Subtitle:

Errors in methods for estimating forest herb layer production based on states of biomass ; Metodyka

Contributor:

Polska Akademia Nauk. Komitet Ekologiczny

Publisher:

Państwowe Wydawnictwo Naukowe

Place of publishing:

Warszawa

Description:

Pages 47-56 ; 24 cm ; Bibliographical references (page 55) ; Abstract in English ; 24 cm

Type of object:

Journal/Article

Abstract:

The author analyzes methods of indirect estimation of net herb layer production based on states of biomass. Analyses were made for three basic development types of herb layer, i.e. annual plants (I), evergreen plants (II) and biennials and perenniels (III). Parameters affecting the extent of errors in estimating production are defined for the method of maximum state of biomass, difference in maximum and minimum and according to the sum total of differences in states of biomass between the different observation times (Fig. 1, Tab. I). In the above methods errors occur due to the existence in the state of biomass during the given year of matter produced in previous years (for development types II and III). Additional errors in defining production by methods based on state of biomass result from a lack of knowledge of changes taking place in populations of different species between observation times. There is for instance because of no knowledge of elimination, production of newly-formed individuals and production by individuals not eliminated during the given period. This results in discrepancies between production estimated by the above methods and real production (Fig. 2, Tab. II). The author suggests that it is essential to carry out observations on permanent control areas, on which analysis can be made of changes in the state of each individual in a population in order to define the errors in each of the methods of indirect assessment of production. This is necessary as these methods, as being fairly quick, will continue to be applied both for production estimation and to definition of zero resources of ecosystems for herbivores.

References:

Łomnicki A., Bandola E., Jankowska K. 1968 — Modification of the Wiegert-Evans method for estimation of net primary production — Ecology, 49: 147—149.
Odum E. P. 1960 — Organic production and turnover in old field succession — Ecology, 41: 34—49.
Traczyk T. T. 1967 — Propozycja nowego sposobu oceny produkcji runa — Ekol. Pol. B, 13: 241—247.
Wiegert R.G., Evans F.C. 1964 — Primary production and the disappearance of dead vegetation on an old field in Southeastern Michigan — Ecology, 45: 49—63.

Relation:

Wiadomości Ekologiczne

Volume:

20

Issue:

1

Start page:

47

End page:

56

Detailed Resource Type:

Article

Resource Identifier:

oai:rcin.org.pl:147205 ; ISSN 0013-2969

Source:

MiIZ PAN, call no. P.3259 ; kliknij tutaj, żeby przejść

Language:

pol

Language of abstract:

eng

Rights:

Creative Commons Attribution BY 3.0 PL license

Terms of use:

Copyright-protected material. [CC BY 3.0 PL] May be used within the scope specified in Creative Commons Attribution BY 3.0 PL license, full text available at: ; -

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Projects co-financed by:

Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.

Access:

Open