{"id":929,"date":"2026-06-17T15:20:40","date_gmt":"2026-06-17T15:20:40","guid":{"rendered":"https:\/\/www.gril-ujkz.com\/index.php\/?p=929"},"modified":"2026-06-17T15:20:40","modified_gmt":"2026-06-17T15:20:40","slug":"caught-in-a-human-disturbance-trap-responses-of-tropical-savanna-trees-to-increasing-land-use-pressure","status":"publish","type":"post","link":"https:\/\/www.gril-ujkz.com\/index.php\/caught-in-a-human-disturbance-trap-responses-of-tropical-savanna-trees-to-increasing-land-use-pressure\/articles-scientifiques\/06\/","title":{"rendered":"Caught in a human disturbance trap: Responses of tropical savanna trees to increasing land-use pressure"},"content":{"rendered":"

Ann\u00e9e<\/strong>\u00a0: 2015<\/p>\n

Revue<\/strong>\u00a0: Forest Ecology and Management\u00a0, 354 :\u00a068-76<\/p>\n

Lien de l’article :<\/strong>\u00a0\u00a0Caught in a human disturbance trap: Responses of tropical savanna trees to incre…<\/a><\/p>\n

Discipline :<\/strong>\u00a0Agriculture, sylviculture et p\u00eache<\/p>\n

Auteur(s) :<\/strong>\u00a0Oumarou Ou\u00e9draogo, Loyapin Bond\u00e9, Joseph I. Boussim, Anja Linst\u00e4dter<\/p>\n

Auteur(s) tagu\u00e9s :<\/strong>\u00a0BONDE Loyapin<\/a>\u00a0OUEDRAOGO Oumarou<\/a>\u00a0BOUSSIM Issaka Joseph<\/a><\/p>\n

R\u00e9sum\u00e9<\/h2>\n
\n
\n

Increasing land-use pressure threatens the persistence of tree populations in West Africa\u2019s savannas. We do not fully understand yet why tree species respond differently to human disturbances, hampering the design of appropriate management strategies. To identify typical response pathways, we compared tree populations in three land-use types with increasing levels of human disturbance (protected forest, fallow and field). We analyzed size-class distributions (SCDs) of species and plant functional types, and compared the performance of juvenile and adult age-classes. Biomass was derived from biometric measurements via allometric equations. Higher land-use pressure increased juvenile proportions of plant functional types, but divergent responses were found for species: Juvenile proportions on fields were either very low (0%) or, in most cases, very high (96%), leading to SCDs with significant negative slopes. While negative slopes are commonly interpreted as indicating populations with sufficient recruitment, they could also indicate growth suppression, particularly if size-classes are missing between juveniles and adults. This \u2018juveniles get trapped\u2019 pathway is well-recognized for near-natural savannas with a high incidence of fire (\u2018fire trap\u2019) or wild browsers (\u2018browse trap\u2019), and is attributed to a high resprouting ability of trees. As resprouting constitutes a pre-adaptation to human disturbances, the trap concept should be extended accordingly. Species dominating in highly disturbed environments are either characterized by trait combinations allowing them to persist in a \u2018human disturbance trap\u2019, or they are actively protected. Our results advocate for designing management strategies that take into account how species\u2019 age-classes respond to disturbances. As the escape of juveniles to mature vegetation is a main demographic bottleneck for most Sudanian savanna species, it is essential to create escape opportunities.<\/p>\n<\/section>\n

\n

Mots-cl\u00e9s<\/h2>\n

Burkina Faso, Regeneration, Sudanian savannas, Size-class distribution, Tree populations<\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Ann\u00e9e\u00a0: 2015 Revue\u00a0: Forest Ecology and Management\u00a0, 354 :\u00a068-76 Lien de l’article :\u00a0\u00a0Caught in a human disturbance trap: Responses of tropical savanna trees to incre… Discipline :\u00a0Agriculture, sylviculture et p\u00eache Auteur(s) :\u00a0Oumarou Ou\u00e9draogo, Loyapin Bond\u00e9, Joseph I. Boussim, Anja Linst\u00e4dter Auteur(s) tagu\u00e9s :\u00a0BONDE Loyapin\u00a0OUEDRAOGO Oumarou\u00a0BOUSSIM Issaka Joseph R\u00e9sum\u00e9 Increasing land-use pressure threatens the persistence of […]<\/p>\n","protected":false},"author":46,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[40,72,70,39],"class_list":["post-929","post","type-post","status-publish","format-standard","hentry","category-articles-scientifiques","tag-anja-linstadter","tag-joseph-i-boussim","tag-loyapin-bonde","tag-oumarou-ouedraogo"],"_links":{"self":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/929","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/comments?post=929"}],"version-history":[{"count":1,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/929\/revisions"}],"predecessor-version":[{"id":930,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/posts\/929\/revisions\/930"}],"wp:attachment":[{"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/media?parent=929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/categories?post=929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gril-ujkz.com\/index.php\/wp-json\/wp\/v2\/tags?post=929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}