Results 61 to 70 of about 310,492 (212)

Technological change and the tragedy of the commons: the Lofoten fishery over hundred and thirty years [PDF]

open access: yes, 2008
Why did the Lofoten cod fishery in Norway – a fishery on one of the world’s richest spawning grounds - remain less productive than alternative industries until the mid-1960s, despite important modernization of the fleet and fishing gear, improvements in ...
Hannesson, Rögnvaldur   +2 more
core   +1 more source

Polyculture of Giant Freshwater Prawn, Macrobrachium rosenbergii and Nilem Carp, Osteochilus hasselti Cultured in Recirculation System Using Biofiltration

open access: yesE3S Web of Conferences, 2018
Giant Freshwater Prawn is one of the freshwater commodity which have an economy value where Nilem carp has also potentially to be cultured to produce fingerling size as a “baby fish”.
Setiadi Eri, Taufik Imam
doaj   +1 more source

Diagnosing of Biological Productivity in Lake Ecosystems

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2019
This work presents the system for biological productivity estimation in lake ecosystems. Input parameters of system (x – variables) are latitude, specific catchment area, average annual air temperature, annual sum precipitation, mean and maximum water ...
Viktor V. Boulion
doaj   +1 more source

Resilient livelihoods and food security in coastal aquatic agricultural systems: Investing in transformational change [PDF]

open access: yes, 2012
Aquatic agricultural systems (AAS) are diverse production and livelihood systems where families cultivate a range of crops, raise livestock, farm or catch fish, gather fruits and other tree crops, and harness natural resources such as timber, reeds, and ...

core  

THE EFFECT OF MEAN FINGERLING WEIGHT ON THE RESULTS OF YOUNG-OF-THE-YEAR PADDLEFISH (POLYODON SPATHULA WALBAUM) REARING

open access: yesRibogospodarsʹka Nauka Ukraïni, 2015
Purpose. To determine the optimum fingerling body weight during the process of young-of-the-year paddlefish (Polyodon spathula Walbaum) rearing. To adapt the existing technologies of young-of-the-year paddlefish rearing to conditions of southern Ukraine.
N. Grudko
doaj   +1 more source

The features of the natural fish productivity formation of a shallow reservoir free of ichthyofauna on the western slope of the Volga upland within Penza region

open access: yesИзвестия высших учебных заведений. Поволжский регион: Естественные науки, 2023
Background. The development of “artisanal” aquaculture, fish farming, fish cultivation in reservoirs of complex purpose is given great importance, both at the global level, in the Russian Federation and in Penza region.
Alik Yu. Asanov
doaj   +1 more source

Fish Productivity and Species Diversity of Floodplain Lakes the River Basin Pripyat [PDF]

open access: yes, 2012
Розглянуто умови формування видового складу та рибопродуктивності заплавних озер басейну р. Прип’ять – якість води, кормова база, потенційна і фактична рибопродуктивність.
Gryb, Yo. W.   +5 more
core  

EFFECT OF FEEDING PREMIX VMA AND FEEDYEAST ON PRODUCTIVE CHARACTERISTICS AND BLOOD BIOCHEMICAL PARAMETERS OF THE ONE-YEARS CARP (CYPRINUS CARPIO)

open access: yesRibogospodarsʹka Nauka Ukraïni, 2014
Purpose. To study the effect of feeding carp with VMA premix in a complex with fodder yeasts and separately on their productivity and some biochemical parameters of blood as well as to analyze the level of provision of the experimental groups of fish ...
O. Deren
doaj   +1 more source

THE EFFECT OF FISH FEEDING WITH ADDITIVES NUPRO® AND BIO-MOS® ON THE RESULTS OF THE REARING OF AGE-1+ CARP (CYPRINUS CARPIO CARPIO)

open access: yesRibogospodarsʹka Nauka Ukraïni, 2015
Purpose. To investigate the effect of feed fish with the additives NUPRO® and BIO-MOS® on the results of the rearing of age-1+ carp (Cyprinus carpio L.). Methodology.
А. Vaschenko, N. Matvienko
doaj   +1 more source

The origins of intensive marine fishing in medieval Europe: the English evidence [PDF]

open access: yes, 2004
The catastrophic impact of fishing pressure on species such as cod and herring is well documented. However, the antiquity of their intensive exploitation has not been established. Systematic catch statistics are only available for ca.
Barrett, J H, Locker, A M, Roberts, C M
core   +2 more sources

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