Traditional grazing management creates heterogeneous swards and fosters grasshopper densities
作者机构：Department of Biodiversity and Landscape EcologyFaculty of Biology and ChemistryOsnabruck UniversityOsnabruckGermany
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2022年第29卷第6期
页 面：1805-1818页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 09[农学]
基 金：Dieter Frisch
主 题：biodiversity conservation common pasture habitat heterogeneity insect abundance land-usechange mire ecosystem
摘 要：Common pastures were once the dominant type of land use in many Euro-pean ***,during the past 150 years,they have declined *** studies have shown that they are hotspots for rare plant,butterfly,and bird species in the study area,the Bavarian pre-Alps(southern Germany).However,studies on the value of these pastures for Orthoptera(hereinafter termedgrasshoppers)have been ***,we studied the effects of traditional summer grazing in common pastures on grasshopper *** study revealed that grasshopper species richness did not differ between common pastures(n=57)and controls(n=57).By contrast,density of all and of threat-ened species varied between common pastures and controls in all plots and within the two vegetation types with the highest grasshopper abundance,grasslands on mineral soil and *** threatened species,Pseudochorthippus montanus and Stethophyma grossum,were identified as indicators for common pastures;controls had no indicative *** low-intensity grazing in common pastures has resulted in open and heteroge-neous swards with some bare ground,a low cover of litter and an intermediate vegetation height favouring high densities of grasshopper species in general and threatened species in *** is especially true for the two most productive vegetation types,grasslands on mineral soil and *** promote biodiversity in general and grasshopper densities in particular,we recommend maintaining traditional cattle grazing(stocking capacities:0.5-2.0 livestock units/ha)in common *** possible,this grazing regime should also be introduced in the surrounding landscape.
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