scholarly journals Erratum to: Potential for population-level disturbance by active sonar in herring

Author(s):  
L D Sivle ◽  
P H Kvadsheim ◽  
M A Ainslie
2014 ◽  
Vol 72 (2) ◽  
pp. 558-567 ◽  
Author(s):  
L.D. Sivle ◽  
P.H. Kvadsheim ◽  
M.A. Ainslie

Abstract For conservation purposes, it is important to evaluate potential population consequences of noise disturbance. Based on maximum reported sound levels of no response to sonar, a mathematical model is used to predict the potential risk to the population of herring (Clupea harengus) when these levels are exceeded. Results show that risk varies with season depending on density of fish. During widespread feeding, the risk of any population consequences is low even at sonar source levels up to 235 dB (re 1 µPa m) and exercise durations exceeding 24 h at sonar frequencies 1–2 kHz. The risk of population effects increases in periods when the population aggregates, but given that our response estimates are conservative, it seems unlikely that today’s naval sonar activity will lead to population consequences in Atlantic herring.


2020 ◽  
Vol 158 (3) ◽  
pp. S102
Author(s):  
Ryan Suk ◽  
Heetae Suk ◽  
Kalyani Sonawane ◽  
Ashish Deshmukh

2020 ◽  
Vol 139 ◽  
pp. 93-102 ◽  
Author(s):  
MF Van Bressem ◽  
P Duignan ◽  
JA Raga ◽  
K Van Waerebeek ◽  
N Fraijia-Fernández ◽  
...  

Crassicauda spp. (Nematoda) infest the cranial sinuses of several odontocetes, causing diagnostic trabecular osteolytic lesions. We examined skulls of 77 Indian Ocean humpback dolphins Sousa plumbea and 69 Indo-Pacific bottlenose dolphins Tursiops aduncus, caught in bather-protecting nets off KwaZulu-Natal (KZN) from 1970-2017, and skulls of 6 S. plumbea stranded along the southern Cape coast in South Africa from 1963-2002. Prevalence of cranial crassicaudiasis was evaluated according to sex and cranial maturity. Overall, prevalence in S. plumbea and T. aduncus taken off KZN was 13 and 31.9%, respectively. Parasitosis variably affected 1 or more cranial bones (frontal, pterygoid, maxillary and sphenoid). No significant difference was found by gender for either species, allowing sexes to be pooled. However, there was a significant difference in lesion prevalence by age, with immature T. aduncus 4.6 times more likely affected than adults, while for S. plumbea, the difference was 6.5-fold. As severe osteolytic lesions are unlikely to heal without trace, we propose that infection is more likely to have a fatal outcome for immature dolphins, possibly because of incomplete bone development, lower immune competence in clearing parasites or an over-exuberant inflammatory response in concert with parasitic enzymatic erosion. Cranial osteolysis was not observed in mature males (18 S. plumbea, 21 T. aduncus), suggesting potential cohort-linked immune-mediated resistance to infestation. Crassicauda spp. may play a role in the natural mortality of S. plumbea and T. aduncus, but the pathogenesis and population level impact remain unknown.


2019 ◽  
Author(s):  
Claire Beynon ◽  
Nora Pashyan ◽  
Elizabeth Fisher ◽  
Dougal Hargreaves ◽  
Linda Bailey ◽  
...  

2012 ◽  
Vol 153 (26) ◽  
pp. 1023-1030 ◽  
Author(s):  
Éva Martos ◽  
Viktória Anna Kovács ◽  
Márta Bakacs ◽  
Csilla Kaposvári ◽  
Andrea Lugasi

Obesity is a leading public health problem, but representative data on measured prevalence among Hungarian adults has been missing since the late eighties. Aim and method: Joining in European Health Interview Survey the aim of the OTAP2009 study was to provide data representative by age and gender on the prevalence of obesity and abdominal obesity among Hungarian adults based on their measured anthropometric data. Results: Participation rate was 35% (n = 1165). Data shows that nearly two-thirds of adults are overweight or obese. 26.2% of men and 30.4% of women are obese. Prevalence of morbid obesity is 3.1% and 2.6% in men and women, respectively. Abdominal obesity is more prevalent among women than men (51.0% vs. 33.2%), and rate is increasing parallel with age in both gender. In elderly, 55% of men and almost 80% of women are abdominally obese. Conclusions: Besides interventions of population level for tackling obesity, individual preventive measures are indispensable. Orv. Hetil., 2012, 153, 1023–1030.


2002 ◽  
Vol 8 (1) ◽  
pp. 219-228 ◽  
Author(s):  
Emil Broman ◽  
Kjell Wallin ◽  
Margareta Steén ◽  
Göran Cederlund

Author(s):  
Nurul Rofiqo ◽  
Agus Perdana Windarto ◽  
Dedy Hartama

This study aims to utilize Clushtering Algorithm in grouping the number of people who have health complaints with the K-means algorithm in Indonesia. The source of this research data was collected based on the documents of the provincial population which had health complaints produced by the National Statistics Agency. The data used in this study are data from 2013-2017 consisting of 34 provinces. The method used in this research is K-means Algorithm. Data will be processed by clushtering in 3 clushter, namely clusther high health complaints, clusther moderate and low health complaints. Centroid data for high population level clusters 37.48, Centroid data for moderate population level clusters 27.08, and Centroid data for low population level clusters 14.89. So that obtained an assessment based on the population index that has health complaints with 7 provinces of high health complaints, namely Central Java, Yogyakarta, Bali, West Nusa Tenggara, East Nusa Tenggara, South Kalimantan, Gorontalo, 18 provinces of moderate health complaints, and 9 other provinces including low health complaints. This can be an input to the government to give more attention to residents in each region who have high health complaints through improving public health services so that the Indonesian population becomes healthier without health complaints.Keywords: data mining, health complaints, clustering, K-means, Indonesian residents


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