Integrated LTS gradiometer SQUID systems for unshielded measurements in a disturbed environment

1996 ◽  
Vol 9 (4A) ◽  
pp. A112-A115 ◽  
Author(s):  
V Zakosarenko ◽  
L Warzemann ◽  
J Schambach ◽  
K Blüthner ◽  
K-H Berthel ◽  
...  
2021 ◽  
Vol 12 (1) ◽  
pp. 48
Author(s):  
Moussa Side ◽  
Eby Yoboué Gnamma Honorine Alla ◽  
Behiri Innocent Kakou ◽  
Béatrice Abouo Adepo-Gourene

The growth and size at first sexual maturity of the species Ethmalosa fimbriata were studied in two sites in the Ebrié lagoon: Bietri, a highly anthropized environment and Vitré 2, a reference site. Growth parameters estimated from size frequencies showed that growth in both size and weight was faster in females than in males regardless of habitat. On the other hand, specimens from Biétri bay have a slower growth rate than those from Vitré 2. In Bietri bay, individuals are characterized by early sexual maturity. They reach sexual maturity at the age of 0.55 years (about 7 months), corresponding to a size of 6.13 cm for males and 8.42 cm for females; whereas in Vitré 2, they reach sexual maturity at the age of 0.82 years (about 10 months) corresponding to a size of 10.22 cm and 12.94 cm for males and females respectively. These results show that in a highly antropic environment, the growth of Ethmalosa fimbriata is affected and individuals reproduce earlier.


2020 ◽  
Vol 55 (3) ◽  
pp. 185-193
Author(s):  
Yuri Hoyo ◽  
Yoichiro Hoshino ◽  
Shiro Tsuyuzaki

Oikos ◽  
1987 ◽  
Vol 48 (3) ◽  
pp. 321 ◽  
Author(s):  
J. R. Krummel ◽  
R. H. Gardner ◽  
G. Sugihara ◽  
R. V. O'Neill ◽  
P. R. Coleman

2020 ◽  
Vol 66 (No. 9) ◽  
pp. 383-392
Author(s):  
Afsheen Khan

The present study focuses on the forest structure of highly disturbed sites in Western Himalayan regions in Pakistan. In this study, the regeneration potential of conifer species is a key point for the assessment of future conifer status in disturbed environment by employing multivariate techniques. The forests are composed of four conifer species Pinus wallichiana A. B. Jacks, Pinus roxburghii Sarg., Cedrus deodara (Roxb.) G. Don, and Abies pindrow (Royle ex D. Don) Royle., associated with broadleaved species Quercus baloot Griffith, Quercus dilatata Raf., and Aesculus indica (Wall. ex Cambess.) Hook. Cluster analysis shows five groups when Pinus wallichiana (PW) forms the largest group, incorporates with other conifers and broadleaved species and in some cases it overlaps with its subgroups forming a pure larger group. Similarly in DCA (ordination) overlapping exists in all the axes while elevation is the only variable that shows a highly significant (P < 0.001) correlation with conifers. Cedrus deodara (CD) with Quercus baloot (QB) and Aesculus indica (AI) shares a significant (P < 0.05) correlation in the same habitat while there is no correlation between the remaining conifers. It is anticipated that overlapping in cluster analysis and ordination and non-significant correlations in cluster analysis and ordination are due to the highly disturbed nature of the sites. It is also suggested that seedling recruitment and development are highly affected due to the anthropogenic disturbance. Therefore, proper maintenance of the forest, proper management and conservational practice should be imposed. 


1999 ◽  
Vol 9 (2) ◽  
pp. 3793-3796 ◽  
Author(s):  
F. Ludwig ◽  
J. Beyer ◽  
D. Drung ◽  
S. Bechstein ◽  
T. Schurig

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