Effects of Habitat-Specific Primary Production on Fish Size, Biomass, and Production in Northern Oligotrophic Lakes
Effects of Habitat-Specific Primary Production on Fish Size, Biomass, and Production in Northern Oligotrophic Lakes
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特定生境初级生产对北部寡营养湖泊鱼类大小、生物量和产量的影响
DOI：
10.1007/s10021-021-00733-6
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发表时间：
2022
期刊：
影响因子：
3.7
通讯作者：
P. Byström
中科院分区：
文献类型：
--
作者：
S. Norman;Karin A. Nilsson;M. Klaus;D. Seekell;J. Karlsson;P. Byström
生态学理论预测，初级生产力在不同生境中的相对分布影响鱼类的大小结构和生物量生产。在这项研究中，我们评估了个人，人口和社区水平的后果，褐鳟鱼（萨尔莫trutta）和北极红点鲑（Salvelinus alpinus）的变化估计栖息地的具体（底栖和浮游）和整个湖泊（GPPwhole）总初级生产力在27个北方寡营养湖泊。我们发现，底栖生物初级生产力的GPP整体的贡献较高，与较高的社区生物量和较大的最大和平均大小的鱼。在种群一级，物种特异性反应各不相同。增加底栖初级生产力（GPPBenthic）相关的褐鳟鱼，无论是单独或在同域的人口生物量较高，而北极焦积极响应远洋初级生产力（GPPBelagic）在同域人口。在同域湖泊中，这两个物种的最大尺寸是呈正相关的GPPBenthic和底栖生物的贡献GPPWhole。在异域湖泊中，褐鳟鱼的平均和最大尺寸和北极焦的平均尺寸呈正相关的GPPWhole底栖动物的比例。我们的研究结果强调了光控制的底栖生物初级生产的重要性，鱼类生物量生产在贫营养北方湖泊。我们的研究结果进一步表明，个体发育不对称和生态位转移的后果可能会导致整个栖息地的初级生产的分布比总的生态系统初级生产的鱼的大小，人口生物量和生产更重要。认识到光的可用性和有利于大型鱼类和鱼类生产的不对称资源生产之间的关系，可以允许成本效益和更明智的管理行动，在北方贫营养湖泊。
Ecological theory predicts that the relative distribution of primary production across habitats influence fish size structure and biomass production. In this study, we assessed individual, population, and community-level consequences for brown trout (Salmo trutta) and Arctic char (Salvelinus alpinus) of variation in estimated habitat specific (benthic and pelagic) and total whole lake (GPPwhole) gross primary production in 27 northern oligotrophic lakes. We found that higher contribution of benthic primary production to GPPwhole was associated with higher community biomass and larger maximum and mean sizes of fish. At the population level, species-specific responses differed. Increased benthic primary production (GPPBenthic) correlated to higher population biomass of brown trout regardless of being alone or in sympatry, while Arctic char responded positively to pelagic primary production (GPPPelagic) in sympatric populations. In sympatric lakes, the maximum size of both species was positively related to both GPPBenthic and the benthic contribution to GPPWhole. In allopatric lakes, brown trout mean and maximum size and Arctic char mean size were positively related to the benthic proportion of GPPWhole. Our results highlight the importance of light-controlled benthic primary production for fish biomass production in oligotrophic northern lakes. Our results further suggest that consequences of ontogenetic asymmetry and niche shifts may cause the distribution of primary production across habitats to be more important than the total ecosystem primary production for fish size, population biomass, and production. Awareness of the relationships between light availability and asymmetric resource production favoring large fish and fish production may allow for cost-efficient and more informed management actions in northern oligotrophic lakes.
附着藻类：淡水中倒营养金字塔的隐秘基础
DOI：
10.1146/annurev-ecolsys-121415-032340
发表时间：
2017
期刊：
and Systematics
影响因子：
--
作者：
Vadeboncoeur, Yvonne;Power, Mary E.
通讯作者：
Power, Mary E.