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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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全國標準 3

Fishery; Marine fishery

切實可行的範圍內,須作為一個單元在其範圍,整個管理個別股票的魚和魚的相互關聯的股票須作為一個單元或密切協調管理。

空間異質性

Fishery; Marine fishery

非均質或性質的棲息地的生物,往往被忽視,在簡單的模型中的空間分佈。

vvsource

Fishery; Marine fishery

其中出生率高於死亡率和移民率都高於入境利率,適用于平衡人口的修補程式。一般的定義是車廂的一大段時間內 (例如 幾代人),顯示沒有淨變化中人口規模,但不過是個人的淨出口國。 ...

全國標準 5

Fishery; Marine fishery

要求"養護和管理措施,須在切實可行範圍內,考慮在漁業資源 ; 利用效率只是沒有這種措施應具有經濟分配作為其唯一的目的"。

首繩

Fishing; Marine fishery

繩或導線中的頂級翅膀和蓋網所連接的拖網的長度。

F10 %

Fishing; Marine fishery

撈死亡率減少產卵生物量 (SSB/R),10%的捕撈量目前沒有的。

濕地

Fishery; Marine fishery

部分或永久水淹、 軟底平,由維管植物的草木。

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