Exploring the structural and functional properties of the Lake Victoria food web, and the role of fisheries, using a mass balance model

2016 ◽  
Vol 342 ◽  
pp. 161-174 ◽  
Author(s):  
Vianny Natugonza ◽  
Richard Ogutu-Ohwayo ◽  
Laban Musinguzi ◽  
Benedicto Kashindye ◽  
Steingrímur Jónsson ◽  
...  
Keyword(s):  
Food Web ◽  
Mass Balance ◽  
Functional Properties ◽  
Lake Victoria ◽  
Balance Model ◽  
Mass Balance Model ◽  
Structural And Functional Properties

Trophic mass-balance model of a subtropical coastal lagoon, including a comparison with a stable isotope analysis of the food-web

2010 ◽  
Vol 221 (24) ◽  
pp. 2859-2869 ◽  
Author(s):  
Andrés C. Milessi ◽  
Calliari Danilo ◽  
Rodríguez-Graña Laura ◽  
Conde Daniel ◽  
Sellanes Javier ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Mass Balance ◽  
Stable Isotope Analysis ◽  
Coastal Lagoon ◽  
Isotope Analysis ◽  
Balance Model ◽  
Mass Balance Model

Trophic studies in a high-latitude fjord ecosystem — a comparison of stable isotope analyses (δ13C and δ15N) and trophic-level estimates from a mass-balance model

2008 ◽  
Vol 65 (12) ◽  
pp. 2791-2806 ◽  
Author(s):  
Marianne Nilsen ◽  
Torstein Pedersen ◽  
Einar Magnus Nilssen ◽  
Stein Fredriksen
Keyword(s):  
Food Web ◽  
Mass Balance ◽  
High Latitude ◽  
Carbon Sources ◽  
Trophic Levels ◽  
Food Sources ◽  
Balance Model ◽  
Ecological Groups ◽  
Mass Balance Model ◽  
Δ13c And Δ15n

Stable isotopes of δ13C and δ15N were used to examine food sources and trophic structure of 65 taxa, representing 19 ecological groups, in a high-latitude ecosystem. Discrimination was made between pelagic and benthic carbon sources, where feeding in most cases reflected the habitat. Trophic levels from these analyses, TLN, were compared with corresponding levels estimated by an Ecopath mass-balance model, TLE, constructed independently of the isotope data. The good correlation between the two methods (r2 = 0.72) supports the diet composition and the grouping of taxa into ecological groups in the model. However, when estimates diverged, this was often explained by the analyses of few taxa, taxa that were not the most representative for the group, or the analyses of specimens from a limited size range. Some assumed detrivores were assigned high TLN in favour of an abundant microbial community in the sediments. High TLN estimates for many invertebrate taxa, combined with relatively low TLN for fishes, suggest that parts of the benthic food web are decoupled from the classical food web.

A mass-balance model to assess arsenic exposure from multiple wells in Bangladesh

2021 ◽  
Author(s):  
Linden B. Huhmann ◽  
Charles F. Harvey ◽  
Ana Navas-Acien ◽  
Joseph Graziano ◽  
Vesna Slavkovich ◽  
...  
Keyword(s):  
Mass Balance ◽  
Arsenic Exposure ◽  
Balance Model ◽  
Mass Balance Model

scholarly journals The role of Tb-doping on the structural and functional properties of Bi4−xTbxTi3O12 ferroelectric phases with the Aurivillius type structure

2016 ◽  
Vol 28 (6) ◽  
pp. 4914-4924 ◽  
Author(s):  
Tapati Sarkar ◽  
Sergey A. Ivanov ◽  
Elena A. Fortalnova ◽  
Ekaterina D. Politova ◽  
Marina G. Safronenko ◽  
...  
Keyword(s):  
Functional Properties ◽  
Type Structure ◽  
Structural And Functional Properties

Application of a snow cover energy and mass balance model in a balsam fir forest

1990 ◽  
Vol 26 (5) ◽  
pp. 1079-1092 ◽  
Author(s):  
Richard Barry ◽  
Marcel Prévost ◽  
Jean Stein ◽  
Andre P. Plamondon
Keyword(s):  
Mass Balance ◽  
Snow Cover ◽  
Balsam Fir ◽  
Balance Model ◽  
Mass Balance Model

scholarly journals Application of a mass-balance model to a Himalayan glacier

1999 ◽  
Vol 45 (151) ◽  
pp. 559-567 ◽  
Author(s):  
Rijan Bhakta Kayastha ◽  
Tetsuo Ohata ◽  
Yutaka Ageta
Keyword(s):  
Mass Balance ◽  
Surface Albedo ◽  
Balance Model ◽  
Mass Balance Model ◽  
Mass Balances ◽  
Climatic Parameters ◽  
Glacier Surface ◽  
Temperature And Precipitation ◽  
Ice Surface ◽  
Good Agreement

AbstractA mass-balance model based on the energy balance at the snow or ice surface is formulated, with particular attention paid to processes affecting absorption of radiation. The model is applied to a small glacier, Glacier AX010 in the Nepalese Himalaya, and tests of its mass-balance sensitivity to input and climatic parameters are carried out. Calculated and observed area-averaged mass balances of the glacier during summer 1978 (June-September) show good agreement, namely -0.44 and -0.46 m w.e., respectively.Results show the mass balance is strongly sensitive to snow or ice albedo, to the effects of screening by surrounding mountain walls, to areal variations in multiple reflection between clouds and the glacier surface, and to thin snow covers which alter the surface albedo. In tests of the sensitivity of the mass balance to seasonal values of climatic parameters, the mass balance is found to be strongly sensitive to summer air temperature and precipitation but only weakly sensitive to relative humidity.

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