A less restrictive technique for the estimation of understory light under variable weather conditions

Forest Ecology and Management

Volumn 242, Issue 2-3, 2007, Pages 800-804

  Paquette, Alain ^a   Bouchard, André ^a   Cogliastro, Alain ^a  

^a UNIVERSITÉ DE MONTRÉAL   (Canada)

Author keywords

PAR; PPFD; Available understory light estimation; Beam fractions; BF2; Diffuse light; Hemispherical image analysis; Overcast sky

Indexed keywords

IMAGE ANALYSIS; IMAGE SENSORS; QUANTUM THEORY; WEATHER MODIFICATION;

AVAILABLE UNDERSTORY LIGHT ESTIMATION; BEAM FRACTIONS; DIFFUSE LIGHT; HEMISPHERICAL IMAGE ANALYSIS; OVERCAST SKY;

FORESTRY;

CLIMATE CONDITIONS; CLOUD COVER; GROWTH RATE; IMAGERY; LIGHT AVAILABILITY; LIGHT INTENSITY; PHOTOSYNTHETICALLY ACTIVE RADIATION; SEEDLING EMERGENCE; SENSOR; UNDERSTORY;

FORESTRY; IMAGE ANALYSIS; WEATHER;

EID: 34047151186     PISSN: 03781127     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.foreco.2007.01.067     Document Type: Article

References (34)

1. Aubin I., Beaudet M., and Messier C. Light extinction coefficients specific to the understory vegetation of the southern boreal forest, Quebec. Can. J. For. Res. 30 (2000) 168-177
2. Beaudet M., and Messier C. Growth and morphological responses of yellow birch, sugar maple, and beech seedlings growing under a natural light gradient. Can. J. For. Res. 28 (1998) 1007-1015
3. Beaudet M., Messier C., and Leduc A. Understorey light profiles in temperate deciduous forests: recovery process following selection cutting. J. Ecol. 92 (2004) 328-338
4. Boivin, R., Boily, M., 1991. Caractéristiques écologiques du secteur Bois-Franc au Parc régional du Bois-de-Liesse. Rapport de recherche préparé pour la Communauté urbaine de Montréal. Université du Québec à Montréal, Montréal.
5. Canham C.D. Growth and canopy architecture of shade-tolerant trees: response to canopy gaps. Ecology 69 (1988) 786-795
6. Canham C.D. An index for understory light levels in and around canopy gaps. Ecology 69 (1988) 1634-1638
7. Canham C.D., Denslow J.S., Platt W.J., Runkle J.R., Spies T.A., and White P.S. Light regimes beneath closed canopies and tree-fall gaps in temperate and tropical forests. Can. J. For. Res. 20 (1990) 620-631
8. Chazdon R.L., and Pearcy R.W. The importance of sunflecks for forest understory plants. BioScience 41 (1991) 760-766
9. Cogliastro, A., Benjamin, K., Bouchard, A., 2006. Effects of full and partial clearing, with and without herbicide, on weed cover, light availability, and establishment success of white ash on shrub communities of abandoned pastureland in southwestern Quebec, Canada. New Forest 32, 197-210.
10. Comeau P.G., Gendron F., and Letchford T. A comparison of several methods for estimating light under a paper birch mixedwood stand. Can. J. For. Res. 28 (1998) 1843-1850
11. Delagrange S., Messier C., Lechowicz M.J., and Dizengremel P. Physiological, morphological and allocational plasticity in understory deciduous trees: importance of plant size and light availability. Tree Physiol. 24 (2004) 775-784
12. Drever C.R., and Lertzman K.P. Effects of a wide gradient of retained tree structure on understory light in coastal Douglas-fir forests. Can. J. For. Res. 33 (2003) 137-146
13. Easter M.J., and Spies T.A. Using hemispherical photography for estimating photosynthetic photon flux density under canopies and in gaps in Douglas-fir forests of the Pacific Northwest. Can. J. For. Res. 24 (1994) 2050-2058
14. Englund S.R., O'Brien J.J., and Clark D.B. Evaluation of digital and film hemispherical photography and spherical densiometry for measuring forest light environments. Can. J. For. Res. 30 (2000) 1999-2005
15. Ferment A., Picard N., Gourlet-Fleury S., and Baraloto C. A comparison of five indirect methods for characterizing the light environment in a tropical forest. Ann. For. Sci. 58 (2001) 877-891
16. Frazer G.W., Canham C.D., and Lerstzan K.P. Gap light analyzer 2.0. Bull. Ecol. Soc. Am. 81 (2000) 191-197
17. Frazer G.W., Fournier R.A., Trofymow J.A., and Hall R.J. A comparison of digital and film fisheye photography for analysis of forest canopy structure and gap light transmission. Agric. For. Meteorol. 109 (2001) 249-263
18. Gendron F., Messier C., and Comeau P.G. Comparison of various methods for estimating the mean growing season percent photosynthetic photon flux density in forests. Agric. For. Meteorol. 92 (1998) 55-70
19. Godman R.M., Yawney H.W., and Tubbs C.H. Sugar maple (Acer saccharum Marsh.). In: Burns R.M., and Honkala B.H. (Eds). Silvics of North America, vol. 2, Hardwoods (1990), USDA Forest Service, Washinton, DC 78-91
20. Hanan N.P., and Bégué A. A method to estimate instantaneous and daily intercepted photosynthetically active radiation using a hemispherical sensor. Agric. For. Meteorol. 74 (1995) 155-168
21. Legendre L., and Legendre P. Numerical Ecology (1998), Elsevier, Amsterdam
22. Machado J.-L., and Reich P.B. Evaluation of several measures of canopy openness as predictors of photosynthetic photon flux density in deeply shaded conifer-dominated forest understory. Can. J. For. Res. 29 (1999) 1438-1444
23. Messier C., and Parent S. Reply-the effects of direct-beam light on overcast-day estimates of light availability: on the accuracy of the instantaneous one-point overcast-sky conditions method to estimate mean daily %PPFD under heterogeneous overstory canopy conditions. Can. J. For. Res. 27 (1997) 274-275
24. Messier C., Parent S., and Bergeron Y. Effects of overstory and understory vegetation on the understory light environment in mixed boreal forests. J. Veg. Sci. 9 (1998) 511-520
25. Messier C., and Puttonen P. Spatial and temporal variation in the light environment of developing Scots pine stands: the basis for a quick and efficient method of characterizing light. Can. J. For. Res. 25 (1995) 343-354
26. Nobis M., and Hunziker U. Automatic thresholding for hemispherical canopy-photographs based on edge detection. Agric. For. Meteorol. 128 (2005) 243-250
27. Paquette A., Bouchard A., and Cogliastro A. Successful under-planting of red oak and black cherry in early-successional deciduous shelterwoods of North America. Ann. For. Sci. 63 (2006) 823-831
28. Paquette A., Bouchard A., and Cogliastro A. Survival and growth of under-planted trees: a meta-analysis across four biomes. Ecol. Appl. 16 (2006) 1575-1589
29. Parent S., and Messier C. A simple and efficient method to estimate microsite light availability under a forest canopy. Can. J. For. Res. 26 (1996) 151-154
30. Rich P.M., Clark D.B., Clark D.A., and Oberbauer S.F. Long-term study of solar radiation regimes in a tropical wet forest using quantum sensors and hemispherical photography. Agric. For. Meteorol. 65 (1993) 107-127
31. Stadt K.J., Landhäusser S.M., and Stewart J.D. Comment-the effects of direct-beam light on overcast-day estimates of light availability. Can. J. For. Res. 27 (1997) 272-274
32. Valladares F., Allen M.T., and Pearcy R.W. Photosynthetic responses to dynamic light under field conditions in six tropical rainforest shrubs occurring along a light gradient. Oecologia 111 (1997) 505-514
33. Wayne P.M., and Bazzaz F.A. Birch seedling responses to daily time courses of light in experimental forest gaps and shadehouses. Ecology 74 (1993) 1500-1515
34. Wood J., Muneer T., and Kubie J. Evaluation of a new photodiode sensor for measuring global and diffuse irradiance, and sunshine duration. J. Solar Energy Eng. 125 (2003) 43-48