scholarly journals Age‐dependent patterns of spatial autocorrelation in fish populations

Ecology ◽  
2021 ◽  
Author(s):  
Jonatan F. Marquez ◽  
Bernt‐Erik Sæther ◽  
Sondre Aanes ◽  
Steinar Engen ◽  
Are Salthaug ◽  
...  
Keyword(s):  
Spatial Autocorrelation ◽  
Fish Populations ◽  
Age Dependent

Use of An Age-Dependent Mark–Recapture Model in Fisheries Research

1983 ◽  
Vol 40 (9) ◽  
pp. 1449-1455 ◽  
Author(s):  
K. H. Pollock ◽  
R. H. K. Mann
Keyword(s):  
Survival Rate ◽  
Northern Pike ◽  
Fish Populations ◽  
Size Estimation ◽  
Differential Survival ◽  
Mark Recapture ◽  
Wide Range ◽  
Age Dependent ◽  
Using Data ◽  
And Migration

An age-dependent generalization of the Jolly–Seber mark–recapture model for fish populations subject to birth, death, and migration is illustrated using data from a study on northern pike (Esox lucius) in Dorset, England. These data show strong evidence of differential survival with age. We estimate the average annual survival rate to be 50% for the pike aged 2 or more years and 34% for those of age 1 yr. We believe that this age-dependent mark–recapture model could be very useful for a wide range of fisheries research and management problems. Often in fisheries work the assumption that survival is independent of age has not been examined critically. We present guidelines helpful in designing mark–recapture studies. This includes a useful design which increases precision and also allows population size estimation to be robust to unequal catchability (heterogeneity or trap response) within an age-class.

Effects of Hyperoxia on Lung Utrastructure

1970 ◽  
Vol 28 ◽  
pp. 26-27
Author(s):  
Gladys Harrison
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Light Microscopy ◽  
Oxygen Effects ◽  
Age Dependent ◽  
The Central Nervous System ◽  
The Subject ◽  
Space Age ◽  
Alveolar Septa ◽  
Extensive Damage

With the advent of the space age and the need to determine the requirements for a space cabin atmosphere, oxygen effects came into increased importance, even though these effects have been the subject of continuous research for many years. In fact, Priestly initiated oxygen research when in 1775 he published his results of isolating oxygen and described the effects of breathing it on himself and two mice, the only creatures to have had the “privilege” of breathing this “pure air”.Early studies had demonstrated the central nervous system effects at pressures above one atmosphere. Light microscopy revealed extensive damage to the lungs at one atmosphere. These changes which included perivascular and peribronchial edema, focal hemorrhage, rupture of the alveolar septa, and widespread edema, resulted in death of the animal in less than one week. The severity of the symptoms differed between species and was age dependent, with young animals being more resistant.

1248: Impact of Surgical Treatment of Renal Carcinoma on Renal Function and Blood Pressure: A Race- and Age-Dependent Association

2007 ◽  
Vol 177 (4S) ◽  
pp. 411-412
Author(s):  
Javier Miller ◽  
Angela Smith ◽  
Kris Gunn ◽  
Erik Kouba ◽  
Eric M. Wallen ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Renal Function ◽  
Surgical Treatment ◽  
Renal Carcinoma ◽  
Age Dependent

Age-dependent differences in postoperative HLA-DR expression in cardiac surgery patients

2011 ◽  
Vol 59 (S 01) ◽  
Author(s):  
K Lazouski ◽  
A Zittermann ◽  
M Schmidt ◽  
J Gummert ◽  
J Börgermann
Keyword(s):  
Cardiac Surgery ◽  
Hla Dr ◽  
Age Dependent
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