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The survey is changing the southern ecosystem of the Gulf of San Lorenzo



MONCTON, N.B. – Surgeons in the southern Gulf of Saint Lawrence have found corals, sharks, sharpened waves, and even an unexpected investment in crustaceans and farmhouses, the region is a fishing mecca.

The main biologist of the ship said the annual survey – which explored 66 species of fish – explains how years pass.

"It's striking that ecotourism is changing," Nicolas Rolland told Moncton, N.B.

"20 years ago or at least 30 years ago and as we can see now, the abundance and quantity of fish in the Gulf of the South has dropped a lot."

The survey began in 1971 as a review of major commercial fish such as cod and halibut, but became an annual scientific assessment on deep seabirds.

Last September, a coastal safety boat conducted crews and federal scientists at Quebec's Gaspe Peninsula and Cape Breton Island Point Point to examine nearby ecosystems.

Traces of sea creatures were brought to the surface every two hours, and scientists sorted, measured and evaluated the number of age and stomach contents before beginning again.

Rolland said that the density of some fish species fell sharply, especially flat fish such as cod or American jelly. Rolland said some people have lost 90 percent in the population 20 years ago.

There are many complex factors behind the change: climate change, fishing and seals like prey probably played a role, he said.

But because some populations have been diminished, others have moved or bounced.

Most of the lower parts appear to decline in population, but Rolland says that the population of crustaceans, lobsters and crab populations are steadily rising.

Small fish species such as small eggs, similar to those of the southern prey, have appeared in larger numbers.

Others include tuna, striped and red fish.

Fisheries and Oceans In Canada, 50,000 fish and crustaceans were distributed in almost 2018.

"The wet laboratory is not the most beautiful place," said Rolland.

"It's indecisive, it's wet, water is everywhere … it's noisy, we're at the bottom, most of it is a rough sea, too."

But he deserves the job, he said, due to the experience of controlling animals that are not seen outside of aquariums.

In the last year, there was a sponge specialist in the microscope, which revealed the differences between small species, as the region was unknown, and could be a newly discovered species.

The group watched the sea cucumbers and star-like mares like a shark.

Every year, it takes a series of dangers that are covered by the survey, paying close attention to the strict tubes of 50 cm long before releasing the water again.

Rolland said it was exciting to showcase the handfuls of the students on the table, only in a water tanker.

The survey results are used to determine fishing quotas and determine the abundance of the species, but they are also important in scientific research.

– Holly McKenzie-Sutter in San Juan, N.L.


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