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Climate change impacts on ocean biogeochemistry are expected to alter calcium carbonate formation by organisms, necessitating accurate predictive models based on physiological mechanisms. The dynamic energy budget (DEB) theory offer a mechanistic and integrative framework to model organism metabolism under environmental stressors. In this work, we 1) review the physiological and energetic mechanisms of biogenic calcification, 2) propose a generalized approach for inclusion in DEB modelling based on stylized facts, and 3) formulate the effects of saturation state changes on the bioenergetics of calcification. While applicable to any species performing biogenic calcification (microalgae, shellfish, fish, corals),...
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The USDA Livestock Forage Disaster Program (LFP) offers financial assistance to farmers and ranchers with grazed forage losses caused by fire or drought. Payments for drought losses are based on the U.S. Drought Monitor (USDM), which is designed to integrate meteorological, agricultural, hydrological, ecological, and socioeconomic droughts. Because soil moisture deficit is a more specific measure of agricultural drought, we hypothesized that basing LFP payments on soil moisture observations could better reduce producers’ risk. Therefore, our objectives were to 1) quantify relationships of forage yield with USDM-based LFP payment multipliers and with in situ soil moisture, 2) develop an alternative LFP payment multiplier...
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