In the alpine region, researchers studied how two types of seedlings respond to different amounts of light and water in the soil. They found that both types of seedlings grew better when there was more light at first, but then their growth decreased as the light increased too much. When there was more water in the soil, both types of seedlings grew better and used water more efficiently. One type of seedling, S.argentea, was better at handling drought conditions and using light efficiently compared to the other type, H.rhamnoides. Overall, S.argentea seedlings were more productive in dry conditions than H.rhamnoides seedlings.