Ecological aspects of bamboo flowering ecological studies of bamboo forests in Japan, XIII

1974 ◽  
Vol 87 (4) ◽  
pp. 271-284 ◽  
Author(s):  
Makoto Numata ◽  
Isao Ikusima ◽  
Nobunori Ohga
Keyword(s):  
Ecological Studies ◽  
Ecological Aspects ◽  
Bamboo Flowering

scholarly journals Periphytic Cosmarium (Zygnematophyceae, Desmidiaceae) in lentic environments of the Upper Paraná River floodplain: Taxonomy and ecological aspects

2018 ◽  
Vol 30 (0) ◽  
Author(s):  
Nicolli Cristina Osório ◽  
Aparecida Miranda Polinario ◽  
Bárbara Dunck ◽  
Kisay Lorena Adame ◽  
Luciana Carapunarla ◽  
...  
Keyword(s):  
Paraná River ◽  
Taxonomic Study ◽  
Ecological Studies ◽  
River Floodplain ◽  
Parana River ◽  
Ecological Aspects ◽  
Eichhornia Azurea ◽  
Upper Paraná River Floodplain ◽  
Upper Paraná River ◽  
Paraná River Floodplain

Abstract Aim A taxonomic study of the species of the genus Cosmarium Corda ex Ralfs (Desmidiaceae) was conducted in two lentic environments of the Upper Paraná River Floodplain (Garças and Patos lakes). Methods The samples were collected in November 2016. Two petioles of Eichhornia azurea (Sw) Kunth were sampled and analyzed qualitatively. Results Six species, nine varieties, and three forms were identified, with five taxa being common to both lakes, nine in Garças Lake, and four in Patos Lake. Of this, thirteen species represent the first records for the floodplain environment. Conclusion This study contributes to the knowledge of the biodiversity of this region, providing support for future ecological studies and biomonitoring.

IV.—Some Ecological Aspects of the Intertidal Area of the Estuary of the Aberdeenshire Dee

1941 ◽  
Vol 60 (1) ◽  
pp. 107-139 ◽  
Author(s):  
Alec Milne
Keyword(s):  
Physical Environment ◽  
Salt Content ◽  
Magnesium Content ◽  
Summer Temperature ◽  
Light Penetration ◽  
Ecological Studies ◽  
Intertidal Area ◽  
Ecological Aspects ◽  
Total Salt Content ◽  
Homogeneous Environment

In the seaward direction in an estuary there are usually the following main gradients:—(a) Increase in osmotic pressure (total salt content, especially chlorides).(b) Increase in calcium and magnesium content.(c) Increase in alkalinity.(d) Increase in winter and decrease in summer temperature.(e) Increase in light penetration.There are other gradients of less importance. The first three are dependent on salinity. Thus, from the ecological standpoint, the three important physical observations relative to the study of estuarine life are the salinity, temperature, and light (silt content) gradients.Ecological studies are directed towards the elucidation of two types of problems:(i) Characteristics of the physical environment relevant to the distribution of specific forms of life.(ii) The growth of mixed populations and their interrelations in a homogeneous environment or in a physical gradient.The present study concerns itself especially with the former, and to a less extent with the latter.

Phytosociologioal and Ecological Studies of Maktila Sector of Sidi-Barrani IV. Range potentialities of the communities

1975 ◽  
Vol 86 (9-10) ◽  
pp. 579-587
Author(s):  
A. M. Migahid ◽  
H. M. El-Sharkawi ◽  
K. H. Batanouny ◽  
A. F. Shalaby
Keyword(s):  
Ecological Studies

ECOLOGICAL ASPECTS OF DAGESTAN NATURAL WATER PROTECTION

2019 ◽  
Vol 77 (2) ◽  
pp. 55-59
Author(s):  
T.I., Abdulganieva ◽  
◽  
Sh.G. Samedov ◽  
S.A., Mamaev ◽  
A.S. Kurbanismailova ◽  
...  
Keyword(s):  
Natural Water ◽  
Water Protection ◽  
Ecological Aspects
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