Temat: water age - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Changes in location of population of sandhoppers Talorchestia deshayesii (Audouin, 1826), according to age
Zmiany w rozmieszczeniu populacji zmieraczka zatokowego Talorchestia deshayesii (Audouin, 1826) w zależności od wieku
Autorzy:: Koziel, M.
Powiązania:: https://bibliotekanauki.pl/articles/84897.pdf
Data publikacji:: 2004
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: location change
animal population
sandhopper
Talorchestia deshayesii
animal age
fauna
sandy beach
Talitridae
Baltic Sea
water line
Hel Peninsula
invertebrate
young animal
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2004, 08
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Distribution, genetic structure and ecological role of Dreissena polymorpha (Pallas) in Lake Dabie, Western Pomerania, Poland
Autorzy:: Piesik, Z.
Zielinski, R.
Wachowiak-Zielinska, M.
Ochman, T.
Soroka, M.
Polok, K.
Powiązania:: https://bibliotekanauki.pl/articles/85237.pdf
Data publikacji:: 1998
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: distribution
genetic structure
ecological role
Dreissena polymorpha
Lake Dabie
West Pomeranian region
Polska
Pomeranian region
bottom
lake
phytoplankton
biomass
age composition
polymorphism
water body
zebra mussel
Odra River
estuary
Opis:: Dreissena polymorpha inhabits about 46.5% of the bottom area in Lake Dabie. It is most abundant in the northern part of the lake and sporadically occurs in its southern part. The average density of the zebra mussel is 891 individuals/m², while its wet weight is 1374 g/ m². In the settled areas the density of the zebra mussel reaches 1734 individuals/ m². There were presently established 7 age-groups from 0 to 6+. The highest number of specimens occurred in the age-groups between 1+ and 3+, while the lowest number - in the groups 0, 5 and 6+. Strong eutrophication and pollution of Lake Dabie on its southern side, combined with sedimentation of the extensive amounts of seston carried in by the Płonia and Regalica rivers, do not create favourable conditions for development of Dreissena. D. polymorpha plays a very positive role in the lake ecosystem through its biofiltrating action, contributing thus to an increase of water clarity and to limitation of phytoplankton development through cumulating nutrients in its biomass. Electrophoretic analysis of 9 enzymatic loci revealed strong polymorphism of the studied population of the zebra mussel: percent of polymorphic loci - 100, mean number of alleles in locus – 3.4, coefficient of expected heterozygosity per locus in the population, HS - 0.335, percentage of separate genotypes - 69%, in this number unique genotypes - 58%. A very strong scattering of the alleles was stated within the entire population. In each aggregation, on average, 90% of the specimens have a separate genotype. Each of the five defined groups of D. polymorpha, representing profiles I-V, respectively, had similar genetic composition. The values of the genetic similarity among the studied groups of the zebra mussel ranged from 0.96 to 0.99.
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 1998, 02
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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