| RRC ID |
58383
|
| 著者 |
Avila C, Angulo-Preckler C, Martín-Martín RP, Figuerola B, Griffiths HJ, Waller CL.
|
| タイトル |
Invasive marine species discovered on non-native kelp rafts in the warmest Antarctic island.
|
| ジャーナル |
Sci Rep
|
| Abstract |
Antarctic shallow coastal marine communities were long thought to be isolated from their nearest neighbours by hundreds of kilometres of deep ocean and the Antarctic Circumpolar Current. The discovery of non-native kelp washed up on Antarctic beaches led us to question the permeability of these barriers to species dispersal. According to the literature, over 70 million kelp rafts are afloat in the Southern Ocean at any one time. These living, floating islands can play host to a range of passenger species from both their original coastal location and those picked in the open ocean. Driven by winds, currents and storms towards the coast of the continent, these rafts are often cited as theoretical vectors for the introduction of new species into Antarctica and the sub-Antarctic islands. We found non-native kelps, with a wide range of "hitchhiking" passenger organisms, on an Antarctic beach inside the flooded caldera of an active volcanic island. This is the first evidence of non-native species reaching the Antarctic continent alive on kelp rafts. One passenger species, the bryozoan Membranipora membranacea, is found to be an invasive and ecologically harmful species in some cold-water regions, and this is its first record from Antarctica. The caldera of Deception Island provides considerably milder conditions than the frigid surrounding waters and it could be an ideal location for newly introduced species to become established. These findings may help to explain many of the biogeographic patterns and connections we currently see in the Southern Ocean. However, with the impacts of climate change in the region we may see an increase in the range and number of organisms capable of surviving both the long journey and becoming successfully established.
|
| 巻・号 |
10(1)
|
| ページ |
1639
|
| 公開日 |
2020-1-31
|
| DOI |
10.1038/s41598-020-58561-y
|
| PII |
10.1038/s41598-020-58561-y
|
| PMID |
32005904
|
| PMC |
PMC6994651
|
| MeSH |
Animals
Antarctic Regions
Biodiversity
Bryozoa / physiology*
Climate Change
Ecology / methods
Ecosystem
Introduced Species*
Islands
Kelp / physiology*
Membrane Microdomains / physiology
|
| IF |
3.998
|
| リソース情報 |
| GBIF |
Arthropod specimens of Natural History Museum, Kishiwada City
Crustacean collection of the National Museum of Nature and Science
Marine Invertebrata specimen database of Osaka Museum of Natutal History
Specimens of Class Maxillopoda of Akita Prefectural Museum
Marine specimens of Misaki Marine Biological Station, Graduate School of Science, The University of Tokyo
Arthropoda (excepting insect) collection of Osaka Museum of Natural History
Crustacean specimen database of Kanagawa Prefectural Museum of Natural History
Mollusca specimens of Manazuru Shell Museum |
