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Recovery is RELATED: Restoring Ecosystems by Linking Aquatic and Terrestrial Ecological Dynamics

恢复是相关的：通过连接水生和陆地生态动力学来恢复生态系统

基本信息

批准号：
NE/L006561/1
负责人：
Andrew Tanentzap
金额：
$ 50.72万
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2014
资助国家：
英国
起止时间：
2014 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FL006561%2F1
关键词：
Recovery RELATED Restoring Ecosystems Linking

项目摘要

Boreal regions hold upwards of 60% of the planet's freshwater, an essential ingredient for all life. But human activities, such as climate and land use change, are dramatically altering these landscapes and threatening the delivery of key services provided by aquatic ecosystems, such as clean drinking water and healthy fish populations. Contemporary paradigms of aquatic conservation have emphasized inputs of pollutants and water resource development as causes of declining water security and biodiversity, but restoration attempts are failing when these two factors alone are improved. Increasingly, local watersheds are seen as critical controls of aquatic ecosystems. This is spurred by the recent discovery that pathways of energy mobilization upwards through aquatic food webs - from microbes to fish - rely on organic matter originating from terrestrial vegetation, proving the adage that "clean water is a forest product".Any factor that changes the quality and quantity of organic matter input into freshwater from their surrounding catchments will clearly influence the delivery of aquatic ecosystem services. Fire, forest pests, and resource development, such as mining and logging, are emerging disturbances that are transforming boreal regions, but little is known as to how they will change long-term cycling of nutrients from terrestrial vegetation into aquatic ecosystems. A new watershed-level science that integrates the management of forestry and water resources is clearly needed to inform decision makers of the actions needed to conserve freshwater supplies by linking actions on land to processes in water.Our research will test whether the productivity of aquatic food webs increases with the quantity and quality of terrestrial organic matter under different climate scenarios. We will also answer whether disturbances on land that remove plant biomass and change the quality of plant litter will dampen the productivity of freshwater plants and animals. Our approach will be to create 96 artificial ecosystems in a common lake environment and expose sites to different quantities and qualities of organic matter. We will measure the responses of microbial, algal, and grazer communities using cutting-edge technologies such as next-generation DNA sequencing. We will also plant tagged individuals of a sedentary mussel species closely-related to economically important taxa within each site and monitor their long-term growth and survival. The ultimate goal of this work is to develop a spatially-explicit, dynamical watershed-level simulation model. We want to answer the question if X% of habitat is consumed by fire or insect outbreaks, then food stocks for fish will change by Y%.Outcomes of this research will be highly relevant to the UK and international policy around managing freshwater supplies by demonstrating strong linkages between terrestrial and aquatic ecosystems. For example, the EU has developed legislation to protect freshwater but this ignores the effects of land use practices on lake water quality and biota. The future of extensive forestry plantations and pastures surrounding many socio-economically important watersheds in Britain are also being debated as the EU begins reforming the Common Agricultural Policy. We aim to show that any changes in land use must consider how energy in the form of organic matter is dispersed to aquatic ecosystems and supports their productivity. Finally, this project will have many applications for improving regional land use planning and management, as well as restoring environmentally damaged landscapes. We will work closely with partners in the mining industry and government to inform them of the best practices for re-vegetating degraded watersheds.

北方地区拥有地球上60%以上的淡水，这是所有生命的基本成分。但是，气候和土地利用变化等人类活动正在戏剧性地改变这些景观，并威胁到提供清洁饮用水和健康鱼类种群等水生生态系统提供的关键服务。当代的水产养护模式强调污染物的输入和水资源开发是水安全和生物多样性下降的原因，但如果仅有这两个因素得到改善，恢复努力就会失败。当地的流域越来越多地被视为水生生态系统的关键控制因素。这是因为最近发现，通过水生食物网向上动员能量的途径--从微生物到鱼类--依赖于来自陆地植被的有机质，这证明了一句谚语：“清洁的水是森林产品”。任何改变从周围集水区输入淡水的有机质质量和数量的因素都将明显影响水生生态系统服务的提供。火灾、森林害虫和资源开发，如采矿和伐木，都是正在改变北方地区的新出现的干扰，但关于它们将如何改变从陆地植被到水生生态系统的养分的长期循环，人们知之甚少。显然需要一种新的分水岭级别的科学，整合林业和水资源的管理，通过将陆地上的行动与水中的过程联系起来，向决策者提供保护淡水供应所需的行动。我们的研究将测试在不同气候情景下，水生食物网的生产力是否随着陆地有机质的数量和质量而增加。我们还将回答陆地上的干扰是否会削弱淡水动植物的生产力，这些干扰会移除植物生物量并改变植物凋落物的质量。我们的方法将是在一个共同的湖泊环境中创建96个人工生态系统，并将地点暴露在不同数量和质量的有机物质中。我们将使用尖端技术，如下一代DNA测序，测量微生物、藻类和食草动物群落的反应。我们还将在每个地点种植与经济上重要的分类群密切相关的久居贻贝物种的标记个体，并监测它们的长期生长和存活。这项工作的最终目标是开发一个空间上明确的、动态的流域级模拟模型。我们想要回答的问题是，如果X%的栖息地被火灾或昆虫爆发所吞噬，那么鱼类的食物储备将发生Y%的变化。这项研究的结果将通过展示陆地和水生生态系统之间的紧密联系，与英国和国际上关于淡水供应的管理政策高度相关。例如，欧盟制定了保护淡水的立法，但这忽略了土地使用做法对湖泊水质和生物群的影响。随着欧盟开始改革共同农业政策，围绕英国许多社会经济重要分水岭周围的大片森林种植园和牧场的未来也在辩论中。我们的目标是表明，土地利用的任何变化都必须考虑有机物质形式的能量是如何分散到水生生态系统并支持其生产力的。最后，该项目将在改善区域土地利用规划和管理以及恢复破坏环境的景观方面有许多应用。我们将与采矿业和政府合作伙伴密切合作，告知他们恢复退化流域植被的最佳做法。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Viruses direct carbon cycling in lake sediments under global change.

DOI：
10.1073/pnas.2202261119
发表时间：
2022-10-11
期刊：
Proceedings of the National Academy of Sciences of the United States of America
影响因子：
11.1
作者：
通讯作者：

Feasting on terrestrial organic matter: Dining in a dark lake changes microbial decomposition.

在陆地有机物上盛宴：黑暗湖中的用餐会改变微生物分解。

DOI：
10.1111/gcb.14391
发表时间：
2018-11
期刊：
Global change biology
影响因子：
11.6
作者：
Fitch A;Orland C;Willer D;Emilson EJS;Tanentzap AJ
通讯作者：
Tanentzap AJ

Climate-driven shifts in sediment chemistry enhance methane production in northern lakes

气候驱动的沉积物化学变化提高了北部湖泊的甲烷产量

DOI：
10.1101/161653
发表时间：
2017
期刊：
影响因子：
0
作者：
Emilson E
通讯作者：
Emilson E

Assembly and functioning of microbial communities along terrestrial resource gradients in boreal lake sediments

北方湖泊沉积物中沿陆地资源梯度微生物群落的组装和功能

DOI：
发表时间：
2018
期刊：
影响因子：
0
作者：
Orland
通讯作者：
Orland

Climate-driven shifts in sediment chemistry enhance methane production in northern lakes.

DOI：
10.1038/s41467-018-04236-2
发表时间：
2018-05-04
期刊：
Nature communications
影响因子：
16.6
作者：
Emilson EJS;Carson MA;Yakimovich KM;Osterholz H;Dittmar T;Gunn JM;Mykytczuk NCS;Basiliko N;Tanentzap AJ
通讯作者：
Tanentzap AJ