Multifunctional, Scrubby, and Invasive Forests?

Kull, Christian A.; Tassin, Jacques; Rangan, Haripriya

doi:10.1659/mrd.0864

Cited by 48 publications

(50 citation statements)

References 6 publications

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“…The most notable are the eucalyptus-dominated hills east and northeast of the capital, in the districts of Manjakandriana and Anjozorobe, where over 70 percent of the land-mostly former grassland-is now treed. At a smaller scale other similar landscapes are found outside other highland cities, such as the high-elevation pine and wattle groves between Antsirabe and Faratsiho [80].…”

Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 83%

“…Fruit trees and shrubs-from oranges to mangos, from vines to peaches-provide obvious consumable and marketable products, as well as secondary uses of dead branches as fuel wood, and mulberry leaves as silk worm fodder, among many other uses. Other benefits derived from trees include the production of honey based on eucalyptus flowers, the improvement of soil fertility based on acacia nitrogen fixation, and the sale of eucalyptus essential oils [79][80][81]. It is important to note that population growth in Madagascar is still quite rapid, with the country's population doubling between 1990 and 2013.…”

Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 99%

“…Second, urban market demand for wood fuel-particularly charcoal for urban consumers, or even to run industrial installations-as well as for construction wood, drives investment in woodlots [55,75,79,80,[84][85][86][87]. Several areas of the highlands contain landscapes particularly devoted to the production of charcoal, firewood, and wood products.…”

Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 99%

See 2 more Smart Citations

Forest Transition in Madagascar’s Highlands: Initial Evidence and Implications

McConnell

Viña

Kull

et al. 2015

Land

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Abstract:Madagascar is renowned for the loss of the forested habitat of lemurs and other species endemic to the island. Less well known is that in the highlands, a region often described as an environmental "basket-case" of fire-degraded, eroded grasslands, woody cover has been increasing for decades. Using information derived from publically available high-and medium-resolution satellites, this study characterizes tree cover dynamics in the highlands of Madagascar over the past two decades. Our results reveal heterogeneous patterns of increased tree cover on smallholder farms and village lands, spurred by a mix of endogenous and exogenous forces. The new trees play important roles in rural livelihoods, providing renewable supplies of firewood, charcoal, timber and other products and services, as well as defensible claims to land tenure in the context of a decline in the use of hillside commons for grazing. This study documents this nascent forest transition through Land Change Science techniques, and provides a prologue to political ecological analysis by setting these changes in their social and environmental context and interrogating the costs and benefits of the shift in rural livelihood strategies. OPEN ACCESSLand 2015, 4 1156

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Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 83%

Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 99%

Section: Political Ecological Context Of Tree Cover Changementioning

confidence: 99%

See 1 more Smart Citation

Forest Transition in Madagascar’s Highlands: Initial Evidence and Implications

McConnell

Viña

Kull

et al. 2015

Land

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“…En Afrique du Sud, la gestion des invasions d'acacias australiens est, à ce titre, très controversée (Neergaard et al, 2005). Sur les Hauts-Plateaux de Madagascar, Acacia dealbata (photo 6) colonise et enrichit spontanément les jachères, offrant de surcroît du bois de feu aux agriculteurs (Kull et al, 2007). Ce type d'évaluation objective des invasions, soupesant « le pour et le contre », reste rare.…”

Section: Photounclassified

Evaluation préliminaire des risques d'invasion par les essences forestières introduites à Madagascar

Tassin¹,

Bellefontaine

Roger

et al. 2009

Bois for. trop.

Self Cite

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Il est désormais admis que l'introduction d'une espèce exotique en milieu insulaire s'accompagne toujours d'un risque environnemental, représenté par l'éventuel déclenchement d'une invasion biologique. À Madagascar, ce risque est d'autant plus élevé que les introductions de matériel végétal s'accroissent à un degré très supérieur à celui des actions de lutte préventive, que la fréquence et l'intensité des perturbations humaines facilitent les invasions, et que la biodiversité à protéger est remarquable. Un examen préliminaire des 406 introductions d'arbres et arbustes effectuées sur cette île à des fins forestières ou agroforestières révèle que 12,8% de ces espèces se sont avérées nuisibles dans d'autres pays, et que 39,2% présentent un risque potentiel pour Madagascar dans la mesure où elles sont au moins susceptibles de s'y naturaliser. Une liste de 19 espèces présentant un risque élevé d'invasion est présentée. Sept d'entre elles sont connues pour avoir, à la fois, une reproduction sexuée et une multiplication végétative par drageonnage importantes. Face à une telle menace, un plan de gestion s'impose sur le plan national de manière à hiérarchiser, puis mettre en oeuvre les actions de communication, de recherche, de lutte préventive et de détection précoce qui s'imposent. (Résumé d'auteur)

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“…Alien plants have various effects on the environment and economy of non-native areas, many of the exotic plants are of economic benefit and some have severe negative impacts. Some alien species, often cultivated, may provide food, medicine, fuel or fodder to local communities (Kull et al, 2007;Roder et al, 2007) and some of them are responsible for endangerment and extinction of native species and has negative impact on crop production, forest regeneration, livestock grazing and on human health (Sharma et al, 2005;Kohli et al, 2006). It is estimated that as many as 50% of invasive species in general can be classified as ecologically harmful, based on their actual impacts (Richardson et al, 2000).…”

Section: Author(s) Agree That This Article Remain Permanently Open Acmentioning

confidence: 99%