Breeding success plays a crucial role in the dynamics of bird populations and yet is the least-studied avian life-stage. Habitat quality during breeding phase may have important implications for survival and conservation, particularly for declining populations in landscapes that have undergone wide-scale human modification. The European Turtle dove is a widespread but fast declining species both in breeding and wintering zones. Reduced food availability is thought to influence breeding success of this game species, but it is not known how agriculture practices could influence breeding Doves, in its high altitude breeding zones. Here, we monitored Turtle dove nests in apple orchards from early Marsh to the end of October 2015. Nest-tree support, breeding success, and predation were determined and analysed depending on agricultural practices. Compared to prune, cherry and other plantation, apple orchards had the highest overall Turtle doves' nests (85%). However, 60% of recorded nests were located on Golden delicious, where are noted the highest nesting success rates (respectively 77.6% and 57.9% for eggs and chicks). However, Turtle dove showed high rate of nesting failure in the Midelt region, more especially in apple orchards, and this is mainly due to predation attacks, which caused a loss of 77.8% of broods, both among eggs and chicks. In addition, several farming practices in apple orchards influenced significantly nesting success of this species. In fact, this game bird does not breed in the orchards covered by hailnets. Similarly, tree pruning disturb doves nesting on apples.
The migratory time, breeding chronology, and reproductive success of the European turtle doves (Streptopelia turtur) were studied in Midelt as a high-altitude breeding habitat and Beni Mellal as a low-altitude breeding site from 2015 to 2018 in Morocco. Migration dates, breeding phenology, and breeding success were recorded from March to October for each season. As a result, during four years, arrival dates were earlier at the low breeding site, while departure dates were earlier at the high breeding site. Similarly, breeding phenology from nest building to fledging was early at low-altitude site. On the other hand, with four breeding seasons and 893 nests (467 at Midelt and 426 at Beni Mellal), average breeding success was 57% of chicks at Midelt compared to 60.15% at Beni Mellal. Moreover, at Midelt, 18.89% of eggs and 10.54% of chicks were predated, while at Beni Mellal 21.80% of eggs and 4.65% of chicks were deserted due to human disturbance. As a response, at Midelt breeding period was shorter and shifted to hot periods to ensure better reproductive success. Finally, our results highlight that the turtle dove breeding season is later and shorter at breeding highlands, which might allow this bird to avoid the vigorous climate conditions at mountains and their effect on reproductive success.
The analysis of biological diversity at a regional scale is the first step to understand and classify the biological importance of a specific region and therefore the adoption of implementing conservation strategies. We conducted weekly bird counts by using the point count method from January 2015 to December 2017 in Midelt province, Morocco. A total of 130 bird species were observed, among breeding, migrant, and wintering species belonging to 42 families. Accipitridae (15 species), Muscicapidae (9 species), and Alaudidae (9 species) were the most observed families. Order of Passeriformes was the dominant order represented with 16 families and 68 species. Moreover, five species of conservation concern were recorded such as the vulnerable European turtle dove, houbara bustard, and Dupont’s lark; the near threatened ferruginous duck and bearded vulture; and the endangered Egyptian vulture. On the other hand, the results of the diversity analysis (Margalef index, Shannon–Wiener index, and Simpson index) showed the highest diversity in wetlands, forests, steppes, and farmlands, while cliff, landfills, and urban areas were the least diversified habitats. Finally, with its geographic situation between humid Atlas and Sahara desert, as well as the diversity of habitats and avifauna, Midelt region needs advanced analysis in terms of biodiversity and environmental characteristics, in order to provide effective conservation management.
Grapevine trunk diseases (GTD) are currently one of the most devastating and challenging diseases in viticulture, leading to considerable yield losses and a remarkable decline in grapevine quality. The identification of the causal agents is the cornerstone of an efficient approach to fighting against fungal diseases in a sustainable, non-chemical manner. This review attempts to describe and expose the symptoms of each pathology related to GTD, the modes of transmission, and the harmfulness of recently reported agents. Special attention was given to new diagnostic tests and technologies, grapevine defense mechanisms, molecular mechanisms of endophytes fungal colonization, and management strategies used to control these threats. The present extended review is, therefore, an updated state-of-the-art report on the progress in the management of vineyards.
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