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...率並沒有明顯的趨勢變化， 這可能與牠們在不同年份經常來往穿梭不同的區域所致。但在江豚出沒的高峰季 節，牠們在香港南面水域的整體年度遇見比率在近年卻有明顯的上升趨勢。相 反，中華白海豚在大嶼山附近水域的整體年度遇見比率在近年呈現下降的趨勢， 而且分別在海豚出現的三個主要區域(大嶼山西北、東北及西)均可發現此下降趨 勢。此外，研究員利用樣條線分析方法以估計中華白海豚在此三個區域的年度數 量，發現在 2002-10 年期間，海豚的整體數量由 2003 年最多的 158 條下降至 2010 年最少的 75 條；再利用 autocorrelation test 加以分析年度趨勢，發現海豚的數量 在三個...

...石角附近的龍鼓水 道。由於這些移動路線的存在對海豚甚為重要，因此必須加以研究，並以防將來 在大嶼山附近的一些工程影響白海豚繼續使用這些移動通道。 在 2012-13 年間，研究員在大嶼山一帶水域的水底聲音監察站，共錄取了 101 個、合共 10.16 小時的水底聲音片段。一項針對海豚哨聲的研究，利用了 2010-211 年間搜集的 13 個海豚發聲片段，共分析了 1,410 個哨聲樣本；該研究共辨別出 27 種白海豚哨聲，足證香港的中華白海豚會發出眾多不同的聲音，而其哨聲的 輪廓比其他地方的駝背豚種群更為複雜。未來的研究將集中分析白海豚哨聲，會 否因不同程度的人為噪音所影響而有所改變。 一項嶄...

... Tender Ref.: AFCD/MWFA/2021 Part 1 – Lodging of Tender - 1 - THE GOVERNMENT OF THE HONG KONG SPECIAL ADMINISTRATIVE REGION AGRICULTURE, FISHERIES AND CONSERVATION DEPARTMENT Tender for the Provision of Service of Monitoring Work on Fishing Activities to the Agriculture, Fisheries and Conservation D...

... Tender Ref.: AFCD/MWFA/2020 Part 1 – Lodging of Tender Page 1 of 1 THE GOVERNMENT OF THE HONG KONG SPECIAL ADMINISTRATIVE REGION AGRICULTURE, FISHERIES AND CONSERVATION DEPARTMENT Tender for the Provision of Service of Monitoring Work on Fishing Activities to the Agriculture, Fisheries and Conserva...

... Tender Ref.: AFCD/MWFA/2021 Part 1 – Lodging of Tender - 1 - THE GOVERNMENT OF THE HONG KONG SPECIAL ADMINISTRATIVE REGION AGRICULTURE, FISHERIES AND CONSERVATION DEPARTMENT Tender for the Provision of Service of Monitoring Work on Fishing Activities to the Agriculture, Fisheries and Conservation D...

... Tender Ref.: AFCD/MWFA/2020 Part 1 – Lodging of Tender Page 1 of 1 THE GOVERNMENT OF THE HONG KONG SPECIAL ADMINISTRATIVE REGION AGRICULTURE, FISHERIES AND CONSERVATION DEPARTMENT Tender for the Provision of Service of Monitoring Work on Fishing Activities to the Agriculture, Fisheries and Conserva...

... Issue No. 19 September 2010 www.hkbiodiversity.net Subscribing Hong Kong Biodiversity If you would like to have a copy, or if you know anyone who is interested in receiving a copy of this newsletter, please send the name, organization, and email (soft copy) or postal addresses (hard copy) to the Ar...

... Issue No. 19 September 2010 www.hkbiodiversity.net Subscribing Hong Kong Biodiversity If you would like to have a copy, or if you know anyone who is interested in receiving a copy of this newsletter, please send the name, organization, and email (soft copy) or postal addresses (hard copy) to the Ar...

... Issue No. 19 September 2010 www.hkbiodiversity.net Subscribing Hong Kong Biodiversity If you would like to have a copy, or if you know anyone who is interested in receiving a copy of this newsletter, please send the name, organization, and email (soft copy) or postal addresses (hard copy) to the Ar...

... Issue No. 19 September 2010 www.hkbiodiversity.net Subscribing Hong Kong Biodiversity If you would like to have a copy, or if you know anyone who is interested in receiving a copy of this newsletter, please send the name, organization, and email (soft copy) or postal addresses (hard copy) to the Ar...