Vegetation analysis of Failaka Island (Kuwait)

Abbadi, Ghanim A.; El-Sheikh, Mohamed M.

doi:10.1006/jare.2001.0855

Cited by 43 publications

(25 citation statements)

References 9 publications

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“…In such cases, most of the total cover is accounted for by 1 or 2 species that can make the best use of available resources as a result of their high competitive capacities under environmental stress. Similar correlations were reported by El-Demerdash et al (1995), Abbadi and El-Sheikh (2002), El-Sheikh et al (2006, and Alatar et al (2012). Concerning the socioeconomic changes of the wadi bed area, increasing human activities could be observed.…”

Section: Discussionsupporting

confidence: 87%

Floristic diversity and vegetation analysis of Wadi Al-Noman, Mecca, Saudi Arabia

Khalik¹,

El‐Sheikh²,

Elaidarous³

2013

Turk J Bot

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Wadi Al-Noman in Mecca is one of the most important wadis. It was included among the most important water sources where the springs and wells of Zobida run and it provides drinking water for the holy places in Mecca and visitors to the Kaaba and Arafat regions. The present study provides an analysis of floristic composition, vegetation types, and structure and species distribution at 20 sites, emphasising the environmental factors that affect species distribution. A total of 126 species representing 39 families of vascular plants are recorded. Fabaceae, Poaceae, and Boraginaceae are the largest families, and therophytes and chamaephytes are the most frequent, indicating a typical desert life-form spectrum. The floristic composition of the different geomorphologic landscape units shows differences in species richness. The highest species richness value (23 species stand -1 ) is recorded in the wadi bed. The lowest species richness value (18 species stand -1 ) is recorded in the wadi plateau and fissures. Chorological analysis revealed that 52% of the studied species are bioregional, native to the Saharo-Arabian-Sudano-Zambezian region. After application of the TWINSPAN, DCA, and CCA programs 4 vegetation groups were identified, and they were named after the characteristic species as follows: (I) Aristolochia bracteolata-Cucumis prophetarum; (II) Calotropis procera-Acacia hamulosa-Caralluma russeliana; (III) Acacia abyssinica-Acacia hamulosa-Tephrosia desertorum; and (IV) Argemone ochroleuca-Senna italica. The associations and speciation of these Wadi Al-Noman plants demonstrate significant variation in pH, electrical conductivity, soil mineral contents, and human impact.

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Section: Discussionsupporting

confidence: 87%

Floristic diversity and vegetation analysis of Wadi Al-Noman, Mecca, Saudi Arabia

Khalik¹,

El‐Sheikh²,

Elaidarous³

2013

Turk J Bot

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“…Em 2013, todos os resultados destas variáveis se aproximaram ao das regiões áridas, com a biomassa vegetal abaixo de 2 Mg • ha -1 (Cowlishaw & Davies, 1997;Hegazy et al, 1998;Houérou, 1997;Abbadi et al, 2002;Enright et al, 2005;Hanafi, 2008;Bisigato et al, 2009;Vilela et al, 2009), com registros da fauna nativa (mastofauna, avifauna e hepertofauna) menores que 10 indivíduos por hectares (Wang et al, 2001;Scott et al, 2005;Ojeda & Tabeni, 2009;Fokidis, 2011;Rodríguez & Ojeda, 2011;McDonald, 2012;Herrmann & Branch, 2013) e índices de diversidade de Shannon menores que 0,3 (Houérou, 1997;Kraaij & Milton, 2006;Chillo & Ojeda, 2012;Sow et al, 2014). Essas tendências dos dados também foram descritas em outras localidades áridas submetidas à perturbação antrópica, à mudança do uso da terra e ao extrativismo (Tabeni & Ojeda, 2003Reij et al, 2005;Sow et al, 2014).…”

Section: Resultados Das Variáveis Ambientais E Humanasunclassified

Resistência social na Caatinga árida: a narrativa de quem ficou no colapso ambiental

Santana

2016

Desenvolv. Meio Ambiente

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Artigo recebido em 19 de outubro de 2015, versão final aceita em 23 de maio de 2016. RESUMO:A região analisada é historicamente um espaço de conflitos e de uma "violência fundadora", situada acima do médio São Francisco, entre as cidades de Ibimirim e Cabrobó (Pernambuco/Brasil). A presença desses conflitos, associada ao colapso ambiental causado pelo neoextrativismo local e ao clima árido, são fortes indícios para influenciarem a dinâmica populacional. Porém, o contrário é observado na região. A manutenção da população na região é corroborada pelo baixo valor de emigração e pelas narrativas. Por isso, variáveis ambientais e sociais foram coletadas e analisadas para avaliar se a ausência de uma dinâmica populacional é motivada por uma resistência social. Assim, o objetivo deste trabalho foi analisar o contexto ambiental e a narrativa de quem ficou no colapso da matéria-prima na Caatinga Árida pós-neo-extrativismo, onde se pôde notar que a manutenção da população na região trata-se de uma expressão da resistência social local, na interface entre parâmetros ambientais e sociais analisados. A preservação da herança familiar (patrimonialismo) foi considerada o principal destaque nas narrativas dos sertanejos.Palavras-chave: mobilização social; desertificação; neoextrativismo. ABSTRACT:The analyzed region is historically a place of conflict and a 'founding violence', situated above São Francisco River, between the cities of Ibimirim and Cabrobó (Pernambuco/Brazil). The presence of those conflicts, associated with the environmental collapse, caused by the new local extractiv and arid climate, are strong evidence to act on population dynamics. However, the opposite is observed in the region. The maintenance of population there is supported by the low value of emigration and by narratives. Therefore, environmental and social variables were collected and analyzed to assess whether a social resistance motivates the lack of population dynamics. The objective of this study was to analyze the environmental context and the narratives of who remained in collapse of raw material in Arid Caatinga post the new extractivism. Where one might note that the maintenance of the population in the region is an expression of local social resistance, on the

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“…The relationship between vegetation and environment has been a subject of many ecological studies in history (ter Braak, 1987;El-Ghareeb and Shabana, 1990;Dargie and El-Demerdash, 1991;McDonald et al, 1996;Abbadi and El-Sheikh, 2002;Vogiatzakis et al, 2003;Jafari et al, 2004), and understanding the different ecological processes among stratal layers has long been recognized as a key issue in plant community ecology. Most of these studies have either focused on facilitative and competitive interactions between woody and herbaceous plants (Pugnaire et al, 1996;Pugnaire and Lazaro, 2000;Holzapfel and Mahall, 1999;Maestre et al, 2003), or on feedbacks in the dynamics of plant communities.…”

Section: Introductionmentioning

confidence: 99%

Differential responses of shrubs and herbs present at the Upper Minjiang River basin (Tibetan Plateau) to several soil variables

Lü

Zhang

et al. 2006

Journal of Arid Environments

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Vertical structure in plant communities is well recognized, but questions remain about the response of different stratal layers in a plant community to resource use. This study provides a quantitative approach to compare the relationships of nine edaphic factors and species distributions in shrub and herb layers, respectively, in an arid valley of the upper Minjiang River, Sichuan Province, China. Classification (TWINSPAN) determined three groups of shrubs and four groups of herbs. Ordination (both DCA and DCCA) found a correlation among species and edaphic variables. Borcard's method [Borcard, D., Legendre, P., Drapeau, P., 1992. Partialling out the spatial component of ecological variation. Ecology 73, 1045-1055.] was employed to partition the variation of species abundance data into independent components: pure spatial, pure environmental, spatial component of environmental influence, and undetermined. Based on those four components, a quantitative comparison of ecological variation between shrubs and herbs further eluidated their different response to the environment. Although soil moisture (SM) content, pH, soil organic matter (OC) and available potassium (AK) were the most important factors to both, the explained ecological variation of herbs was lower than that of shrubs. Understanding differences between stratal layers in resource use can shed light on plant-environment relationships. r

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Vegetation analysis of Failaka Island (Kuwait)

Cited by 43 publications

References 9 publications

Floristic diversity and vegetation analysis of Wadi Al-Noman, Mecca, Saudi Arabia

Floristic diversity and vegetation analysis of Wadi Al-Noman, Mecca, Saudi Arabia

Resistência social na Caatinga árida: a narrativa de quem ficou no colapso ambiental

Differential responses of shrubs and herbs present at the Upper Minjiang River basin (Tibetan Plateau) to several soil variables

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