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Fauna of four streams in the Black Mountain District of South Wales

Journal Article:

Abstract

This paper is a general study of four torrential streams in the 'Black Mountain' district of South Wales. Fauna collections were made at seven collecting stations, between altitudes of 1550 and 400 ft. Observations were made on the chemical nature of the water, current speed and temperature. The fauna taken as a whole is rich, including about 151 species. Of the four streams, the one flowing north has the richest fauna, which includes about 130 species in which all the usual aquatic animal groups except the hirudinea are represented. This may be attributed to its equable temperature, abundant and uniform flow, variable gradient, adequate macroflora, and alkaline-neutral moderately calcareous water. The streams flowing south all have very soft, acid water; their stream-beds are more uniform in gradient, they are extremely variable in flow, have a more scanty macroflora, and on sunny summer days the water temperature is high, little below the shade temperature. All have a much poorer fauna than the north-flowing stream. One has a pH of 6.0-6.8, the fauna includes about 65 species, the usual insect groups are well represented but only 9 species other than insects occur. The second has a pH of 6.0 at low level  More>>
Authors:
Publication Date:
Jan 01, 1948
Product Type:
Journal Article
Reference Number:
EDB-84-006300
Resource Relation:
Journal Name: J. Anim. Ecol.; (United Kingdom); Journal Volume: 17
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 54 ENVIRONMENTAL SCIENCES; ACIDIFICATION; BIOLOGICAL EFFECTS; STREAMS; AQUATIC ORGANISMS; ALTITUDE; BEETLES; FLOW RATE; INSECTS; PH VALUE; SAMPLING; TEMPERATURE DEPENDENCE; ANIMALS; ARTHROPODS; COLEOPTERA; INVERTEBRATES; SURFACE WATERS; 560302* - Chemicals Metabolism & Toxicology- Microorganisms- (-1987); 560304 - Chemicals Metabolism & Toxicology- Invertebrates- (-1987); 520200 - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
5603635
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JAECA
Submitting Site:
HEDB
Size:
Pages: 51-65
Announcement Date:

Journal Article:

Citation Formats

Jones, J R.E. Fauna of four streams in the Black Mountain District of South Wales. United Kingdom: N. p., 1948. Web.
Jones, J R.E. Fauna of four streams in the Black Mountain District of South Wales. United Kingdom.
Jones, J R.E. 1948. "Fauna of four streams in the Black Mountain District of South Wales." United Kingdom.
@misc{etde_5603635,
title = {Fauna of four streams in the Black Mountain District of South Wales}
author = {Jones, J R.E.}
abstractNote = {This paper is a general study of four torrential streams in the 'Black Mountain' district of South Wales. Fauna collections were made at seven collecting stations, between altitudes of 1550 and 400 ft. Observations were made on the chemical nature of the water, current speed and temperature. The fauna taken as a whole is rich, including about 151 species. Of the four streams, the one flowing north has the richest fauna, which includes about 130 species in which all the usual aquatic animal groups except the hirudinea are represented. This may be attributed to its equable temperature, abundant and uniform flow, variable gradient, adequate macroflora, and alkaline-neutral moderately calcareous water. The streams flowing south all have very soft, acid water; their stream-beds are more uniform in gradient, they are extremely variable in flow, have a more scanty macroflora, and on sunny summer days the water temperature is high, little below the shade temperature. All have a much poorer fauna than the north-flowing stream. One has a pH of 6.0-6.8, the fauna includes about 65 species, the usual insect groups are well represented but only 9 species other than insects occur. The second has a pH of 6.0 at low level to 4.4 in full flood; here 57 species were found, again mainly insects, and the ephemorophtera are very poorly represented. The third southern stream is generally even more acid, pH 5.8-4.2. Its fauna includes 55 species of which 24 are beetles, plecoptera are very poorly represented and ephemeroptera absent.}
journal = {J. Anim. Ecol.; (United Kingdom)}
volume = {17}
journal type = {AC}
place = {United Kingdom}
year = {1948}
month = {Jan}
}