Composition and structure of the marine benthic community in Terra Nova Bay, Antarctica: Responses of the benthic assemblage to disturbances

Autor: Young Wook Ko, Yun Hee Kang, Han-Gu Choi, Sa-Heung Kim, Sang Rul Park, Kyeonglim Moon, Sun Kyeong Choi, Ian Hawes, Ji Hee Kim, Sanghee Kim
Rok vydání: 2019
Předmět:
0106 biological sciences
Geologic Sediments
Ecological Parameter Monitoring
Marine and Aquatic Sciences
01 natural sciences
Geographical Locations
Diversity index
Sedimentary Geology
Marine Ecosystems
Multidisciplinary
Ecology
biology
Eukaryota
Geology
Plants
Plankton
Biota
Bays
Community Ecology
Benthic zone
Medicine
Species evenness
Seasons
Research Article
Ecological Metrics
Algae
Science
Antarctic Regions
010603 evolutionary biology
Ecosystems
Animals
Seawater
Marine ecosystem
Community Structure
Petrology
Diatoms
010604 marine biology & hydrobiology
Ecology and Environmental Sciences
Organisms
Biology and Life Sciences
Aquatic Environments
Species diversity
Species Diversity
biology.organism_classification
Invertebrates
Marine Environments
Diatom
Phytoplankton
People and Places
Earth Sciences
Antarctica
Environmental science
Sediment
Species richness
Bay
Zdroj: PLoS ONE
PLoS ONE, Vol 14, Iss 12, p e0225551 (2019)
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0225551
Popis: The community structure and assemblages of marine benthic organisms were investigated in coastal areas near the Jang Bogo Antarctic Research Station in Terra Nova Bay during the 2012-2018 summer seasons. We also examined the recovery pattern of marine benthic organisms following disturbance due to the construction of the Jang Bogo Station. A total of 26 taxa were identified in the study area during the experimental period. Species number and diversity indices (richness, evenness, and diversity) were relatively low compared to data previously reported from Terra Nova Bay. Sphaerotylus antarcticus, Clavularia frankliniana, Hydractinia sp., Iridaea cordata, Fragilariopsis spp., Alcyonium antarcticum, and Metalaeospira pixelli were the dominant species in this area. Of these, the diatom Fragilariopsis spp. were the most abundant species, indicating their key role in maintaining the marine benthic community and controlling biogeochemical cycling. During the construction of the Jang Bogo Station, sediment coverage increased and diatoms declined due to the release of sediment into the coastal area. In February 2014, one month after the disturbance due to cyclone, the diatom coverage increased dramatically and thereby species number, richness index, and diversity index steadily rose from 2015 to 2018. However, non-metric multidimensional scaling ordination analysis of species similarities among sampling times showed that community structure had not completely recovered by 2018. Thus, long-term monitoring is required to elucidate the post-disturbance settlement mechanisms of marine benthic organisms at the study area in Terra Nova Bay.
Databáze: OpenAIRE
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