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In Alaskan kelp forest ecosystems, sea otters are the keystone species that mediates this trophic cascade. In Southern California, kelp forests persist without sea otters and the control of herbivorous urchins is instead mediated by a suite of predators including lobsters and large fishes, such as the California sheephead.
This is a list of all mammals currently found in the U.S. state of Alaska, whether resident or as migrants.With 112 mammal species, Alaska ranks 12th of the 50 U.S. states in mammalian diversity. [1]
The Alaskan subspecies of moose (Alces alces gigas) is the largest in the world; adult males weigh 1,200 to 1,600 pounds (542–725 kg), and adult females weigh 800 to 1,300 pounds (364–591 kg) [17] Alaska's substantial moose population is controlled by predators such as bears and wolves, which prey mainly on vulnerable calves, as well as by ...
Giant kelp forests surround the islands and act as a source of nutrition and protection for other animals. [2] Invasive species, such as the Australian blue gum tree, olive tree, sweet fennel and Harding grass threaten native species through competition for light, nutrients, and water. The Australian blue gum, for example, releases toxins in ...
The region is strongly influenced by the large mountain ranges stretching throughout most of the coast. Changes in elevation cause changes in plant/animal diversity, this can be exemplified through observing the alpine tundra's vegetation which consists of shrubs, herbs, mosses, and lichens; while lower elevations, the temperate coastal forest hold magnificently large trees such as western ...
Sea urchins graze on the lower stems of kelp, causing the kelp to drift away and die. Loss of the habitat and nutrients provided by kelp forests leads to profound cascade effects on the marine ecosystem. North Pacific areas that do not have sea otters often turn into urchin barrens, with abundant sea urchins and no kelp forest. [76]
Tidy (voiced by John Tartaglia) is an ablutomanic garabaldi, who serves as a kelp forest ranger. Gush (voiced by Allan Trautman) is an intelligent painted frogfish who is shown to have experience in dancing, helpful tips, and racing. Flo (voiced by Leslie Carrara-Rudolph) is a hawksbill sea turtle who acts as Reeftown's medical professional.
Kelp may develop dense forests with high production, [27] [28] biodiversity and ecological function. Along the Norwegian coast these forests cover 5,800 km 2, [29] and they support large numbers of animals.
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