The importance of maize fields as a summer and autumn habitat for birds – a spatial and resource utilization analysis with respect to the landscape configuration.

玉米田作为夏季和秋季鸟类栖息地的重要性——景观配置的空间和资源利用分析。

• 批准号: 467966074
• 负责人: Professor Dr. Thomas Gottschalk
• 金额: --
• 依托单位: Hochschule für Forstwirtschaft Rottenburg
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/467966074?language=en
• 关键词: importance; maize; fields; summer; autumn

The aim of this project is to provide significant data on the importance of maize as a habitat for birds in summer and autumn. Additionally, for the first time the project will analyse the effect of the landscape (especially the percentage covered with maize and of wooded areas) surrounding the maize fields on bird abundance in maize. The innovative approach of the project will be based on a network of volunteers and project staff members, which will record bird data in maize fields on a national scale and by using an automatic radio‐tracking system.Providing food and biomass for energy production for an expanding population, while at the same time maintaining biodiversity, is a global challenge for agriculture. In Germany, policies to accelerate the uptake of renewable energy technologies have supported the cultivation of maize for biogas production. This has led to the fact that 7.6% of the total German land is cultivated with maize. Most studies show that maize fields are of minor importance for biodiversity. However, the results of the few studies investigating the use of maize as a habitat by birds suggest that maize fields might be an important habitat and food resource for birds during summer and autumn. Still, no general conclusion can be drawn, as those studies are based on a low number of sample sites. Furthermore, the influence of the surrounding landscape on the occurrence of bird species in maize and the interactions between maize fields and other habitats have not been taken into consideration. Therefore, in the project the number of bird species and individuals resting and the time birds spend in the maize field will be recorded by a constant effort mist-netting approach between August and October. Changes of the birds’ weight and physical condition will be determined by using the capture-recapture method. In addition, food resource availability for birds in maize fields will be sampled by determining the arthropod biomass.Such information is essential to draw conclusions on the attraction and importance of maize fields as a habitat and stopover site for birds. To obtain data on the exact daily home ranges of birds in the maize fields, as well as on the potential interactions between maize fields and surrounding habitats, a spatial analysis of selected birds’ activity using an automatic radio-telemetry system will be conducted. This analysis will provide detailed information on the temporal and spatial utilization patterns of maize fields by birds. Due to the large global increase of maize cultivation, the results of the project are of high relevance for environmental and socio-economic policies. Results can be used to determine the importance of maize fields as a habitat for birds and hence a major component of biodiversity. Through this research, maize cover thresholds in terms of increasing biodiversity and bird abundance can be quantitatively defined.

该项目的目的是提供有关玉米作为夏季和秋季鸟类栖息地的重要性的重要数据，此外，该项目将首次分析景观的影响（特别是玉米和树木覆盖的百分比）。该项目的创新方法将基于志愿者和项目工作人员网络，该网络将使用自动无线电记录全国范围内玉米田中的鸟类数据。跟踪系统。提供食物在德国，加速采用可再生能源技术的政策实际上支持了用于沼气生产的玉米种植。德国 7.6% 的土地用于种植玉米。大多数研究表明，玉米田对生物多样性非常重要。然而，少数研究调查玉米作为鸟类栖息地的情况表明，玉米田可能是一种重要的作物。重要的然而，由于这些研究基于的样本点数量较少，因此无法得出普遍的结论。此外，周围景观对玉米和鸟类物种发生的影响。未考虑玉米田和其他栖息地之间的相互作用，因此，在该项目中，鸟类在玉米田中休息的种类和个体的数量以及鸟类在玉米田中度过的时间将在八月之间通过持续的雾网方法记录。和十月份鸟类体重的变化。此外，将通过确定节肢动物生物量来对玉米田中鸟类的食物资源可用性进行采样。此类信息对于得出玉米田作为农业的吸引力和重要性的结论至关重要。鸟类的栖息地和中途停留地 为了了解玉米田中鸟类的确切日常活动范围以及玉米田与周围栖息地之间的潜在相互作用，使用自动分析仪对选定的鸟类活动进行了空间分析。将进行无线电遥测系统，该分析将提供有关鸟类对玉米田的时间和空间利用模式的详细信息，由于全球玉米种植面积大幅增加，该项目的结果与环境和社会具有高度相关性。 -经济政策。结果可用于确定玉米田作为鸟类栖息地的重要性，因此是生物多样性的主要组成部分，通过这项研究，可以定量确定玉米覆盖率在增加生物多样性和鸟类丰度方面的阈值。