2018
DOI: 10.24189/ncr.2018.001
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Restoration of degraded drylands through exclosures enhancing woody species diversity and soil nutrients in the highlands of Tigray, Northern Ethiopia

Abstract: Exclusion of grazing animals and tree plantations were among the methods used for the rehabilitation of degraded lands in tropical semiarid areas. Exclosures can foster secondary forest succession by improving soil conditions, attracting seed-dispersal agents and modifying microclimate for understory growth. This paper compares the woody species diversity and soil chemical properties under exclosure with increasing age and grazing land at different slope positions. The study has been conducted in northern Ethi… Show more

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Cited by 19 publications
(16 citation statements)
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“…Only three family names, i.e., Boraginaceae, Fabaceae, and Tiliaceae were observed in the open grazing land (Tables 4-7). As in many other places of Ethiopia, the Fabaceae family contributed the greatest number of species in the study area (Mekuria and Yami, 2013;Mekuria et al, 2015;Gebremedihin et al, 2018). Despite its consistency, both family numbers and species numbers increase with an increase in age of exclosure.…”
Section: Floristic Compositionmentioning
confidence: 72%
“…Only three family names, i.e., Boraginaceae, Fabaceae, and Tiliaceae were observed in the open grazing land (Tables 4-7). As in many other places of Ethiopia, the Fabaceae family contributed the greatest number of species in the study area (Mekuria and Yami, 2013;Mekuria et al, 2015;Gebremedihin et al, 2018). Despite its consistency, both family numbers and species numbers increase with an increase in age of exclosure.…”
Section: Floristic Compositionmentioning
confidence: 72%
“…Trends observed in the first period (1985–2000) could be explained by the improvement of dense forest and open forest as a result of the introduction of different interventions (e.g., intensive soil and water conservation, exclosure establishment, and community participation) [47,48,49]. The impacts of these interventions could have translated into the improvements observed between 1985 and 2000.…”
Section: Discussionmentioning
confidence: 99%
“…Protected Areas are a key component of the global response to environmental changes and degradation (Gaston et al, 2008;Conroy et al, 2011). They positively contribute to biodiversity conservation (Leverington et al, 2010;Akasaka et al, 2017;Ruchin & Makarkin, 2017;Gebremedihin et al, 2018). The effectiveness of Protected Area Networks in different regions depends on representativeness of endemic and threatened taxa (Jackson et al, 2009;Vellak et al, 2009;Gray et al, 2016), size (Schödelbauerová et al, 2009;Leroux et al, 2015), type (Lemenager et al, 2014;Fitzsimons, 2015;Furlonge et al, 2015), and protection support on behalf of government and non-government authorities Leverington et al, 2010;Tuvi et al, 2011;Bicknell et al, 2017).…”
Section: Introductionmentioning
confidence: 99%