65 英尺长的 DNR 研究船 Steelhead 抵达圣约瑟夫，研究密歇根湖鱼类种群。 65-foot DNR research vessel Steelhead arrives in St. Joseph to study Lake Michigan fish populations.
密歇根州 65 英尺长的 DNR 研究船 Steelhead 已抵达圣约瑟夫，研究密歇根湖沿岸的鱼类种群。 Michigan's 65-foot DNR research vessel, Steelhead, has arrived in St. Joseph, studying fish populations along Lake Michigan. 标准湖泊评估协议检查了湖鳟鱼、白鱼、鱼、鲈鱼和江鳕。 The Standard Lakewide Assessment protocol examines lake trout, whitefish, fish, perch, and burbot. 该团队在索格塔克、南黑文、大海滩和圣约瑟夫等港口垂直于海岸的不同深度设置了六张不同网眼尺寸的刺网。 The team sets six gill nets of various mesh sizes at different depths perpendicular to shore at ports like Saugatuck, South Haven, Grand Beach, and St. Joseph.