Foliar and ecosystem respiration in an old-growth tropical rain forest

Plant, Cell & Environment
Molly A CavaleriMichael G Ryan

Abstract

Foliar respiration is a major component of ecosystem respiration, yet extrapolations are often uncertain in tropical forests because of indirect estimates of leaf area index (LAI). A portable tower was used to directly measure LAI and night-time foliar respiration from 52 vertical transects throughout an old-growth tropical rain forest in Costa Rica. In this study, we (1) explored the effects of structural, functional and environmental variables on foliar respiration; (2) extrapolated foliar respiration to the ecosystem; and (3) estimated ecosystem respiration. Foliar respiration temperature response was constant within plant functional group, and foliar morphology drove much of the within-canopy variability in respiration and foliar nutrients. Foliar respiration per unit ground area was 3.5 +/- 0.2 micromol CO2 m(-2) s(-1), and ecosystem respiration was 9.4 +/- 0.5 micromol CO2 m(-2) s(-1)[soil = 41%; foliage = 37%; woody = 14%; coarse woody debris (CWD) = 7%]. When modelled with El Niño Southern Oscillation (ENSO) year temperatures, foliar respiration was 9% greater than when modelled with temperatures from a normal year, which is in the range of carbon sink versus source behaviour for this forest. Our ecosystem respiration e...Continue Reading

References

Dec 10, 1997·Proceedings of the National Academy of Sciences of the United States of America·P B ReichD S Ellsworth
Apr 30, 2003·Proceedings of the National Academy of Sciences of the United States of America·D A ClarkD B Clark
Apr 23, 2004·Nature·Ian J WrightRafael Villar
Apr 23, 2004·Nature·George W KochStephen D Davis
Apr 1, 2005·Functional Plant Biology : FPB·Owen K AtkinMark G Tjoelker

❮ Previous
Next ❯

Citations

Aug 14, 2009·Tree Physiology·Michael G RyanJosé Luiz Stape
May 23, 2012·Biological Reviews of the Cambridge Philosophical Society·Tana E WoodSasha C Reed
May 9, 2014·Tree Physiology·Ulo Niinemets
Aug 14, 2009·The New Phytologist·Doug P Aubrey, Robert O Teskey
Jan 3, 2013·The New Phytologist·Alexander W Cheesman, Klaus Winter
Jun 12, 2010·Annals of the New York Academy of Sciences·S Joseph Wright
Dec 9, 2016·Ecological Applications : a Publication of the Ecological Society of America·R Chelsea NagyStephen Porder
Oct 31, 2013·Annals of Botany·Tomasz P WykaStefan A Schnitzer
Oct 5, 2018·Tree Physiology·Michael G RyanRichard H Waring
Jul 17, 2019·Global Change Biology·Manfredo di Porcia E BrugneraHans Verbeeck
Jul 1, 2013·Functional Plant Biology : FPB·Lucas A CernusakS Joseph Wright
Oct 29, 2020·The New Phytologist·Myriam MujawamariyaMirindi Eric Dusenge

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.