DOI: 10.1016/j.palaeo.2014.12.010
论文题名: Holocene benthic foraminiferal assemblages indicate long-term marginality of reef habitats from Moreton Bay, Australia
作者: Narayan Y.R. ; Lybolt M. ; Zhao J.-X. ; Feng Y. ; Pandolfi J.M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 420 起始页码: 49
结束页码: 64
语种: 英语
英文关键词: Benthic foraminifera
; Bio-indicators
; Coral reefs
; Holocene
; Moreton Bay
; Natural variability
; Palaeoecology
英文摘要: Since European settlement (ca. 1824. CE), the subtropical inshore reefs of Moreton Bay have undergone rapid deterioration in water quality from changes in land-use practices, resource exploitation and rapid population growth, spurring marine managers to assess the drivers of ecological shifts. However, the short temporal-scale of most studies is an inadequate baseline for understanding the severity and magnitude of biological response. We present millennial-scale records employing palaeoecological and quantitative multivariate techniques within a concise chronological framework to analyse benthic foraminiferal community structure of reefs in Moreton Bay, Queensland. Well-constrained, U/Th-dated, millennial-scale records from sediment cores were used to document the long-term response of foraminifers to natural environmental variability. The temporal and spatial distribution patterns of foraminifers reveal long-term marginality throughout the ~. 7400. years of Holocene history, prior to European settlement. While specific faunal response to the effects of relative ENSO-climate and sea level fall are difficult to disentangle, the earlier phases of reef development are already represented by marginal taxa indicating possibly an earlier response to a decline in conditions. Overall, long-term consistency in conditions favoured two types of low diversity reef assemblages: 1) high density of small, heterotrophic and opportunistic species and 2) low density of photosymbiotic foraminiferal assemblages. Comparison of foraminiferal community composition between the Holocene and the present day indicates overlap in species composition supporting long-term marginality, particularly in the Western Bay. Such combined palaeoecological and recent studies can benefit long-term initiatives for monitoring present and future water quality conditions in the Bay's reef habitats. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69041
Appears in Collections: 过去全球变化的重建
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作者单位: Leibniz Center for Tropical Marine Ecology (ZMT), Bremen, Germany; Australian Research Council Centre of Excellence for Coral Reef Studies, Centre for Marine Science, School of Biological Sciences, The University of Queensland, Brisbane, QLD, Australia; School of Earth Sciences, The University of Queensland, Brisbane, QLD, Australia
Recommended Citation:
Narayan Y.R.,Lybolt M.,Zhao J.-X.,et al. Holocene benthic foraminiferal assemblages indicate long-term marginality of reef habitats from Moreton Bay, Australia[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,420