Abstract
1. The analytical studies were made to clarify the community structure after drainage, especially of the amphiphyte zone on the littoral areas. Three typical types of vegetation are recognized in about thirty artificial reservoirs, in Fukui, Shiga and Hiroshima Prefectures in Japan, whose basins are dried up in summer.2. The first vegetation type indicates the regular zonal arrangement, and is characterized by the amphiphyte zone which is predominated by the annual plant communities. The second type exhibits the typical vegetation type, which is the intermediate structure between the first and the third, as usually found in many never-dried up pond vegetations, and its amphiphyte zone is occupied by the communities of both of the large- and the small-stemmed emergent plants. The third type shows the marshy vegetation, and it is most remarkable that its amphiphyte zone which is occupied by the communities of the large-stemmed emergent plants, especially by Phragmites, spread out over the central areas.3. According to the analytical studies of life-form spectrum, Hemicryptophytes generally seem to be abundant in the basins of all three types. Besides, the amphiphte zone of the first type indicates therophytic, of the second shows hydrophytic and of the third is helophytic type.4. The components of Therophytes in each dominant community remarkably increase in the amphyiphyte zone of the first vegetation type, though they decrease in those of the second type. On the contrary, the helophytic components are moderately poor in the amphiphyte zone of the first type though they are considerably abundant in the second and the third vegetation types.5. The hydrarch which succeeded from the first to the second and ended in the third type will be illustrated in the vegetation among the three types of the artificial reservoirs.6. The preservation of seeds of the annuals under the edaphic condition in winter, interspecific correlation between the germination ability of annuals, and the biotic control of Helophyes to annuals will be effective for the development of early stage of the community after drainage in the artificial reservoirs.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Three vegetation types occur in periodically dried reservoirs.
Verbatim
e0“Three typical types of vegetation are recognized in about thirty artificial reservoirs, in Fukui, Shiga and Hiroshima Prefectures in Japan”
Claim · model-written summary
The first type has a regular zonation with annual dominated amphiphyte communities.
Verbatim
e0“The first vegetation type indicates the regular zonal arrangement, and is characterized by the amphiphyte zone which is predominated by the annual plant communities”
Claim · model-written summary
The second type has an intermediate structure and mixed emergent plant communities.
Verbatim
e0“The second type exhibits the typical vegetation type, which is the intermediate structure between the first and the third, as usually found in many never-dried up pond vegetations, and its amphiphyte zone is occupied by the communities of both of the large- and the small-stemmed emergent plants”
Claim · model-written summary
The third type has marsh vegetation dominated by large emergent plants, especially Phragmites, extending centrally.
- Taxon
- Phragmites
Phragmitese0 - Outcome
- amphiphyte zonee0
- Direction
- spread out over the central arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The third type shows the marshy vegetation, and it is most remarkable that its amphiphyte zone which is occupied by the communities of the large-stemmed emergent plants, especially by Phragmites, spread out over the central areas”
Claim · model-written summary
Hemicryptophytes are generally abundant in all three reservoir types.
Verbatim
e0“Hemicryptophytes generally seem to be abundant in the basins of all three types”
Claim · model-written summary
The amphiphyte zones are therophytic, hydrophytic and helophytic in the first, second and third vegetation types, respectively.
Verbatim
e0“the amphiphte zone of the first type indicates therophytic, of the second shows hydrophytic and of the third is helophytic type”
Claim · model-written summary
Therophyte components increase in the first type and decrease in the second.
Verbatim
e0“The components of Therophytes in each dominant community remarkably increase in the amphyiphyte zone of the first vegetation type, though they decrease in those of the second type”
Claim · model-written summary
Helophytic components are sparse in the first type and abundant in the second and third.
Verbatim
e0“the helophytic components are moderately poor in the amphiphyte zone of the first type though they are considerably abundant in the second and the third vegetation types”
Claim · model-written summary
The reservoir vegetation is interpreted as a hydrach succession from first through second to third type.
Verbatim
e0“The hydrarch which succeeded from the first to the second and ended in the third type will be illustrated in the vegetation among the three types of the artificial reservoirs”
Claim · model-written summary
Winter seed preservation, annual germination correlation and helophyte control may shape early communities after drainage.
Verbatim
e0“The preservation of seeds of the annuals under the edaphic condition in winter, interspecific correlation between the germination ability of annuals, and the biotic control of Helophyes to annuals will be effective for the development of early stage of the community after drainage in the artificial reservoirs”