Assisted natural regeneration as affected by lodging and slashing vegetation in a grassland in the Philippines

Carandang, Wilfredo M.; Paelmo, Roselyn F.; Lee, Don Koo; Carandang, Vida Q.

doi:10.1080/21580103.2007.9656318

Cited by 5 publications

(3 citation statements)

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“…However, despite an obvious demand for lower cost interventions and the widespread application of assisted regeneration within a range of degraded land types globally, there have been relatively few studies quantifying its actual benefit (but see Carandang et al . ). Furthermore, there is a paucity of studies on the applicability of assisted regeneration on long cleared and grazed land in Australia such as retired agro‐pastoral land, although the effect of distance from extant vegetation on natural recovery has long been understood (McClanahan ; Cairns ; Dosch et al .…”

Section: Introductionmentioning

confidence: 97%

Assisted natural regeneration accelerates recovery of highly disturbed rainforest

Uebel¹,

Wilson²,

Shoo³

2017

Eco Management Restoration

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Summary Large areas of rainforests in Australia and other tropical regions have been extensively cleared since the mid‐19th century. As abandoned agro‐pastoral land becomes increasingly prominent, there is an ongoing need to identify cost‐effective approaches to reinstate forest on these landscapes. Assisted regeneration is a potentially lower cost restoration approach which aims to accelerate forest recovery by removing barriers to natural regeneration. However, despite being widely used its ecological benefits are poorly quantified, particularly on long cleared and grazed land. This study quantified the benefits of assisted regeneration on previously cleared land in a subtropical rainforest ecosystem within eastern Australia. Three different site types were used (grazed, grazing excluded and grazing excluded plus assisted regeneration, each with a maximum distance of 120 m to remnant forest) to compare forest recovery up to 10 years after grazing was relieved with and without 4–6 years of assisted regeneration. Assisted regeneration sites showed a threefold increase in canopy cover, fourfold increase in native tree and shrub species richness and over 40 times greater native stem density compared to nonassisted regeneration sites. Stimulation of native recruitment appears dependent on the simultaneous removal of multiple barriers to regeneration, with the exclusion of grazing alone insufficient. This demonstrates the additional ecological benefits arising from investment in assisted regeneration. It offers considerable promise as a cost‐effective tool for accelerating and improving reinstatement of forest on retired agro‐pastoral land in the humid subtropics.

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Section: Introductionmentioning

confidence: 97%

Assisted natural regeneration accelerates recovery of highly disturbed rainforest

Uebel¹,

Wilson²,

Shoo³

2017

Eco Management Restoration

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“…In addition, girdling practices accompanied by slashing is also important to consider, since slashing frees the naturally growing or planted tree species from competition (Carandang et al 2007). Overall, the growth rate was still higher than that of naturally grown seedlings; Widiyatno et al (2013) reported that in natural tropical rainforests, the total growth rate for all species was approximately 0.22 cm year -1 , while for dipterocarp species, it was within the range of 0.34-0.40 cm year -1…”

Section: Discussionmentioning

confidence: 99%

“…Aside from canopy treatments (girdling), weeding or slashing practices are also essential; at a young age, dipterocarp trees need intensive tending (Ådjers et al 1995). The frequency of slashing also has to be adjusted considering the main climatic conditions in the area (Carandang et al 2007). The study plot is located in a tropical rainforest, where weeds emerge rapidly due to the availability of rainfall throughout the year.…”

Section: Discussionmentioning

confidence: 99%

Assessment on the growth performance of planted Dryobalanops beccarii at reforestation sites after implementation of selective girdling

et al. 2020

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Abstract. Wasli ME, Ambun DB, Kalu M, Sidi M, Nahrawi H, Elias H. 2020. Assessment on the growth performance of planted Dryobalanops beccarii at reforestation sites after implementation of selective girdling. Biodiversitas 21: 1880-1889. This study was conducted to evaluate the growth performance of planted Dryobalanops beccarii Dyer at reforestation sites after silvicultural practices in Gunung Apeng National Park (GANP), Sarawak. The assessed area was planted with D. beccarii in 2005 and undergo silvicultural treatment by understory clearing which implemented annually. Due to the suppressed growth rate of the planted trees, an additional silvicultural treatment, the selective girdling on selected pioneer species, was implemented once, in 2012. In this study, study plots with two treatments were established: T1: understory clearing only (control plot), and T2: additional selective girdling of existing pioneer species in addition to the understory clearing practice applied in T1. The growth performance of the planted D. beccarii in terms of DBH, height, survival and mean annual increments in diameter (MaiD) and height (MaiH) were assessed and monitored at the initial stage when the selective girdling treatment was applied and 4, 24, 36, 48, 60 and 72 months after girdling. Our findings showed that the survival rates of planted trees at 72 months under treatments T1 and T2 were 82.9% and 79.2%, respectively. The average tree DBH in T2 was significantly higher than that in T1, and the average tree DBH values for T1 and T2 were 7.5 cm and 9.4 cm, respectively. The average tree heights for T1 and T2 were 8.3 m and 9.2 m, respectively. In terms of the mean annual increments in height (MaiH) and diameter (MaiD), those in T2 were significantly higher than those in T1. Our findings indicated that T2 started to show better growth performance than T1 after a period of 36 months. In conclusion, the additional silvicultural treatment by selective girdling at the reforestation site had a long-term, progressive effect on the growth performance of the planted trees.

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Restoring vegetation and degraded lands by using assisted natural regeneration approach (ANRA): case study at Bankass in the centre of Mali, West Africa

Kelly

Sanogo

Sidibé

et al. 2021

Environ Dev Sustain

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Assisted natural regeneration as affected by lodging and slashing vegetation in a grassland in the Philippines

Cited by 5 publications

References 0 publications

Assisted natural regeneration accelerates recovery of highly disturbed rainforest

Assisted natural regeneration accelerates recovery of highly disturbed rainforest

Assessment on the growth performance of planted Dryobalanops beccarii at reforestation sites after implementation of selective girdling

Restoring vegetation and degraded lands by using assisted natural regeneration approach (ANRA): case study at Bankass in the centre of Mali, West Africa

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