This transitional hydrographic character is reflected in the species composition of the ecosystem, which contains elements from both the North Sea and the English Channel.
(This transitional hydrographic character; is reflected; in the species composition of the ecosystem) (the ecosystem; contains; elements from both the North Sea and the English Channel)
This transitional hydrographic character the ecosystem
is reflected contains
in the species composition of the ecosystem
elements from both the North Sea and the English Channel