Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem
The threat from novel marine species introductions is a global issue. When Non-native marine species are introduced to novel environments and become invasive, they can affect biodiversity, industry, ecosystem function, and both human and wildlife health. Isolated areas with sensitive or highly speci...
Main Authors: | , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
Authorea, Inc.
2024
|
Subjects: | |
Online Access: | http://dx.doi.org/10.22541/au.171365344.41310480/v1 |
id |
crwinnower:10.22541/au.171365344.41310480/v1 |
---|---|
record_format |
openpolar |
spelling |
crwinnower:10.22541/au.171365344.41310480/v1 2024-06-02T07:57:46+00:00 Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem Bayley, Dan Brewin, Paul James, Ross McCarthy, Arlie Brickle, Paul 2024 http://dx.doi.org/10.22541/au.171365344.41310480/v1 unknown Authorea, Inc. posted-content 2024 crwinnower https://doi.org/10.22541/au.171365344.41310480/v1 2024-05-07T14:19:16Z The threat from novel marine species introductions is a global issue. When Non-native marine species are introduced to novel environments and become invasive, they can affect biodiversity, industry, ecosystem function, and both human and wildlife health. Isolated areas with sensitive or highly specialised endemic species can be particularly impacted. The global increase in the scope of tourism activities together with a rapidly changing climate, now put these remote ecosystems under threat. In this context, we analyse invasion pathways into South Georgia & the South Sandwich Islands (SGSSI) for marine non-native species via vessel biofouling. The SGSSI archipelago has high biodiversity and endemism, and has historically been highly isolated from the South American mainland. The islands sit just below the Polar Front temperature boundary, affording some protection against introductions. However, the region is now warming and SGSSI increasingly acts as a gateway port for vessel traffic into the wider Antarctic, amplifying invasion likelihood. We use remote AIS vessel-tracking data over a two-year period to map vessel movement and behaviour around South Georgia, and across the ‘Scotia Sea’, ‘Magellanic’, and northern ‘Continental High Antarctic’ ecoregions. We find multiple vessel types from locations across the globe frequently now enter shallow inshore waters and stop for prolonged periods (weeks/months) at anchor. Vessels are active throughout the year and stop at multiple port hubs, frequently crossing international waters and ecoregions. Management recommendations to reduce marine invasion likelihood within SGSSI include initiating benthic and hull monitoring at the identified activity/dispersion hubs of King Edward Point, Bay of Isles, Gold Harbour, St Andrews Bay and Stromness Bay. More broadly, regional collaboration and coordination is necessary at neighbouring international ports. Here vessels need increased pre- and post-arrival biosecurity assessment following set protocols, and improved monitoring ... Other/Unknown Material Antarc* Antarctic Scotia Sea South Sandwich Islands The Winnower Antarctic Bay of Isles ENVELOPE(-37.387,-37.387,-54.028,-54.028) Gold Harbour ENVELOPE(-35.931,-35.931,-54.625,-54.625) King Edward Point ENVELOPE(-36.496,-36.496,-54.284,-54.284) Sandwich Islands Scotia Sea South Georgia ENVELOPE(-33.000,-33.000,-56.000,-56.000) South Sandwich Islands Stromness ENVELOPE(-36.716,-36.716,-54.156,-54.156) Stromness Bay ENVELOPE(-36.640,-36.640,-54.153,-54.153) |
institution |
Open Polar |
collection |
The Winnower |
op_collection_id |
crwinnower |
language |
unknown |
description |
The threat from novel marine species introductions is a global issue. When Non-native marine species are introduced to novel environments and become invasive, they can affect biodiversity, industry, ecosystem function, and both human and wildlife health. Isolated areas with sensitive or highly specialised endemic species can be particularly impacted. The global increase in the scope of tourism activities together with a rapidly changing climate, now put these remote ecosystems under threat. In this context, we analyse invasion pathways into South Georgia & the South Sandwich Islands (SGSSI) for marine non-native species via vessel biofouling. The SGSSI archipelago has high biodiversity and endemism, and has historically been highly isolated from the South American mainland. The islands sit just below the Polar Front temperature boundary, affording some protection against introductions. However, the region is now warming and SGSSI increasingly acts as a gateway port for vessel traffic into the wider Antarctic, amplifying invasion likelihood. We use remote AIS vessel-tracking data over a two-year period to map vessel movement and behaviour around South Georgia, and across the ‘Scotia Sea’, ‘Magellanic’, and northern ‘Continental High Antarctic’ ecoregions. We find multiple vessel types from locations across the globe frequently now enter shallow inshore waters and stop for prolonged periods (weeks/months) at anchor. Vessels are active throughout the year and stop at multiple port hubs, frequently crossing international waters and ecoregions. Management recommendations to reduce marine invasion likelihood within SGSSI include initiating benthic and hull monitoring at the identified activity/dispersion hubs of King Edward Point, Bay of Isles, Gold Harbour, St Andrews Bay and Stromness Bay. More broadly, regional collaboration and coordination is necessary at neighbouring international ports. Here vessels need increased pre- and post-arrival biosecurity assessment following set protocols, and improved monitoring ... |
format |
Other/Unknown Material |
author |
Bayley, Dan Brewin, Paul James, Ross McCarthy, Arlie Brickle, Paul |
spellingShingle |
Bayley, Dan Brewin, Paul James, Ross McCarthy, Arlie Brickle, Paul Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
author_facet |
Bayley, Dan Brewin, Paul James, Ross McCarthy, Arlie Brickle, Paul |
author_sort |
Bayley, Dan |
title |
Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
title_short |
Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
title_full |
Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
title_fullStr |
Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
title_full_unstemmed |
Identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-Antarctic ecosystem |
title_sort |
identifying marine invasion threats and management priorities through introduction pathway analysis in a remote sub-antarctic ecosystem |
publisher |
Authorea, Inc. |
publishDate |
2024 |
url |
http://dx.doi.org/10.22541/au.171365344.41310480/v1 |
long_lat |
ENVELOPE(-37.387,-37.387,-54.028,-54.028) ENVELOPE(-35.931,-35.931,-54.625,-54.625) ENVELOPE(-36.496,-36.496,-54.284,-54.284) ENVELOPE(-33.000,-33.000,-56.000,-56.000) ENVELOPE(-36.716,-36.716,-54.156,-54.156) ENVELOPE(-36.640,-36.640,-54.153,-54.153) |
geographic |
Antarctic Bay of Isles Gold Harbour King Edward Point Sandwich Islands Scotia Sea South Georgia South Sandwich Islands Stromness Stromness Bay |
geographic_facet |
Antarctic Bay of Isles Gold Harbour King Edward Point Sandwich Islands Scotia Sea South Georgia South Sandwich Islands Stromness Stromness Bay |
genre |
Antarc* Antarctic Scotia Sea South Sandwich Islands |
genre_facet |
Antarc* Antarctic Scotia Sea South Sandwich Islands |
op_doi |
https://doi.org/10.22541/au.171365344.41310480/v1 |
_version_ |
1800740958523883520 |