Short-term dynamics of Quercus ilex advance regeneration in a Pinus nigra plantation after the creation of small canopy gaps

García-Barreda, Sergi; Reyna, Santiago

doi:10.5424/fs/2013222-03553

Cited by 3 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3). The natural establishment rate we recorded in 2014 (54.2 seedlings ha -1 ) is lower than those we estimated from data reported by Pulido and Díaz (2005) in oak woodland (123 seedlings ha -1 year -1 ) and by García-Barreda and Reyna (2013) in gaps of a planted pine forest (120 seedlings ha -1 year -1 ), but higher than that found by Pulido and Díaz (2005) in an oak savanna (2.8 seedlings ha -1 year -1 ). Gómez et al (2003) also found that 98 % of the 1000 experimental seedlings were killed by herbivores, notably wood mice, wild boar, and domestic and wild ungulates.…”

contrasting

confidence: 52%

Predation and aridity slow down the spread of 21-year-old planted woodland islets in restored Mediterranean farmland

et al. 2015

View full text Add to dashboard Cite

Planted woodland islets act as sources of seed that may accelerate woodland development in extensive agricultural landscapes. We assessed a 1-ha plot that was planted with 16 100-m 2 islets of holm oak Quercus ilex subsp. ballota seedlings near Toledo (Spain) in 1993. In spring 2014 we measured (1) acorn predation and (2) seedling emergence from seeded acorns at different distances from and orientations around the islets with half of the acorns protected to prevent predation, (3) survival of emerged seedlings, and (4) natural tree establishment outside of the planted islets. Most (96.9 %) unprotected acorns were removed or predated. Seedling emergence from protected acorns ranged from 42.9 % on the northern side of the islets to 13.2 % on the southern side, suggesting a less stressful microclimate on the northern side. Survival of naturally established seedlings was 28.6 % by the end of first summer; seedling mortality was chiefly due to drought (45.0 %) and herbivory (35.0 %). Density of emerged seedlings, surviving seedlings after first dry season, and established oaks [1-year old was similar at different distances from the islets. Over the 21 year time period, 58 new oak individuals [1-year old have established (an average of 3.3 established individuals per ha per year) at an average distance of 6.3 ± 5.4 m away from the closest islet. We conclude that initial oak regeneration triggered by small planted islets in Mediterranean abandoned farmland is slowed down by high acorn predation, seedling herbivory, and stressful microclimatic conditions. Regardless, these islets are a viable tool for regeneration of Mediterranean oak woodland.

show abstract

contrasting

confidence: 52%

Predation and aridity slow down the spread of 21-year-old planted woodland islets in restored Mediterranean farmland

et al. 2015

View full text Add to dashboard Cite

show abstract

“…canopy openness). Under shade conditions, the established Q. ilex are nevertheless able to persist without significant net growth (Espelta et al, 1995;Garcia-Barreda and Reyna, 2013), forming dense seedling banks and perpetuating through repeated shoot dieback and re-sprout until light conditions improve (Johnson et al, 2009). …”

Section: Tablementioning

confidence: 98%

“…), the characteristics of the stand (over-and understory structure and composition) and the attributes of the canopy layer (gap shape, size) (e.g. Lookingbill and Zavala, 2000;Smit et al, 2008;Garcia-Barreda and Reyna, 2013).…”

Section: Introductionmentioning

confidence: 99%

Stand-level drivers of tree-species diversification in Mediterranean pine forests after abandonment of traditional practices

Martín-Alcón

Coll

Salekin

2015

Forest Ecology and Management

View full text Add to dashboard Cite

a b s t r a c tThe progressive abandonment of traditional forest management over the last few decades has led to significant densification processes in most Mediterranean pine stands. In parallel, some of these stands have also shown tree-species diversification processes, the occurrence of which is considered essential for future adaptability and resilience to change. Here we aim to gain further understanding of the main factors driving these diversification processes via a case-study approach using the long-term-managed black pine (Pinus nigra Arn. ssp. salzmannii) forests of the Catalan Pre-Pyrenees (NE Spain). For this purpose, we sampled 155 plots distributed in 8 different stands and analyzed the role played by a number of microsite factors and stand attributes (including canopy openness and heterogeneity) on the abundance of seedlings (h < 1.3 m) and saplings (h > 1.3 m; dbh < 7.5 cm) of the main tree-species in the area (i.e. black pine, evergreen oak and marcescent oaks). Results revealed ongoing black pine recruitment limitation processes mainly associated to the high canopy cover of the overstory and the increasing abundance of shrubs, which may compete with pines for light resources. In contrast, we found that current environmental and stand-level conditions favor the progressive advance of the recruitment of evergreen and marcescent oaks, which are able to establish successfully under the dominant pine canopy. However, in the absence of canopy openings, light levels may not allow the established oaks (in particular the evergreen Quercus ilex) to grow and progress to higher developmental stages. Our findings bring deeper insight into the role of stand-level factors regulating species diversification, and can be used by forest managers to adjust their practices (e.g. by modifying the spatial and temporal patterns of silvicultural treatments such as thinnings or selection cuttings) in order to favor this natural process and increase stand resilience.

show abstract

Tree and shrub recruitment under environmental disturbances in temperate forests in the south of Mexico

Gutiérrez

Trejo

2022

Bot Stud

View full text Add to dashboard Cite

Background Recruitment after disturbance events depends on many factors including the environmental conditions of the affected area and the vegetation that could potentially grow in such affected areas. To understand the regeneration characteristics that occurs in temperate forests, we evaluated differences in the number of seedlings from trees and shrubs along an altitudinal gradient in Sierra Norte of Oaxaca, Mexico in different biological, climatic, edaphic, light, topographic, and disturbance regimes. Here, we aimed to test the hypothesis that the environmental disturbances influence on recruitment (positive or adverse influence). We sampled the vegetation to obtain recruitment and adult data, and species composition. Results We identified three disturbance regimes: areas affected by forest harvesting, areas exposed to pest management, and undisturbed areas. We identified 29 species of trees and shrubs (9 species of the genus Pinus, 1 species of the genus Abies, 10 species of the genus Quercus, and 9 of other species of broadleaf). We found that both environmental conditions and disturbances influence the recruitment of vegetation in the study area. In particular, disturbances had a positive influence on the regeneration of oak and other broadleaf species by increasing the number of seedlings, and a negative influence on the regeneration of conifers by decreasing the recruitment. Because the recruitment of conifers is more likely in undisturbed areas (sites over 3050 m). Conclusions Environmental factors and anthropogenic disturbances can alter the recruitment of forests. Consequently, knowing which factors are key for the recruitment of vegetation is fundamental for decision-making processes. This is particularly relevant in areas as the one in this study because it provides knowledge to local people on vegetation recovery for a proper management of their biological resources.

show abstract

Short-term dynamics of Quercus ilex advance regeneration in a Pinus nigra plantation after the creation of small canopy gaps

Cited by 3 publications

References 21 publications

Predation and aridity slow down the spread of 21-year-old planted woodland islets in restored Mediterranean farmland

Predation and aridity slow down the spread of 21-year-old planted woodland islets in restored Mediterranean farmland

Stand-level drivers of tree-species diversification in Mediterranean pine forests after abandonment of traditional practices

Tree and shrub recruitment under environmental disturbances in temperate forests in the south of Mexico

Contact Info

Product

Resources

About