Erratum: Estimating food consumption rates of fish using a mercury mass balance model

2000 ◽  
Vol 57 (4) ◽  
pp. 871 ◽  
Author(s):  
Marc Trudel ◽  
Alain Tremblay ◽  
Roger Schetagne ◽  
Joseph B Rasmussen
Keyword(s):  
Mass Balance ◽  
Food Consumption ◽  
Balance Model ◽  
Mass Balance Model ◽  
Consumption Rates

Estimating food consumption rates of fish using a mercury mass balance model

2000 ◽  
Vol 57 (2) ◽  
pp. 414-428 ◽  
Author(s):  
Marc Trudel ◽  
Alain Tremblay ◽  
Roger Schetagne ◽  
Joseph B Rasmussen
Keyword(s):  
Mass Balance ◽  
Food Consumption ◽  
Egg Production ◽  
Energy Requirement ◽  
Balance Model ◽  
Mass Balance Model ◽  
Simple Method ◽  
Consumption Rates ◽  
Using Data

We present a simple method for estimating food consumption rates of fish in the field based on a mercury (Hg) mass balance model. This method requires the determination of fish age, size, and growth and Hg concentration in fish and their food. The model was validated using data obtained from a previously published laboratory experiment. A field test of the model showed that food consumption rates determined with the Hg mass balance model differed from independent estimates obtained with the 137Cs method by only 0.6-16.1%. The model was applied to fish from various lakes in Quebec and Ontario. Food consumption rates estimated with the Hg mass balance model varied significantly both among species and among populations. Furthermore, female fish tended to eat 30-40% more food than males, probably to meet the larger energy requirement associated with egg production. A sensitivity analysis indicated that the Hg mass balance model was mostly responsive to variables that can be easily measured in the field, such as fish size and Hg concentration in fish and their food. By providing a low-effort approach to quantifying food consumption rates of fish in the field, this method may help to refine our understanding of the environmental factors that influence the quantity of food consumed by fish.

Bioenergetics and mercury dynamics in fish: a modelling perspective

2006 ◽  
Vol 63 (8) ◽  
pp. 1890-1902 ◽  
Author(s):  
Marc Trudel ◽  
Joseph B Rasmussen
Keyword(s):  
Mass Balance ◽  
Mercury Concentration ◽  
Lake Trout ◽  
Balance Model ◽  
Mass Balance Model ◽  
Fish Size ◽  
Mercury In Fish ◽  
Consumption Rates ◽  
The Relationship ◽  
Activity Costs

The concentration of mercury in fish generally increases with age and size. Although a number of hypotheses have been invoked to explain this pattern, our understanding of the processes regulating the accumulation of mercury in fish is currently inadequate. In this study, we used a simple mass balance model to explore how the relationship between mercury concentration and fish age is affected by bioenergetics processes and prey contamination. We show that mercury concentration increases with fish age when older fish consume more contaminated prey or when metabolic costs associated with activity also increase with fish size. Our analyses further indicate that the relative importance of growth rate, activity costs, and consumption rates for mercury concentration can vary widely. We also show that changes in the energy density of fish and their prey with fish size could also affect the relationship between mercury concentration in fish and age. Application of this mass balance model indicates that bioenergetics models underestimate the activity costs of lake trout. A simple approach is presented to estimate activity costs of fish under field conditions.

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

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.

scholarly journals Development of a Water and Enthalpy Budget-based Glacier mass balance Model (WEB-GM) and its preliminary validation

2017 ◽  
Vol 53 (4) ◽  
pp. 3146-3178 ◽  
Author(s):  
Baohong Ding ◽  
Kun Yang ◽  
Wei Yang ◽  
Xiaobo He ◽  
Yingying Chen ◽  
...  
Keyword(s):  
Mass Balance ◽  
Balance Model ◽  
Glacier Mass Balance ◽  
Mass Balance Model ◽  
Preliminary Validation
Sign in / Sign up

Export Citation Format

Share Document