Long-term changes in the life history of the Jamaican weakfish, Cynoscion jamaicensis (Vaillant and Bocourt, 1883), in southern Brazil

2020 ◽  
Vol 34 ◽  
pp. 101063
Author(s):  
Abner Ventura Alves ◽  
Manuel Haimovici ◽  
Luís Gustavo Cardoso
1984 ◽  
Vol 16 (5-7) ◽  
pp. 359-373 ◽  
Author(s):  
Anne R Henderson

The sublittoral macrobenthic invertebrate populations of the Upper Clyde Estuary are described. The estuary has a long history of organic pollution. The long term changes in species composition, faunal density and dominance patterns between 1974 and 1980 are presented. The fauna is dominated by brackish, pollution tolerant oligochaetes and polychaetes. Fluctuations in populations can be related to both seasonal variation in environmental conditions and long term improvements in water quality through a reduction in pollution loading to the estuary.


Author(s):  
P. E. P. Norton

SynopsisThis is a brief review intended to supply bases for prediction of future changes in the North Sea Benthos. It surveys long-term changes which are affecting the benthos. Any prediction must take into account change in temperature, depth, bottom type, tidal patterns, current patterns and zoogeography of the sea and the history of these is briefly touched on from late Tertiary times up to the present. From a prediction of changes in the benthos, certain information concerning the pelagic and planktonic biota could also be derived.


Neuroscience ◽  
2020 ◽  
Vol 443 ◽  
pp. 93-109
Author(s):  
Peter U. Hámor ◽  
Mariola J. Edelmann ◽  
Christina Gobin ◽  
Marek Schwendt

2011 ◽  
Vol 41 (6) ◽  
pp. 287-287 ◽  
Author(s):  
Cha Young Lee ◽  
Jeong Mi Hwang ◽  
Tae Joong Yoon ◽  
Dong Gun Kim ◽  
Min Jeong Beak ◽  
...  

2019 ◽  
Vol 8 ◽  
Author(s):  
Susan M Kenyon

Drawing on long-term ethnographic research in the Blue Nile town of Sennar, supported by archival and historical documentation, this article explores the history of Zar spirit possession in Sudan, and the light this throws on the interplay of religions over the past 150 years. Life history data supports the argument that contemporary Zar is grounded in forms and rituals derived from the ranks of the ninteenth-century Ottoman army, and these remain the basis of ritual events, even as they accommodate ongoing changes in this part of Africa. Many of these changes are linked to the dynamic interplay of Zar with forms of Islam, on the one hand, and Christianity, on the other. In the former colonial periods, political power resided with the British, and Khawaja (European) Christian Zar spirits are remembered as far more important. Today that authority in Zar has shifted to spirits of foreign Muslims and local holy men, on the one hand, and to subaltern Blacks, on the other. These speak to concerns of new generations of adepts even as changes in the larger political and religious landscapes continue to transform the context of Zar.


Author(s):  
Camilla Gåfvels

This article investigates how expressions of vocational knowing regarding colour and form changed in Swedish upper secondary floristry education between 1990 and 2015. An analytical approach is used which falls within the framework of a sociocultural interpretation of educational activity. During the period studied, subject matter related to colour and form became increasingly formalised. Empirical data was obtained from multiple sources, including two interviews with an experienced senior teacher, which helped to reveal the local history of a leading Swedish floristry school. The findings of the article are as follows: (i) conceptualisation, verbal analysis and reflection have gained prominence in Swedish floristry education since the 1990s, and (ii) these tools have increasingly served to help participants in education make and express aesthetic judgements. Through a discussion of various aspects of contemporary Swedish floristry education, the article illuminates the complexity of long-term changes in vocational knowing.


2020 ◽  
Author(s):  
Faye Cleary ◽  
David Prieto-Merino ◽  
Sally Hull ◽  
Ben Caplin ◽  
Dorothea Nitsch

Abstract Background Knowledge about the nature of long-term changes in kidney function in the general population is sparse. We aim to identify whether primary care electronic healthcare records capture sufficient information to study the natural history of kidney disease. Methods The National Chronic Kidney Disease Audit database covers ∼14% of the population of England and Wales. Availability of repeat serum creatinine tests was evaluated by risk factors for chronic kidney disease (CKD) and individual changes over time in estimated glomerular filtration rate (eGFR) were estimated using linear regression. Sensitivity of estimation to method of evaluation of eGFR compared laboratory-reported eGFR and recalculated eGFR (using laboratory-reported creatinine), to uncover any impact of historical creatinine calibration issues on slope estimation. Results Twenty-five per cent of all adults, 92% of diabetics and 96% of those with confirmed CKD had at least three creatinine tests, spanning a median of 5.7 years, 6.2 years and 6.1 years, respectively. Median changes in laboratory-reported eGFR (mL/min/1.73 m2/year) were −1.32 (CKD) and −0.60 (diabetes). Median changes in recalculated eGFR were −0.98 (CKD) and −0.11 (diabetes), underestimating decline. Magnitude of underestimation (and between-patient variation in magnitude) decreased with deteriorating eGFR. For CKD Stages 3, 4 and 5 (at latest eGFR), median slopes were −1.27, −2.49 and -3.87 for laboratory-reported eGFR and −0.89, −2.26 and −3.75 for recalculated eGFR. Conclusions Evaluation of long-term changes in renal function will be possible in those at greatest risk if methods are identified to overcome creatinine calibration problems. Bias will be reduced by focussing on patients with confirmed CKD.


2008 ◽  
Vol 65 (10) ◽  
pp. 2269-2278 ◽  
Author(s):  
Robert B. Lessard ◽  
Ray Hilborn ◽  
Brandon E. Chasco

We compare life-history models with the Beverton–Holt approach of escapement goal analysis. We model the life history of a sockeye salmon ( Onchorhynchus nerka ) population from a spawning stage, through juvenile and adult stages, and ending with adults that return to spawn. We fit models to data by statistically comparing predicted and observed numbers of four dominant adult ages. Posterior estimates of parameters from Markov chain Monte Carlo simulations are then used to assess optimal harvest policies. We search for policies that produce the highest average yield. We find that it is possible to detect density dependence with a life-history model where analysis of Beverton–Holt stock–recruitment relationship fails to do so. We find that Beverton–Holt relationships produce policies and long-term yield estimates that are inconsistent with empirical trends. Conversely, we find that optimal spawning stock sizes and maximum sustained yield estimates using the life-history model estimate are consistent with the historical behavior of fisheries examined. Adding smolt data to the analysis does not substantially change predicted optimal spawning stock size, but decreases the variance in estimated posterior parameter distributions and policy variable distributions.


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