Temat: biogeochemical - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Kształtowanie krajobrazu rolniczego a polityka leśna państwa
The management of agricultural landscape and the national policy on forests
Autorzy:: Ryszkowski, L.
Bałazy, S.
Powiązania:: https://bibliotekanauki.pl/articles/1178278.pdf
Data publikacji:: 2003
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: polityka lesna
krajobraz rolniczy
Polska
zadrzewienia
ksztaltowanie krajobrazu
agricultural landscape management
forest policy
augmentation of forest cover
afforestation
mid−field woodlots
biogeochemical barriers
sustainable development
integration
Opis:: The National Policy on Forests and the National Programme for the Augmentation of Forest Cover indicate regional needs, possibilities, legal and financial principles of afforestations as the most important elements of the improvement and maintenance of a good state of the country's environment. The documents put emphasis on the need for the establishment and restoration of afforestations between fields, however, neither the guidelines for their legal and administrative status nor sources of financing have been indicated. In many regions of the country, the large−scale afforestation are almost impossible, because high−quality soils are under agricultural production and the local communities lack the alternative means of living. Thus, the mid−field afforestations of a linear or small−surface type could be the only elements differentiating the landscape structure and acting as biogeochemical barriers. Their network perform the same complementary protective functions as forests or other semi−natural ecosystems. With a view to economising expenditures and intensifying effects aiming at the environment protection it is necessary to closely integrate the countryside environmental programmes including the establishment of biogeochemical barriers and afforestations. The principles of such integration and co−ordination of pro−ecological programmes of the landscape structure management should be laid down under a separate research project.
Źródło:: Sylwan; 2003, 147, 10; 82-90
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Afforestations structure in the context of requirements for biogeochemical barriers in an agricultural catchment
Struktura zadrzewień w kontekście zapotrzebowania na bariery biogeochemiczne w zlewni o charakterze rolniczym
Autorzy:: Szyszkiewicz-Golis, M.
Powiązania:: https://bibliotekanauki.pl/articles/85718.pdf
Data publikacji:: 2004
Wydawca:: Polska Asocjacja Ekologii Krajobrazu
Tematy:: afforestation structure
biogeochemical barrier
agricultural catchment
Directive 91-676-EEC
Wyskoc catchment
Koscian Obra Canal
Lake Morka catchment
landscape process
protection level
Źródło:: Problemy Ekologii Krajobrazu; 2004, 13
1899-3850
Pojawia się w:: Problemy Ekologii Krajobrazu
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Ecohydrodynamic model of the Baltic Sea. Part 1. Description of the ProDeMo model
Autorzy:: Oldakowski, B.
Kowalewski, M.
Jedrasik, J.
Szymelfenig, M.
Powiązania:: https://bibliotekanauki.pl/articles/49157.pdf
Data publikacji:: 2005
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: hydrodynamic-ecological model
nutrient
ecohydrodynamic modelling
biogeochemical process
subregion
ProDeMo model
Baltic ecosystem
Baltic Sea
Gdansk Gulf
Opis:: The ProDeMo (Production and Destruction of Organic Matter Model), a 3D coupled hydrodynamic-ecological model, was formulated and applied to the whole Baltic Sea and the subregion of the Gulf of Gdańsk. It describes nutrient cycles (phosphorus, nitrogen, silicon) through the food web with 15 state variables, oxygen conditions and the parameterisation of water-sediment interactions. The present version of the model takes two groups of phytoplankton – diatoms and non-diatoms – as well as zooplankton into consideration. It covers the flow of matter and energy in the sea, including river discharges and atmospheric deposition. Numerical applications are embedded on a 1 NMgri d for the Gulf of Gdańsk and a 5 NMgri d for the Baltic Sea. Since the model results largely concur with observations, the model can be regarded as a reliable tool for analysing the behaviour of the Baltic ecosystem. Some examples of the spatial-temporal variability of the most important biological and chemical parameters are presented. The model results are compared with those of other modelling research in the Baltic Sea. Both the ProDeMo model algorithm and its computing procedures need to be further developed. The next version should therefore enable more phytoplankton groups to be defined, for example cyanobacteria, which are able to take up molecular nitrogen from the atmosphere (nitrogen fixation). Additionally, the sediment phase should be divided into active and non-active layers.
Źródło:: Oceanologia; 2005, 47, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Autorzy:: Balinski, A
Powiązania:: https://bibliotekanauki.pl/articles/20277.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: brachiopod
brachiopod response
paleontology
Early-Middle Frasnian
Frasnian
biogeochemical perturbation
Southern Poland
Polska
carbonate shelf
Brachiopoda
Flabellulirostrum
Thomasaria
carbon isotope
diversity dynamics
Opis:: The brachiopod faunas from deposits recording the Early–Middle Frasnian transition of Poland are poorly known. The present report describes these faunas that were recovered from Wietrznia and Kostomłoty (Holy Cross Mountains) and Dębnik (Silesian−Cracow Upland) regions positioned on the southern Polish carbonate shelf. The brachiopod distribution was analysed relative to a significant δ¹³C excursion, referred recently to as Palmatolepis punctata Event. The sporadic occurrence of brachiopods at Dębnik makes it difficult to analyse the biotic response to this geochemical anomaly. However, higher brachiopod frequency in the topmost part of the section coincides with a gradual decrease of δ¹³C down to the Frasnian background values. At two studied sections at Wietrznia the greatest taxonomic diversity and abundance of brachiopods (Flabellulirostrum–Coeloterorhynchus assemblage) are confined to the Palmatolepis transitans Zone. In the following Pa. punctata Zone brachiopods are rare (Biernatella lentiformis assemblage) or absent, which suggests a serious deterioration of the environmental conditions linked probably with periods of benthic anoxia−dysoxia and oligotrophic conditions in the basin. In two Kostomłoty sections brachiopods faunas of this age are members of the mostly monospecific rhynchonellid−dominated Phlogoiderhynchus polonicus assemblage which inhabited deeper−water environments characteristic of intrashelf oxygen−depleted basins of ŁysogóryKostomłoty region. In some horizons large shells of P. polonicus were frequently colonised by discinoid Romerella? sp. Among 28 species described in this report new forms include: Flabellulirostrum kielcensis sp. nov., F. rackii sp. nov., and Thomasaria ventosa sp. nov.
Źródło:: Acta Palaeontologica Polonica; 2006, 51, 4; 647-678
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Experiments on wave motion and suspended sediment concentration at Nang Hai, Can Gio mangrove forest, Southern Vietnam
Autorzy:: Hong Phuoc, V.L.
Massel, S.R.
Powiązania:: https://bibliotekanauki.pl/articles/47937.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: subtropical zone
marine environment
trophodynamic process
Vietnam
mangrove forest
biogeochemical process
concentration
Can Gio area
wave motion
suspended sediment
Opis:: Biogeochemical and trophodynamic processes as well as hydrodynamic factors play a major role in the structure and function of mangrove ecosystems. This study outlines field experiments on wave motion and suspended sediment concentration carried out at Nang Hai, Can Gio mangrove forest, Southern Vietnam. Pressure sensors were used to measure sea surface elevation, and Optical Backscatter Sensors (OBS) were applied to detect infrared (IR) radiation scattered from suspended particles in order to measure turbidity and suspended sediment concentrations. The experimental results indicate that most of the energy is dissipated inside the mangrove forest as a result of wave-trunk interactions and wave breaking. The suspended sediment concentration depends on wave intensity and tidal current velocity. Wave action is one of the main factors forcing sediment transport and coastal erosion at the study site; even the wave field at the study site is not so strong. The establishment of mangrove vegetation can encourage the deposition of sediment, or at least the retention of the flood-tide sediment influx.
Źródło:: Oceanologia; 2006, 48, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Phosphorus runoff from small agricultural catchments under different land use intensity
Straty fosforu z malych zlewni rolniczych o roznej intensywnosci uzytkowania
Autorzy:: Skwierawski, A
Sobczynska-Wojcik, K.
Rafalowska, M.
Powiązania:: https://bibliotekanauki.pl/articles/15013.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: phosphorus
biogenic substance
migration
water flow
agricultural catchment
biogeochemical barrier
land use intensity
small agricultural catchment
Opis:: The study was carried out in the hydrologic year 2006 and comprised two small agricultural catchments in the Masurian Lakeland. Both catchments possessed very large water retention potential (presence of buffer zones and surface waters in the catchments) but they differed in the intensity of agricultural production. The study has demonstrated that the concentration of phosphorus in the surface waters flowing from the catchments ranged from 0.12 to 0.43 mg⋅dm-3. The catchments were characterised by low indices of water overland flow (0.32-1.67 dm3⋅s-1⋅km-2), which was a decisive factor shaping the runoff of phosphorus (from 0.013 to 0.060 kg⋅ha-1⋅year-1. A subcatchment dewatered by a pipe drain system, which was used for comparison, had a water flow of 3.54 dm3⋅s-1⋅km-2 and exported much more phosphorus with its surface waters (0.39 kg⋅ha-1⋅year-1). The results obtained during our study emphasise an important role played by small landscape water retention elements in both catchments and the efficiency of buffer zones at a contact of water bodies and fields in reducing the runoff of biogenic substances, especially when agricultural production carried out on a given catchment is intensive.
Badania prowadzono w roku hydrologicznym 2006, w dwóch małych zlewniach rolniczych położonych w obrębie Pojezierza Mazurskiego. Badane zlewnie charakteryzowały się dużymi zdolnościami retencyjnymi (obecność stref buforowych i wód powierzchniowych w zlewni) oraz zróżnicowanym poziomem intensywności rolniczego użytkowania. Wykazano, że koncentracja fosforu w wodach odpływających z badanych zlewni rolniczych kształtowała się w zakresie 0,12+0,43 mg·dm-3. Zlewnie charakteryzowały się niskimi wskaźnikami odpływu wody (0,32+1,67 dm3·s-1·km-2), co w największym stopniu wpłynęło na odpływ fosforu, kształtujący się na poziomie od 0,013 do 0,060 kg·ha-1·rok-1. W porównawczej zlewni drenarskiej, o wskaźniku odpływu 3,54 dm3 - s-1 - km-2, wykazano wielokrotnie wyższy eksport fosforu z wodami — 0,39 kg·ha-1·rok-1. Uzyskane wartości wskazują na rolę małej retencji krajobrazowej w badanych zlewniach oraz skuteczność stref buforowych na styku wód i pól uprawnych, ograniczających odpływ biogenów, zwłaszcza w warunkach intensywnej produkcji rolniczej na obszarze zlewni.
Źródło:: Journal of Elementology; 2008, 13, 4; 637-646
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Soluble forms of zinc in profiles of selected types of arable soils
Rozpuszczalne formy cynku w profilach wybranych typow gleb uzytkowanych rolniczo
Autorzy:: Domanska, J
Powiązania:: https://bibliotekanauki.pl/articles/14241.pdf
Data publikacji:: 2009
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: arable soil
soil
soil type
soil profile
zinc
soluble form
total content
brown soil
black earth
rendzina soil
peat soil
podzolic soil
biological accumulation
biogeochemical process
Opis:: The research was carried out on arable soils of the region of Lublin. The aim of the study was to determine the content of Zn extractable in 1 M HCl⋅dm-3 in profiles of selected types of soils and the total content of Zn (measured in aqua regia) in soil samples from the accumulative layer 0-20 cm of the soils. The investigations included 8 morphological types of soils: Rendzic Leptosols (typical rendzinas), Rendzic Leptosols (humic rendzinas), Haplic Phaeozems, Calcaric Cambisols, Haplic Luvisols, Cambic Arenosols, Haplic Podzols, Eutri-Terric Histosols. The content of zinc (Zn) was measured by Atomic Absorption Spectrometry (AAS). In mineral soils the highest content of total Zn was found in rendzinas (48.0-55.8 mg⋅kg-1 DM) and the lowest one appeared in rusty soil and in podzolic soil – about 13 mg Zn⋅kg-1 each, at average 24.5 mg⋅kg-1. Average concentration of available forms of zinc was 5.2 mg Zn⋅kg-1. The amount of this element in soils was from 2.0 mg Zn⋅kg-1 in the level Cca of typical rendzinas to 17.0 mg Zn⋅kg-1 in the accumulative level of peat soil. In most profiles the highest concentration of soluble form of Zn was present in the accumulative layer and was usually decreasing deeper in the profile. The distribution of Zn in profiles was shaped by the biological accumulation of this element in the humus horizon and natural biogeochemical processes.
Badania przeprowadzono na glebach użytków rolnych Lubelszczyzny. Celem badań było określenie zawartości cynku przyswajalnego (po ekstrakcji próbek 1 mol HCl⋅dm-3) w profilach wybranych typów gleb oraz jego zawartości ogólnej w próbkach z poziomu akumulacyjnego 0-20 cm (po ekstrakcji w wodzie królewskiej). Badaniami objęto 8 typów gleb, takich jak: rędzina właściwa, rędzina czarnoziemna, czarnoziem zdegradowany, gleba brunatna, gleba płowa, gleba rdzawa właściwa, gleba bielicowa właściwa oraz gleba torfowa. Stężenie cynku w przesączach glebowych oznaczono za pomocą spektrofotometru absorpcji atomowej (ASA). W glebach mineralnych najwyższą zawartość Zn ogółem stwierdzono w rędzinach (48,0-55,8 mg⋅kg-1 s.m.), najniższą zaś w glebie rdzawej i bielicowej – ok. 13 mg Zn⋅kg-1, średnio 24,5 mg⋅kg-1. Średnia zawartość cynku przyswajalnego wynosiła 5,2 mg Zn⋅kg-1. Zawartość tego składnika wahała się od 2,0 mg Zn⋅kg-1 w poziomie Cca rędziny właściwej do 17,0 mg Zn⋅kg-1 w poziomie akumulacyjnym gleby torfowej. W większości profili zawartość rozpuszczalnej formy Zn jest na ogół zdecydowanie wyższa w poziomie orno-próchnicznym i maleje wraz z głębokością. Takie rozmieszczenie cynku w profilach zostało spowodowane głównie akumulacją biologiczną w poziomie próchnicznym oraz naturalnymi procesami biogeochemicznymi.
Źródło:: Journal of Elementology; 2009, 14, 1; 55-62
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Biogeochemical alteration of the benthic environment by the zebra mussel Dreissena polymorpha (Pallas)
Autorzy:: Zaiko, A.
Paskauskas, R.
Krevs, A.
Powiązania:: https://bibliotekanauki.pl/articles/47856.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
Curonian Lagoon
Dreissena polymorpha
benthic macroinvertebrate
biogeochemical alteration
ecosystem
mineralization
nitrogen
nutrient
oxygen consumption
phosphorus
sediment
shell
zebra mussel
Opis:: The aim of this study was to verify whether the biogeochemical features (e.g. concentration of nutrients, oxygen consumption, mineralization rate, Eh) of sediments changed by the zebra mussel or its shell deposits differ from those in the ambient soft bottom, and how these differences are related to the structure of benthic macroinvertebrates. In 2006 three sampling sessions were carried out in the Curonian Lagoon, SE Baltic Sea, at three pre-defined sites, corresponding to different bottom types: zebra mussel bed, zebra mussel shell deposits and bare soft sediments. Similarity analysis of biogeochemical parameters indicated that bottom sediments covered with zebra mussel shell deposits were rather distinct from the other bottom types because of the lowest total organic matter mineralization rate and highest organic carbon, total phosphorus and total nitrogen content. The parameters measured in the zebra mussel bed did not deviate conspicuously from the values observed in bare bottoms, except for the higher rate of oxygen consumption in the upper sediment layer. Unsuitable anoxic conditions on the one hand and the ‘attractive’ shelters provided by zebra mussels on the other hand may promote the epifaunal life style in the habitats formed by dense zebra mussel clumps.
Źródło:: Oceanologia; 2010, 52, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Udział mikroorganizmów w przebiegu procesów biogeochemicznych w geologicznych środowiskach przypowierzchniowych. Częoeć I - mikroorganizmy tlenowe
Participation of microorganisms in biogeochemical processes in geological near-surface environments. Part I - Aerobic microorganisms
Autorzy:: Wolicka, D.
Powiązania:: https://bibliotekanauki.pl/articles/2074735.pdf
Data publikacji:: 2010
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: mikroorganizmy tlenowe
procesy biogeochemiczne i krystalizacja minerałów
aerobic microorganisms
biogeochemical processes and crystallization of minerals
Opis:: Microorganisms activity have large influence on composition of minerals and rocks due to biogeochemical processes in the lithosphere weathering zone. In each environment specific autochthonous microorganisms occur and knowledge of their activity and certain biochemical processes is very important in understanding the geochemical cycles of elements, minerals and organic compounds. Physical and chemical conditions of environment strongly influence the composition of bacterial communities. Depending on their properties, the activity of one group of microorganisms, may affect the chemical reactions on significant way and can moderate the direction of biogeochemical processes. The paper is focused on the role of aerobic microbial communities and products of their metabolism in biogeochemical conditions at the weathered zone.
Źródło:: Przegląd Geologiczny; 2010, 58, 10; 1010-1013
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Udział mikroorganizmów w przebiegu procesów biogeochemicznych w geologicznych środowiskach przypowierzchniowych. Część II - mikroorganizmy beztlenowe
Participation of microorganisms in biogeochemical processes in geological near-surface environment.
Autorzy:: Wolicka, D.
Powiązania:: https://bibliotekanauki.pl/articles/2074728.pdf
Data publikacji:: 2010
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: mikroorganizmy beztlenowe
procesy biogeochemiczne
minerały
anaerobic microorganisms
biogeochemical processes
mineral formation
Opis:: Microorganisms play key roles in the biosphere, particularly in the areas of element biotransformations and biogeochemical cycling, mineral transformations, decomposition, bioweathering, and soil and sediment formation. Direct and indirect physical, chemical and biochemical mechanisms are involved in mineral biotransformation by microbes. The role of anaerobic microorganisms and influence of their activity products on geological environmental condition in the weathering zone of lithosphere is discussed. The most important anaerobic microorganisms are sulphate-reducing bacteria (SRB) and methanogenic Archaea. These groups of microorganisms play significant role in biodegradation of organic matter and participate in formation of different kind of mineral phases e.g. carbonates and metal sulphides.
Źródło:: Przegląd Geologiczny; 2010, 58, 11; 1098-1102
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: PO4 release at the sediment surface under anoxic conditions: a contribution to the eutrophication of the Baltic Sea?
Autorzy:: Schneider, B.
Powiązania:: https://bibliotekanauki.pl/articles/49162.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: anoxia
biogeochemical condition
carbon dioxide
deep water
dissolved inorganic nitrogen
eutrophication
hydrogen sulphide
mineralization
nutrient concentration
oxygen
phosphate
sediment
Opis:: The vertical profiles of phosphate, total CO2 and oxygen/hydrogen sulphide were determined in the deep water of the Gotland Sea during March 2003 to July 2006 with a temporal resolution of 2–3 months. This time span included the shift from anoxic to oxic conditions resulting from a water renewal event, as well as the transition back to anoxic waters during the subsequent two-year stagnation period. The data from depths below 150 m were used to identify and quantify phosphate release and removal processes. The relationship between the total CO2 generated by mineralization (CT1 min) and the PO4 concentrations indicated that the initial decrease in the phosphate concentrations after the inflow of oxygen-rich water was mainly a dilution effect. Only about one third of the PO4 removal was a consequence of the precipitation of insoluble iron-3-hydroxo-phosphates (Fe-P), which occurred slowly at the sediment surface under oxic conditions. From the CT1 min/PO4 ratios it was also concluded that the formation of Fe-P was reversed during the later phase of the stagnation, when the redoxcline approached a depth of 150 m. A phosphate mass balance was performed for four deep water sub-layers in order to quantify the dissolution of Fe-P during the stagnation period and thus to estimate the amount of Fe-P deposited during the last inflow of oxygen-rich water. A value of about 50 mmol-P m−2 was found, which refers to the specific biogeochemical conditions during the change from anoxic to oxic conditions that preceded the stagnation period.
Źródło:: Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Processes regulating pCO2 in the surface waters of the Central Eastern Gotland Sea: a model study
Autorzy:: Kuznetsov, I.
Neumann, T.
Schneider, B.
Yakushev, E.
Powiązania:: https://bibliotekanauki.pl/articles/48971.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
biogeochemical modelling
brackish water
carbon dioxide
Cyanoprokaryota
detritus
ecological status
ecosystem
ERGOM model
nitrogen fixation
seasonal change
surface water
water exchange
Opis:: This work presents a one-dimensional simulation of the seasonal changes in CO2 partial pressure (pCO2). The results of the model were constrained using data from observations, which improved the model’s ability to estimate nitrogen fixation in the central Baltic Sea and allowed the impact of nitrogen fixation on the ecological state of the Baltic Sea to be studied. The model used here is the public domain water-column model GOTM (General Ocean Turbulence Model), which in this study was coupled with a modifed Baltic Sea ecosystem model, ERGOM (The Baltic Sea Research Institute’s ecosystem model). To estimate nitrogen fixation rates in the Gotland Sea, the ERGOM model was modified by including an additional cyanobacteria group able to fix nitrogen from March to June. Furthermore, the model was extended by a simple CO2 cycle. Variable C:P and N:P ratios, controlled by phosphate concentrations in ambient water, were used to represent cyanobacteria, detritus and sediment detritus. This approach improved the model’s ability to reproduce sea-surface phosphate and pCO2 dynamics. The resulting nitrogen fixation rates in 2005 for the two simulations, with and without the additional cyanobacteria group, were 259 and 278 mmol N m−2 year−1 respectively.
Źródło:: Oceanologia; 2011, 53, 3
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: In vivo quantification of diatom redox metabolism provides insights into sensing nitrogen stress in the marine environment
Autorzy:: Rosenwasser, S.
Graff, S.
Schatz, D.
Levin, Y.
Gabashvili, A.
Tzfadia, O.
Feldmesser, E.
Vardi, A.
Powiązania:: https://bibliotekanauki.pl/articles/80708.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
diatom
Phaeodactylum tricornutum
photosynthesis
biogeochemical cycle
oxidative stress
proteome
marine environment
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Influence of the parametrization of water optical properties on the modelled sea surface temperature in the Baltic Sea
Autorzy:: Stramska, M.
Zuzewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/49070.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
sea surface temperature
parametrization
optical property
water column
biogeochemical modelling
light propagation
vertical distribution
spectral range
photosynthetically available radiation
Źródło:: Oceanologia; 2013, 55, 1
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Heavy metals in circulation biogeochemical
Autorzy:: Cyraniak, Emil
Draszawka – Bołzan, Beata
Powiązania:: https://bibliotekanauki.pl/articles/1194079.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: biogeochemical
circulation
heavy metals
Opis:: Heavy metals can come from two types of sources: natural and anthropogenic. Natural origin of heavy metals associated with: volcanic eruptions, weathering of rocks, processes soil - creative, forest fires or evaporation of the oceans. Anthropogenic sources of pollution these elements is primarily the burning of fuels, both in power and heating plants and power plants as well as regional and local municipal boiler houses, as well as in the home. In addition to the natural environment gets heavy metals as a result of non-ferrous metals and iron, waste incineration and transport. The rapid development of technology and the changes that are occurring in the world today largely affect on the environment. One of the primary sources of pollution of the biosphere are industrial plants, which emit both gaseous substances (eg. Carbon monoxide, sulfur and nitrogen) and dust, containing all sorts of toxic substances. For the serious consequences of the development of civilization and industry should be spread include heavy metals [6]. Included in the atmosphere, dust and heavy metals fall to the ground parts of plants and enters the soil. Shall be collected by the roots of plants or animals grazing on the roads and thus incorporated into the food chain. These elements are not biodegradable.
Źródło:: World Scientific News; 2014, 6; 10-16
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "biogeochemical" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język