scholarly journals Climatic signal in annual growth variation of silver fir (Abies albaMill.) and spruce (Picea abiesKarst.) from the French Permanent Plot Network (RENECOFOR)

2007 ◽  
Vol 64 (3) ◽  
pp. 333-343 ◽  
Author(s):  
François Lebourgeois
Keyword(s):  
Permanent Plot ◽  
Annual Growth ◽  
Silver Fir ◽  
Climatic Signal ◽  
Growth Variation ◽  
Plot Network

scholarly journals The emergent past: past natural and human disturbances of trees can reduce their present resistance to drought stress

2021 ◽  
Author(s):  
Hans Pretzsch
Keyword(s):  
Drought Stress ◽  
Memory Effect ◽  
Tree Ring ◽  
Tree Growth ◽  
Water Retention ◽  
Annual Growth ◽  
Recent Past ◽  
Ecological Memory ◽  
Growth Variation

AbstractForest tree growth is primarily explained, modelled, and predicted depending on current age or size, environmental conditions, and competitive status in the stand. The accumulated size is commonly used as a proxy for a tree's past development. However, recent studies suggest that antecedent conditions may impact present growth by epigenetic, transcriptional, proteomic, or metabolic changes alongside physiological and structural properties. Here, I analysed the ecological memory effect embedded in the xylem as a tree-ring structure. I used 35 mature Norway spruces (Picea abies (L.) H. Karst.) and 36 European beeches (Fagus sylvatica L.) of the Kranzberg Forest water retention experiment KROOF in South Germany to scrutinise how their past development determines the growth of control plots and plots with 5-year water retention. I hypothesised that the current size and growing conditions determine tree growth and drought stress resistance. Metrics quantifying the trees’ recent and past growth, and correlation and linear mixed models with random effects revealed the following ecological memory effects. (1) For both species, the progressive growth course, low inter-annual growth variation in the long term, and low growth deflections in the recent past increased the growth resistance to drought. (2) The correlation between the past growth metrics and current stress reactions revealed that legacy effects could reach back 5–30 years; I found short- and long-term ecological memory. (3) Parameters of model prediction of the basic model with only size as a predictor of tree growth could be improved. The results suggest differences in the internal stem structure and ring pattern cause-specific differences in the trees' functioning and growth. I conclude that a long-term progressive increase and low variation in ring width may improve water conduction and reduce embolism in both species. Annual growth variation and low growth events in the recent past may have primed the morphology and allocation of the Norway spruce to better resist drought. The strong reduction in current growth, drought resistance by irregular growth, and past growth disturbances reveal a memory effect embedded in the tree ring pattern, suggesting further exploration and consideration in tree monitoring, growth modelling, and silvicultural prescriptions.

scholarly journals Toward a definition of the range of variability of central European mixed Fagus–Abies–Picea forests: the nearly steady-state forest of Lom (Bosnia and Herzegovina)

2011 ◽  
Vol 41 (9) ◽  
pp. 1871-1884 ◽  
Author(s):  
Renzo Motta ◽  
Roberta Berretti ◽  
Daniele Castagneri ◽  
Vojislav Dukić ◽  
Matteo Garbarino ◽  
...  
Keyword(s):  
Bosnia And Herzegovina ◽  
Structural Characteristics ◽  
Abies Alba ◽  
Natural Disturbance ◽  
European Beech ◽  
High Volume ◽  
Permanent Plot ◽  
Small Scale ◽  
Silver Fir ◽  
Gap Size

Knowledge on the range of variability of montane European forests is hampered by limited data on the natural disturbance regime and by the small size of old-growth remnants. We studied the mixed Fagus – Abies – Picea Lom forest reserve (55.8 ha) in Bosnia and Herzegovina at three different scales: a grid of 40 sampling points to describe the structural characteristics and their range of variability, three transects to analyse gap size and gap fraction, and a 1.1 ha permanent plot to reconstruct age structure and disturbance history. The forest is characterized by a high volume of living trees (763 m3·ha–1 in the 55.8 ha core area and 1160 m3·ha–1 in the permanent plot) and of coarse woody debris (327 and 383 m3·ha–1, respectively). The percentages of forest area in canopy and expanded gaps are 19% and 41%, respectively. The median canopy gap size is 76.9 m2 and ranges from 11.1 to 708.0 m2. There are large (up to 120 cm diameter at breast height) and very old trees (441, 432, and 416 years for silver fir ( Abies alba Mill.), Norway spruce ( Picea abies (L.) Karst.), and European beech ( Fagus sylvatica L.), respectively). During the last three centuries, the disturbance patterns have been characterized by single-tree or small group mortality. In central Europe, this forest is at the end of a gradient from forests characterized by intermediate disturbances to those where very small-scale processes predominate.

Structural and floristic diversity of mixed tropical rain forest in New Caledonia: new data from the New Caledonian Plant Inventory and Permanent Plot Network (NC-PIPPN)

2013 ◽  
Vol 17 (3) ◽  
pp. 386-397 ◽  
Author(s):  
Thomas Ibanez ◽  
Jérôme Munzinger ◽  
Gilles Dagostini ◽  
Vanessa Hequet ◽  
Frédéric Rigault ◽  
...  
Keyword(s):  
Rain Forest ◽  
Tropical Rain Forest ◽  
New Caledonia ◽  
Permanent Plot ◽  
Floristic Diversity ◽  
Plant Inventory ◽  
Plot Network

scholarly journals Features of growth and development of Abies alba Mill. seedlings in the conditions of Voronezh (Russia)

2021 ◽  
Vol 875 (1) ◽  
pp. 012010
Author(s):  
S Degtyareva ◽  
V Dorofeeva ◽  
V Shipilova
Keyword(s):  
Growth And Development ◽  
Abies Alba ◽  
Annual Growth ◽  
Forest Steppe ◽  
Silver Fir ◽  
Natural Habitats ◽  
Natural Analogues ◽  
Bud Opening ◽  
The Individual ◽  
The University

Abstract Phenological observations are one of the methods for studying the reaction of introduced species to new conditions and subsequent introduction into regional phytocenoses. This research wants to assess growth and development of Abies alba Mill., currentlyexotic in the Central Black Earth region of Russia. Seeds, obtained from individuals growing in the natural range (the Carpathians) in 1987 were sown in the university nursery. Then five-year-old seedlings were planted in the University arboretum. At the age of 22 the arboretum habitat was inferior to natural analogues. Phenological observations of bud opening and formation of annual growth coincide with the beginning of the growing season in natural plantings. High rates of seed germination (80%), high annual growth rates of seedlings (and transplanted plant) determined final success of silver fir in forest-steppe conditions. Precipitation has a dominant influence on growth and development, as shown by the correlation analysis between climate and growth, despite the fact that the species is drought-resistant in natural habitats. The study emphasizes the factors that control growth and development of silver fir. The use of this method of sowing is ecologically sound, which can further improve the success of species adaptation to the individual conditions of regional phytocenoses.

scholarly journals Macroecology of Australian Tall Eucalypt Forests: Baseline Data from a Continental-Scale Permanent Plot Network

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0137811 ◽  
Author(s):  
Sam W. Wood ◽  
Lynda D. Prior ◽  
Helen C. Stephens ◽  
David M. J. S. Bowman
Keyword(s):  
Permanent Plot ◽  
Baseline Data ◽  
Continental Scale ◽  
Plot Network ◽  
Eucalypt Forests

SELECTED MORPHOMETRIC AND BIOLOGICAL CHARACTERISTICS OF IDE LEUCISCUS IDUS (LINNAEUS, 1758) IN THE LOWER IRTYSH

2017 ◽  
pp. 46-53
Author(s):  
Elizaveta L'vovna Liberman ◽  
Andrey Aleksandrovich Chemagin
Keyword(s):  
Maximum Rate ◽  
Linear Growth ◽  
Age Groups ◽  
Annual Growth ◽  
Recreational Fishing ◽  
Opisthorchis Felineus ◽  
Gonad Maturity ◽  
Study Results ◽  
Leuciscus Idus ◽  
Old Females

Ide Leuciscus idus (Linnaeus, 1758) belongs to Cyprinidae family and is used in commercial and recreational fishing. Ide is an intermediate host of Opisthorchis felineus . In the control catches (summer 2015, the Lower Irtysh, Uvatsky, Tobolsky and Vagaysky regions of Tyumenskaya Oblast’) there were observed species with lengths 11.9-38.1 cm, with a total weight 45-1085 g. Some species aged 9 years old and even older. The maximum rate of linear growth was registered in ide species younger than 3 years old, at this age annual growth made 5 cm. The annual growth of four-year-old females made 5.4 cm, males - 2.8 cm. Females aged 3+ exceeded males in body weight and length. Species at the age 1+…2+ years old added 204.6% in their mass; at the age 2+…3+ years old - 65.3%, at 3+…4+ years old - 29.4%. Gender and gonad maturity were determined in species older than 2+, but not in all species. Among females aged 2+…4+ there were found species with I and II stage of gonad maturity. Females aged 5+ were spawned-out species having VI-II stage of gonad maturity (48%); female species aged 6+ having IV stage of gonad maturity made 33.4%. Among males in the age groups of 2+ and 3+ there were registered species with I stage (38.5 and 20%, respectively) and II stage (61.5 and 80%, respectively) of maturation only. Fatness degree of studied species ranged from 0 to 5. Species aged 2+ had I stage (24% species); in the aged groups the proportion of such species decreased (5+ years old - 7.8%; 6+ years old - 12.1%; 8+ years old - 5.9%); species aged 2-7 had II stage of fatness; proportion of older species also decreased. Species with III and IV stage of fatness were found more often (III stage was observed in 100% of the fish species at the age of 1+). Proportion of species with V stage was minor, it increased with age. According to the analysis of the study results, nutritive base in the basin is found satisfactory for ide growth and development.

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