Spatial pattern of central African rainforests can be predicted from average tree size
When considering all trees irrespective of their species, natural tropical rain forests typically exhibit spatial patterns that range from random to regular. The regularity is often interpreted as a footprint of tree competition. Using 23 permanent sample plots totalling 61 ha in the rain forests of central Africa, we characterized their spatial patterns and modelled those that exhibited regularity by a Strauss point process. This Strauss process is obtained as a Markov point process whose interaction function is an exponential function of a competition index commonly used in forestry. The parameter of this Strauss process characterizes the strength of competition. The 23 plots in central Africa differed in tree density and basal area, and could be discriminated depending on the type of spatial patterns: plots having a large basal area with respect to their density had a non regular pattern, whereas those having a small basal area with respect to their density had a regular pattern. For those plots that exhibited regularity, average tree size could be used to predict the strength of competition. The parameter of the Strauss process was significantly related to the average size by a linear relationship, such that competition decreases as average tree size increases. This relationship extrapolated to a null value of the Strauss parameter when average tree size reaches 32 cm in diameter. This relationship between average tree size and spatial pattern is a testable feature for future studies on the relationship between competition and spatial pattern in natural forests.
Main Authors: | , , , , , , , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | K01 - Foresterie - Considérations générales, F40 - Écologie végétale, U10 - Informatique, mathématiques et statistiques, forêt tropicale humide, http://aims.fao.org/aos/agrovoc/c_7976, http://aims.fao.org/aos/agrovoc/c_8500, http://aims.fao.org/aos/agrovoc/c_3161, http://aims.fao.org/aos/agrovoc/c_1811, http://aims.fao.org/aos/agrovoc/c_1229, |
Online Access: | http://agritrop.cirad.fr/556682/ http://agritrop.cirad.fr/556682/1/document_556682.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-556682 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5566822024-01-28T18:38:01Z http://agritrop.cirad.fr/556682/ http://agritrop.cirad.fr/556682/ Spatial pattern of central African rainforests can be predicted from average tree size. Engone Obiang Nestor Laurier, Ngomanda Alfred, Mboma Raymonde, Nzabi Thomas, Ngoye Alfred, Atsima Lydia, Ndjélé Léopold, Mate Jean-Pierre, Lomba Christophe, Picard Nicolas. 2010. Oikos, 119 (10) : 1643-1653.https://doi.org/10.1111/j.1600-0706.2010.18440.x <https://doi.org/10.1111/j.1600-0706.2010.18440.x> Spatial pattern of central African rainforests can be predicted from average tree size Engone Obiang, Nestor Laurier Ngomanda, Alfred Mboma, Raymonde Nzabi, Thomas Ngoye, Alfred Atsima, Lydia Ndjélé, Léopold Mate, Jean-Pierre Lomba, Christophe Picard, Nicolas eng 2010 Oikos K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 République démocratique du Congo Gabon Congo Cameroun http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 When considering all trees irrespective of their species, natural tropical rain forests typically exhibit spatial patterns that range from random to regular. The regularity is often interpreted as a footprint of tree competition. Using 23 permanent sample plots totalling 61 ha in the rain forests of central Africa, we characterized their spatial patterns and modelled those that exhibited regularity by a Strauss point process. This Strauss process is obtained as a Markov point process whose interaction function is an exponential function of a competition index commonly used in forestry. The parameter of this Strauss process characterizes the strength of competition. The 23 plots in central Africa differed in tree density and basal area, and could be discriminated depending on the type of spatial patterns: plots having a large basal area with respect to their density had a non regular pattern, whereas those having a small basal area with respect to their density had a regular pattern. For those plots that exhibited regularity, average tree size could be used to predict the strength of competition. The parameter of the Strauss process was significantly related to the average size by a linear relationship, such that competition decreases as average tree size increases. This relationship extrapolated to a null value of the Strauss parameter when average tree size reaches 32 cm in diameter. This relationship between average tree size and spatial pattern is a testable feature for future studies on the relationship between competition and spatial pattern in natural forests. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/556682/1/document_556682.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/j.1600-0706.2010.18440.x 10.1111/j.1600-0706.2010.18440.x http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=200912 info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1600-0706.2010.18440.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/j.1600-0706.2010.18440.x |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 |
spellingShingle |
K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 Engone Obiang, Nestor Laurier Ngomanda, Alfred Mboma, Raymonde Nzabi, Thomas Ngoye, Alfred Atsima, Lydia Ndjélé, Léopold Mate, Jean-Pierre Lomba, Christophe Picard, Nicolas Spatial pattern of central African rainforests can be predicted from average tree size |
description |
When considering all trees irrespective of their species, natural tropical rain forests typically exhibit spatial patterns that range from random to regular. The regularity is often interpreted as a footprint of tree competition. Using 23 permanent sample plots totalling 61 ha in the rain forests of central Africa, we characterized their spatial patterns and modelled those that exhibited regularity by a Strauss point process. This Strauss process is obtained as a Markov point process whose interaction function is an exponential function of a competition index commonly used in forestry. The parameter of this Strauss process characterizes the strength of competition. The 23 plots in central Africa differed in tree density and basal area, and could be discriminated depending on the type of spatial patterns: plots having a large basal area with respect to their density had a non regular pattern, whereas those having a small basal area with respect to their density had a regular pattern. For those plots that exhibited regularity, average tree size could be used to predict the strength of competition. The parameter of the Strauss process was significantly related to the average size by a linear relationship, such that competition decreases as average tree size increases. This relationship extrapolated to a null value of the Strauss parameter when average tree size reaches 32 cm in diameter. This relationship between average tree size and spatial pattern is a testable feature for future studies on the relationship between competition and spatial pattern in natural forests. |
format |
article |
topic_facet |
K01 - Foresterie - Considérations générales F40 - Écologie végétale U10 - Informatique, mathématiques et statistiques forêt tropicale humide http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_8500 http://aims.fao.org/aos/agrovoc/c_3161 http://aims.fao.org/aos/agrovoc/c_1811 http://aims.fao.org/aos/agrovoc/c_1229 |
author |
Engone Obiang, Nestor Laurier Ngomanda, Alfred Mboma, Raymonde Nzabi, Thomas Ngoye, Alfred Atsima, Lydia Ndjélé, Léopold Mate, Jean-Pierre Lomba, Christophe Picard, Nicolas |
author_facet |
Engone Obiang, Nestor Laurier Ngomanda, Alfred Mboma, Raymonde Nzabi, Thomas Ngoye, Alfred Atsima, Lydia Ndjélé, Léopold Mate, Jean-Pierre Lomba, Christophe Picard, Nicolas |
author_sort |
Engone Obiang, Nestor Laurier |
title |
Spatial pattern of central African rainforests can be predicted from average tree size |
title_short |
Spatial pattern of central African rainforests can be predicted from average tree size |
title_full |
Spatial pattern of central African rainforests can be predicted from average tree size |
title_fullStr |
Spatial pattern of central African rainforests can be predicted from average tree size |
title_full_unstemmed |
Spatial pattern of central African rainforests can be predicted from average tree size |
title_sort |
spatial pattern of central african rainforests can be predicted from average tree size |
url |
http://agritrop.cirad.fr/556682/ http://agritrop.cirad.fr/556682/1/document_556682.pdf |
work_keys_str_mv |
AT engoneobiangnestorlaurier spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT ngomandaalfred spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT mbomaraymonde spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT nzabithomas spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT ngoyealfred spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT atsimalydia spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT ndjeleleopold spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT matejeanpierre spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT lombachristophe spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize AT picardnicolas spatialpatternofcentralafricanrainforestscanbepredictedfromaveragetreesize |
_version_ |
1792497653090615296 |