We studied the effects of vegetation species richness, diversity, and structure on grassland arthropod communities of 23 sites in northeastern South Dakota and southeastern North Dakota. Sites were selected to represent a vegetation species diversity gradient, and three vegetation cover types, including native unseeded grassland, low-diversity seeding known as dense nesting cover (DNC) for waterfowl, and high-diversity seed mix. During July of 2016, pan traps and sweep nets were used to survey the grassland arthropod community. A total of 25,521 arthropods representing 107 taxonomic families were collected. Richness, diversity, and biomass of arthropods did not differ among cover types. Vegetation richness and diversity, cover type, percent live vegetation and native cover, and litter depth were important predictors of arthropod community measures, and multivariate analysis of the arthropod community indicated significant differences between native and DNC study sites; explained by differences in vegetation richness, percent forb cover, and litter depth. Results of our study suggest that species richness of grassland restoration seeding mixes likely impacts arthropod richness and diversity, and DNC does not produce arthropod communities similar to native prairie. Additionally, because vegetation structural variables were important determinants of arthropod community measures, grassland management practices will influence the resulting arthropod community and influence the success of grassland restoration using high-diversity seed mixes. Results of our study promote the potential for successful restoration outcomes using high-diversity seed mixes, and indicate that low-diversity, non-native seed mixes, such as DNC, do not fully restore native grassland arthropod communities.

中文翻译：

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植被丰富度、多样性和结构影响北部混合草原原生和恢复的节肢动物群落

我们研究了植被物种丰富度、多样性和结构对南达科他州东北部和北达科他州东南部 23 个地点的草地节肢动物群落的影响。选择的地点代表植被物种多样性梯度和三种植被覆盖类型，包括原生未播种的草地、称为密集筑巢覆盖 (DNC) 的水禽的低多样性播种和高多样性种子混合。2016 年 7 月，利用捕集器和扫网对草原节肢动物群落进行调查。共收集了代表 107 个分类科的 25,521 只节肢动物。节肢动物的丰富度、多样性和生物量在不同覆盖类型之间没有差异。植被丰富度和多样性、覆盖类型、活植被和原生覆盖百分比以及凋落物深度是节肢动物群落测量的重要预测因子，节肢动物群落的多变量分析表明本地和 DNC 研究地点之间存在显着差异；由植被丰富度、杂草覆盖率和凋落物深度的差异来解释。我们的研究结果表明，草地恢复播种混合的物种丰富度可能会影响节肢动物的丰富度和多样性，而 DNC 不会产生类似于原生草原的节肢动物群落。此外，由于植被结构变量是节肢动物群落措施的重要决定因素，草原管理实践将影响由此产生的节肢动物群落，并影响使用高多样性种子混合物恢复草原的成功。我们的研究结果促进了使用高多样性种子混合物成功恢复结果的潜力，并表明低多样性、