Identification

Title

Influence of riparian shade on stream thermal regime (New Forest 2010)

Alternative title(s)

Abstract

River temperature is a key parameter of water quality. Most bio-chemical processes and physical characteristics of a water body are functions of temperature. Aquatic organisms including fish are polikothermic and respond to the entire temperature regime; the absolute value, seasonal and diel ranges, rate of change and the timing and duration of extreme thermal events. Salmonids are cold water species with high metabolic rates and oxygen demand, they thrive in temperatures below 20oC and have an upper thermal limit of 24 - 28oC. In recent summers water temperatures in excess of 25oC have been recorded in streams across the New Forest. High water temperature is associated with low flow, reduced oxygen level and increased ammonia concentration. Fish are able to move to cooler water but the stress caused by crowding and potential exposure to diseases can led to fish deaths. The shade cast by riparian vegetation has a significant influence on river habitat quality and with climate change predicted to lead to warmer, drier summers the role of riparian shade may become important across England and Wales to protect vulnerable species from the threat of high water temperatures. Objectives (1) to monitor stream water temperature in shaded and unshaded sections of three streams in the New Forest and (2) investigate the relationship between water temperature and riparian shade levels. Additional resource: Broadmeadow, S., Jones. J.G., Langford, T.E.L., Shaw, P.J. and Nisbet, T., (2010). The influence of riparian shade on lowland stream water temperatures in Southern England and their viability for Brown Trout. River Research and Applications DOI: 10.1002/rra.1354 Jan (2010). Attribution statement:

Resource type

dataset

Resource locator

http://data.defra.gov.uk/Forestry/FC_OpenData/FR/Influence+of+riparian+shade+on+stream+thermal+regime+(New+Forest+2010)+.zip

protocol: WWW:LINK-1.0-http--link

name:

description: Data download

Unique resource identifier

code

57ebd6a8-08d0-46c6-9253-547c27854df6

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

http://www.opengis.net/def/crs/EPSG/0/27700

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

OpenData

Keyword set

keyword value

England

Keyword set

keyword value

Science

Research

Riparian shade

Water temperature

Keyword set

keyword value

stream measurement

riparian zone

fish

originating controlled vocabulary

title

reference date

date type

publication

effective date

2010-01-13

Geographic location

West bounding longitude

-1.725

East bounding longitude

-1.59

North bounding latitude

50.906

South bounding latitude

50.824

Extent

Extent group

authority code

code identifying the extent

http://data.ordnancesurvey.co.uk/doc/country/england

Temporal reference

Temporal extent

Begin position

2005-01-13

End position

2010-11-24

Dataset reference date

date type

creation

effective date

2010-11-24

date type

publication

effective date

2016-06-08

Frequency of update

notPlanned

Quality and validity

Lineage

Water temperature was recorded in 2 streams under 2 levels of canopy shade (shaded and open). The loggers were located at paired sites the initial upstream site was open followed downstream by a shaded section. The loggers were located at the end of stream sections that have at least 100 m of uniform shade/open canopy. To capture more spatial variability additional loggers were placed in Ober water at various locations of interest such as the confluence with small tributaries and at the confluence of the Highland water.

Conformity

Data format

name of format

Open format | Comma Separated Values file (CSV)

version of format

NA

Constraints related to access and use

Constraint set

Use constraints

Contains Forestry Commission information licensed under the Open Government Licence v3.0.

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Responsible organisations

Responsible party

organisation name

Forestry Commission

email address

mapping.geodata@forestry.gov.uk

web address

http://www.forestry.gov.uk/

description: Forestry Commission Website

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

Forestry Commission

email address

mapping.geodata@forestry.gov.uk

responsible party role

pointOfContact

Metadata date

2020-03-19

Metadata language