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Speleology
Speleology (also spelled spelæology or spelaeology) is the scientific study of caves and other karst features, their make-up, structure, physical properties, history, life forms, and the processes by which they form (speleogenesis) and change over time (speleomorphology). The term speleology is also sometimes applied to the recreational activity of exploring caves, but this is more properly known as caving, spelunking or potholing. Speleology and caving are often connected, as the physical skills required for in situ study are the same. Speleology is a cross-disciplinary field that combines the knowledge of chemistry, biology, geology, physics, meteorology and cartography to develop portraits of caves as complex, evolving systems.
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暫態率死亡率 (Z)
Fishery; Marine fishery
當釣魚和自然死亡率為死亡或者自然原因 (暫態率自然死亡率,M) 或由於漁撈死亡率 (F 捕魚,死亡率的暫態率) 同時,行事 (帶有符號更改) 成活率的自然對數。的總死亡率、 Z、 暫態速度是這兩個數字的總和: Z = F + M,也稱為減少的係數。 ...
最大持續產量 (最大持續產量)
Fishery; Marine fishery
最大平均 catch 或不斷取自一隻股票在現有的環境條件下的產量。的脈動招聘的物種,最大可能獲得比在其他一些年以較少的魚。也被稱為: 最大平衡 catch ; 最大持續產量 ; 可持續漁獲量。 ...