AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI
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Autori: MĂRGĂRIT-MIRCEA NISTOR, MĂDĂLIN IOAN PETCU.
We have demonstrated for the first which is the terrestrial and marine ecosystems of the Prince Wiliam Sound bay, with some examples of biocenosis. Once the glaciers started to melt, a new land mass is discovered for redeveloping the vegetation and wildlife habitat. Under climate change, the land scape evolves and the ecosystems evolved, too. We describe the space cover by glaciers and the evolution of landscape as a result of glaciers retreat. The marine ecosystem has the largest area, about 19801 km², found in study area. In the rainforest, there are living land mammals, a lot of birds’ species, amphibians and only one type of reptile. Fresh water ecosystems are fed springs, temporary streams, creeks provided by glaciers, rivers, glacial lakes and water from thawing snow. We show the evolution of Portage Glacier in last century. Prince William Sound was affected by natural disturbance and human activity. An example of natural disturbance in Prince William Sound is provided by the effects of the earthquake. The naval accident and the fishing industry represent the modality of disturbance of Prince William Sound ecosystem, on artificial ways. In fine, the evolution of Prince William Sound landscape may have three directions, each one with the possibility of creating a new ecosystem: a new fiord, a new lake or a new land territory.
Key words: glaciers, evolution, rainforest, landscape, ecosystem.
