Coverart for item
The Resource Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico, by Richard Hall Benson, (microform)

Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico, by Richard Hall Benson, (microform)

Label
Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico
Title
Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico
Statement of responsibility
by Richard Hall Benson
Creator
Subject
Language
eng
Summary
Forty-eight Recent ostracod species of 30 genera belonging to 6 principal biofacies were collected from an estuary, a salt-water lagoon, and a large open bay on the west coast of Baja California, 60 miles south of San Diego. These include a brackish-water biofacies, a salt-water lagoon and salt-marsh biofacies, and an open-bay megabiofacies with four biofacies and a subfacies which are dependent on depth, vegetation, and substratum. Three hundred and sixteen samples of the top 1 cm. of sediment from 170 stations were examined for living and dead ostracods. Depth ranges from supratidal to 215 fathoms in Todos Santos Bay, salinity from 0.5 0/00 in the Rio San Miguel estuary to 37 0/00 in the salt-water lagoon of the Estero de Punta Banda, and temperature from 50° F. in the deeper parts of the bay to 85° F. in the estero. The substratum consisted of rock, cobbles, coarse to fine sand to poorly sorted very fine silt and clay with the finer sediments predominant. The vegetation consisted primarily of eel grass, coralline algae, Laminaria, and Macrocystis. Twenty-four ostracod species of 16 genera show sufficient ecologic restriction and stratigraphic range to be used as biofacies indicators in ancient sediments, with some ranging back to the Pliocene. Salinity and depth of water are the two factors that seem most to affect the distribution of the ostracod species in the areas studied. The distribution of structural types of plants greatly influences the distribution of phytal ostracods. Many forms reflect in their carapace morphology their like mode as phytal, endopsammon, epipsammon, epipelos, or endopelos. The distribution of certain sediment types of the substratum could be correlated with the abundance as well as the character of some biofacies
Cataloging source
AZU
http://library.link/vocab/creatorDate
1929-
http://library.link/vocab/creatorName
Benson, Richard H.
Degree
Ph. D.
Granting institution
University of Illinois.
Illustrations
  • illustrations
  • maps
Index
no index present
Literary form
non fiction
Nature of contents
  • bibliography
  • theses
http://library.link/vocab/subjectName
  • Ostracoda, Fossil
  • Paleontology
  • Geology, Stratigraphic
  • Aquatic ecology
  • Ostracoda, Fossil
Label
Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico, by Richard Hall Benson, (microform)
Instantiates
Publication
Note
Vita
Bibliography note
Includes bibliographical references (leaves 110-123)
Carrier category
microfilm reel
Carrier category code
hd
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Control code
47852889
Dimensions
35mm.
Extent
vii, 220 leaves
Form of item
microfilm
Media category
microform
Media MARC source
rdamedia
Media type code
h
Other physical details
illustrations, maps
Positive negative aspect
positive
http://bibfra.me/vocab/marc/reductionRatio
--
ReductionRatioRange
low reduction ratio
Reproduction note
Microfilm.
Specific material designation
microfilm reel
System control number
(OCoLC)6963053
Label
Ecology of recent ostracods of the Todos Santos Bay region, Baja California, Mexico, by Richard Hall Benson, (microform)
Publication
Note
Vita
Bibliography note
Includes bibliographical references (leaves 110-123)
Carrier category
microfilm reel
Carrier category code
hd
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Control code
47852889
Dimensions
35mm.
Extent
vii, 220 leaves
Form of item
microfilm
Media category
microform
Media MARC source
rdamedia
Media type code
h
Other physical details
illustrations, maps
Positive negative aspect
positive
http://bibfra.me/vocab/marc/reductionRatio
--
ReductionRatioRange
low reduction ratio
Reproduction note
Microfilm.
Specific material designation
microfilm reel
System control number
(OCoLC)6963053

Library Locations

    • Ellis LibraryBorrow it
      1020 Lowry Street, Columbia, MO, 65201, US
      38.944491 -92.326012
Processing Feedback ...