species analysis, we conclude that the climate of the Changchang Basin on Hainan Island during the Eocene was close to that of the distribution areas of the living A. hainanensis.

show abstract

Section: Discussioncontrasting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

Qiu

Liao

et al. 2009

Sci. China Ser. D-Earth Sci.

View full text Add to dashboard Cite

show abstract

“…Previous studies claim that the island began to separate from the mainland along a fault-line that developed in the Qiongzhou Strait during the Quaternary (Wang et al, 1995a;Xing et al, 1995;Zhao et al, 2007;Yao et al, 2009). However, results of tectonophysical and marine sediment studies suggest that Hainan began to split from the mainland much earlier, during the Tertiary.…”

Section: Hainan: Physical and Ecological Featuresmentioning

confidence: 97%

Seed Plant Endemism on Hainan Island: A Framework for Conservation Actions

Francisco‐Ortega

Wang

et al. 2010

Bot. Rev.

View full text Add to dashboard Cite

Hainan, the second largest island of China, has the most extensive and best preserved tropical forests of this country. A network of 68 protected areas (54 of them are terrestrial) provides in situ conservation for the unique ecosystems of the island. We: (1) discuss an updated check-list of seed-plant species that are endemic to Hainan, (2) evaluate the extent to which the endemic flora has been the subject of molecular studies, and (3) investigate the conservation status of these species. We recognize 397 endemic species on the island, 271 of which are reported in the protected areas, and 144 of which have been Red-Listed (85 assigned to the Critically Endangered (40) or Endangered (45) IUCN categories). The families with the highest number of endemics are Rubiaceae (33 species), Lauraceae (27 species), and Poaceae (26 species). The island has only seven endemic genera, all of which are unispecific. Compared with other tropical islands, Hainan has a low number of endemics but our preliminary observations suggest that the island has a highly disharmonic flora when compared with that from the mainland. Nevertheless, most of the major clades of the seed-plant tree of life with representatives in China also have endemic species on the island. We argue that the low levels of endemism reflect the continental nature of Hainan and the fact that several areas of the island have not been fully inventoried. We were unable to find a single molecular systematic study focusing exclusively on the Hainan endemics; however, 24 of the endemic species have been included in phylogenetic studies targeting particular genera or families. Future research/conservation actions for the endemic flora of Hainan should focus in developing: (1) a red-list that assesses all 397 endemic species, (2) comprehensive floristic studies for the protected areas, (3) molecular phylogenetic and conservation genetic studies with a primary focus on the endemics, (4) studies to understand what ecological interactions are important in the biology of the endemic species, and (5) eco-geographical studies to identify Important Biodiversity Zones of endemism within Hainan and therefore potential new protected areas.

show abstract

“…The coexistence interval is considered as the best estimate of the climatic conditions under which the past flora lived. The detailed procedure for obtaining the climatic tolerance of a NLR follows Yao et al (2009). In this study, seven climatic parameters have been estimated for climate analysis, i.e.…”

Section: Climate Analysismentioning

confidence: 99%

Holocene vegetation and climate history at Haligu on the Jade Dragon Snow Mountain, Yunnan, SW China

et al. 2011

Self Cite

View full text Add to dashboard Cite

This paper uses pollen analysis to investigate and document the changing climate and vegetation during the Holocene based on a 400 cm core in depth obtained at a wetland site at Haligu (3,277 m a. s. l.) on the Jade Dragon Snow Mountain in Yunnan, China. By applying the Coexistence Approach to pollen data from this core, a quantitative reconstruction of climate over the last 9,300 years was made based on each pollen zone and individual core sample, which reveals the temperature and precipitation change frequently during that time. The qualitative analyses show that from 9300 to 8700 cal. yr BP, the vegetation was dominated by needle-leaved forest (mainly Pinus and Abies), indicating a slightly cool and moderately humid climate. Between 8700 and 7000 cal. yr BP, evergreen broad-leaved forest, dominated by Quercus, became the predominant vegetation type, replacing needleleaved forest at this elevation, implying a warmer and more humid climate. During the period 7000 to 4000 cal. yr BP, the vegetation changed to mixed needle-leaved and evergreen broad-leaved forest, indicating a warm and moderately humid climate, but somewhat cooler than the preceding stage. From 4000 to 2400 cal. yr BP, the vegetation was again dominated by evergreen broad-leaved forest, but coniferous trees (mainly Pinus)

show abstract

Reconstruction of paleovegetation and paleoclimate in the Early and Middle Eocene, Hainan Island, China

Abstract: The Early-Middle Eocene palynoflora and paleoclimate of Changchang Basin, Hainan Island, South China, is described in the present paper and is compared with that of the Middle-Late Eocene,

Cited by 68 publications

References 11 publications

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

Eocene fossil Alseodaphne from Hainan Island of China and its paleoclimatic implications

Seed Plant Endemism on Hainan Island: A Framework for Conservation Actions

Holocene vegetation and climate history at Haligu on the Jade Dragon Snow Mountain, Yunnan, SW China

Contact Info

Product

Resources

About