Investigating factors underlying human-wildlife conflicts in agricultural landscapes is important for both preventing crop damage and wildlife conservation. Although environments surrounding crop fields are considered causal factors, incorporating individual aspects of animals, such as demographic and physical characteristics, into the investigation may aid the prediction of how nuisance control affects wildlife population structures. Here, we assessed the relationship of corn consumption by Hokkaido brown bears (Ursus arctos) with both demographic (sex and age) and physical (body size) characteristics and environmental factors (human presence and crop accessibility). We estimated the proportion of corn in the lifespan diet for both female (n = 61) and male (n = 62) bears using carbon and nitrogen stable isotope analyses. Then, we analyzed the factors correlated with corn consumption using a generalized linear model. Female and male bears consumed corn from 1.3 to 30.9% and 1.3 to 42.0% of their lifespan diet, respectively. Corn consumption by female bears was not correlated with any explanatory variables, whereas that of male bears was positively correlated with their body size and crop accessibility but negatively correlated with human presence. Large male bears were more likely to have consumed more corn than small male bears, but the selective harvest of large bears may cause dwarfism of their overall population, impacting the local population dynamics. To reduce agricultural damage and population structure alteration of brown bears, the opportunity for them to learn to eat crops must be eliminated through border management between forests and agricultural fields and the relocation of agricultural fields when possible.

调查农业景观中人与野生动物冲突的潜在因素对于防止作物受损和野生动植物保护均很重要。尽管耕地周围的环境被认为是因果关系，但将动物的各个方面（如人口统计和身体特征）纳入调查可能有助于预测有害控制如何影响野生动植物种群结构。在这里，我们评估了北海道棕熊（Ursus arctos）消耗的玉米与人口统计（性别和年龄）和身体（体重）特征以及环境因素（人类的存在和农作物可及性）之间的关系。我们估算了女性（n  = 61）和男性（n = 62）熊使用碳和氮稳定同位素分析。然后，我们使用广义线性模型分析了与玉米消耗量相关的因素。雌性和雄性熊消耗的玉米分别占其寿命饮食的1.3％至30.9％和1.3％至42.0％。雌性熊的玉米消耗量与任何解释性变量均不相关，而雄性熊的玉米消耗量与其体型和作物可及性呈正相关，而与人类的存在呈负相关。大公熊比小公熊消耗玉米的可能性更大，但是大熊的选择性收获可能导致它们的总体种群相形见,，从而影响了当地的种群动态。为了减少棕熊对农业的破坏和人口结构的变化，