气候变化领域集成服务门户(CCPortal): Late Holocene environmental change and the anthropization of the highlands of Santo Antão Island; Cabo Verde

CCPortal

DOI	10.1016/j.palaeo.2019.03.033
	Late Holocene environmental change and the anthropization of the highlands of Santo Antão Island; Cabo Verde
	Castilla-Beltrán A.; de Nascimento L.; Fernández-Palacios J.M.; Fonville T.; Whittaker R.J.; Edwards M.; Nogué S.
发表日期	2019
ISSN	0031-0182
起始页码	101
结束页码	117
卷号	524
英文摘要	Cabo Verde was the first tropical archipelago colonized by Europeans. Historians have suggested that the first colonizers initiated archipelago-wide ecosystem degradation, loss of vegetation cover, and erosion. However, the human–environment interactions that led to the archipelago's current environmental status remain poorly understood. Here, we report the first palaeoecological study of past vegetation change and disturbance regimes for Cabo Verde. We present a 2130-yr old sediment sequence from a volcanic caldera (Cova de Paúl) located at ~1200 m asl on Santo Antão Island, for which we analyzed fossil pollen, non-pollen palynomorphs (NPPs), charcoal, silica bodies, and grain size distribution. Our analyses do not show evidence of the presence of temperate, tropical or subtropical forests growing on the summits of Santo Antão in pre-human times. The pollen record shows that scrubland and grasslands dominated the highlands and underwent compositional changes ca. 1850 and 1300 cal yr BP. These shifts overlap with erosion phases and are linked to intensified seasonality. Steady rates of sedimentation marked the period 1230 to ca. 350 cal yr BP, but an increase in charcoal concentrations indicate a drying phase. Increases in regional and local fire, peaks of coprophilous fungi and the presence of New World crop pollen (Zea mays) are interpreted as the onset of Portuguese settlement of the highlands after 450 BP. Sustained erosion between ca. 350 and 100 cal yr BP indicate soil degradation, and the pollen record shows the increase in introduced herbaceous taxa (Rosaceae, Centaurea, Verbenaceae) and exotic tree taxa (e.g. Pinus), while shifting abundances of coprophilous fungi indicate changes in land-use. The record shows stabilization of soils in the last century due to recent afforestation of the highlands. Further palaeoecological studies have the potential to provide further detail of the long-term dynamics of Cabo Verde ecosystems and to inform conservation initiatives. © 2019 Elsevier B.V.
英文关键词	Ecological disturbances; Human impacts; Islands; Landscape change; Macaronesia; Palaeoecology
语种	英语
scopus关键词	anthropogenic effect; archipelago; caldera; ecological approach; environmental change; environmental degradation; environmental disturbance; fossil record; grassland; herb; Holocene; landscape change; nature-society relations; paleoecology; paleoenvironment; palynology; scrub; seasonality; tropical environment; upland region; vegetation history; Cape Verde [Macaronesia]; Macaronesia; Santo Antao; Centaurea; Fungi; Rosaceae; Verbenaceae; Zea mays
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150976
作者单位	School of Geography and Environmental science, University of Southampton, Highfield, Southampton, SO17 1BJ, United Kingdom; Island Ecology and Biogeography Group, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias (IUETSPC), Universidad de La Laguna (ULL), La Laguna, Canary Islands 38200, Spain; School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, United Kingdom; Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, Copenhagen, 2100, Denmark
推荐引用方式 GB/T 7714	Castilla-Beltrán A.,de Nascimento L.,Fernández-Palacios J.M.,et al. Late Holocene environmental change and the anthropization of the highlands of Santo Antão Island; Cabo Verde[J],2019,524.
APA	Castilla-Beltrán A..,de Nascimento L..,Fernández-Palacios J.M..,Fonville T..,Whittaker R.J..,...&Nogué S..(2019).Late Holocene environmental change and the anthropization of the highlands of Santo Antão Island; Cabo Verde.Palaeogeography, Palaeoclimatology, Palaeoecology,524.
MLA	Castilla-Beltrán A.,et al."Late Holocene environmental change and the anthropization of the highlands of Santo Antão Island; Cabo Verde".Palaeogeography, Palaeoclimatology, Palaeoecology 524(2019).