Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2008
Volume 11
Issue 4
Topic:
Fisheries
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Chojnacki J. , Antończak E. 2008. SEASONAL CHANGES IN THE NERITIC ZONE MESOZOOPLANKTON OF POMERANIAN BAY IN 2000, EJPAU 11(4), #29.
Available Online: http://www.ejpau.media.pl/volume11/issue4/abs-29.html

SEASONAL CHANGES IN THE NERITIC ZONE MESOZOOPLANKTON OF POMERANIAN BAY IN 2000

Juliusz C. Chojnacki, Eliza Antończak
Department of Marine Ecology and Environmental Protection, Agricultural University in Szczecin, Poland

 

ABSTRACT


Plankton samples as well as temperature,
oxygen and salinity data were collected at 9 stations in Pomeranian Bay during
the spring, summer, autumn and winter of the year 2000. Thirty four taxa were
noted, including 7 Rotatoria, 10 Cladocera, 11 Copepoda and 6 meroplanktonic
taxa. Copepoda dominated numerically, while in warm seasons of the year Cladocera
were subdominants. Taxonomic diversity of mesozooplankton was the highest in
warm seasons of the year. Stations located in the neritic zone showed changeable
abundance over time, peaking at station MIII (133.235 ind.x m-3).
Geographically plankton numbers were high (put a number in here) in samples collected
from the vicinity of the Świna River mouth. Transects from Międzyzdroje to the
mouth of the River Dziwna (respectively average abundance for the entire year
for stations within 1 Nm distance from the shore were 21.858; 30.890; 35.091
ind.x m-3). Seasonal succession followed this sequence among Copepoda:
in spring P. elongatus, while in the remaining seasons A. bifilosa dominated.
Subdominants introduced diversity into seasonal succession, especially in the
summer season, when subdominants were made up exclusively of Cladocera – E.
nordmanni, P. leuckartii, P. intermedius,
in the autumn Copepoda and Cladocera
T. longicornis, E. nordmanni, P. polyphemoides, P. elongatus,
while in
the winter these were exclusively Copepoda P. elongatus, A. longiremis, T.
longicornis.

Key words: mesozooplankton, Pomeranian Bay, seasonal changeability, qualitative and quantitative structure.


Juliusz C. Chojnacki
Department of Marine Ecology and Environmental Protection,
Agricultural University in Szczecin, Poland
Kazimierza Królewicza 4, 71-550 Szczecin, Poland
email: marecol@fish.ar.szczecin.pl

Eliza Antończak
Department of Marine Ecology and Environmental Protection,
Agricultural University in Szczecin, Poland
Kazimierza Królewicza 4, 71-550 Szczecin, Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.