Quantifying the hidden biodiversity, conservation value and effectiveness of fine sediment detention ponds in agri-environment schemes

量化农业环境计划中细泥沙滞留池隐藏的生物多样性、保护价值和有效性

• 批准号: 2756170
• 金额: --
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2756170
• 关键词: Quantifying; hidden; biodiversity; conservation; value

Excessive fine sediment (typically particles <2mm) is one of the principal reasons for the failure of waterbodies to achieve good ecological status under the EU Water Framework Directive with widely acknowledged ecological effects for the entire trophic food web (Mathers et al., 2017). Although the input, transport, and storage of fine sediment is a natural component of river function, anthropogenic modifications have resulted in contemporary inputs far exceeding historic levels (Collins and Zhang, 2016). To combat this, a number of UK initiatives have been implemented to reduce fine sediment inputs to waterbodies including the English Catchment Sensitive Farming Delivery Initiative (£29M invested) and the 'Interreg project source to tap' in Northern Ireland (£4.9M). More recently, the Agricultural bill in 2020, will reward farmers and land managers in England for 'public goods' such as enhancing biodiversity, improving water quality or reducing flooding under the Environmental Land Management Scheme (ELM: Gov.UK, 2020). One means of tackling riverine fine sediment whilst also enhancing biodiversity is the installation of sediment traps and buffer ponds (e.g. see Catchment Based Approach, 2021).Despite their wide occurrence in agri-environment schemes, little is known about the contribution of sediment mitigation methods to landscape biodiversity or their efficacy for reducing fine sediment pollution for riverine health. Some research has suggested that small water bodies including artificial and unique lentic waterbodies (Biggs et al., 2017) may support high numbers of aquatic organisms in addition to those with high conservation value (Cerini et al., 2020). This project will work with leading stakeholders and project partners engaged in agricultural management and monitoring to provide essential information that will feed directly into policy and real-world environmental management. The project will seek to: i) quantify the current uptake and distribution of the various aquatic-based sediment mitigation methods; ii) quantify the biodiversity and conservation value of sediment retention ponds; and iii) assess the effectiveness of sediment retention methods in mitigating fine sediment pressures for riverine systems.

过度的细沉积物（通常<2mm <2mm）是水体在欧盟水框架指令下未能获得良好生态状况的主要原因之一，对整个营养食品网的生态效应得到了广泛认可（Mathers等，2017）。尽管精细沉积物的输入，运输和存储是河流功能的自然组成部分，但人为修改导致当代输入远远超过了历史水平（Collins和Zhang，2016年）。为了解决这个问题，已经实施了许多英国倡议，以减少包括英国集水集敏感的农业交付计划（2900万英镑投资）和北爱尔兰的“ InterReg Project项目来源”（490万英镑）。最近，该法案在2020年将奖励英格兰的农民和土地管理者的“公共物品”，例如增强生物多样性，改善水质或减少环境土地管理计划（ELM：Gov.uk，2020年）。解决河流精细沉积物的一种手段，同时增强生物多样性的是安装沉积物陷阱和缓冲熊（例如，请参见基于流域的方法，2021年）。尽管它们在农业环境方案中发生了广泛的发生，但对减少泥沙方法对景观生物多样性的贡献或减少河流健康污染的良好沉积物污染的效率知之甚少。一些研究表明，除了具有较高保护价值的人之外，包括人造和独特的水体在内的小水体（Biggs等，2017）可能还支持大量的水生生物（Cerini等，2020）。该项目将与领先的利益相关者和项目合作伙伴合作，从事农业管理和监测，以提供将直接融入政策和现实世界环境管理的基本信息。该项目将寻求：i）量化各种基于水生的沉积物方法的当前吸收和分布； ii）量化沉积物保留PON的生物多样性和保护价值； iii）评估沉积物保留方法在减轻河流系统的细沉积物压力方面的有效性。