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Sử Dụng Tầng Vi Mô Của Khỉ Colobus Angolensis Ruwenzorii Tại Nabugabo, Uganda Cho Thấy Đặc Điểm Biến Đổi Trong Loài
Tóm tắt
Sự thay đổi lớn về môi trường do con người gây ra đang khiến việc nghiên cứu sử dụng môi trường sống trở nên thiết yếu, nhằm hiểu rõ hơn về các nhu cầu sinh thái cơ bản của loài để đưa ra các kế hoạch bảo tồn thành công. Một số loài có yêu cầu về môi trường sống rất linh hoạt. Một trong những loài đó có thể là Colobus angolensis ruwenzorii, khỉ sống trong rừng núi và rừng nhiệt đới thấp. Tại các vùng núi phía tây nam Rwanda, loài này dành phần lớn thời gian trên mặt đất và chủ yếu ăn lá trưởng thành và địa y, nhưng thông tin về việc sử dụng môi trường sống của các quần thể ở độ cao thấp hơn vẫn chưa được biết đến. Chúng tôi đã nghiên cứu việc sử dụng môi trường sống ở quy mô cỡ nhỏ của C. a. ruwenzorii tại Nabugabo, Uganda (độ cao 1136 m), nơi chúng chủ yếu ăn lá non và trái cây. Chúng tôi đã sử dụng dữ liệu được thu thập trong 9 tháng (94 ngày từ tháng 7 năm 2017 đến tháng 4 năm 2018) trên 117–131 con khỉ colobus trong 12 đơn vị lõi của một xã hội đa tầng. Chúng tôi phát hiện rằng các cá thể colobus hiếm khi ở dưới mặt đất, và hành vi nghỉ ngơi và xã hội xảy ra ở độ cao lớn hơn và trong những cây lớn hơn so với hành vi ăn và di chuyển. Độ cao cá nhân trong tán cây có một mẫu theo thời gian (cao hơn vào đầu và cuối ngày, với sự giảm xuống ở giữa ngày) và colobus ở độ cao thấp hơn khi quy mô nhóm lớn hơn do sự hợp nhất đơn vị lõi. Cuối cùng, chúng tôi thấy rằng các loài cây thường được sử dụng tương ứng với sự có mặt của chúng trong rừng và giá trị của chúng như các loài thực phẩm. Với nguy cơ bị động vật ăn thịt lớn hơn trong các nhóm nhỏ và thấp hơn trong tán cây tại địa điểm này, các kết quả của chúng tôi gợi ý rằng nguy cơ cảm nhận có ảnh hưởng quan trọng đến việc sử dụng tầng vi mô trong C. a. ruwenzorii ở độ cao thấp hơn. Những phát hiện của chúng tôi cho thấy tính linh hoạt về sinh thái của loài linh trưởng này, điều này là một tín hiệu tích cực cho việc bảo tồn liên tục của chúng.
Từ khóa
#Colobus angolensis ruwenzorii #sử dụng môi trường sống #bảo tồn #động vật linh trưởng #sinh thái họcTài liệu tham khảo
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