Five successive years of rainfall exclusion induce nutritional stress in a mature beech stand

2022 ◽  
Vol 507 ◽  
pp. 119987
Author(s):  
J. Touche ◽  
C. Calvaruso ◽  
P. De Donato ◽  
MP. Turpault
Keyword(s):  
Nutritional Stress ◽  
Beech Stand

Early life nutritional stress affects song learning but not underlying neural circuitry in zebra finches.

2020 ◽  
Vol 134 (3) ◽  
pp. 222-232
Author(s):  
Khulganaa Buyannemekh ◽  
Jessica B. Zito ◽  
Michelle L. Tomaszycki
Keyword(s):  
Early Life ◽  
Nutritional Stress ◽  
Neural Circuitry ◽  
Song Learning ◽  
Zebra Finches

Effect of Nutritional Stress on Allometric Parameters of Non Descript Indian Buck(Capra Hircus) in a Controlled Thermoneutral Condition

2012 ◽  
Vol 3 (7) ◽  
pp. 1-2
Author(s):  
Hari abdul Samad ◽  
◽  
Shyma K latheef ◽  
Anuraj K. S Anuraj K. S ◽  
V. P. Maurya V. P. Maurya
Keyword(s):  
Nutritional Stress ◽  
Capra Hircus

Monitoring of natural regeneration in a mixed deciduous forest

1999 ◽  
Vol 64 ◽  
Author(s):  
K. M. Tabari ◽  
N. Lust
Keyword(s):  
Survival Rate ◽  
Natural Regeneration ◽  
Deciduous Forest ◽  
Seedling Stage ◽  
Permanent Plots ◽  
Soil Conditions ◽  
Growing Seasons ◽  
Humus Layer ◽  
Beech Stand ◽  
Regeneration Phase

Monitoring  of natural regeneration in a dense semi-natural mixed hardwood forest on the  base    of ash, beech, oak and sycamore occurred over 3 years in the Aelmoeseneie  experimental    forest, Belgium. 40 permanent plots (4 m x 5 m) were selected in three  various humus types,    located in an ash stand and in an oak - beech stand. In all plots abundance  and top height of all    broad leaved regenerated species were determined at the end of the growing  seasons 1995 and    1998. In addition, the seedlings which appeared in the plots during 1996  and 1997 were    identified and followed up.    This study proves that in the investigated sites natural regeneration is  drastically poor and    diversity is low, in particular where the humus layer is more acidic (mull  moder) and the litter    layer is thick. No regeneration phase older than the seedling stage (h <  40 cm) is developed on    the different humus types. On average, total number of seedlings in 1995  amounts to 38    units/are in the ash stand and to 63 units/are in the oak - beech stand.  Survival rate over a 3-    year period is 37% and 42% respectively in the ash and oak - beech stands.  Total ingrowth    during the growing seasons 1996 and 1997 is virtually poor, indicating 16  and 8 units/are    respectively in above mentioned stands. Survival rate of occurring  seedlings, as well as the ingrowth of new seedlings are notably different (P < 0.05) according to the soil conditions of the    ash stand. Generally, the low presence of seedlings and the lack of  regeneration older than the    seedling stage reveal that the regeneration development encounters with a  critical problem. The    continuation of this process would likely result in a progressive  succession by the invasive and    the unwanted tree species.

scholarly journals Effect of Competition and Climatic Conditions on the Growth of Beech in the Mixed Pine Beech Stand: Lithuanian Case Study

2020 ◽  
Vol 3 (1) ◽  
pp. 49
Author(s):  
Edgaras Linkevičius ◽  
Gerda Junevičiūtė
Keyword(s):  
Intraspecific Competition ◽  
Tree Species ◽  
Forest Growth ◽  
Competition Effect ◽  
Diameter Increment ◽  
Cart Analysis ◽  
Crown Width ◽  
Beech Stand ◽  
Negative Effect ◽  
The Impact

Climate change and warming will potentially have profound effects on forest growth and yield, especially for pure stands in the near future. Thus, increased attention has been paid to mixed stands, e.g., pine and beech mixtures. However, the interaction of tree species growing in mixtures still remains unknown. Thus, the aim of this study was to investigate the impact of the interspecific and intraspecific competition to diameter, height, and crown width of pine and beech trees growing in mixtures, as well as to evaluate the impact of climatic indicators to the beech radial diameter increment. The data was collected in 2017 at the mixed mature pine beech double layer stand, located in the western part of Lithuania. The sample plot of 1.2 hectare was established and tree species, diameter at the breast height, tree height, height-to-crown base, height-to-crown width, and position were measured for all 836 trees. Additionally, a representative sample of radial diameter increments were estimated only for the beech trees by taking out core discs at the height of 1 m when the stand was partially cut. Competition analysis was based on the distance-dependent competition index, which was further based on crown parameters. Climatic effect was evaluated using classification and regression tree (CART) analysis. We found almost no interspecific competition effect to diameter, height, or crown width for both tree species growing in the first layer. However, it had an effect on beeches growing in the second layer. The intraspecific competition effect was important for pine and beech trees, showing a negative effect for both of them. Our results show the possible coexistence of these tree species due to niche differentiation. An analysis of climatic indicators from 1991–2005 revealed that precipitation from February–May of the current vegetation year and mean temperatures from July to September expressed radial diameter increment effects for beech trees. Low temperatures during March and April, as well as high precipitation during January, had a negative effect on beech radial increments. From 2006–2016, the highest effect on radial diameter increments was the mean temperatures from July to September, as well as the precipitation in January of the current year. From 1991–2016, the highest effect on radial diameter increments was the temperature from July to September 1991–2016 and the precipitation in June 1991–2016. Generally, cool temperatures and higher precipitation in June had a positive effect on beech radial increments. Therefore, our results show a sensitivity to high temperatures and droughts during summer amid Lithuanian’s growth conditions.

Can pollen supplementation mitigate the impact of nutritional stress on honey bee colonies?

2021 ◽  
pp. 1-9
Author(s):  
Belén Branchiccela ◽  
Loreley Castelli ◽  
Sebastián Díaz-Cetti ◽  
Ciro Invernizzi ◽  
Yamandú Mendoza ◽  
...  
Keyword(s):  
Honey Bee ◽  
Nutritional Stress ◽  
The Impact ◽  
Bee Colonies

Ginsenoside Rg1 protects H9c2 cells against nutritional stress‐induced injury via aldolase /AMPK/PINK1 signalling

2019 ◽  
Vol 120 (10) ◽  
pp. 18388-18397 ◽  
Author(s):  
ZhiMeng Xu ◽  
ChengBin Li ◽  
QingLing Liu ◽  
Hua Yang ◽  
Ping Li
Keyword(s):  
Nutritional Stress ◽  
Ginsenoside Rg1 ◽  
H9c2 Cells

Variation in δ 13 C and δ 15 N values of mothers and their calves across southern right whale nursery grounds: The effects of nutritional stress?

2021 ◽  
Author(s):  
Emma L. Carroll ◽  
Glenn Dunshea ◽  
Paulo H. Ott ◽  
Luciano O. Valenzuela ◽  
C. Scott Baker ◽  
...  
Keyword(s):  
Nutritional Stress ◽  
Nursery Grounds ◽  
Right Whale

Relationship of secondary metabolism to growth in oregano (Origanum vulgare L.) shoot cultures under nutritional stress

2009 ◽  
Vol 65 (1) ◽  
pp. 54-62 ◽  
Author(s):  
V LATTANZIO ◽  
A CARDINALI ◽  
C RUTA ◽  
I FORTUNATO ◽  
V LATTANZIO ◽  
...  
Keyword(s):  
Secondary Metabolism ◽  
Nutritional Stress ◽  
Shoot Cultures ◽  
Origanum Vulgare ◽  
Relationship Of
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