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Main Title Microscopic Flora and Fauna of Tree Holes.
Author Lacker, James B. ;
CORP Author Public Health Service, Cincinnati, Ohio. Stream Pollution Investigation Station.
Year Published 1939
Stock Number PB-215 137
Additional Subjects ( Aquatic microorganisms ; Trees) ; Algae ; Phytoplankton ; Protozoa ; Ecology ; Closed ecological systems ; Tree holes ; Tree stumps
Library Call Number Additional Info Location Last
NTIS  PB-215 137 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
Abstract Tree holes that contain water are rare. Occasionally one will be found which is in effect a permanent pool. With reference to their contained water they may be grouped roughly as those in the tops of living stumps, those in crotches or in the tops of protruding limbs or knots, and those in the sides of trees or limbs. Holes so far studied, with few exceptions, have contained rain water, that is, have been free from contamination by surface ground water. This report covers observations on 26 tree holes. About 140 species of algae and protozoa were recovered from these holes and are listed.
PUB Date Free Form 1939,
Category Codes 6F; 57H
NTIS Prices PC A02/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326540453
Origin NTIS
Type CAT