نتایج جستجو برای: fish harvesting

تعداد نتایج: 131730  

H. Nowzari, M. Farhadian S. Moradi

This study aimed to investigate the concentrations of two heavy metals, lead and cadmium, in the water of Zayandehroud River which is surrounded by Zarinshahr rice farms. Water was sampled from a depth of 30 cm during June, July and August 2015, i.e. during the process of planting, growing and after harvesting, in three stations. Water was collected from three points; 20m before the farms, besi...

Farhadian, M., Moradi, S., Nowzari, H.,

This study aimed to investigate the concentrations of two heavy metals, lead and cadmium, in the water of Zayandehroud River which is surrounded by Zarinshahr rice farms. Water was sampled from a depth of 30 cm during June, July and August 2015, i.e. during the process of planting, growing and after harvesting, in three stations. Water was collected from three points; 20m before the farms, besi...

Fish sardines play a key role in the primary chain of production in the sea, and unknowing harvesting of them causes irreparable damage to the marine ecosystem. Also, genetic studies can help preserve biodiversity and take steps to protect the reserves. In this research, the population dynamic of the Amblygaster sirm and it,s the maximum sustainable yield (MSY) were surveyed and calculated and ...

Journal: :Communicable diseases intelligence quarterly report 2014
Katrina Knope Timothy S Sloan-Gardner Russell J Stafford

We report on human illness due to histamine fish poisoning outbreaks in Australia from 2001 to 2013. Histamine fish poisoning results from the ingestion of histamine contained within the flesh of certain fish species that naturally contain histidine, which has been converted to histamine by spoilage bacteria following poor handling or temperature control after harvesting. While symptoms vary, a...

2011
M. R. Islam M. R. Haque

Investigation was carried out from June to August 2009. A total of 40 fish farmers were selected from northwest two upazila namely Debigonj (n=20) and Boda (n=20) where both men and women were targeted. Focus group discussion (FGD) and cross-check interview were conducted to get an overview on carp farming. From 1991-1995, 1996-2000 and after 2000; 17.5%, 45% and 37.5% of fish farmers started c...

Journal: :Journal of Innovation and Applied Technology 2022

Community service activities for catfish aquaculture with tarpaulin ponds in Tuatuka, East Kupang District, Nusa Tenggara Province. The problems are the potential of natural resources that have not been optimized and desire Agape Farmer Group who wants to progress but is constrained by limited knowledge making ponds, preparation media, stocking larva, maintenance, feeding, monitoring water qual...

2005
Christopher J. Costello Stephen Polasky

Reserves (areas closed to extraction) are increasingly being adopted as a management tool. Two primary arguments are used for their implementation. The first is a biological argument that biodiversity can prosper inside the reserve. The second is that by ceasing harvest inside a reserve we may generate such a large production of individuals, that “spillover” into the harvested region will actua...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2012
A W Chin S F Huelga M B Plenio

The quantum dynamics of transport networks in the presence of noisy environments has recently received renewed attention with the discovery of long-lived coherences in different photosynthetic complexes. This experimental evidence has raised two fundamental questions: firstly, what are the mechanisms supporting long-lived coherences; and, secondly, how can we assess the possible functional role...

Journal: :Bulletin of mathematical biology 2005
R Quentin Grafton Tom Kompas David Lindenmayer

To help manage the fluctuations inherent in fish populations scientists have argued for both an ecosystem approach to management and the greater use of marine reserves. Support for reserves includes empirical evidence that they can raise the spawning biomass and mean size of exploited populations, increase the abundance of species and, relative to reference sites, raise population density, biom...

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