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Using the Lonsdorf model for estimating habitat loss and fragmentation effects on pollination service

Ecological Processes 2021年第1期10卷 303-315页

作者： Ehsan Rahimi Shahindokht Barghjelveh Pinliang Dong Environmental Research Institute Shahid Beheshti UniversityTehranIran Department of Geography and the Environment University of North TexasDentonTexasUSA.

One of the most important issues related to landscape ecology and ecosystem services is finding the pattern of habitat patches that offers the highest pollination in agricultural *** this regard,two processes of habitat loss and fragmentation strongly affect the relationship between pollination and the pattern of habitat *** the present study,we aimed to examine the effects of habitat loss and fragmentation on pollination *** this purpose,first,we generated different simulated agricultural landscapes,including two habitats of forest and ***,according to the Lonsdorf model,we estimated the potential of the simulated landscapes in providing pollination in different ***,using statistical models,we estimated the effects of habitat loss and fragmentation on pollination at the landscape and farm *** results showed that the effects of habitat loss and fragmentation on pollination were completely different at the landscape and farm *** the landscape level,fragmentation negatively affected pollination,but at the farm level,the maximum pollination rate was observed in the landscapes with a high degree of *** the habitat loss effects,our results showed that pollination decreased linearly at the landscape level as habitat amount decreased,but at the farm level,it decreased *** present study considered the level of analysis(i.e.,landscape and farm levels)as a critical factor affecting pollination changes caused by *** showed that using the Lonsdorf model could lead to confusing results for the landscape ecologists and alert farmers who want to reduce the adverse effects of fragmentation on their products by creating new forest ***,agriculturalists and landscape ecologists should consider that the pollination rate at the landscape and farm levels is completely different according to the model and provide contradictory results about the process of habita

关键词： Landscape ecology pollination service Habitat loss Fragmentation Landscape metrics Lonsdorf model

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Shea Parklands pollination in Burkina Faso, Some Techniques to Improve the Production

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Open Journal of Ecology 2023年第9期13卷 597-605页

作者： Issa Nombré Issaka W. Kanazoé Latif Iddrisu Nasare Adama Nana Joseph I. Boussim Institut des Sciences et de Technologie/Ecole Normale Supérieure Ouagadougou Burkina Faso Laboratoire de Biologie et Ecologie Végétales Université Joseph KI-ZERBO Ouagadougou Burkina Faso Faculty of Natural Resources and Environment University for Development Studies Tamale Ghana Association des Amis de la Nature (NATURAMA) Ouagadougou Burkina Faso

Shea tree is a major economic plant contributing to household income through the sale of edible fruits, kernels and shea butter. Shea butter is used industrially in the production of cosmetic products, chocolates and margarines. Fruits are used by human and also by birds. This study aimed to explore strategies for the improvement of shea yield through pollination. Two types of pollination (manual and natural pollination) were applied for the comparison of fruits set and their ripening. The fruits set and ripening index as well as average weight of ripe fruits and kernels were estimated. The results showed a significant difference between the fruits set Index of manual pollination and natural pollination (H(1) = 33.437, p = 7.361 × 10-9). Similarly, there was a significant difference between the ripening Index of manual pollination and natural pollination (H(1) = 4.5113, p = 0.03367). However, the mode of pollination did not influence the weight of ripe fruits and kernels. Therefore, the manual pollination enhances pollen supply to receptive stigmas for fertilization and improved fruit yield in Vitellaria paradoxa.

关键词： pollination service Shea Tree Beekeeping Foraging Activity Pollinators Burkina Faso

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