Antonio Alvaro Buso JR., Luiz Carlos Ruiz Pessenda, Francis Edward Mayle, Flávio Lima Lorente, Paulo Eduardo de Oliveira, Marcelo Cancela Lisboa Cohen, Marlon Carlos França, Evandro Augusto de Souza Magalhães, José Albertino Bendassolli, Fabiana Monteiro de Oliveira, Geovane Souza Siqueira
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引用次数: 0
摘要
本文研究了巴西大西洋森林生物多样性热点地区巴伊亚海岸森林生态区常绿森林及相关生态系统的全新世植被和气候历史。人工花粉陷阱提供了常绿森林的现代花粉特征,以荨麻科/Moraceae、Simarouba、Crepidospermum/Protium、Sloanea、Sapotaceae和Diploon为标志,并存在罕见的森林树木花粉类型。其伴生生态系统的花粉特征主要有柏属(Byrsonima)、Doliocarpus、Lundia和五加科(Araliaceae)。来自Lagoa Canto Grande的花粉化石表明,早至中全新世(11 154-7731 cal a bp)的植被以半落叶林为主,气候湿润和凉爽程度低于今天,同时还存在海岸沙土植被(restinga)、红树林和片状冲积林。全新世中期海平面的相对上升导致了冲积林、静止林和红树林分布的区域变化。在全新世中后期(7731-434 cal A bp),气候条件变暖、变湿润导致了森林群落的变化,并形成了现代常绿森林。
Ecological responses of the Atlantic Forest biodiversity hotspot to Holocene climate change: Insights from the Lagoa Canto Grande pollen record, Espirito Santo, coastal Brazil
This study presents the modern pollen signature and Holocene vegetation and climate history of the evergreen forest and associated ecosystems in the Bahia Coastal Forest ecoregion of Brazil's Atlantic Forest biodiversity hotspot. Artificial pollen traps provided the modern pollen signature of the evergreen forest, which is marked by Urticaceae/Moraceae, Simarouba, Crepidospermum/Protium, Sloanea, Sapotaceae and Diploon, and presence of rare forest tree pollen types. The pollen signature of the wooded mussununga, an associated ecosystem, is characterized by Byrsonima, Doliocarpus, Lundia and Araliaceae. Fossil pollen from Lagoa Canto Grande shows that the early to middle Holocene (11 154–7731 cal a
bp) vegetation was characterized by regional dominance of semi-deciduous forest, under a less humid and cooler climate than today, as well as coastal vegetation on sandy soils (restinga), mangrove and patches of alluvial forests. Relative sea-level rise during the middle Holocene caused regional changes in the distribution of alluvial forests, restingas and mangroves. A change to warmer and more humid climatic conditions during the middle to late Holocene (7731–434 cal a
bp) led to forest community changes, with the establishment of the modern evergreen forest.
期刊介绍:
The Journal of Quaternary Science publishes original papers on any field of Quaternary research, and aims to promote a wider appreciation and deeper understanding of the earth''s history during the last 2.58 million years. Papers from a wide range of disciplines appear in JQS including, for example, Archaeology, Botany, Climatology, Geochemistry, Geochronology, Geology, Geomorphology, Geophysics, Glaciology, Limnology, Oceanography, Palaeoceanography, Palaeoclimatology, Palaeoecology, Palaeontology, Soil Science and Zoology. The journal particularly welcomes papers reporting the results of interdisciplinary or multidisciplinary research which are of wide international interest to Quaternary scientists. Short communications and correspondence relating to views and information contained in JQS may also be considered for publication.