Hans-Jürgen Hirche

Reproduction, growth and secondary production of Pseudocalanus elongatus Boeck (Copepoda, Calanoida) in the southern North Sea (2008)

Renz, Jasmin, Mengedoht, Dirk, Hirche, Hans-Jürgen

The seasonal cycle of population dynamics and production of the dominant copepod Pseudocalanus elongatus in the southern North Sea was described using for the first time concurrent shipboard...

Living below the halocline: strategies of deep-living species in the highly stratified brackish Bornholm Basin (central Baltic Basin) (2007)

Schulz, Jan, Hirche, Hans-Jürgen

The Baltic Sea is the largest brackish water area of the world. On the basis of the data from 16 cruises, we show the seasonal and vertical distribution patterns of the appendicularians Fritillaria...

Spatial distribution of digestive enzyme activities of Calanus finmarchicus and C.hyperboreus in Fram Strait/Greenland Sea (1989)

Hirche, Hans-Jürgen

Digestive enzymes of copepodite V (CV) Calanus finmarchicus and C.hyperboreus from two different depths were compared during MIZEX 1984 (June/July) at stations in the ice and open water. CV of...