Legendary colleagues meet as soon as once more; in the hunt for Idzi Drzycimskis harpacticoids with assist of R/V Hans Brattström

Professor Dr. Idzi Drzycimski was one of many few who studied copepods right here in Bergen, and in notably the order of Harpacticoida. Drzycimski was foremost an occupied oceanologist and ichthyologist (the research of fish), however throughout his profession he additionally described a number of new species from the order Harpacticoida. A couple of of these data are from Norway and are presently an essential useful resource for our research of hyberbenthic copepods (HYPCOP). Drzycimski stayed in Bergen for just a few years through the sixties and construct up an intensive assortment of copepods.  

 

Idzi Drzycimski 

Idzi Drzycimski was born December 5th, 1933 in Klonowo; a really small village North of Bydgoszcz, Poland. He studied Biology with a specialization in Hydrobiology on the Odessa College of I.I. Miecznikow. In 1957 he graduated and began working on the Sea fisheries Institute in Gdynia on the Oceanography Division, led by Professor Kazimierz Demel. Later adopted by a profession on the Division of Oceanography and Marine Biology on the College of Agriculture in Olsztyn, College of Fisheries. In 1963 he obtained the diploma of Physician in pure sciences and in 1969 he habilitated. In 1985 he acquired the tutorial title of affiliate professor and ultimately grew to become full professor in the identical 12 months.

All through his profession he accomplished a number of internships in Germany, Norway, Italy and took part in a number of analysis cruises within the South Baltic Sea, North Sea and the Norwegian Fjords. Throughout these cruises he collected and described 11 species new to science and three new sorts of marine crustaceans which have entered into the worldwide zoological systematics. He promoted 8 docs and continued to be the pinnacle of the division of oceanography on the school of sea fisheries. All whereas he printed a whole bunch of articles and eventually in 2001 he was awarded the Medal of Professor Kazimierz Demel.

 

 

Sampling for copepods 

As famous earlier, HYPCOP makes use of Drzycimski works for the venture; his database, assortment and publications from his years in Bergen are good supply of knowledge. Drzycimski printed two publications with Harpacticoida findings from 1967 and 1968. He described 5 new species of Harpactcoida from West Norway, with sampling areas near Bergen. Now, half a century later, we wished to revisit these sampling websites to see if we may discover the identical or completely different species. Some off the sampling areas have been from the center of the fjords close to Bergen and would due to this fact be wonderful to revisit.  Drzycimski had sampled completely different spots from across the Krossfjorden, Bjørnefjorden and Raunefjorden. Most of those have been deep sandy and muddy bottoms, from round 300-700m. Species that he had discovered there he described as Marsteinia typica, Pseudotachidius vikingus, Marsteinia similis, Leptopsyllus elongatus and Dorsiceratus octocornis. These all have the everyday small physique sizes of round 400-800 μm and are very inconspicuous and arduous to seek out with the bare eye.  

 

Brattström & Drzycimski 

 

With assist of analysis vessel Hand Brattström and researcher Anne Helene Tandberg, we managed to pattern two areas within the Krossfjorden between 400-700m depth that have been sampled earlier than within the 60s by Drzycimski. Previous to the sampling day we made a success record of 4 areas that we wished to revisit, however two of these areas bought inaccessible. Within the span of 60 years loads of issues have modified, locations that when the place simple accessible for sampling are these days suffering from e.g. fishing gear waste. Which might destroy our plankton nets after they get caught on this. On high off that Drzycimski additionally didn’t describe in his papers how he managed to gather his copepod samples, however most definitely this was executed with a sled, and on this case we’d be utilizing the R.P. sled. The R.P. sled is an epibenthic sampler. That signifies that it samples the

animals that stay simply on the high of the (delicate) seafloor with a positive plankton web, if you wish to learn extra particulars in regards to the R.P. sled you possibly can learn that right here. As soon as once more our sled knowledgeable Anne Helene would be a part of us on this journey to assist HYPCOP with sampling and in addition to be looking out for sampling for amphipods. After the sled collected the benthic animals, we would have liked to filter the sled pattern by a course of which is known as decanting (See the YouTube film in this weblog).  With decanting you separate the combination of the animal soup from the liquid by washing them in a giant bucket, throw the liquid by way of a filter and gather the animals rigorously to keep away from damaging them.  

 

 

 

 

Drzycimskis go to on the museum was through the years of Hans Brattströms Professorship on the College of Bergen in marine biology (1962-1978). Throughout these years Brattström began the scientific journal Sarsia, the place Drzycimski printed his copepod species description’s. There’s not a lot about whether or not the 2 professors knew one another nicely, however it is rather seemingly. And so it was particular that few generations later, Hans Brattström as soon as once more facilitates analysis for Drzycimski, though this time as a analysis vessel and a brand new era of scientists engaged on marine benthos.  

Cessa & Anne Helene 

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Literature:

Drzycimski, I. “Zvvei neue Harpacticoida (Copepoda) aus dem Westnorwegischen Kdstengebiet.” Sarsia 30.1 (1967): 75-82. 

Drzycimski, I. “Drei neue Harpacticoida aus westnorwegen.” Sarsia 36.1 (1968): 55-64.