The University of Southampton
University of Southampton Institutional Repository

Monitoring the fluvial palynomorph load in a lowland temperate catchment and its relationship to suspended sediment and discharge

Monitoring the fluvial palynomorph load in a lowland temperate catchment and its relationship to suspended sediment and discharge
Monitoring the fluvial palynomorph load in a lowland temperate catchment and its relationship to suspended sediment and discharge
Despite it being a component of the seston we know very little about fluvial (waterborne) pollen and spore (palynomorph) transport. This paper presents the results of a monitoring programme conducted over two years and at a catchment scale in South West England. A hierarchical monitoring network was established with flood peak samples taken at 9 sub-catchments, intra-hydrograph samples taken in two sub-catchments and time-integrated sampling undertaken at one location. In addition sampling was undertaken of probable palynomorph sources such as channel bed and bank sediments, and the airborne pollen flux was monitored using modified Tauber traps. The results support previous research in illustrating how the vast majority of fluvial pollen and spores are transported during floods (91%) and that the main control on waterborne palynomorph assemblages is the catchment vegetation and its spatial distribution but with a long-distance (extra-catchment) component. However, strong seasonal effects are also shown, and the importance of distinctive sources such as the riparian input, bed re-suspension and overland flow into drains and tributaries is revealed. Fine sediment in river pools appears to act as a selective store of damaged cereal type pollen grains derived from arable fields. Although pollen does form part of composite particles the data presented here suggest that the majority of the pollen is transported as single grains. Fluvial palynomorph loading is strongly dependant upon discharge and so concentrations in laminated or varved sediments could be regarded as a proxy for flood magnitude.
seston, fine particulate organic matter, waterborne pollen, suspended sediment, organic transport
0018-8158
27-40
Brown, A.G.
c51f9d3e-02b0-47da-a483-41c354e78fab
Carpenter, R.G.
a4c2a35d-48f3-459f-98e3-d4f4e5cdf836
Walling, D.E.
2807f50d-f0c6-42f4-999f-01031c6bd420
Brown, A.G.
c51f9d3e-02b0-47da-a483-41c354e78fab
Carpenter, R.G.
a4c2a35d-48f3-459f-98e3-d4f4e5cdf836
Walling, D.E.
2807f50d-f0c6-42f4-999f-01031c6bd420

Brown, A.G., Carpenter, R.G. and Walling, D.E. (2008) Monitoring the fluvial palynomorph load in a lowland temperate catchment and its relationship to suspended sediment and discharge Hydrobiologia, 607, (1), pp. 27-40.

Record type: Article

Abstract

Despite it being a component of the seston we know very little about fluvial (waterborne) pollen and spore (palynomorph) transport. This paper presents the results of a monitoring programme conducted over two years and at a catchment scale in South West England. A hierarchical monitoring network was established with flood peak samples taken at 9 sub-catchments, intra-hydrograph samples taken in two sub-catchments and time-integrated sampling undertaken at one location. In addition sampling was undertaken of probable palynomorph sources such as channel bed and bank sediments, and the airborne pollen flux was monitored using modified Tauber traps. The results support previous research in illustrating how the vast majority of fluvial pollen and spores are transported during floods (91%) and that the main control on waterborne palynomorph assemblages is the catchment vegetation and its spatial distribution but with a long-distance (extra-catchment) component. However, strong seasonal effects are also shown, and the importance of distinctive sources such as the riparian input, bed re-suspension and overland flow into drains and tributaries is revealed. Fine sediment in river pools appears to act as a selective store of damaged cereal type pollen grains derived from arable fields. Although pollen does form part of composite particles the data presented here suggest that the majority of the pollen is transported as single grains. Fluvial palynomorph loading is strongly dependant upon discharge and so concentrations in laminated or varved sediments could be regarded as a proxy for flood magnitude.

PDF Brown_et_al_2008.pdf - Accepted Manuscript
Download (841kB)

More information

e-pub ahead of print date: 29 March 2008
Published date: July 2008
Keywords: seston, fine particulate organic matter, waterborne pollen, suspended sediment, organic transport

Identifiers

Local EPrints ID: 63710
URI: http://eprints.soton.ac.uk/id/eprint/63710
ISSN: 0018-8158
PURE UUID: d0b16966-2061-4dad-90eb-a394f62907c8

Catalogue record

Date deposited: 24 Oct 2008
Last modified: 19 Oct 2017 09:30

Export record

Contributors

Author: A.G. Brown
Author: R.G. Carpenter
Author: D.E. Walling

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×