Diversity and distribution patterns of endophytic mycoflora of Atlas cedar (Cedrus atlantica Manetti) needles in Belezma biosphere reserve (Batna, Algeria)

Cherak, Imen; Bachir, Abdelkrim Si; Cherak, Lakhdar; Ghazi, Cherif; Loucif, Lotfi; Sellami, Mahdi

doi:10.31396/biodiv.jour.2021.12.3.573.583

Cited by 4 publications

(1 citation statement)

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“…Nevertheless, in recent years, the reserve has undergone signi cant changes in climate and land use causing, among other adverse effects, the decline of Atlas Cedar Cedrus atlantica, an endemic tree species of North Africa (Cherak et al 2021).…”

Section: Study Region and Sites Selectionmentioning

confidence: 99%

How do substrate types affect the seasonal richness and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

Meradi,

Bounar,

Benzina

et al. 2024

Biologia

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The diversity of bottom substrates is a primary driver of taxonomic richness and species abundance patterns of freshwater benthic insects in space and time. Here, we examine the in uence of substrate composition on the seasonal patterns of benthic insect communities in streams of arid regions. Benthic insects were sampled monthly over a year at three sampling sites distributed along the Bouilef stream within the Belezma biosphere reserve (Algeria). Different substrate types (sand, gravel, pebbles, boulders, and emergent macrophytes) were sampled in the rainy and dry seasons. During the 2 studied seasons, a total of 8599 insects belonging to 6 orders, 26 families, and 39 genera/species were sampled and identi ed. Student's t-test analysis showed that season in uences signi cantly the mean abundance of benthic insects, which increases in the rainy season. However, the season does not affect taxa richness. Substrate types in uence taxa composition and variation of benthic insect communities. The results showed that pebbles and boulders are the most populated by gathering and ltering collectors in terms of taxa abundance. Emergent macrophytes are more favorable for herbivores shredders. Principal Coordinates Analysis ''PCoA'' also showed that pebbles and boulders differed signi cantly from other substrates, whereas sand and gravel substrates exhibited similar taxa mean abundance. Such assessments can help propose conservation measures needed to successfully safeguard these fragile ecosystems.

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Section: Study Region and Sites Selectionmentioning

confidence: 99%

How do substrate types affect the seasonal richness and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

Meradi,

Bounar,

Benzina

et al. 2024

Biologia

Self Cite

View full text Add to dashboard Cite

show abstract

How do substrate types affect the seasonal composition and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

MERADI,

Bounar,

Benzina

et al. 2023

Preprint

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The diversity of bottom substrates is a primary driver of taxonomic richness and species abundance patterns of freshwater benthic insects in space and time. Here, we examine the influence of substrate composition on the seasonal patterns of benthic insect communities in streams of arid regions. Benthic insects were sampled monthly over a year at three sampling sites distributed along the Bouilef stream within the Belezma biosphere reserve (Algeria). Different substrate types (sand, gravel, pebbles, boulders, and emergent macrophytes) were sampled in the rainy and dry seasons. During the 2 studied seasons, a total of 8599 insects belonging to 6 orders, 26 families, and 39 genera/species were sampled and identified. Student's t-test analysis showed that season influences significantly the mean abundance of benthic insects, which increases in the rainy season. However, the season does not affect taxa richness. Substrate types influence taxa composition and variation of benthic insect communities. The results showed that pebbles and boulders are the most populated by gathering and filtering collectors in terms of taxa abundance. Emergent macrophytes are more favorable for herbivores shredders. Principal Coordinates Analysis ‘’PCoA’’ also showed that pebbles and boulders differed significantly from other substrates, whereas sand and gravel substrates exhibited similar taxa mean abundance. Such assessments can help propose conservation measures needed to successfully safeguard these fragile ecosystems.

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ENDOPHYTIC FUNGAL COMMUNITY OF ALIEN Nicotiana glauca IN TENERIFE, CANARY ISLANDS

Espinel¹,

Giménez²,

Cabrera³

2022

Rom. J. Plant. Prot.

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Nicotiana glauca it is naturally distributed throughout South America. It was introduced in North America, Europe, Africa, Asia and Oceania and arrived to the Canary Islands as an ornamental plant, where has been invading altered soils. Endophytic fungi are known to produce active compounds that provide protection to their host against diseases and attack of herbivores, these microorganisms being an interesting source of novel molecules. So far, the endophytic fungal communities of Nicotiana have not been studied in the Canary Islands. The goal of this study is to evaluate the diversity of the fungal endophytes community associated with Nicotiana glauca. A total of 36 fungal species were isolated from roots, stems and leaves of plants collected in three locations from Tenerife Island - San Miguel de Abona, Fasnia and Puerto de la Cruz. The highest species richness values were found in leaves and stems (Margalef index = 3.33 and 3.36, respectively) versus roots (Margalef index = 2.52). Simpson's index complements the results of the Margalef index, indicating a fungal community with a high dominance value in roots (D = 0.65) due to the presence of multiple Fusarium species. Fungal community in Fasnia had the highest value of species richness (Margalef index = 3.69 versus 2.17 and 2.27 for San Miguel de Abona and Puerto de la Cruz, respectively). Results indicate fungal specificity to organ and location with 13 genera isolated from a single location and organ, among which rare species like Collariella and Gelasinospora. In this study was detected and isolated for the first time in Canary Islands the fungal species Collariella hilkhuijsenii which is of importance for the ecology of this genus scarcely known. Special attention should be offered to the presence of Fusarium, which possibly relates to the alkaloid production ability of both, the plant and the fungal strains.

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Diversity and distribution patterns of endophytic mycoflora of Atlas cedar (Cedrus atlantica Manetti) needles in Belezma biosphere reserve (Batna, Algeria)

Cited by 4 publications

References 0 publications

How do substrate types affect the seasonal richness and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

How do substrate types affect the seasonal richness and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

How do substrate types affect the seasonal composition and functional feeding groups variation of benthic insects in an arid region (northeastern Algeria)?

ENDOPHYTIC FUNGAL COMMUNITY OF ALIEN Nicotiana glauca IN TENERIFE, CANARY ISLANDS

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