Predicting riverine fish production using empirical models and the metabolic theory of ecology

IF 1.6 3区 农林科学 Q3 FISHERIES
Ian A. Richter, Nicholas E. Jones, Donald A. Jackson
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引用次数: 0

Abstract

Fish production integrates many different measures of community performance, such as abundance, biomass, growth, and reproduction, into one valuable quantitative metric but requires resource intensive data for empirical estimation. While published empirical models and the metabolic theory of ecology (MTE) represent alternative methods to estimate fish production, few studies have focused on productivity models for stream fish assemblages. The goal of our study was to determine whether existing empirical models and elements of the metabolic theory of ecology can reliably estimate stream fish productivity. We used production estimates from the literature (n = 107) to parameterize models based on the metabolic theory of ecology and new estimates of stream fish production from North America (n = 78) to compare and validate all models. Using major axis regression, we determined that while all models had strongly correlated production estimates relative to the observed values (r2 range: [0.496, 0.815]), not all the models produced accurate estimates. The MTE model with the temperature component had a poorer predictive performance (RMSE = 0.502) relative to models based solely on allometric scaling (RMSE range: [0.299, 0.380]). We conclude that standard production models can generate relative estimates of production using general fish sample data, however, the accuracy and precision of the estimates can vary among the models. Our study highlights the need for productivity estimates for stream fish assemblages from different geographic regions, to test empirical models with novel datasets, and for further investigation of temperature effects on fish productivity.

Abstract Image

利用经验模型和生态学代谢理论预测河流鱼类产量
鱼类生产将许多不同的群落绩效指标,如丰度、生物量、生长和繁殖,整合为一个有价值的定量指标,但需要资源密集型数据进行经验估计。虽然已发表的经验模型和生态学代谢理论(MTE)代表了估算鱼类产量的替代方法,但很少有研究关注溪流鱼类群落的生产力模型。我们的研究目的是确定现有的经验模型和生态学代谢理论的要素是否可以可靠地估计溪流鱼类的生产力。我们使用文献中的产量估计(n = 107)来参数化基于生态学代谢理论的模型,并使用北美流鱼产量的新估计(n = 78)来比较和验证所有模型。使用主轴回归,我们确定虽然所有模型都与观测值有很强的相关性生产估计(r2范围:[0.496,0.815]),但并非所有模型都产生准确的估计。与仅基于异速缩放的模型(RMSE范围:[0.299,0.380])相比,包含温度分量的MTE模型的预测性能较差(RMSE = 0.502)。我们得出的结论是,标准生产模型可以使用一般鱼类样本数据产生产量的相对估计值,然而,估计值的准确性和精度可能因模型而异。我们的研究强调了对来自不同地理区域的溪流鱼类种群进行生产力估算的必要性,以及用新数据集测试经验模型的必要性,以及进一步研究温度对鱼类生产力的影响的必要性。
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来源期刊
Ecology of Freshwater Fish
Ecology of Freshwater Fish 农林科学-海洋与淡水生物学
CiteScore
4.10
自引率
0.00%
发文量
45
审稿时长
12-24 weeks
期刊介绍: Ecology of Freshwater Fish publishes original contributions on all aspects of fish ecology in freshwater environments, including lakes, reservoirs, rivers, and streams. Manuscripts involving ecologically-oriented studies of behavior, conservation, development, genetics, life history, physiology, and host-parasite interactions are welcomed. Studies involving population ecology and community ecology are also of interest, as are evolutionary approaches including studies of population biology, evolutionary ecology, behavioral ecology, and historical ecology. Papers addressing the life stages of anadromous and catadromous species in estuaries and inshore coastal zones are considered if they contribute to the general understanding of freshwater fish ecology. Theoretical and modeling studies are suitable if they generate testable hypotheses, as are those with implications for fisheries. Manuscripts presenting analyses of published data are considered if they produce novel conclusions or syntheses. The journal publishes articles, fresh perspectives, and reviews and, occasionally, the proceedings of conferences and symposia.
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