Variation in the field metabolic rate of wild living plaice )Pleuronectes platessa) from the North Sea constraining inluences of body size......

个体生物的生理反应推动了海洋温度变暖引发的生态系统变化。尽管在预测人口对气候变化的反应方面至关重要，但个人能够通过改变行为和代谢反应来缓解温度影响的程度尚不清楚。代谢范围是生物体的标准代谢率和最大代谢率之间的差值。对于给定的中值水温，可以通过寻找冷水、减少觅食或减少生长来降低总(田间)代谢率(FMR)，从而在行为上增加代谢范围。由于基础代谢率的差异，人群内的代谢范围也可能不同。对于预测物种对气候变化的反应，种群维持不同代谢范围的能力的程度是一个未知但关键的概念。在自然生境中测量海洋鱼类的FMR是一项重大的科学挑战，目前限制了对鱼类对气候变化的生理反应的预测。利用一种新的基于耳石稳定碳同位素组成的FMR生物地球化学替代物，我们将使用Cefas耳石档案来探索个体鱼对十年温度变化的代谢反应。首先，我们将重点放在鳕鱼上，我们将首次描述不同物种温度范围内FMR可塑性的空间和时间差异。

The physiological responses of individual organisms drive ecosystem change prompted bywarming sea temperatures. Although critical in predicting population responses to climate change,the extent to which individuals are able to mitigate temperature effects by modifying behaviourand metabolic response is unknown. Metabolic scope is the difference between an organism'sstandard and maximum metabolic rate. For a given median water temperature, metabolic scopemay be increased behaviourally by reducing total (field) metabolic rate (FMR) by seeking colderwater, by foraging less or by reducing growth. Intra-population metabolic scope may also vary dueto differences in basal metabolic rate. The extent to which populations maintain the capacity tovary metabolic scope is an unknown but critical concept for predicting species' responses toclimate change. Measuring marine fishes' FMR in natural habitats is a major scientific challengecurrently limiting predictions of fish physiological responses to climate change. Using a newbiogeochemical proxy for FMR based on otolith stable carbon isotope composition, we will explorethe metabolic response of individual fish to decadal temperature change using the Cefas otolitharchive. Focusing initially on plaice, we will for the first time describe spatial and temporaldifferences in FMR plasticity across a species thermal range.