The responses of organisms to organic farming depend on the taxonomic group and landscape complexity. Following the intermediate landscape complexity hypothesis, organic farming can compensate for the lack of complexity in simple landscapes. Argentinian farmlands are simple with large fields and scarce linear habitat array, and conventional agriculture is almost the only agriculture practice. We hypothesize that there is an interaction effect of landscape complexity and farming practices on occupancy and species richness of small mammals in farmland of central Argentina. We selected circular landscapes under organic farming and low- and high-intensity conventional farming and quantified heterogeneity in each landscape considering different cover types (crops, resting plots, fallow land, border habitats, grasslands and man-made structures). We used multi-species occupancy models accounting for multiple seasons with a Bayesian approach to make the estimates. Landscapes under organic farms had the highest level of landscape heterogeneity. In simple Argentinian farmlands, organic farming benefited species richness and occupancy of all small mammal species. Some management strategies used in organic farming (wide and vegetated border habitats, diversity in types of production, winter cover crops, natural or semi-natural patches) should be taken into account to increase landscape complexity in conventional farming.

中文翻译：

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景观复杂性与阿根廷农田中小型哺乳动物占用的耕作效果评估有关。

生物对有机农业的反应取决于分类群和景观的复杂性。遵循中间景观复杂性假说，有机耕种可以弥补简单景观中缺乏复杂性的问题。阿根廷的耕地面积大且线性生境稀少，简单易行，常规农业几乎是唯一的农业实践。我们假设景观复杂性和耕作方式对阿根廷中部农田中小型哺乳动物的占有率和物种丰富度有相互作用的影响。我们选择了有机耕作以及低强度和高强度常规耕作下的圆形景观，并根据不同的覆盖类型（作物，休耕地，休耕地，边境栖息地，草原和人造结构）在每种景观中量化了异质性。我们使用贝叶斯方法使用考虑了多个季节的多物种占用模型进行估算。有机农场下的景观具有最高的景观异质性。在简单的阿根廷农田中，有机耕种有益于所有小型哺乳动物物种的丰富和占有。应考虑有机农业中使用的一些管理策略（宽阔而有植被的边界生境，生产类型的多样性，冬季遮盖作物，自然或半自然斑块），以增加常规农业的景观复杂性。有机耕作有利于所有小型哺乳动物物种的丰富和占有。应考虑有机农业中使用的一些管理策略（宽阔而有植被的边界生境，生产类型的多样性，冬季遮盖作物，自然或半自然斑块），以增加常规农业的景观复杂性。有机耕作有利于所有小型哺乳动物物种的丰富和占有。应考虑有机农业中使用的一些管理策略（宽阔而有植被的边界生境，生产类型的多样性，冬季遮盖作物，自然或半自然斑块），以增加常规农业的景观复杂性。