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University of the Pacific

The status of beavers in the delta area of the San Joaquin River, San Joaquin County, California, 1950-1951

Abstract

dc:description.abstract

<p>The term “delta area” refers to a region roughly 40 miles long and 15 miles wide situated 65 miles east of San Francisco Bay where the San Joaquin and Sacramento Rivers join and enter Suisun Bay. The waterways in this area are fresh water from these rivers, but they are affected by the ocean tides and to some extent by the salinity of the ocean water. The rgeion ecompasses about 507,000 acres, most of which has been reclaimed for agricultural purposes by the construction of levees to contain the tides and high waters. The word “islands” is used locally to designate this area.</p><p>The part played by beavers in the exploration and colonization of this nation was a very important one. The fur trappers in their quest for new areas in which to trap, vigorously explored unknown regions. Knowledge concerning the geography of the new land was passed on the colonists who were eagerly seeking new and suitable sites for home and farms. Thus did the beaver and other fur-bearing animals indirectly speed the development of the nation.</p>

Degree

thesis:*
Name thesis:degree_name
Master of Arts (M.A.)
Level thesis:degree_level
Thesis
Discipline thesis:degree_discipline
Zoology
Year dc:date.available
1951

Author and committee

dc:creator, dc:contributor.*
Author dc:creator
  • Cram, Delbert David
Contributors dc:contributor
  • John R. Arnold

Subjects

dc:subject × 3

Rights

dc:rights

Identifiers

dc:identifier.*
Repository record dc:identifier
https://scholarlycommons.pacific.edu/uop_etds/1151
OAI identifier oai:identifier
oai:scholarlycommons.pacific.edu:uop_etds-2150

Chain of custody

source
Harvested from
University of the Pacific
Base URL
scholarlycommons.pacific.edu/do/oai/
Last updated
2026-07-24
Source record
OAI-PMH GetRecord
citation

Cram, Delbert David. The status of beavers in the delta area of the San Joaquin River, San Joaquin County, California, 1950-1951. Thesis thesis, 1951. https://scholarlycommons.pacific.edu/uop_etds/1151