Logging impacts on liana regeneration and diversity in belize

Requena E., . and Cayetano D. T., . and Kay E., . and Finkral A., . and Mesh S., . and Roopsind A., . and Alvarez E., . and Putz F. E., . Logging impacts on liana regeneration and diversity in belize. pp. 343-348. ISSN 0128-1283

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- 2.9 m 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 Shannons entropy based on Renyis 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.

Full text available from: Official URL: https://www.frim.gov.my/v1/jtfsonline/jtfs/v29n3/3...

Abstract

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- 2.9 m 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 Shannons entropy based on Renyis 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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Item Type:	Article
AGROVOC Term:	Logging
AGROVOC Term:	Regeneration
AGROVOC Term:	Tropical forests
AGROVOC Term:	Timber
AGROVOC Term:	Forest workers
AGROVOC Term:	Felling
AGROVOC Term:	Lowland
AGROVOC Term:	Harvesting
AGROVOC Term:	Top soil
AGROVOC Term:	Species diversity
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23627

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