scholarly journals Fire response of the endangered Pinus culminicola stands after 18 years in Cerro El Potosí, northeast Mexico

2018 ◽  
Vol 26 (3) ◽  
pp. e015
Author(s):  
José R. Arévalo ◽  
Eduardo Estrada ◽  
Juan A. Encina ◽  
José A. Villareal ◽  
Job R. Escobedo ◽  
...  

Aim of the study: To analyze the impact of the 1998 wildfire on dwarf pine (Pinus culminicola) population stands 18 years after the fire.Area of study: Cerro el Potosí, Nuevo León (México)Material and methods: We measured regeneration, biovolume of individuals, diversity and species composition in unburned and burned plots randomly selected in the area.Main results: Recovery was very slow, with limited dense natural regeneration and very slow growth. Significant differences between control and burned plots were found with respect to regeneration, species composition, evenness and soil nutrients, suggesting that fire could promote natural regeneration and biodiversity in these communities.Research highlights: Management efforts are necessary to maintain a natural fire regime and ensure grazing exclusion in order to favor the conservation of the community dominated by this rare species P. culminicola.

2019 ◽  
Vol 55 (7) ◽  
pp. 5751-5769 ◽  
Author(s):  
Gabrielle F. S. Boisramé ◽  
Sally E. Thompson ◽  
Christina (Naomi) Tague ◽  
Scott L. Stephens

Fire Ecology ◽  
2008 ◽  
Vol 4 (2) ◽  
pp. 115-132 ◽  
Author(s):  
Richard L. Hutto ◽  
Courtney J. Conway ◽  
Victoria A. Saab ◽  
Jeffrey R. Walters

2016 ◽  
Vol 88 (suppl 1) ◽  
pp. 589-597 ◽  
Author(s):  
LEANDRO V. FERREIRA ◽  
PIA PAROLIN ◽  
DARLEY C.L. MATOS ◽  
DENISE A. CUNHA ◽  
PRISCILLA P. CHAVES ◽  
...  

ABSTRACT The introduction of exotic species is considered as one of the major causes of biodiversity loss. The National Forest of Carajás is one of the largest mineral provinces in the world. Mining activities caused changes of the natural habitats, leaving degraded areas after the mineral exploitation. One of the mining areas within FLONA Carajás was used for the extraction of gold. In the process of exploitation, a huge depression was formed by the removal of soil which was mounded up nearby. To prevent soil erosion of these mounds, an exotic grass, Urochloa decumbens (Stapf) R.D.Webster (Poaceae) was planted. The objective of this study was to compare the impact of this non-native grass on species richness and species composition of the natural regeneration in the degraded areas. Four areas were compared, two with and two without presence of U. decumbens. In each area, twenty four 1m²/plots were established. Species richness of the regeneration areas and population sizes were significantly lower in the plots where the exotic grass was present. Our study shows that U. decumbens had a negative effect on species richness and population density, and its presence changed the species composition and distribution of life forms of the natural regeneration.


Silva Fennica ◽  
2002 ◽  
Vol 36 (1) ◽  
Author(s):  
Yves Bergeron ◽  
Alain Leduc ◽  
Brian Harvey ◽  
Sylvie Gauthier

2011 ◽  
Vol 222 (9) ◽  
pp. 1639-1650 ◽  
Author(s):  
Brean W. Duncan ◽  
John F. Weishampel ◽  
Seth H. Peterson

1988 ◽  
Vol 53 ◽  
Author(s):  
N. Lust

The  study deals with the spontaneous resettlement of a fire area, after  destruction of 600 ha Scots pine forest. The following items have been  examined in particular: the composition of the tree species, the duration of  the regeneration period, the influence of the parent stand, the exposition,  the slope, the treatment, the fire regime and the social differentiation.      The resettlement took place very quickly and over a very short period.  Birch and Scots pine take up 95 % of the stem number. The regeneration result  is precarious, yet mostly good. The parent stand is favourable both to seed  supply and to microclimate, but only over a short distance. The Scots pine  prefers more open and dry areas, whereas birch needs more humidity.     Practice has shown that natural regeneration of Scots pine stands is  possible. The forest treatment, however, is very important. It determines not  only the immediate result of the regeneration, but also the composition and  the structure of the future stand.


Author(s):  
Maximilian Axer ◽  
Sven Martens ◽  
Robert Schlicht ◽  
Sven Wagner

AbstractThe potential utilisation of natural regeneration of European beech (Fagus sylvatica L.) for forest conversion has received little attention to date. Ecological knowledge is necessary to understand and predict successful natural regeneration of beech. The objective of this study was to improve understanding of what drives the occurrence of beech regeneration and, once regeneration is present, what drives its density. In the study, we utilised a forest inventory dataset provided by Sachsenforst, the state forestry service of Saxony, Germany. The dataset was derived from 8725 permanent plots. Zero-altered negative binomial models (ZANB) with spatial random effects were used to analyse factors influencing occurrence and density simultaneously. The results provided by the spatial ZANB models revealed that the probability of the occurrence of beech regeneration is highly dependent on seed availability, i.e. dependent on source trees in close proximity to a plot. The probability of beech regeneration rises with the increasing diameter of a potential seed tree and decreases with increasing distance to the nearest potential seed source. The occurrence of regeneration is affected by overstorey composition and competition exerted by spruce regeneration. Where sites are affected by groundwater or temporary waterlogging, the impact on the occurrence of regeneration is negative. Although distance to the nearest potential seed source has an influence on occurrence, this variable exerts no influence on density. A high regeneration density arises in conjunction with a high beech basal area in the overstorey. Beech regeneration density, but not occurrence, is negatively affected by browsing intensity. These variables can be used to predict the occurrence and density of beech regeneration in space to a high level of precision. The established statistical tool can be used for decision-making when planning forest conversion using natural regeneration.


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