Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "subfossil remains" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Description of subfossil post-abdomen and post-abdominal claw of Ceriodaphnia (Cladocera, Daphniidae)
Autorzy:
Nevalainen, Liisa
Powiązania:
https://bibliotekanauki.pl/articles/2026911.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Cladocera
Ceriodaphnia
subfossil remains
identification
Opis:
Cladoceran remains preserve selectively in lake sediments. Possibly all Cladocera species leave at least some identifiable remains in lake sediments. Exosceletal body parts of families Chydoridae and Bosminidae preserve best but other families are only variably represented in sediments by their outer body parts. Identification of all possible remains helps to achieve more precise palaeolimnological reconstruction of past ecosystems by Cladocera analysis. This article describes, together with photograph and line drawing the subfossil post-abdomen and post-abdominal claw of Ceriodaphnia, previously not widely identified.
Źródło:
Studia Quaternaria; 2007, 24; 65-67
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Subfossil shell margins and tail spines of Daphnia in Finnish lake sediments - is Daphnia underrepresented in cladocera analysis?
Autorzy:
Sarmaja- Korjonen, Kaarina
Powiązania:
https://bibliotekanauki.pl/articles/2026810.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
subfossil Daphnia remains
tail spines
shell margins
lake sediments
Finland
Opis:
One of the short com ings of the analy sis of sub fos sil Cla do cera (wa ter flee) re mains is that pres er va tion of re mains is se lec tive. Of Daph nia spp. which are very com mon in zoo plank ton as sem blages of lakes, usu ally only postab domi nal claws and ephip pia are found. In the pres ent pa per I de scribe Daph nia shell mar gins and some tail spines from the Holo cene sedi ments of a lake in south ern Fin land where the mar gins were much more abun dant than the postab dominal claws, in di cat ing that postab domi nal claws may be un der rep re sented. Daph nia claws, shell mar gins and tail spines were found also in sur face sam ples of 17 Fin nish lakes and thus the abun dance of tail spines could be com pared with that of postab domi nal claws. The re sults showed that in most cases the tail spines are more abun dant than postab domi - nal claws and may give a closer es ti mate of the true abun dance of Daph nia. How ever, in some lakes claws were clearly more fre quent than tail spines. Ap par ently, there are dif fer ences in pres er va tion of dif fer ent types of Daph nia re mains be tween lakes, pos si bly con nected with wa ter chem is try. Over all, the re sults in di cate that proba bly Daph nia re mains are al ways un der rep re sented in lake sedi ments.
Źródło:
Studia Quaternaria; 2007, 24; 61-64
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of the Kładkowe Bagno peat-bog in the Late Glacial and Holocene: diversified history of two deposit basins studied with use of macrofossil remains analysis
Autorzy:
Drzymulska, Danuta
Powiązania:
https://bibliotekanauki.pl/articles/2026058.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Late Glacial
Holocene
Puszcza Knyszyńska Forest
peat
analysis of plant remains
subfossil vegetation
Opis:
This pa per pres ents re sults of in ves ti ga tion on peat and la cus trine sedi ments from the K³ad kowe Bagno peat- bog located in the Puszcza Knyszyñska For est. Us ing analy sis of plant re mains from sedi ment sam ples, vege ta tive and gen era tive finds were iden ti fied which al lowed de scrib ing peat units. Bas ing on these re sults, re con struc tion of sub fos silvege ta tion and pa laeoen vi ron men tal changes in the mire was made. Al to gether 4 sub as so cia tions of Sphag ne tum mag -el lan ici were de scribed, which de liv ered in for ma tion about hu mid ity of the mire sur face dur ing peat form ing pro -cesses. Stages of de posit de vel op ment were dated by ra dio car bon method. Ac cu mu la tion of the old est sedi ments in thesouth ern ba sin took place in the Late Gla cial. Peat of the north ern ba sin started to ac cu mu late in the At lan tic pe riod.The both parts of the mire ag gre gated proba bly 400 years ago.
Źródło:
Studia Quaternaria; 2008, 25; 23-32
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies