Author:
Lange Priscila Kienteca,Ligowski Ryszard,Tenenbaum Denise Rivera
Abstract
ABSTRACTConsidering that phytoplankton assemblages are good bioindicators of environmental conditions, the sensitivity of the Western Antarctic Peninsula (WAP) to climate change, and the importance of some areas of its islands as Antarctic Specially Managed Areas, this work assembles published datasets on phytoplankton biodiversity and ecology in confined coastal areas (embayments) of King George Island, WAP. Over 33 years (1980–2013), 415 species from 122 genera have been identified to species level, being mostly diatoms (371 species), with 10 new species described with local material (6 diatoms, 4 cyanobacteria). The importance of diatoms was indicated by the frequent occurrence of Corethron pennatum, Pseudogomphonema kamtshaticum, and abundant benthic genera in the plankton (e.g. Navicula, Cocconeis). The increased contribution of dinoflagellates after 2010 suggests marked changes in the water column. Early-summer blooms differ between the bays' eastern and western shores, with terrestrial melting and wind-driven upwelling inducing the dominance of benthic species at eastern shores, whereas planktonic diatoms (Thalassiosira, Pseudo-nizschia, and Chaetoceros) are most abundant along western shores and central areas. The importance of an accurate identification of organisms that are becoming key ecological components of the region is discussed, as recent changes in the microflora may affect the entire marine food web.
Publisher
Cambridge University Press (CUP)
Subject
General Earth and Planetary Sciences,Ecology,Geography, Planning and Development
Reference101 articles.
1. Spatial and seasonal variability of temperature and salinity in the Bransfield Strait and Admiralty Bay, Antarctica;Rakusa-Suszczewski;Polish Polar Research,1996
2. Currents circulation in the waters of Admiralty Bay region of Arctowski Station on King George Island;Pruszak;Polish Polar Research,1980
3. Sources, diversity and circulation of biogenic compounds in Admiralty Bay, King George Island, Antarctica
4. Dynamics of phytoplankton communities during late summer around the tip of the Antarctic Peninsula
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献