Population Dynamics of the Wild Daffodil (Narcissus Pseudonarcissus): I. Clonal Growth, Seed Reproduction, Mortality and the Effects of Density

1980 ◽  
Vol 68 (2) ◽  
pp. 607 ◽  
Author(s):  
J. P. Barkham
Keyword(s):  
Population Dynamics ◽  
Clonal Growth ◽  
Seed Reproduction ◽  
Narcissus Pseudonarcissus ◽  
Effects Of Density

Clonal Growth in Typha Latifolia: Population Dynamics and Demography of the Ramets

1985 ◽  
Vol 73 (2) ◽  
pp. 535 ◽  
Author(s):  
Joyce A. Dickerman ◽  
Robert G. Wetzel
Keyword(s):  
Population Dynamics ◽  
Clonal Growth ◽  
Typha Latifolia

Population dynamics of Japanese pink salmon (Oncorhynchus gorbuscha): are recent increases explained by hatchery programs or climatic variations?

2006 ◽  
Vol 63 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Kentaro Morita ◽  
Shoko H Morita ◽  
Masa-aki Fukuwaka
Keyword(s):  
Population Dynamics ◽  
Density Dependence ◽  
Climatic Factors ◽  
Pink Salmon ◽  
Climatic Variation ◽  
Oncorhynchus Gorbuscha ◽  
Pink Salmon Oncorhynchus Gorbuscha ◽  
Climatic Variations ◽  
Mass Release ◽  
Effects Of Density

Hatchery programs involving the mass release of artificially propagated fishes have been implemented worldwide. However, few studies have assessed whether hatchery programs actually increase the net population growth of the target species after accounting for the effects of density dependence and climatic variation. We examined the combined effects of density dependence, climatic variation, and hatchery release on the population dynamics of Japanese pink salmon (Oncorhynchus gorbuscha) from 1969 to 2003. The population trends were more closely linked to climatic factors than to the intensity of the hatchery programs. The estimated contributions of hatchery-released fry to catches during the past decade are small. We concluded that the recent catch increases of Japanese pink salmon could be largely explained by climate change, with increased hatchery releases having little effect.

Population dynamics and clonal growth of Spartocytisus supranubius (Fabaceae), a dominant shrub in the alpine zone of Tenerife, Canary Islands

Plant Ecology ◽  
2006 ◽  
Vol 186 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Tomáš Kyncl ◽  
Jan Suda ◽  
Jan Wild ◽  
Radka Wildová ◽  
Tomáš Herben
Keyword(s):  
Population Dynamics ◽  
Canary Islands ◽  
Clonal Growth ◽  
Alpine Zone

Modelling irruptions and population dynamics of the great spotted woodpecker - joint effects of density and cone crops

Oikos ◽  
2011 ◽  
Vol 120 (7) ◽  
pp. 1065-1075 ◽  
Author(s):  
Andreas Lindén ◽  
Aleksi Lehikoinen ◽  
Tatu Hokkanen ◽  
Risto A. Väisänen
Keyword(s):  
Population Dynamics ◽  
Joint Effects ◽  
Effects Of Density

scholarly journals Population dynamics of two endemic species in Aksu-Zhabagly State Nature Reserve

2021 ◽  
Vol 31 ◽  
pp. 00002
Author(s):  
Vera Cheryomushkina ◽  
Alexey Astashenkov ◽  
Smatula Dzhumanov
Keyword(s):  
Sustainable Development ◽  
Population Dynamics ◽  
Endemic Species ◽  
Nature Reserve ◽  
Good Seed ◽  
The Sustainable Development ◽  
Seed Reproduction ◽  
State Nature Reserve ◽  
State Nature

The structure of Allium pskemense and A. karataviense coenopopulations from the Aksu-Zhabagly State Nature Reserve was described. It was established that the ontogenetic spectrum of coenopopulations is left-sided with a maximum on immature individuals. This is due to good seed reproduction, rapid rates of development at the end of ontogenesis. It was shown that over a 10-year period, there is a gradual aging of the coenopopulation, which is reflected in the shift of the peaks in the spectrum to the young generative (A. pskemense) and virginal (A. karataviense) groups. It was concluded that the sustainable development of coenopopulations will be in the case of a decrease in the number of the phytophages and successful regeneration by seed, which leads to a regular turnover of generations.

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