Emerald Basin and Sambro Bank Sponge Conservation Areas
- Scotian Shelf Bioregion (Nova Scotia)
- Approximate Size (km2) contribution to Marine Conservation Targets
- 260 km2
- Approximate % coverage contribution to Marine Conservation Targets
- Conservation Objective
- Protect Vazella pourtalesi glass sponges
Ecological Components of Interest
The following ecological components of interest are conserved through the prohibitions.
Species of regional importance: Vazella pourtalesi glass sponges
- Why they are important: This is a significant concentration of Vazella pourtalesi, a structure-forming species of glass sponge that is not found in aggregations in other areas where it occurs.
Habitat that is important to biodiversity conservation: Vazella pourtalesi glass sponges
- Why it is important: This structure-forming species provides habitat for many other species.
All commercial bottom-contact fishing gear.
No other human activities that take place in this area are incompatible with the conservation of the ecological components of interest.
These closures include portions of sponge areas identified as significant under the Policy for Managing the Impact of Fishing on Sensitive Benthic Areas.
Sponge-dominated communities modify bottom currents and create habitat. Glass sponge aggregations provide a link between benthic (bottom layer) and pelagic (upper layer) environments, play an important role in carbon and nitrogen processing, and act as a silica sink.
Sponge aggregations offer important structural habitat, providing refuge and nursery areas for a variety of marine species.
Prohibition on bottom-contact gear can protect not only the sponges but a diversity of other species of fish and invertebrates that utilize the complex structural habitat the sponges provide. This area can act as a natural refuge area that may contribute to increased species productivity and in turn potentially lead to increased abundance within and adjacent to the areas.
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