eprintid: 10114767
rev_number: 12
eprint_status: archive
userid: 608
dir: disk0/10/11/47/67
datestamp: 2020-11-11 16:10:31
lastmod: 2020-11-11 16:10:31
status_changed: 2020-11-11 16:10:31
type: report
metadata_visibility: show
creators_name: Salgado, J
creators_name: Shilland, EM
creators_name: Battarbee, RW
title: A review of liming as a technique for protecting salmonid fish populations in acidified surface waters
ispublished: pub
divisions: UCL
divisions: A01
divisions: B03
divisions: C03
divisions: F26
abstract: Liming is a common technique that has been used in many countries to raise the alkalinity
of acidified surface waters and alleviate some of the damaging effects of acidification on
salmonid fish populations.
The most common liming substance used is calcite, a calcium carbonate compound that is
relatively inexpensive, available in different particle sizes and dissolves relatively quickly.
It can be applied directly to streams or lakes or it can be applied to catchment soils. When
applied to catchment soils its effect can be long-lasting but it can cause significant
damage to those catchment plant and animal communities that are naturally adapted to
acidic conditions. When applied directly to surface waters its effect can be immediate but
applications need to be continuous or frequently repeated to counter downstream dilution
and loss.
For streams the most effective method is to use an automatic doser controlled by pHmeasuring sensors upstream and downstream of the doser to enable the exact quantity of
lime needed to be added to the water body. Although effective this is an expensive
method and one that needs to be maintained continuously for several years until the
critical load exceedance has been eliminated. An alternative or complementary method is
partial catchment liming by targeting water sources and selected wetlands to minimise
damage to catchment vegetation.
Liming can be very effective in restoring and protecting salmonid fish populations, but if
over-applied it can lead to unwanted increases in alkalinity and productivity that may
produce symptoms of eutrophication and unwanted changes in the composition of plant
and algal communities downstream.
date: 2013
date_type: published
publisher: UCL Environmental Change Research Centre
official_url: https://www.geog.ucl.ac.uk/research/research-centres/environmental-change-research-centre
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1001663
lyricists_name: Shilland, Ewan
lyricists_id: EMSHI25
actors_name: Kalinowski, Damian
actors_id: DKALI47
actors_role: owner
full_text_status: public
series: ECRC Research Report
number: 156
place_of_pub: London, UK
pages: 26
issn: 1366-7300
book_title: ECRC Research Report
citation:        Salgado, J;  Shilland, EM;  Battarbee, RW;         (2013)    A review of liming as a technique for protecting salmonid fish populations in acidified surface waters.                    (ECRC Research Report  156  ). UCL Environmental Change Research Centre: London, UK.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10114767/1/ecrc_report_156_Salgado.pdf