Studies of Mineral Cycling in a Montane Rain Forest in New Guinea: II. The Production and Disappearance of Litter

Edwards, P. J.

doi:10.2307/2259388

Cited by 148 publications

(93 citation statements)

References 9 publications

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“…For example, Edwards (1977) found that small wood litter lost an average of 36±40% of its mass before falling into litter traps. Frangi and Lugo (1985) found a similar decomposition loss by leaves trapped in the canopy before falling.…”

Section: Anpp Estimatesmentioning

confidence: 99%

Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest

Chambers¹,

Santos

Ribeiro

et al. 2001

Forest Ecology and Management

392

349

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Section: Anpp Estimatesmentioning

confidence: 99%

Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest

Chambers¹,

Santos

Ribeiro

et al. 2001

Forest Ecology and Management

392

349

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“…increasing precipitation and decreasing temperatures at higher elevations, changes of soil moisture and the accumulation of organic matter in the organic layers). We are not aware of a study on the potential contribution of organic layers to oxidize methane in tropical montane forest soils even though thick organic layers frequently occur in these ecosystems (Edwards and Grubb 1977).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric methane uptake by tropical montane forest soils and the contribution of organic layers

2011

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Microbial oxidation in aerobic soils is the primary biotic sink for atmospheric methane (CH 4 ), a powerful greenhouse gas. Although tropical forest soils are estimated to globally account for about 28% of annual soil CH 4 consumption (6.2 Tg CH 4 year -1 ), limited data are available on CH 4 exchange from tropical montane forests. We present the results of an extensive study on CH 4 exchange from tropical montane forest soils along an elevation gradient (1,000, 2,000, 3,000 m) at different topographic positions (lower slope, mid-slope, ridge position) in southern Ecuador. All soils were net atmospheric CH 4 sinks, with decreasing annual uptake rates from 5.9 kg CH 4 -C ha -1 year -1 at 1,000 m to 0.6 kg CH 4 -C ha -1 year -1 at 3,000 m. Topography had no effect on soil atmospheric CH 4 uptake. We detected some unexpected factors controlling net methane fluxes: positive correlations between CH 4 uptake rates, mineral nitrogen content of the mineral soil and with CO 2 emissions indicated that the largest CH 4 uptake corresponded with favorable conditions for microbial activity. Furthermore, we found indications that CH 4 uptake was N limited instead of inhibited by NH 4 ?. Finally, we showed that in contrast to temperate regions, substantial high affinity methane oxidation occurred in the thick organic layers which can influence the CH 4 budget of these tropical montane forest soils. Inclusion of elevation as a co-variable will improve regional estimates of methane exchange in these tropical montane forests.

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“…Alguns estudos em florestas sazonais observaram queda contínua, de intensidade variável, com um máximo de queda no final da estação seca (Edwards 1977, KunkelWestphal & Kunkel 1979, Morellato 1992, Haines & Foster 1997, podendo aumentar cerca de 2 a 2,5 vezes na estação seca quando comparada à úmida (Sizer et al 2000). O máximo de queda de folhas na estação seca está aparentemente relacionado à redução de perda de água pelas árvores em florestas estacionais (Haines & Foster 1997).…”

Section: Introductionunclassified

“…O máximo de queda de folhas na estação seca está aparentemente relacionado à redução de perda de água pelas árvores em florestas estacionais (Haines & Foster 1997). Entretanto, outros estudos em florestas úmidas sempre verdes encontraram a maior queda de serapilheira no período mais chuvoso, certamente influenciada por períodos de fortes chuvas (Edwards 1977, Moraes et al 1999, Nascimento 2005. Esses períodos de chuvas fortes provocam maior queda de material lenhoso, levando a um aumento de formação de clareiras e, conseqüentemente, um aumento da abertura do dossel (Martínez-Ramos et al 1988).…”

Section: Introductionunclassified

Produção e espessura da serapilheira na borda e interior de fragmentos florestais de Mata Atlântica de diferentes tamanhos

Portela¹,

Santos²

2007

Rev. bras. Bot.

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Studies of Mineral Cycling in a Montane Rain Forest in New Guinea: II. The Production and Disappearance of Litter

Cited by 148 publications

References 9 publications

Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest

Tree damage, allometric relationships, and above-ground net primary production in central Amazon forest

Atmospheric methane uptake by tropical montane forest soils and the contribution of organic layers

Produção e espessura da serapilheira na borda e interior de fragmentos florestais de Mata Atlântica de diferentes tamanhos

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