Đa dạng sinh học của tảo đất trong các cánh đồng ở miền Trung Đài Loan

Ching-Su Lin1, Tsuan-Ling Chou1, Jiunn‐Tzong Wu2
1Institute of Ecology and Evolutionary Biology, National Taiwan University, 1, Roosevelt Road Section 4, Taipei, 106, Taiwan
2Biodiversity Research Center, Academia Sinica, 128, Academia Road Section 2, Nankang, Taipei, 115, Taiwan

Tóm tắt

Tóm tắtĐặt vấn đề

Thông tin về tảo đất ở Đài Loan rất hạn chế. Trong nghiên cứu này, chúng tôi đã điều tra lần đầu tiên về tảo đất cư trú trong năm loại đất nông nghiệp ở miền Trung Đài Loan: ruộng lúa, trang trại rau, đồn điền trà, trang trại mía và vườn cây ăn trái.

Kết quả

Sáu mươi bốn loại được xác định thuộc 33 chi của vi sinh vật lam, tảo silic, tảo xanh và Euglenoids dựa trên cấu trúc tinh vi được quan sát dưới kính hiển vi quang học và điện tử, cũng như phân tích chuỗi rDNA. Phần lớn các mẫu phân lập thuộc các chi Oscillatoria, Navicula, Nitzschia, và Pinnularia. Năm loài được ghi nhận lần đầu tiên ở Đài Loan, bao gồm Microcoleus paludosus, M. subtorulosus, Navicula subminuscula, Nitzschia levidensisNi. pusilla.

Kết luận

Sự phân bố và đa dạng của các loài này cho thấy bị phụ thuộc mạnh mẽ vào môi trường sống, với sự đa dạng tảo xanh cao nhất trong vườn cây ăn trái, sự đa dạng tảo silic và vi sinh vật lam tương đối cao trong ruộng lúa, và sự đa dạng tương đối thấp trong các đồn điền trà và trang trại mía. Độ ẩm và độ axit được xác định là các yếu tố môi trường quan trọng nhất ảnh hưởng đến sự đa dạng của tảo đất trong các cánh đồng này.

Từ khóa


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