Zobrazeno 1 - 10
of 135
pro vyhledávání: '"ABUNDANCE DYNAMICS"'
Autor:
V. I. Ostrovsky
Publikováno v:
Известия ТИНРО, Vol 202, Iss 4, Pp 810-827 (2023)
A quasi-cyclicity associated with variability of environmental conditions is detected for the regression residuals of the stock-recruitment model for chum salmon Oncorhynchus keta in the Okhotsk district, described by Ricker’s equation. The main fa
Externí odkaz:
https://doaj.org/article/9602933791de4ee7a30b966281a2cab3
Autor:
E. A. Shevlyakov, N. A. Dederer
Publikováno v:
Известия ТИНРО, Vol 202, Iss 2, Pp 369-389 (2022)
Interannual changes of the pink salmon abundance at the western and northeastern coasts of Kamchatka are analyzed. Local stocks with certain patterns of the abundance dynamics are revealed. Contribution of these local groups to the overall reproducti
Externí odkaz:
https://doaj.org/article/7507288eb6724101a821f2f3dc27d5e5
A decrease in the number and the timing shift of the bird arrival in the North-Eastern Baikal Region
Autor:
Alexander A. Ananin
Publikováno v:
Nature Conservation Research: Заповедная наука, Vol 7, Iss 2, Pp 66-80 (2022)
The article deals with the main results of a long-term study of birds in the Barguzin State Nature Biosphere Reserve (Russia). Phenological observations of the bird spring arrival have been carried out from 1938 to 2020. Monitoring of bird communitie
Externí odkaz:
https://doaj.org/article/bec8602ea0b04ad1b207621e4ee95bd9
Autor:
V. I. Ostrovsky
Publikováno v:
Известия ТИНРО, Vol 201, Iss 1, Pp 219-259 (2021)
Choosing of mathematical model for describing of the pacific salmon progeny dependence on the parents abundance is discussed. Results of different approximations are interpreted. The analysis could be useful for forecasting of the pacific salmon stoc
Externí odkaz:
https://doaj.org/article/8ce38128ecae497cb18066be236df0b6
Autor:
V. I. Ostrovsky, A. S. Ponomarev
Publikováno v:
Известия ТИНРО, Vol 200, Iss 3, Pp 605-617 (2020)
Dependence of chum salmon Oncorhynchus keta recruitment (number of mature adults) in Okhotsky district located on the Okhotsk Sea coast on a number of spawners is analyzed for the spawning years of 1983–2014. During this period, the progeny abundan
Externí odkaz:
https://doaj.org/article/0b65cb2484fc4313b88f2c3ebb23c990
Publikováno v:
Российский паразитологический журнал, Vol 12, Iss 4, Pp 50-58 (2020)
The purpose of the research is to study fauna and dispersion of Homoptera attacked Salicaceae at the south-eastern part of Central Asia. Materials and methods. Authors’ longstanding works (during 2008–2018) on research morpho-ecological character
Externí odkaz:
https://doaj.org/article/3450a46b1afa4ef2b1fd99ae70b48f5f
Akademický článek
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Publikováno v:
Applied Water Science, Vol 9, Iss 1, Pp 1-9 (2019)
Abstract A study was undertaken from January to June 2016 with the aim of characterizing the environmental forms of intestinal helminths that are present in some marshy areas in Yaounde. Monthly water samplings were carried out on eight different mar
Externí odkaz:
https://doaj.org/article/f03aa0e81c924a6289f0915ef3d538a8
Autor:
Svetlana M. Zhdanova
Publikováno v:
Трансформация экосистем, Vol 1, Iss 2, Pp 19-29 (2018)
The abundance dynamics, spatial distribution and role of freshwater zebra mussel veligers in the structure of zooplankton were analyzed based on observations in 2012–2016 in Lake Pleshcheyevo (Yaroslavl Region). The mean abundance of larvae in the
Externí odkaz:
https://doaj.org/article/a12dbd6938054527bd996ad0d43eb7d3
Autor:
V. I. Ostrovsky
Publikováno v:
Известия ТИНРО, Vol 194, Iss 3, Pp 54-67 (2018)
Reasons for rapid rise of pink salmon landings in the Sakhalin Bay (Okhotsk Sea) in the early 21 century are analyzed. Dependence of its juveniles and adults numbers on the number of their parents is well described with Ricker equation, and the recru
Externí odkaz:
https://doaj.org/article/b264803c11614b66867bac955d2c6e03