Replicability of data collected for empirical estimation of relative pollen productivity

Farrell, Michelle E.; Bunting, M. Jane; Middleton, Richard S.

doi:10.1016/j.revpalbo.2016.04.009

Cited by 10 publications

(6 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Any ground flora or canopy species not hit, but occurring within 2 m of the centre of the circle, were also noted. To record the spring ephemerals and perennials present (Farrell et al, 2016), the woodlands were sampled earlier (April/May) than the open communities (July/September). Taxa recorded in the vegetation were reclassified into their palynological equivalents (see Table 2) using the scheme of Bennett (1995Bennett ( -2007, and both the original plant lists (V) and palynological equivalent vegetation lists (PEv) were used in the analyses.…”

Section: Methodsmentioning

confidence: 99%

“…Mosses are generally assumed to preserve and average several years of pollen rain (e.g. Andersen, 1970;Mulder and Janssen, 1999;Lisitsyna and Hicks 2014), although some studies indicate that they represent little more than a single growing season (Räsänen et al, 2004;Pardoe et al, 2010;Farrell et al, 2016), whereas sediment surface samples may represent ≥10 years of accumulation, although current understanding of the temporal properties of natural pollen traps is based on limited data.…”

Section: The Modern Vegetation and Pollen Datasetsmentioning

confidence: 99%

See 1 more Smart Citation

Disentangling the pollen signal from fen systems: Modern and Holocene studies from southern and eastern England

Waller

Carvalho

Grant

et al. 2017

Review of Palaeobotany and Palynology

Self Cite

View full text Add to dashboard Cite

Thick deposits of peat derived from fen environments accumulated in the coastal lowland areas adjacent to the North Sea during the middle and late Holocene. These sediments are frequently used in pollen-based reconstructions of in situ and more distant vegetation. However, discriminating between wetland and dry land originating pollen signals, and between the potential fen communities present in the wetland, is complex. In this study, a suite of analytical approaches are used to explore the pollen signal of modern fen communities and compare them against Holocene pollen assemblages. At two sites in eastern England, Woodwalton Fen and Upton Broad, vegetation composition was recorded around a series of moss polster sampling points. The communities investigated included herbaceous fen communities under different cutting regimes, a grazed area, glades, and woodland with canopies dominated by Alnus glutinosa and Betula. Cluster analysis is used to provide an overview of, and compare the structure within, the datasets consisting of the vegetation, the vegetation converted to palynological equivalents, and the pollen data. It is demonstrated that any loss of taxonomic precision in pollen identifications does not pose particular problems when attempting to identify fen communities, including tall-herbaceous vegetation, in the pollen record. Indices of Association imply pollen presence can be interpreted as indicating the local presence for some taxa, though few of these are confined to a particular community. Herbaceous fen vegetation subject to different management regimes are, however, shown to produce distinctive pollen signatures. Middle and late Holocene pollen assemblages from eastern (Fenland) and southern (Romney Marsh) England, interpreted as derived from fen vegetation, are compared against the modern pollen dataset using ordination. Most of the fossil samples plot out within or adjacent to the groupings produced by the modern samples in the ordinations. While these investigations demonstrate that modern pollen work can help improve the interpretation of Holocene assemblages they also call attention to a number of limitations including the restricted range of communities from which modern samples are currently available and the potential for non-analogous modern vegetation. The paper concludes with ideas to aid the interpretation of pollen data collected from fen peats and suggestions for future work.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: The Modern Vegetation and Pollen Datasetsmentioning

confidence: 99%

Disentangling the pollen signal from fen systems: Modern and Holocene studies from southern and eastern England

Waller

Carvalho

Grant

et al. 2017

Review of Palaeobotany and Palynology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moss polsters are widely used in terrestrial surface sampling (e.g. Moore et al, 1991;Bunting & Hjelle, 2010;Farrell et al, 2016). Different species of moss may differ in their growth form and surface texture.…”

Section: Introductionmentioning

confidence: 99%

Are modern pollen assemblages from soils and mosses the same? A comparison of natural pollen traps from subtropical China

Fang

Bunting

et al. 2022

CATENA

Self Cite

View full text Add to dashboard Cite

“…The interpretation of the fossil pollen record relies upon an understanding of how plants in modern ecosystems produce pollen (Davis 1963;Jackson & Lyford 1999;Farrell et al 2016). In temperate regions, this issue has received much attention, with modern pollen rain studies having been carried out extensively for the past century, and the Pollen Monitoring Programme (Hicks et al 2001) being established to standardise collection techniques (for a thorough review of the history of pollen trapping in Europe, see Giesecke et al (2010), and for a metaanalysis of North American assemblages see Goring et al 2013).…”

mentioning

confidence: 99%

Variability in modern pollen rain from moist and wet tropical forest plots in Ghana, West Africa

Julier

Jardine

Adu‐Bredu

et al. 2018

Grana

View full text Add to dashboard Cite

How pollen moves within and between ecosystems affects factors such as the genetic structure of populations, how resilient they are to environmental change, and the amount and nature of pollen preserved in the sedimentary record. We set artificial pollen traps in two 100 m by 100 m vegetation plots, one in a wet evergreen forest, and one in a moist semideciduous forest in Ghana, West Africa. Five traps from each plot were counted annually from 2011 to 2014, to examine spatial and temporal variation in the pollen rain of the most abundant taxa shared between pollen and vegetation assemblages. Samples from the wet evergreen plot exhibited high variability within years, with the dominant pollen types changing between samples, and many pollen taxa being over-represented relative to their parent plant abundance in some traps whilst being entirely absent from others. The most abundant plant taxa of the wet evergreen plot (Drypetes and Cynometra) do, however, constitute major components of the pollen rain. There is less variation between samples from the moist semi-deciduous plot spatially, as it is dominated by Celtis, which typically comprises >70% of the pollen assemblages. We conclude that pollen rain in these tropical ecosystems is highly heterogeneous, and suggest that pollen assemblages obtained by trapping are susceptible to small-scale variations in forest structure. Conversely, this may mean that current recommendations of more than three years of trapping in tropical systems may be too high, and that space could substitute for time in modern tropical pollen trapping.

show abstract

Replicability of data collected for empirical estimation of relative pollen productivity

Cited by 10 publications

References 61 publications

Disentangling the pollen signal from fen systems: Modern and Holocene studies from southern and eastern England

Disentangling the pollen signal from fen systems: Modern and Holocene studies from southern and eastern England

Are modern pollen assemblages from soils and mosses the same? A comparison of natural pollen traps from subtropical China

Variability in modern pollen rain from moist and wet tropical forest plots in Ghana, West Africa

Contact Info

Product

Resources

About