Lake responses to historical land use changes in northern Spain:: The contribution of non-pollen palynomorphs in a multiproxy study

被引:56
作者
Riera, S.
Lopez-Saez, J. A.
Julia, R.
机构
[1] Univ Barcelona, Deminar Prehist Study & Res, Dept Prehist & Archaeol, E-08028 Barcelona, Spain
[2] CSIC, Inst Earth Sci, E-08028 Barcelona, Spain
[3] CSIC, Hist Inst, Dept Prehist, Lab Archaeobot, E-28014 Madrid, Spain
关键词
non-pollen palynomorphs; environmental history; Late Holocene; palaeolimnology; hemp retting;
D O I
10.1016/j.revpalbo.2006.03.014
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Environmental changes discussed in an earlier work using pollen, sedimentology, ostracods and charcoal proxies were evaluated with new non-pollen palynomorph data. The limits of non-pollen palynomorph biozones are consistent with the main environmental changes reported earlier in the Pre-Pyrenean Lake Estanya. The non-pollen palynomorph diagram from Lake Estanya Gran shows that changes in human activity during the last 2000 years are reflected in lake responses. Palaeoecological data from non-pollen palynomorphs have helped to determine the causes of these environmental changes, e.g. the lake use for hemp water-retting and its limnological impacts. The main change in the non-pollen palynomorph diagram is the expansion of Desmidiaceae, indicating more acid water conditions between 1220 AD and 1760 AD. The onset of Desmidiaceae in 1220 AD may be attributed to the development of farming and probably to the construction of water channels. Desmidiaceae undergo a considerable decline after 1760 AD, coinciding with the fall in hemp production in the XVIIIth century. Consequently, the lake water recovered the oligotrophic, status that had prevailed before 1220 AD. The perturbation caused by the introduction of hemp retting practices in Lake Estanya led to changes in all the proxies such as sedimentology, non-pollen palynomorphs, pollen and faunal communities. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:127 / 137
页数:11
相关论文
共 42 条
[11]  
DRICOT E, 1989, GEOBOUND BRUXELLES, V2, P114
[12]  
Fleming M. P., 1998, Journal of the International Hemp Association, V5, P80
[13]  
GODWIN H, 1967, Review of Palaeobotany and Palynology, V4, P71, DOI 10.1016/0034-6667(67)90173-X
[14]   CONISS - A FORTRAN-77 PROGRAM FOR STRATIGRAPHICALLY CONSTRAINED CLUSTER-ANALYSIS BY THE METHOD OF INCREMENTAL SUM OF SQUARES [J].
GRIMM, EC .
COMPUTERS & GEOSCIENCES, 1987, 13 (01) :13-35
[15]   Neorhabdocoela oocytes - Palaeoecological indicators found in pollen preparations from Holocene freshwater lake sediments [J].
Haas, JN .
REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 1996, 91 (1-4) :371-382
[16]   Literature on archaeological remains of cultivated plants (1999/2000) [J].
Kroll, H .
VEGETATION HISTORY AND ARCHAEOBOTANY, 2001, 10 (01) :33-60
[17]  
LAITINEN E, J INT HEMP ASS, P96
[18]  
Latalowa Malgorzata, 1992, Acta Palaeobotanica, V32, P123
[19]  
Lopez-Saez Jose Antonio, 1998, Revue de Paleobiologie, V17, P445
[20]   The palaeolimnology of Soppensee (Central Switzerland), as evidenced by diatom, pollen, and fossil-pigment analyses [J].
Lotter, AF .
JOURNAL OF PALEOLIMNOLOGY, 2001, 25 (01) :65-79