scholarly journals Monitoring population dynamics of the migratory Red-crowned Crane (Grus japonensis) at Shuangtaihekou National Nature Reserve, northeastern China, from 1991 to 2012

Chinese Birds ◽  
2012 ◽  
Vol 3 (3) ◽  
pp. 225-229
Author(s):  
Yuxiang LI ◽  
Changzhan SONG ◽  
Yucheng YANG ◽  
Xiaojing LI ◽  
Fengli LI ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Nature Reserve ◽  
Northeastern China ◽  
National Nature Reserve ◽  
Grus Japonensis

Reinforcement Project and Breeding Cases of Introduced Endangered Red-Crowned Cranes Grus japonensis in Yancheng National Nature Reserve, China

2020 ◽  
Vol 19 (1) ◽  
pp. 93
Author(s):  
Peng Xu ◽  
Hao Chen ◽  
Duoying Cui ◽  
Chunrong Li ◽  
Guoyuan Chen ◽  
...  
Keyword(s):  
Nature Reserve ◽  
National Nature Reserve ◽  
Grus Japonensis

Population dynamics of blue sheepPseudois nayaurin Ningxia Helan Mountain National Nature Reserve, China

2012 ◽  
Vol 61 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Mingchun Zhang ◽  
Xiaoming Wang ◽  
Yiuzhong Ding ◽  
Zejun Zhang ◽  
Zhenghuan Wang ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Nature Reserve ◽  
National Nature Reserve ◽  
Helan Mountain

A new species of Craterium (Myxomycetes, Physaraceae) growing on living grass and new records of the genus from China

Phytotaxa ◽  
2020 ◽  
Vol 443 (1) ◽  
pp. 13-18
Author(s):  
BO ZHANG ◽  
HAIXIA MA ◽  
ZHUANG LI ◽  
YU LI ◽  
XIAO LI
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
New Records ◽  
Northeastern China ◽  
Scanning Electron Micrographs ◽  
Fruiting Bodies ◽  
National Nature Reserve ◽  
First Time ◽  
A New Species ◽  
Scanning Electron

A new species of Craterium (C. subpurpurea) collected in the Changbai Mountain National Nature Reserve, Jilin Province, northeastern China, is described. The fruiting bodies of C. subpurpurea are long cylindrical with distinct ridges, with large spinulose spores (8–10 μm diam.) as well as a persistent purplish pale peridium at the base of the sporotheca. A newly described species, C. aureonuleatum, has been documented in China for the first time, based on material collected from the Shennongjia National Nature Reserve, Hubei Province and the Gexigou National Nature Reserve, Sichuan Province. Craterium aureonuleatum is characterized by a yellowish pseudocolumella at the apex of the sporocarp and a persistent cup-like peridium when mature. Descriptions and scanning electron micrographs for these members of the genus Craterium are provided.

scholarly journals Population dynamics of eight-toothed spruce bark beetle (Ips typographus[L.]) in the area of National Nature Reserve Praděd in 1998–2001

2012 ◽  
Vol 51 (No. 8) ◽  
pp. 359-370 ◽  
Author(s):  
P. Plašil ◽  
P. Cudlín
Keyword(s):  
Population Dynamics ◽  
Bark Beetle ◽  
Nature Reserve ◽  
Ips Typographus ◽  
Present Condition ◽  
National Nature Reserve ◽  
Spruce Bark ◽  
Dead Trees ◽  
Standing Dead ◽  
Research Findings

The paper deals with the study of bionomics and population dynamics of Ips typographus (L.) in the area of the Praděd National Nature Reserve (NNR). Data were collected on the basis of detected feeding marks, beetles caught in traps, and also according to the frequency of occurrence or increase in the number of standing dead trees killed by the bark beetle attack in localities where sanitation felling was not performed. Finally, evaluation of the present condition of forest stand and population dynamics of Ips typographus was carried out. The results showed that the stands currently occur in the stage of disintegration when the role of the bark beetle is irreplaceable. Based on the research findings, the management of the bark beetle was proposed that would enable to achieve so-called regulated disintegration of natural spruce forests in the area of the Praděd NNR.

scholarly journals Red-crowned crane (Grus japonensis) prefers postharvest reed beds during winter period in Yancheng National Nature Reserve

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7682
Author(s):  
Peng Xu ◽  
Yalan Zhang ◽  
Xiaoran Zhang ◽  
Hao Chen ◽  
Changhu Lu
Keyword(s):  
Relative Abundance ◽  
Nature Reserve ◽  
Distribution Patterns ◽  
Tidal Flats ◽  
Food Resources ◽  
Fish Ponds ◽  
Habitat Distribution ◽  
Reed Beds ◽  
National Nature Reserve ◽  
Grus Japonensis

Reed beds represent an important habitat for the survival of birds by providing favorable foraging and reproduction conditions. Reed management, as a traditional agricultural activity, primarily includes water level control and vegetation removal by cutting. Red-crowned crane (Grus japonensis) is one of the most endangered cranes, and their population continues to decline due to habitat loss caused by artificial activities. A lack of research relating to how reed management affects crane habitat distribution patterns throughout the wintering period hinders our ability to offer conservation recommendations. In the present study, we explored the effect of reed management on the habitat distribution patterns and analyzed the food resources of red-crowned crane in the Yancheng National Nature Reserve (YNNR). According to the reed management activities in December, we divided the wintering period into two phases: the preharvest period and the postharvest period. Throughout the wintering period, the number of cranes recorded in the common seepweed (Suaeda glauca) tidal flats remained stable, but cranes were rarely recorded in the smooth cordgrass (Spartina alterniflora) tidal flats and aquaculture fish ponds. The number of cranes, however, showed a noticeable fluctuation in the reed beds during the two periods. Before the reed harvest, only a small proportion of cranes were recorded in the reed beds (relative abundance = 2.9%). However, more cranes (relative abundance = 61.0%) were recorded after the reed harvest. Water was introduced from adjacent rivers and fish ponds to submerge the cut reed beds. Changes in potential animal food resources (items and biomass) might be one of the vital reasons for the preference of cranes to the postharvest reed beds. Our results suggest that traditional reed management in the YNNR could benefit this flagship crane species that winters in the wetland system. However, as reed harvest has been forbidden in the core zone for conservation purposes since 2016, further research is needed to verify whether forbidding the harvest of reeds is reasonable.

Long-term population dynamics of the red deer and European roe deer at the protected and not-protected areas in Mountain Crimea

2017 ◽  
Vol 7 (4) ◽  
pp. 65-72
Author(s):  
V. N. Shmagol' ◽  
V. L. Yarysh ◽  
S. P. Ivanov ◽  
V. I. Maltsev
Keyword(s):  
Population Dynamics ◽  
Protected Areas ◽  
Red Deer ◽  
Nature Reserve ◽  
Roe Deer ◽  
Precipitation Amount ◽  
Annual Precipitation ◽  
Population Number ◽  
The Impact

<p>The long-term population dynamics of the red deer (<em>Cervus elaphus</em> L.) and European roe deer (<em>Capreolus</em> <em>capreolus</em> L.) at the mountain and forest zone of Crimea during 1980-2017 is presented. Fluctuations in numbers of both species are cyclical and partly synchronous. Period of oscillations in the population of red deer is about 25 years, the average duration of the oscillation period of number of roe deer is 12.3 years. During the fluctuations in the number the increasing and fall in population number of the red deer had been as 26-47 %, and roe deer – as 22-34 %. Basing on the dada obtained we have assumed that together with large-scale cycles of fluctuations in population number of both red deer and roe deer the short cycles of fluctuations in the number of these species with period from 3.5 to 7.5 years take place. Significant differences of the parameters of cyclical fluctuations in the number of roe deer at some sites of the Mountainous Crimea: breaches of synchronicity, as well as significant differences in the duration of cycles are revealed. The greatest deviations from the average values of parameters of long-term dynamics of the number of roe deer in Crimea are noted for groups of this species at two protected areas. At the Crimean Nature Reserve the cycle time of fluctuations of the numbers of roe deer was 18 years. At the Karadag Nature Reserve since 1976 we can see an exponential growth in number of roe deer that is continued up to the present time. By 2016 the number of roe deer reached 750 individuals at a density of 437 animals per 1 thousand ha. Peculiarity of dynamics of number of roe deer at some sites proves the existence in the mountain forest of Crimea several relatively isolated groups of deer. We assumed that "island" location of the Crimean populations of red deer and European roe deer, their relatively little number and influence of permanent extreme factors of both natural and anthropogenic origination have contributed to a mechanism of survival of these populations. The elements of such a mechanism include the following features of long-term dynamics of the population: the reduction in the period of cyclic population fluctuations, while maintaining their amplitude and the appearance of additional small cycles, providing more flexible response of the population to the impact of both negative and positive environmental factors. From the totality of the weather conditions for the Crimean population of roe deer the recurring periods of increases and downs in the annual precipitation amount may have relevance. There was a trend of increase in the roe deer population during periods of increasing annual precipitation.</p>

Sign in / Sign up

Export Citation Format

Share Document