Effects of reduced-impact selective logging on palm regeneration in Belize

Arevalo, Boris.M; Valladarez, Jair; Muschamp, Shahira; Kay, Elma; Finkral, Alex; Roopsind, Anand; Putz, Francis E.

doi:10.1016/j.foreco.2016.03.040

Cited by 20 publications

(16 citation statements)

References 24 publications

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“…We did not inventory understory palms, but they were very common in the enrichment planted gaps where they cast shade on many planted seedlings. Palm proliferation is likely to be the result of release by logging of previously suppressed palms plus a pulse of post-harvest regeneration such as observed in neighboring Belize [34].…”

Section: Tree Retention In Bosquetesmentioning

confidence: 99%

“…Although seedlings growing in the open were more likely to suffer shoot tip damage than more shaded individuals, which is a pattern reported in the literature [6,35,36], the fastest growing seedlings were also in the open, regardless of the status of their shoot tips. We believe that this counterintuitive finding means that the advantages to mahogany seedlings of high light fully compensates for the shoot tip losses to which they are especially susceptible under those growth-favoring conditions [6,[34][35][36].…”

Section: Planted Seedling Growth In Relation To Shade Shoot Tip Damamentioning

confidence: 99%

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Remnant Trees in Enrichment Planted Gaps in Quintana Roo, Mexico: Reasons for Retention and Effects on Seedlings

Navarro-Martínez

Palmas

Ellis

et al. 2017

Forests

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Natural forest management in the tropics is often impeded by scarcity of advanced regeneration of commercial species. To supplement natural regeneration in a forest managed by a community in the Selva Maya of Mexico, nursery-grown Swietenia macrophylla seedlings were planted in multiple-tree felling gaps, known as bosquetes. Remnant trees are often left standing in gaps for cultural and economic reasons or due to their official protected status. We focus on these purposefully retained trees and their impacts on planted seedlings. Sampled bosquetes were 400-1800 m 2 , of which remnant trees covered a mean of 29%. Seedling height growth rates over the first 18 months after out-planting more than doubled with increased canopy openness from 0.09 m year −1 under medium cover to 0.22 m year −1 in full sun. Liana infestations and shoot tip damage were most frequent on seedlings in the open, but, contrary to our expectations, height growth rates were 0.14 m year −1 faster for liana-infested seedlings than non-infested and did not differ between damaged and undamaged seedlings. Apparently the more rapid height growth of well-illuminated seedlings more than compensated for the effects of lianas or shoot tip damage. Despite the abundance of remnant trees and their negative effects on seedling growth, enrichment planting in bosquetes has potential for community-based natural forest management in the tropics in supplementing natural regeneration of commercial species. One obvious recommendation is to leave fewer remnant trees, especially those of commercial species that are non-merchantable due to stem defects and trees retained for no apparent reason, which together constituted half of the remnant crown cover in the sampled bosquetes. Finally, given the rapid growth of lianas and understory palms in large canopy gaps, at least the most vigorous of the planted seedlings should be tended for at least two years.

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Section: Tree Retention In Bosquetesmentioning

confidence: 99%

Section: Planted Seedling Growth In Relation To Shade Shoot Tip Damamentioning

confidence: 99%

Remnant Trees in Enrichment Planted Gaps in Quintana Roo, Mexico: Reasons for Retention and Effects on Seedlings

Navarro-Martínez

Palmas

Ellis

et al. 2017

Forests

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“…Log landings were generally rectangular and averaged 1200 m 2 . Felling gaps were irregular in shape, usually somewhat elongated and averaged 90 m 2 (Arevalo et al 2016). Along a disturbance gradient based on canopy opening and soil disturbance, felling gaps were considered to be at the low end followed by secondary and primary skid trails, and then log landings as the most heavily disturbed due to complete canopy clearance and removal, or at least severe disturbance of much of the surface soil.…”

Section: Data Collectionmentioning

confidence: 99%

“…This closed canopy forest grows on thin soils over karstic limestone. In addition to mahogany, common canopy trees include Santa Maria (Calophylum brasiliense), cabbage bark (Lonchocarpus castilloi) and sapodilla (Manilkara zapota), with abundant palms (e.g., Cryosophila stauracantha and Sabal mauritiiformis) (Arevalo et al 2016). The 350 ha study area was logged from March-May 2014 at an average intensity of 2.7 trees ha -1 (2.9 m 3 ha -1…”

Section: Introductionmentioning

confidence: 99%

Logging Impacts on Liana Regeneration And

Mesh¹,

Cayetano²,

Requena³

et al. 2017

JTFS

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Lianas play important ecological roles and are represented by large numbers of species in tropical forests, but to timber managers, they are a nuisance as they inhibit commercial tree recruitment and growth, increase the risk of injuries to forest workers and increase collateral damage during timber harvests. To determine the response of lianas to a low-intensity selective timber harvest (2.7 trees ha ) carried out with reduced-impact logging (RIL) techniques, liana regeneration was measured on 11 log landings and each of their associated primary skid trails, secondary skid trails and felling gaps. The study was conducted 10 months after a timber harvest in a lowland mixed tropical forest in Belize. Liana diversity, abundance and modes of regeneration (i.e. seed versus vegetative sprouts) were assessed by taxonomic family. Lianas were least abundant on log landings that experienced complete topsoil removal. Similarly, taxonomic family diversity and Shannon's entropy based on Renyi's diversity profile were lowest on log landings. Lianas, particularly those that regenerated directly from seeds, increased in abundance from felling gaps to secondary skid trails to primary skid trails. Liana recruitment was dominated (in order of decreasing abundance) by species in the Fabaceae, Bignoniaceae and Dilleniaceae. Fabaceae contributed the majority of seed-origin liana regeneration while most vegetative sprouts were Bignoniaceae. The results indicated that the low intensity RIL harvest studied retarded liana regeneration only on log landings and did not result in liana proliferation or extreme changes in liana community composition.

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“…The other study from the Belize workshop was published in a higher ranked journal (Forest Ecology and Management; Arevalo et al . ) and was cited several times in the first year after its release. The manuscript that represented the work of the entire group in Mexico was rejected by Forest Ecology and Management in part because of a weak statistical approach, but with that problem rectified, it was published in Forests (Navarro‐Martínez et al .…”

mentioning

confidence: 99%

An experiential, adaptive, inexpensive, and opportunistic approach to research capacity building in the tropics

2018

Self Cite

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Based on intensive field courses on tropical forest management and conservation in Belize, Guyana, Indonesia, and Mexico, we recommend a pedagogical approach designed to help fill scientific mentor gaps where they impede publication by relatively inexperienced scientists. Participants in these 8–12 day field sessions were provided what instructors judged to be novel research topics but then were tasked with refining hypotheses, developing and implementing field studies, analyzing data, rehearsing formal oral presentations, and preparing complete manuscript drafts. Over the subsequent months, the manuscripts were revised for submission to peer‐reviewed journals; to date, six were published, one is in review, and two others are close to submission. These were the first publications of most of the participants, some of whom are evaluated by their home institutions partially on the basis of their publication records. These low cost workshops were fun and benefited participants and instructors alike.

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Effects of reduced-impact selective logging on palm regeneration in Belize

Cited by 20 publications

References 24 publications

Remnant Trees in Enrichment Planted Gaps in Quintana Roo, Mexico: Reasons for Retention and Effects on Seedlings

Remnant Trees in Enrichment Planted Gaps in Quintana Roo, Mexico: Reasons for Retention and Effects on Seedlings

Logging Impacts on Liana Regeneration And

An experiential, adaptive, inexpensive, and opportunistic approach to research capacity building in the tropics

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