Temat: chlorophyll a concentration - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The influence of biotic factors on phytoplankton pigment composition and resources in Baltic ecosystems: new analytical results
Autorzy:: Ston-Egiert, J.
Lotocka, M.
Ostrowska, M.
Kosakowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/48253.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: chlorophyll
chlorophyll a
concentration
carotenoid
photosynthetic carotenoid
photoprotecting carotenoid
pigment
phytoplankton biomass
Baltic Sea
biotic factor
Baltic ecosystem
Źródło:: Oceanologia; 2010, 52, 1; 101-125
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Influence of non-photosynthetic pigments on the measured quantum yield of photosynthesis
Autorzy:: Ficek, D.
Majchrowski, R.
Ostrowska, M.
Wozniak, B.
Powiązania:: https://bibliotekanauki.pl/articles/47492.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: marine phytoplankton
pigment
quantum yield
chlorophyll a
phytoplankton pigment
bio-optical modelling
concentration
sea
water column
photosynthesis
Opis:: The aim of this work was to assess the effect of non-photosynthetic (photoprotecting) pigments on the measured quantum yield of photosynthesis in the sea. The energy absorbed by these pigments is not utilised during photosynthesis. As a result, the measured yield of this process, i.e. the photosynthetic yield referred to the total energy absorbed by all phytoplankton pigments, is less than the actual quantum yield of photosynthesis, i.e. the yield referred to the energy absorbed by photosynthetic pigments only. The model of the absorption properties of marine phytoplankton derived by the authors (see Woźniak et al. 2000, this volume) was employed to determine the relevant contributions of photosynthetic and non-photosynthetic pigments to the total energy absorbed by phytoplankton in different trophic types of seas and at different depths in the water column. On this basis the non-photosynthetic pigment absorption factor fa, which describes the relation between the true and measured quantum yields of photosynthesis, could be characterised. The analysis shows that fa varies in value from 0.33 to 1, and that it depends on the trophic type of sea and the depth in the water column. The values of this factor are usually highest in eutrophic waters and decrease as waters become progressively more oligotrophic. It is also characteristic of fa that it increases with increasing depth in the sea.
Źródło:: Oceanologia; 2000, 42, 2
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Mathematical description of vertical algal accessory pigment distributions in oceans – a brief presentation
Autorzy:: Majchrowski, R.
Ostrowska, M.
Powiązania:: https://bibliotekanauki.pl/articles/49083.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: accessory pigment
bio-optical modelling
chlorophyll a
concentration
investigation
marine alga
mathematical description
ocean
optical depth
photoprotecting pigment
photosynthetic apparatus
photosynthetic pigment
pigment
sea
trophic index
vertical distribution
water
Opis:: A straightforward mathematical expression for describing the vertical distributions of algal accessory pigments in oceans is presented. To this end ca 1500 empirical datasets of accessory pigment depth profiles gathered during some 200 research cruises in different oceanic regions were analysed. These data were retrieved from the bio-optical databases of SeaBASS and U.S. JGOFS published on the Internet. The statistical relationships were analysed between the concentrations of accessory pigments and the trophic indices of waters, as measured by the surface concentrations of chlorophyll a and the optical depths in different oceanic regions. A mathematical expression was established and formulas based on it were found, approximating the relations between the vertical distributions of accessory pigments and the chlorophyll a concentration. These formulas can be used to model the species composition of algae in different parts of the ocean and in remote sensing algorithms.
Źródło:: Oceanologia; 2009, 51, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "chlorophyll a concentration" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język