Effects of agri-environmental measures in intensively managed farmland on the soil seed bank, butterflies and carabid beetles in Germany - Influence of local conditions and surrounding landscape on biodiversity

by Liesa Schnee
Doctoral thesis
Date of Examination:2022-10-14
Date of issue:2023-09-26
Advisor:Dr. Laura Sutcliffe
Referee:Prof. Dr. Christoph Leuschner
Referee:PD Dr. Mark Maraun
Persistent Address: http://dx.doi.org/10.53846/goediss-10107

 

 

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Abstract

English

Monitoring of the soil seed bank, butterflies, and carabid beetles, representing different trophic groups, provides an insight into the broader effects of agri-environmental measures in intensively used arable landscapes. Many arable weeds (primary producers) depend on their soil seed bank for survival. Soil samples were analysed by the seedling emergence method. After artificial stratification, sieving and germination, seedlings were identified and counted. Butterflies (popular indictor group) were monitored, using the transect walk method. Activity abundance of carabid beetles (important for ecological pest control) was estimated by pit fall traps. In general, intensively farmed landscapes are characterized by a limited species pool. Measures promote some common generalist plant and butterfly species. On-site conditions, such tillage, vegetation structure and flowering aspect, as well as the surrounding landscape effected, soil seed bank, butterfly, and carabid beetle diversity.
Keywords: agrobiodiversity; agri-environmental measures; seedling emergence method; soil seed bank; butterfly monitoring; carabid beetles; pit fall traps
 
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