An Atlas of Airborne Pollen Grains and Common Fungus Spores of Canada PDF Download

Author: I. John Bassett
Publisher: Research Branch, Canada Department of Agriculture
ISBN:
Category : Science
Languages : en
Pages : 332

View

Book Description
Descriptions and keys of 143 pollen and several spore types that have been found to be airborne in different locations, accompanied by photographs made by using light and scanning electron microscopy. The general abundance, distribution of taxa, time of pollen shedding, significance in causing hay fever, and other pertinent data are included.

Author: Canadian Government Publishing
Publisher:
ISBN: 9780660100159
Category :
Languages : en
Pages : 321

View

Book Description

Author: S. Nilsson
Publisher: Springer Science & Business Media
ISBN: 3642688039
Category : Science
Languages : en
Pages : 145

View

Book Description
The present atlas is addressed mainly to those who, departing from different spheres of interest, are studying the dispersal of fungus spores in the air, like aero biologists, plant pathologists, medical mycologists, allergologists, or those interested in spore morphology as a taxonomic tool. The steadily increasing interest in air pollution problems has also stimulat ed investigations in the microbiological fraction of air pollutants. During the last decades the study of microbial life in the atmosphere has developed to a special branch of biological sciences - aerobiology of which the first studies are from the end of the last century. Besides pollen grains and spores of higher plants and bacteria, fungal diaspores contribute a constant and sub stantial part of the airborne microorganisms. Methods for studying airborne spores are described and critically discussed by e. g. Dimmick and Akers (1969), Ingold (1971) and Gregory (1973). The actual content of fungus spores in the air is a result of complicated processes, all of which are influ enced by external factors in different ways. The influence of the different meteorological factors on spore formation, liberation, transport and deposi tion is essentially discussed by Ingold and Gregory. There are considerable difficulties in identifying detached fungus spores visually. The taxonomy of the fungi is often based on the ontogeny of the spores which cannot be followed by examination of single spores in the air. The conidial development in Deuteromycotina and structure of conidiopho res are excellently described and illustrated by Cole and Samson (1979).

Author: S. Nilsson
Publisher: Springer
ISBN: 9783642688041
Category : Science
Languages : en
Pages : 139

View

Book Description
The present atlas is addressed mainly to those who, departing from different spheres of interest, are studying the dispersal of fungus spores in the air, like aero biologists, plant pathologists, medical mycologists, allergologists, or those interested in spore morphology as a taxonomic tool. The steadily increasing interest in air pollution problems has also stimulat ed investigations in the microbiological fraction of air pollutants. During the last decades the study of microbial life in the atmosphere has developed to a special branch of biological sciences - aerobiology of which the first studies are from the end of the last century. Besides pollen grains and spores of higher plants and bacteria, fungal diaspores contribute a constant and sub stantial part of the airborne microorganisms. Methods for studying airborne spores are described and critically discussed by e. g. Dimmick and Akers (1969), Ingold (1971) and Gregory (1973). The actual content of fungus spores in the air is a result of complicated processes, all of which are influ enced by external factors in different ways. The influence of the different meteorological factors on spore formation, liberation, transport and deposi tion is essentially discussed by Ingold and Gregory. There are considerable difficulties in identifying detached fungus spores visually. The taxonomy of the fungi is often based on the ontogeny of the spores which cannot be followed by examination of single spores in the air. The conidial development in Deuteromycotina and structure of conidiopho res are excellently described and illustrated by Cole and Samson (1979).

Author: Eugene Cecil Ogden
Publisher:
ISBN:
Category : Fungi
Languages : en
Pages : 112

View

Book Description

Author: Eugene Cecil Ogden
Publisher:
ISBN:
Category : Fungi
Languages : en
Pages : 72

View

Book Description

Author: Siwert Tage Nilsson
Publisher: Natur Och Kultur
ISBN:
Category : Nature
Languages : da
Pages : 168

View

Book Description

Author: Alfred Traverse
Publisher: Springer Science & Business Media
ISBN: 1402056109
Category : Science
Languages : en
Pages : 816

View

Book Description
This book provides complete coverage of all aspects of the study of all fossil palynomorphs yet studied. It is a profusely illustrated treatment. The book serves both as a student text and general reference work. Palynomorphs yield information about age, geological and biological environment, climate during deposition, and other significant factors about the enclosing rocks. Extant spores and pollen are treated first, preparing the student for more difficult work with fossil sporomorphs and other kinds of palynomorphs. An appendix describes laboratory methods. The glossary, bibliographies and index are useful tools for study of the literature.

Author: British Standards Institute Staff
Publisher:
ISBN: 9780580882456
Category :
Languages : en
Pages : 38

View

Book Description
Radioactive sources, Emission, Air, Musci, Air pollution, Samples, Lichenes

Author: Eugene Cecil Ogden
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 196

View

Book Description