English: This diagram illustrates trophic cascade in an environment. The cascade to the left shows a healthy ecosystem with a top predator, a primary consumer and a primary producer. The wolf at the top of the cascade is the top predator of the environment. The top predator makes sure that the deer and elk populations stay at healthy levels. This in turn relieves grazing pressures from the primary producers. This allows all the animal populations to stay in balance with each other. However in the cascade to the right the top predator is removed. The deer and elk population is then left with no big predators to control them. The population is able to grow to an unsustainable size, passing their carrying capacity the producers can provide. The trees are striped of bark and leaves as far as the animals can reach and the forest floor is absent of growth because of the grazing pressure from the primary consumers.
partekatzeko – lana kopiatzeko, banatzeko eta bidaltzeko
birnahasteko – lana moldatzeko
Ondorengo baldintzen pean:
eskuduntza – Egiletza behar bezala aitortu behar duzu, lizentzia ikusteko esteka gehitu, eta ea aldaketak egin diren aipatu. Era egokian egin behar duzu hori guztia, baina inola ere ez egileak zure lana edo zure erabilera babesten duela irudikatuz.
berdin partekatu – Lan honetan oinarrituta edo aldatuta berria eraikitzen baduzu, emaitza lana hau bezalako lizentzia batekin argitaratu behar duzu.
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