Consider Joshua trees, which are confined to elevations between 400-1800 m (2000-6000 ft) in the Mojave Desert. To grow any lower than 400 m or any further south than the Mojave Desert would be suicide by drought. However, they grew lower in elevation and further south during the cooler and wetter climate of the last glacial period. This means that Joshua trees expand their range when they can. So why don’t they live in coastal southern California? [Aside – they do, even at CUI along the Egypt parking lot – but only if people bring them here.] If a Joshua tree could take a coastal vacation, it would likely find the climate to be ideal for growth. However, it would never reproduce. To reproduce, Joshua trees depend on a variety of yucca moth that is genetically programmed for stuffing a little ball of pollen into the cup-shaped stigma of Joshua tree flowers. This relationship is mutually vital for both plant and moth, and for a complexity of reasons that are not fully understood, the Mojave Desert is where these two species have been stuck with each other since the beginning.

Based on this example, what specific information in the prompt above would Grinnell use to describe the niche of the Joshua tree? Explain.
. Which authors’ conceptualization of the ecological niche would result in a larger geographical area being deemed suitable for the Joshua Tree: Grinnell or Hutchinson? Explain. this one it’s hutchinson but im having a hard time explaining in more detail