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.

人类日益增加的压力正在加速世界各地的环境变化，威胁到人类的水安全和水生生物多样性。一个例子是水生生态系统的广泛营养污染，这可能导致生物多样性丧失、生态系统进程和功能属性的变化，如次级生产和水质下降。在温带地区，我们的淡水系统的功能属性的理解，他们提供的生态服务，以及他们对养分富集的反应是相对先进的，但在热带/亚热带系统的数据，因此了解，是有限的。我们不知道这两个地区的水生群落反应和潜在的生物过程是否相似或不同。这些都是核心问题，因为了解环境过程如何控制资源可用性（在这种情况下是清洁水）对于负责任地使用该资源至关重要。我们将启动罗汉普顿大学（RU）和卡塔里纳（UFSC）的联邦大学之间的长期合作伙伴关系，以比较温带和亚热带地区的淡水系统在营养浓度梯度，群落结构（蓝藻的存在）和时间。我们将确定在这两个不同的地区的水生生物群落对富营养化的反应的相似性和差异，并评估由此产生的对水质的影响。最初，我们将共同探讨一个详细的8年数据集（2007-2014年）的佩里盆地（圣卡塔里纳岛，巴西南部）由Petrucio举行，并将其与罗伯逊和赖斯举行的温带淡水系统的数据集进行比较。Peri盆地是一个保护区，用于Florianopolis大城市的重要部分的饮用水供应。随着广泛分布的有毒蓝藻的优势和生物量的增加，它开始显示出富营养化和水质退化的信号。我们的合作伙伴关系将通过测量包括Peri盆地内淡水社区在内的生物群体的个体体型来进一步开发这些数据。身体大小是许多生态群落结构的一个重要决定因素，是生态研究中的一种新的“共同货币”，可以比较群落结构和对系统内和系统间干扰的反应。然后，这些数据将用于确定更高级别的社区参数，如身体大小谱，次级生产和食物网属性的佩里盆地，并确定这些如何随着时间的推移而变化，不断变化的营养浓度，以及这可能会如何影响水质。合作者还将通过非正式讨论和研讨会，以及计划在巴西举办的研讨会和实地考察，RU会议和对英国淡水研究中心的访问，以及出席英国生态学会年会并发表演讲，交流和发展联合研究想法。

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