Abstract:Laid Ouakid a , Abdelkrim Tahraoui a Résumé : La faune entomologique est un élément essentiel dans la dynamique et le fonctionnement des écosystèmes forestiers. Le rôle écologique ainsi que le caractère bio-indicateur de certaines espèces d'insectes peuvent indiquer l'état sanitaire des forêts et déterminer certains facteurs liés à la dégradation de celles-ci. Au niveau des subéraies Algériennes, de nombreuses attaques d'insectes touchant principalement les feuilles, les fruits ainsi que le tronc du chêne ont … Show more
“…Larvae grow in the small living layer just under the bark, https://doi.org/10.17221/77/2021-JFS where the sap circulates and where cork is made, as for Lymantria dispar (spawning, aged caterpillars and chrysalises) (Villemant, Fraval 1993). In addition, Daas et al (2016) reported that the larvae of several Scarabaeidae develop in the rotten wood of old oaks (injured or even dead), as well as in stumps, and in the compost that forms in their hollows.…”
Section: Discussionmentioning
confidence: 99%
“…Such biotic agents include insect pests which attack leaves, fruits and trunks. According to Daas et al (2016), the action of some phytophagous beetles (e.g., Curculionidae, Tortricinae and Lymantriinae) is one of the main causes of defoliation; xylophages weaken the trees, and gland pests have a direct impact on regeneration.…”
In recent years, the cork oak forests that characterise the Mediterranean region have been exposed to various factors that result in their degradation. These cork oak trees, due to increasingly accentuated anthropogenic activity, undergo withering at different scales.The objective of the study is to assess the impact of various factors that degrade cork oak forests in the Mediterranean region located in northeastern Algeria, and this was achieved by prospecting 22 sampling locations. This allowed the creation of a database containing 745 trees that were observed and 27 measured variables. Different readings were then taken into consideration based on measurements and sometimes on ratings. The impact of several biotic and abiotic factors, which affect and damage the health of cork oak, was identified. These factors include in particular the infestations by xylomycetophagous insects such as Platypus cylindrus and Xyleborus sp., which can potentially infest the cork oak trees that we observed one year after bark harvesting. On the other hand, the stationary descriptors such as altitude, slope, exposure, etc., are important for the dendrometric and exploitation characteristics, but their unfavourable values do not necessarily lead to tree mortality; for example, medium to low slopes, associated with average altitudes of 600 m a.s.l., may ensure the healthiest trees like in our case study. Finally, we were able to find that certain decline factors may affect a particular category of trees, either because they are older, taller or have a large girth, or because they are subject to inadequate debarking.
“…Larvae grow in the small living layer just under the bark, https://doi.org/10.17221/77/2021-JFS where the sap circulates and where cork is made, as for Lymantria dispar (spawning, aged caterpillars and chrysalises) (Villemant, Fraval 1993). In addition, Daas et al (2016) reported that the larvae of several Scarabaeidae develop in the rotten wood of old oaks (injured or even dead), as well as in stumps, and in the compost that forms in their hollows.…”
Section: Discussionmentioning
confidence: 99%
“…Such biotic agents include insect pests which attack leaves, fruits and trunks. According to Daas et al (2016), the action of some phytophagous beetles (e.g., Curculionidae, Tortricinae and Lymantriinae) is one of the main causes of defoliation; xylophages weaken the trees, and gland pests have a direct impact on regeneration.…”
In recent years, the cork oak forests that characterise the Mediterranean region have been exposed to various factors that result in their degradation. These cork oak trees, due to increasingly accentuated anthropogenic activity, undergo withering at different scales.The objective of the study is to assess the impact of various factors that degrade cork oak forests in the Mediterranean region located in northeastern Algeria, and this was achieved by prospecting 22 sampling locations. This allowed the creation of a database containing 745 trees that were observed and 27 measured variables. Different readings were then taken into consideration based on measurements and sometimes on ratings. The impact of several biotic and abiotic factors, which affect and damage the health of cork oak, was identified. These factors include in particular the infestations by xylomycetophagous insects such as Platypus cylindrus and Xyleborus sp., which can potentially infest the cork oak trees that we observed one year after bark harvesting. On the other hand, the stationary descriptors such as altitude, slope, exposure, etc., are important for the dendrometric and exploitation characteristics, but their unfavourable values do not necessarily lead to tree mortality; for example, medium to low slopes, associated with average altitudes of 600 m a.s.l., may ensure the healthiest trees like in our case study. Finally, we were able to find that certain decline factors may affect a particular category of trees, either because they are older, taller or have a large girth, or because they are subject to inadequate debarking.
“…Tribe Cetoniini Leach, 1815 Oxythyrea funesta Poda von Neuhaus, 1761 Regional distribution: from the Mediterranean coast to the northern edge of the Sahara (Baraud, 1985;Mitter, 2011;Chavanon et al, 2015;Tamadouni and Arahou, 2017;Vondráček et al, 2018;Chavanon, 2020). General distribution: Palaearctic species: most of Europe up to the Ural Mountains and the Caucase, North Africa, Cyprus, Iran, Kazakhstani, Turkey and West Siberia (Bunalski, 1999;Silfverberg, 2004;Šablevičius, 2004Bukejs et al, 2006;Horak et al, 2009Horak et al, , 2013Pivotti et al, 2011;Barclay and Notton, 2013;Tamutis and Dapkus, 2014;Daas et al, 2016;Thomaes et al, 2016;Löbl and Löbl, 2016;Vondráček et al, 2018;Zemouri et al, 2021).…”
Section: Family Scarabaeidae Subfamily Cetoniinae Leach 1815mentioning
Beetles play an important role in agrosystems as bioindicators of quality, ecology, conservation, and soil characteristics. The Coleoptera of agrosystems in Morocco are poorly known. To contribute to the knowledge of beetles in this country we conducted a survey in a region of North-West Morocco between 2019 and 2020. The inventory was carried out using several types of traps. We identified 54 species belonging to 14 families, 20 subfamilies, and 18 tribes. The most abundant family was Carabidae, with 24 species, and the most dominant subfamily was Harpalinae, with 19 species. This work provides the first checklist of coleopteran fauna associated with agrosystems in North-West Morocco. We provide an identification key of subfamily and tribe, and update information on the distribution of the beetles identified.
Checklist dataset published through GBIF (Doi: 10.15470/ohymvn)
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