Large marine ecosystems, particularly the open ocean, are generally considered the most stable ecosystems. This is due to several factors: their vast size, relatively uniform and stable environmental conditions (temperature, salinity) over large areas and depths, and high species diversity which contributes to resilience. Terrestrial ecosystems (forests, deserts, grasslands) are subject to greater fluctuations in temperature, precipitation, and human impact, making them generally less stable than large marine systems.