Start Date
1-7-2010 12:00 AM
Abstract
In the present work the basic attention is given to research of zooplankton which within several years (1999-2006) was under the strongest influence Mnemiopsis leidyi. Last from spontaneous invasion found out on Caspian Sea was Mnemiopsis leidyi. For two (1999 - 2000) year this kind completely "occupied" Average, Southern and a part of Northern Caspian Sea therefore has suffered zooplankton. Have sharply decreased a biodiversity of zooplankton and weight characteristics. The number of kinds of zooplankton was considerably reduced. In 2000 on the average Caspian sea it was totaled 36, in Southern-24 kinds of zooplankton, and in 2001 the qualitative structure was reduced: on the average Caspian sea up to 12, in Southern - up to 7 kinds (1). The ambassador of invasion there were the some people change in trophyc to structure in pelagial and in benthos of Caspian Sea (2). During time research in coastal waters of Absheron peninsula which it was carried out within 5 years (2001-2005), the biomass of goloplankton and meroplankton was almost equal. It is necessary will note, that to the end of XX century the biomass of meroplankton has made the one third part of the general of a biomass of all of zooplankton (3). In many publications (4, 5, 6) are analyzed a long-term course of biomass Mnemiopsis leidyi and examples of its doubtless influence on structures fine fodder of zooplankton are resulted, however the consecutive analysis of change of structure of meroplankton communities was not carried out. The purpose of the present research just also is the detailed analysis connected to development - invasion.
PRESENT SITUATION OF THE ZOOPLANKTON OF THE AZERBAIJANI SECTOR CASPIAN SEA
In the present work the basic attention is given to research of zooplankton which within several years (1999-2006) was under the strongest influence Mnemiopsis leidyi. Last from spontaneous invasion found out on Caspian Sea was Mnemiopsis leidyi. For two (1999 - 2000) year this kind completely "occupied" Average, Southern and a part of Northern Caspian Sea therefore has suffered zooplankton. Have sharply decreased a biodiversity of zooplankton and weight characteristics. The number of kinds of zooplankton was considerably reduced. In 2000 on the average Caspian sea it was totaled 36, in Southern-24 kinds of zooplankton, and in 2001 the qualitative structure was reduced: on the average Caspian sea up to 12, in Southern - up to 7 kinds (1). The ambassador of invasion there were the some people change in trophyc to structure in pelagial and in benthos of Caspian Sea (2). During time research in coastal waters of Absheron peninsula which it was carried out within 5 years (2001-2005), the biomass of goloplankton and meroplankton was almost equal. It is necessary will note, that to the end of XX century the biomass of meroplankton has made the one third part of the general of a biomass of all of zooplankton (3). In many publications (4, 5, 6) are analyzed a long-term course of biomass Mnemiopsis leidyi and examples of its doubtless influence on structures fine fodder of zooplankton are resulted, however the consecutive analysis of change of structure of meroplankton communities was not carried out. The purpose of the present research just also is the detailed analysis connected to development - invasion.
