Global-scale studies are necessary to draw general conclusions on how trophic interactions vary with urbanization and to explore how the effects of urbanization change along latitudinal gradients. We predict that the intensity of trophic interactions decreases in response to urbanization (quantified by human population density). Since trophic interactions are more intense at lower latitudes, we also expect major impacts of urbanization at higher latitudes, where base levels are essentially lower.

中文翻译：

---

人口密度对营养相互作用的影响取决于纬度


有必要进行全球范围的研究，以得出关于营养相互作用如何随城市化而变化的一般结论，并探索城市化的影响如何沿纬度梯度变化。我们预测，营养相互作用的强度会随着城市化而降低（通过人口密度量化）。由于低纬度地区的营养相互作用更为强烈，我们预计城市化也会对高纬度地区产生重大影响，因为那里的基准水位基本上较低。