Effects of Crop Rotation Diversification and Livestock Integration on Above-Ground Arthropod Dynamics Under Conservation Agriculture

IF 2.3 2区 生物学 Q2 ECOLOGY
Amandrie Louw, Johann Strauss, Pia Addison
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Abstract

Diversification through integrating diverse crop species and livestock is key to enhancing above-ground arthropod diversity and promoting the sustainability of cropping systems within conservation agriculture (CA) in South Africa. This study compared two crop rotation treatments, A (Wheat-Wheat-Wheat-Wheat) and G (Canola-Medics-Wheat-Medics), as part of a long-term CA trial conducted in a wheat-producing region of South Africa. For crop rotation system G, each phase of the rotation sequence was represented in separate plots annually. Surface-dwelling arthropods were sampled using pitfall traps, while plant-dwelling arthropods were captured through sweep-net sampling. These methods comprehensively assessed above-ground arthropod diversity 90 days after crop emergence. The results showed that crop rotation diversification positively influenced arthropod diversity, though the effects varied depending on the arthropod group and sampling position. Ground-dwelling arthropods exhibited less pronounced differences between crop rotation systems, whereas plant-dwelling arthropods displayed more crop-specific variations. Analysis of individual arthropod orders revealed that the effects of crop rotation diversification varied across different arthropod groups. Our findings emphasize the importance of examining multiple arthropod groups to understand diversification's impacts fully within CA farming systems.

Abstract Image

轮作多样化和畜禽整合对保护性农业地上节肢动物动态的影响
在南非,通过整合多种作物物种和牲畜实现多样化是加强地上节肢动物多样性和促进保护性农业(CA)种植系统可持续性的关键。这项研究比较了两种轮作处理,A(小麦-小麦-小麦-小麦)和G(油菜-小麦-小麦-小麦),这是在南非小麦产区进行的一项长期轮作试验的一部分。在轮作系统G中,轮作序列的每个阶段以每年单独的样地表示。地表节肢动物采用诱捕法,植物节肢动物采用扫网法。这些方法综合评价了作物出苗后90天地上节肢动物的多样性。结果表明,作物轮作多样化对节肢动物多样性有正向影响,但影响程度因节肢动物类群和取样位置的不同而不同。地生节肢动物在作物轮作系统中表现出不太明显的差异,而植物性节肢动物则表现出更多的作物特异性差异。对节肢动物单目的分析表明,作物轮作多样化对不同节肢动物类群的影响存在差异。我们的研究结果强调了研究多个节肢动物群体的重要性,以充分了解多样化对CA农业系统的影响。
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来源期刊
CiteScore
4.40
自引率
3.80%
发文量
1027
审稿时长
3-6 weeks
期刊介绍: Ecology and Evolution is the peer reviewed journal for rapid dissemination of research in all areas of ecology, evolution and conservation science. The journal gives priority to quality research reports, theoretical or empirical, that develop our understanding of organisms and their diversity, interactions between them, and the natural environment. Ecology and Evolution gives prompt and equal consideration to papers reporting theoretical, experimental, applied and descriptive work in terrestrial and aquatic environments. The journal will consider submissions across taxa in areas including but not limited to micro and macro ecological and evolutionary processes, characteristics of and interactions between individuals, populations, communities and the environment, physiological responses to environmental change, population genetics and phylogenetics, relatedness and kin selection, life histories, systematics and taxonomy, conservation genetics, extinction, speciation, adaption, behaviour, biodiversity, species abundance, macroecology, population and ecosystem dynamics, and conservation policy.
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