Comparing community size patterns and food web structure in eutrophic temperate and sub-tropical freshwater systems.

比较富营养化温带和亚热带淡水系统的群落规模模式和食物网结构。

• 批准号: NE/M022048/1
• 负责人: Anne Robertson
• 金额: $ 4.86万
• 依托单位: University of Roehampton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FM022048%2F1
• 关键词: Comparing; community; size; patterns; food

Increasing human pressure is accelerating environmental change throughout the world, threatening water security for humans and aquatic biodiversity. One example is the widespread nutrient pollution of aquatic ecosystems which may result in biodiversity loss, changes in ecosystem processes and functional attributes such as secondary production and declining water quality. In temperate zones our understanding of the functional attributes of freshwater systems, the ecological services that they provide, and their response to nutrient enrichment is relatively advanced but in tropical/ sub-tropical systems data, and therefore understanding, are limited. We do not know whether the aquatic community responses, and the underlying biological processes, of both areas will be similar or different. These are central questions because understanding how environmental processes control resource availability (in this case clean water) is critical for the responsible use of that resource. We will initiate a long term partnership between Roehampton University (RU) and Federal University of Santa Catarina (UFSC) to compare freshwater systems in temperate and sub-tropical areas across a gradient of nutrient concentrations, community structure (presence of cyanobacteria) and over time. We will identify similarities and differences in aquatic community response to eutrophication in these two distinct regions and evaluate the resultant impact on water quality. Initially we will jointly explore a detailed 8 year data set (2007-2014) for the Peri basin (Santa Catarina Island, southern Brazil) held by Petrucio and compare it with datasets for temperate freshwater systems held by Robertson and Reiss. The Peri basin is a protected area and is used for drinking water supply for a significant part of the conurbation of Florianopolis. It is beginning to show signals of eutrophication and water quality degradation with an increasing dominance and biomass of a widespread toxic cyanobacterium. Our partnership will further develop this data by measuring individual body sizes for organismal groups comprising the freshwater communities within the Peri basin across space and time. Body size is a crucial determinant of the structure of many ecological communities and is a new 'common currency' in ecological research enabling comparison of community structure and responses to disturbance within and between systems. This data will then be used to determine higher level community parameters such as body size spectra, secondary production and food web properties for the Peri basin and determine how these vary through time with changing nutrient concentrations and how this may effect water quality. The collaborators will additionally exchange and develop joint research ideas through informal discussions and seminars but also through the planned workshops and field trips in Brazil, RU conference and visits to freshwater research centres in the UK and by attendance and presentations at the British Ecological Society annual meeting.

人类压力的增加正在加速世界各地的环境变化，威胁着人类和水生生物多样性的水安全。一个例子是水生生态系统的广泛养分污染，这可能导致生物多样性丧失，生态系统过程的变化以及诸如二级生产和水质下降之类的功能属性。在温带地区，我们对淡水系统功能属性的理解，它们提供的生态服务以及它们对养分富集的反应相对先进，但在热带/亚热带系统数据中，因此理解是有限的。我们不知道这两个领域的水生社区反应以及基本的生物过程是相似的还是不同的。这些是核心问题，因为了解环境过程如何控制资源可用性（在这种情况下，清洁水）对于负责使用该资源至关重要。我们将在Roehampton University（RU）与圣卡塔琳娜联邦大学（UFSC）之间建立长期合作伙伴关系，以比较跨营养浓度，社区结构（存在蓝细菌）和随着时间的时间和时间层面的温带和亚热带地区的淡水系统。我们将在这两个不同的区域中确定水生社区对富营养化的反应的相似性和差异，并评估结果对水质的影响。最初，我们将共同探索由Petrucio持有的盆地（2007- 2014年）（2007-2014）的详细数据集（2007- 2014年），由Petrucio持有，并将其与Robertson和Reiss持有的温带淡水系统进行比较。盆地是一个受保护区，用于饮用水供应，用于弗洛里亚诺族植物的大部分。它开始显示富营养化和水质降解的信号，并具有越来越多的占优势和广泛有毒蓝细菌的生物量。我们的合作伙伴关系将通过测量在跨时代和时间盆地内的淡水群落组成的有机体的个体体大小来进一步开发这些数据。身体大小是许多生态社区结构的关键决定因素，并且是生态研究中的一种新的“共同货币”，可以比较社区结构和系统内部和系统之间的干扰响应。然后，这些数据将用于确定较高水平的社区参数，例如体积光谱，二次生产和盆地的食品网络特性，并确定这些数据随着时间的变化而随着时间的变化而随着时间的变化而变化，以及这可能如何影响水质。合作者将通过非正式的讨论和研讨会以及在巴西的计划讲习班和实地考察，RU会议以及参观英国的淡水研究中心以及英国生态学会年度会议上的出席和演讲来交换和发展联合研究思想。

项目成果

Winter is coming: Food web structure and seasonality in a subtropical freshwater coastal lake.

• DOI: 10.1002/ece3.3031
• 发表时间: 2017-07
• 期刊: Ecology and evolution
• 影响因子: 2.6
• 作者: Peralta-Maraver I;Robertson AL;Rezende EL;Lemes da Silva AL;Tonetta D;Lopes M;Schmitt R;Leite NK;Nuñer A;Petrucio MM
• 通讯作者: Petrucio MM