July 29, 2016 — What makes any species on Earth seek greener horizons? A disaster. Lack of food or water. An unsuitable change in habitat. With people, it’s sometimes the drive to merely explore. With wildlife, though, it usually boils down to survival.
Every day, there is a change occurring somewhere on this planet. It might be imperceptible to the naked eye or it might be as obvious as an earthquake or a volcano. When a change does takes place, there isn’t just one occurrence, but rather, an accompanying domino effect. The effects might be felt instantly or they may take centuries to get noticed.
We’ve seen Long Island Sound and its tributaries fall from a rich, prolific waterway to the compromised body of water left in the wake of the early industrial era. From that, we’ve learned a valuable lesson and today we see the results of a Herculean restoration effort. Many of our fisheries that had been reduced by cataclysmic proportions have rebounded or are in the process of rebounding. Some, like our river herring, are still struggling.
Very often, some sort of over-fishing is the culprit. In some cases, a die-off can be attributed to reducing a stock. For the most part, what we are seeing along the Atlantic coast and in the Sound is a change in water temperature. As a result, the Sound is attracting more food, such as schools of menhaden, squid, butterfish, spearing, and shrimp. That increase in forage, coupled with higher water temperatures, brings in more southern and mid-Atlantic species of fish, as well as northern migrants that now take a detour into the Big Pond as they perhaps once did in the past.