The vegetation of Lanzarote (Canary Islands)

Reyes‐Betancort, J. Alfredo; Torre, Wolfredo Wildpret de la; León, Márquez

doi:10.1127/phyto/31/2001/185

Cited by 30 publications

(21 citation statements)

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“…Typical of dry soils under arid climates (Rivas-Martínez et al 2001). It grows in sandy or clay soils with variable salinity, above tide level, and is frequent along roadsides, abandoned crop fields, rocky slopes, disturbed sites and maritime habitats (Reyes-Betancort et al 2001).…”

Section: Study Sitementioning

confidence: 99%

A reliable and non-destructive method for estimating forage shrub cover and biomass in arid environments using digital vegetation charting technique

Louhaichi

Hassan²,

Clifton³

et al. 2017

Agroforest Syst

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Despite the importance of fodder shrubs to small ruminant diets and production in arid and semiarid ecosystems, they are often not considered when quantifying grazing land potential. This oversight is mainly due to the time consuming and costly traditional techniques used to estimate shrub biomass. The shrub fodder component should be measured to avoid underestimation of the carrying capacity of rangelands. In this study, we present a fast, reliable and non-destructive method to estimate canopy vegetation cover to obtain aboveground shrub biomass. The experiment was conducted under field conditions in northwest Syria, where seedlings of seven shrub species were monitored for one year: Atriplex leucoclada (Moq.) Boiss., A. halimus L., A. lentiformis (Torr.) S. Watson, A. canescens (Pursh) Nutt., A. nummularia Lindl., Salsola vermiculata L. and Haloxylon aphyllum (C.A. Meyer) Bunge. The experimental layout was a randomized complete block design with five replications. We explored the effectiveness of digital vegetation charting technique (DVCT) for estimating shrub canopy cover.Aboveground shrub biomass was clipped to estimate the dry matter (DM) weight per species and to determine its relationship to canopy cover. In this study, an estimate of greenness (percent green vegetation cover) was extracted by way of greenness algorithms. Simple linear regressions between vegetation cover and biomass for 210 plots were performed. The cover of the seven species differed (P \ 0.01): A. leucoclada had the highest vegetation cover (56%) and H. aphyllum the lowest (7%). Vegetation cover and DM biomass were positively correlated (P \ 0.01) with R-squared ranging from 0.66 (H. aphyllum) to 0.84 (S. vermiculata). Our method provided reasonable estimations of canopy coverage which could predict aboveground phytomass. We conclude that DVCT offers a rapid, reliable and consistent measurement of shrub cover and biomass provided that shrubs have open architecture. This study shows the potential of digital cameras and image processing to determine cover/biomass in a nondestructive, timely and cost efficient way.

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Section: Study Sitementioning

confidence: 99%

A reliable and non-destructive method for estimating forage shrub cover and biomass in arid environments using digital vegetation charting technique

Louhaichi

Hassan²,

Clifton³

et al. 2017

Agroforest Syst

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“…[45,56,58,59,[69][70][71][72][73][74][75][76][77][78][79][80] [68,81]. Dionysietum involucratae association undoubtedly belongs to this class.…”

Section: Position Of Dionysietum Involucratae In the Syntaxonomical Smentioning

confidence: 99%

Distribution, ecology and conservation status of Dionysia involucrata Zaprjag., an endangered endemic of Hissar Mts (Tajikistan, Middle Asia)

et al. 2014

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Dionysia involucrata Zaprjag. (Primulaceae) is known as critically endangered endemic species of Hissar Mountains in Tajikistan. It is reported from few localities mainly in Varzob River valley and its tributaries. The species inhabits steep or overhanging faces of granite rocks in narrow river gorges. During the research all known populations of D. involucrata were examined in respect of the habitat conditions and species composition of vegetation plots. We analyzed the population extent of the species in its range in Tajikistan and the main threats in order to assess its conservation status. The detrended correspondence analysis was performed on a matrix of 65 relevés and 49 species (vascular plants and mosses), to classify the phytocoenosis with domination of D. involucrata according to their floristic composition in relation to other petrophytic vegetation units. Using our field data regarding present extent of occurrence and area of occupancy we conclude that the threat category of D. involucrata should be reassessed from critically endangered to endangered. The species shows decline tendency in extent of occurrence, area of occupancy as well as in number of locations. The vegetation plots with domination of D. involucrata have relatively high level of separateness due to different species composition. We define the new association -Dionysietum involucratae -representing chasmophytic vegetation of submontane and montane zone in Middle Asia (ca. 1000-1600 m a.s.l.). The plots of Dionysietum involucratae were found mainly on granite rocks, on very steep or overhanging faces, on southwestern or southern exposition. The association is rather poor in species with inconsiderable contribution of mosses. Despite the diagnostic species, Campanula incanescens, Carex koshewnikowii and Scutellaria hissarica were the most abundant and frequent taxa within the researched patches of vegetation.

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“…Cano-Ortiz et al [31]; this last association was also given in Tenerife by [16], and is near the compact group of associations. Associations 19 and 47 given in Tenerife and Lanzarote presented a distance of 87.14%, with very little similarity between them; both tables do not therefore correspond A. Cano-Ortiz et al…”

mentioning

confidence: 99%

“…(Figure 6 and Figure 7). W therefore propose a new association for Lanzarote: Soncho bourgeaui-Hirschfeldietum incanae Reyes et al ex Cano nova, and we propose as type the synthetic inventory in Table 10 published by [31]. In the case of Italy we applied the same statistical analysis as in the previous case.…”

mentioning

confidence: 99%

Soil and Phytosociological Characterisation of Grasslands in the Western Mediterranean

Cano-Ortíz¹,

Bioindi²,

Gomes³

et al. 2014

AJPS

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The vegetation of Lanzarote (Canary Islands)

Cited by 30 publications

References 0 publications

A reliable and non-destructive method for estimating forage shrub cover and biomass in arid environments using digital vegetation charting technique

A reliable and non-destructive method for estimating forage shrub cover and biomass in arid environments using digital vegetation charting technique

Distribution, ecology and conservation status of Dionysia involucrata Zaprjag., an endangered endemic of Hissar Mts (Tajikistan, Middle Asia)

Soil and Phytosociological Characterisation of Grasslands in the Western Mediterranean

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