In their absence, the sea urchin population proliferated. Sea urchins eat kelp, and the explosion in their population greatly diminished kelp forests, which provide critical habitat and nutrition for ...
1993). There are a number of other well-described examples where keystone species act as determinate predators. Sea otters (i) regulate sea urchin populations, which in turn feed upon kelp and ...
"Now the black sea urchin disappeared from all the areas I surveyed north of Hurghada to south of Marsa Alam. I could not find a single specimen." He says this suggests the species is disappearing ...
Urchins however are readily consumed by sea otters (keystone species), and by keeping urchin numbers low, otters assure that the kelp forest community remains intact. Bottom-up forces influence ...
Activator of G-protein signaling C-terminus serves as a variable element to induce asymmetric cell division, facilitating developmental diversity among species.