scholarly journals Phytoplankton Zooplankton Interrelationship between Two Ponds and Effect of Seasonal Fluctuations on their Abundance

2020 ◽  
Vol 15 (1) ◽  
pp. 7-13
Author(s):  
S.M. Majharul Islam ◽  
Md. Jahangir Alam ◽  
Md. Sulaiman
Keyword(s):  
Seasonal Fluctuations

Dynamic and seasonal fluctuations of microarthropod complex in coniferous forest soil

Ekologija ◽  
2008 ◽  
Vol 54 (4) ◽  
pp. 201-215 ◽  
Author(s):  
Irena Eitminavičiūtė ◽  
Audronė Matusevičiūtė ◽  
Algirdas Augustaitis
Keyword(s):  
Forest Soil ◽  
Coniferous Forest ◽  
Seasonal Fluctuations

Seasonal Fluctuations and Species Composition of Fish Collected by Long-bag Stow Net in Nang-island, Yeosu

2020 ◽  
Vol 32 (2) ◽  
pp. 91-96
Author(s):  
Tae-Sik Yu ◽  
Byoung-Il Youn ◽  
Joon Kim ◽  
Kyeong-Ho Han
Keyword(s):  
Species Composition ◽  
Seasonal Fluctuations

ON THE ISSUE OF THE SPREAD OF AEROMONAS BACTERIA IN THE ENVIRONMENT AND CLINICAL MATERIAL

2018 ◽  
pp. 54-57
Author(s):  
L.V. Kataeva ◽  
T.F. Stepanova ◽  
O.V. Posoyuznykh ◽  
V.V. Tashlanova ◽  
N.F. Karpukhina ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Species Diversity ◽  
Food Products ◽  
Water Bodies ◽  
Clinical Material ◽  
Seasonal Fluctuations ◽  
Infectious Process ◽  
Biological Safety ◽  
Resistance To Antibiotics ◽  
Environmental Objects

The analysis of cases of detection of bacteria of the genus Aeromonas in clinical material from various loci of patients of medical organizations was carried out. Their species diversity, isolation in monoculture and associations, resistance to antibiotics and spring-autumn rises indicate the etiological significance of these microorganisms in the infectious process. To improve the biological safety of aquatic biotopes, it is important to study their microbiocenosis, in particular, the circulation of bacteria of the genus Aeromonas, in order to obtain information on pathogenic properties, antibiotic resistance, and seasonal fluctuations. To prevent the spread of Aeromonas infections, it is necessary to carry out sanitary and bacteriological studies of water bodies, environmental objects and food products.

OBSERVATIONS ON SEASONAL FLUCTUATIONS IN 17‐KETOSTEROID OUTPUT IN, THE SUBTROPICS AND TROPICS

1955 ◽  
Vol 2 (19) ◽  
pp. 756-759 ◽  
Author(s):  
K. W. Robinson ◽  
B. Howard ◽  
W. V. Macfarlane
Keyword(s):  
Seasonal Fluctuations

Three-dimensional bluff evolution in response to seasonal fluctuations in Great Lakes water levels

2020 ◽  
Vol 46 (6) ◽  
pp. 1533-1543 ◽  
Author(s):  
C.A. Volpano ◽  
L.K. Zoet ◽  
J.E. Rawling ◽  
E.J. Theuerkauf ◽  
R. Krueger
Keyword(s):  
Great Lakes ◽  
Three Dimensional ◽  
Water Levels ◽  
Seasonal Fluctuations

Seasonal Fluctuations in Pituitary Gland and Plasma Levels of Gonadotropic Hormones inRana

1998 ◽  
Vol 109 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Jung W. Kim ◽  
Wook-Bin Im ◽  
Han H. Choi ◽  
S. Ishii ◽  
Hyuk B. Kwon
Keyword(s):  
Pituitary Gland ◽  
Plasma Levels ◽  
Seasonal Fluctuations ◽  
Gonadotropic Hormones

scholarly journals Seed bank dynamics in five Panamanian forests

2005 ◽  
Vol 21 (2) ◽  
pp. 223-226 ◽  
Author(s):  
D. A. Fornara ◽  
J. W. Dalling
Keyword(s):  
Seed Bank ◽  
Seedling Recruitment ◽  
Fruit Production ◽  
Pioneer Species ◽  
Seasonal Fluctuations ◽  
Annual Fluctuation ◽  
Soil Seed Banks ◽  
Successful Recruitment ◽  
Seed Bank Dynamics ◽  
Lowland Forests

Many tropical pioneer species depend on the presence of high seed densities in the soil for successful recruitment following canopy disturbance (Cheke et al. 1979, Dalling & Hubbell 2002, Guevara Sada & Gómez Pompa 1972, Whitmore 1983). However determinants of variation in the composition and abundance of soil seed banks remain poorly understood. Seed bank densities can be affected by rates of seed predation and pathogen infection on the surface and in the soil, by intrinsic rates of loss in viability following dispersal, and by variation in the timing and duration of fruit production (Dalling et al. 1997, Garwood 1983, Murray & Garcia 2002). Here we compare seasonal fluctuations in seed bank density in five Panamanian forests varying in elevation and seasonality of precipitation (Table 1). We predict that lowland forests should show stronger intra-annual fluctuation in seed bank densities than montane forests because seed production and loss rates should be higher under conditions of greater resource availability, and where consistent high temperatures support greater abundance or activity of seed predators and pathogens (Brühl et al. 1999). Secondly, among lowland sites, we predict greater fluctuations in seed bank densities at drier, more seasonal sites where seasonally favourable conditions for seedling recruitment may select for interspecific synchrony in fruit production (Daubenmire 1972, Garwood 1983).

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