They also banned all harvesting during the crabs' spawning period, from early May to early June.
However, the daily time step simulation of INCA-Sed also allows the investigation of the critical spawning period.
This event occured on September 18 , 2013 just prior to the natural spawning period for salmon in this region (Fig. 1a).
Afterwards a habitat suitability index, along with biodiversity and integrity indices, was used to determine an appropriate flow velocity with full consideration of the fish spawning period.
However, since the data were derived from a "snapshot" of just a single day in what was a prolonged spawning period, this was perhaps not surprising.
Spawning females were also observed during the same period, and these results confirm that the spawning period of N. plumchrus is at least 8 months long.
Square networks of 16 particles spaced by 0.03° (1.2 1.6 km) were released daily within the mixed layer at adult sampling sites during the approximate spawning period of P. nobilis.
It has also agreed not to dredge during the fish spawning period, and it has set aside £2 million to compensate fishermen for loss of earnings, with a fisheries liaison officer to help them make their claims.
First, many of the species that make up the marine ecosystem here have had an entire spawning period to reproduce and grow without being harvested, thanks to commercial fishing moratoriums.
A failure by European Union countries to agree a management plan for sea bass stocks led to emergency measures to ban pelagic trawling – fishing away from the bottom of the sea in the water column - for the spawning period between January and April this year.
Simulated dam operations such as beginning refill of the lake 30 days earlier or reducing minimum release rates (to keep more water in the lake to retain the use of the spillway) mitigated future warming to 0.4 and 0.9 °C below existing operational scenarios during the critical autumn spawning period for endangered salmonids.
