Analysis of Spatial Autocorelation of Pteridium Aquilinum var. Latiusculum

2021 ◽  
Vol 23 (4) ◽  
pp. 1937-1946
Author(s):  
Man Kyu Huh
Keyword(s):  
Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1220
Author(s):  
Eduard V. Nekrasov ◽  
Vasily I. Svetashev

Young fronds of ferns are consumed as a vegetable in many countries. The aim of this study was to analyze three fern species that are available for sale in the Russian Far East as dietary sources in terms of fatty acids that are important for human physiology: arachidonic acid (20:4n-6, ARA), eicosapentaenoic acid (20:5n-3, EPA) and other valuable long-chain polyunsaturated fatty acids. The content of ARA and EPA was 5.5 and 0.5 mg/g dry weight, respectively, in Pteridium aquilinum, 4.1 and 1.1 in Matteuccia struthiopteris, and 2.2 and 0.8 in Osmundastrum asiaticum. Salted fronds of P. aquilinum contained less these fatty acids than the raw fronds, with a decrease of up to 49% for ARA and 65% for EPA. These losses were less pronounced or even insignificant in dried fronds. Cooked ferns preserved significant portions of the long-chain polyunsaturated fatty acids: cooked P. aquilinum contained 4.4 mg/g dry weight ARA and 0.3 mg/g dry weight EPA. The ferns may provide a supplemental dietary source of these valuable long-chain polyunsaturated fatty acids, especially for vegetarian diets.


1975 ◽  
Vol 31 (7) ◽  
pp. 829-831 ◽  
Author(s):  
M. Saito ◽  
M. Umeda ◽  
M. Enomoto ◽  
Y. Hatanaka ◽  
S. Natori ◽  
...  
Keyword(s):  

ChemInform ◽  
2010 ◽  
Vol 31 (3) ◽  
pp. no-no
Author(s):  
Uvidelio Francisco Castillo ◽  
Youji Sakagami ◽  
Miguel Alonso-Amelot ◽  
Makoto Ojika

2005 ◽  
Vol 83 (12) ◽  
pp. 1622-1629 ◽  
Author(s):  
J.K. Rowntree ◽  
E. Sheffield

The systemic herbicide asulam is used extensively to control the weedy fern bracken ( Pteridium aquilinum (L.) Kuhn). Other ferns were thought to be highly sensitive to asulam exposure, but there has been a dearth of experimental evidence. Eight fern species were exposed to asulam spray at three different application rates or a control of water. Asulam was applied at the recommended field application rate for bracken clearance, and at two further rates corresponding to 10 and 50 m downwind of an aerial spray event. Damage was assessed over two seasons. All ferns tested were severely damaged by exposure to the highest application rate, but sensitivity varied between species. Maximum damage occurred 1 year after spraying, and limited signs of recovery could be seen by the second season. The effects of adding the adjuvant Agral® to applications of asulam were tested on the threatened pteridophyte Pilularia globulifera L. No damage additional to that caused by exposure to asulam was observed. This work supports the view that 50 m buffer zones are sufficient to protect sensitive ferns from the effects of aerial spraying with asulam, provided that drift-reducing nozzles are used and the manufacturer’s application guidelines are observed.


2003 ◽  
Vol 1 (1) ◽  
pp. 22-29 ◽  
Author(s):  
R. C. Recouso ◽  
R. C. Stocco dos Santos ◽  
R. Freitas ◽  
R. C. Santos ◽  
A. C. de Freitas ◽  
...  

2002 ◽  
Vol 7 (1) ◽  
Author(s):  
W. S. MARÇAL ◽  
L. GASTE ◽  
N. C. REICHERT NETTO ◽  
F. A. MONTEIRO

Os autores descrevem a ocorrência de um surto de intoxicação aguda pela samambaia (Pteridium aquilinum, L. Kuhn), em bovinos da raça Aberdeen angus, criados numa propriedade rural localizada no município de Ortigueira, estado do Paraná. Um total de 14 animais vieram a óbito e a ocorrência do surto reacende a necessidade de encontrar soluções, mesmo que paliativas, para a prevenção de novos episódios. Segundo os autores, a superlotação de animais nos piquetes, tornaram as pastagens cultivadas muito baixas, favorecendo a procura pela samambaia, que mantinha-se mais viçosa e atraente ao consumo, o que possibilitou uma ingestão de grande quantidade em curto espaço de tempo. Acute intoxication by bracken fern (Pteridium aquilinum, L. Kuhn) In Aberdeen angus breed Abstract The present paper gives an account of a herd intoxication caused by the ingestion of bracken fern (Pteridium aquilinum,L. Kuhn) that took place in a farm at the region of Ortigueira, State of Paraná. Fourteen Aberdeen Angus bovines died of acute intoxication caused by the ingestion of large amounts of this toxic plant. Overpopulated and low nutrient quality pastured areas induce the large ingestion of bracken fern. Due to these reasons there is an urgent need for adequate solutions aiming to prevent the occurrence of such episodes.


2007 ◽  
Vol 10 (3) ◽  
pp. 429-440 ◽  
Author(s):  
E.S. Cox ◽  
R.H. Marrs ◽  
R.J. Pakeman ◽  
M.G. Duc

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