<commit_before># I.06 primary productivity
Original indicator name: requirement of primary productivity<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>

### Themes
Fishery resources
### PSBR model type
State (S)
### Corresponding targets
#### SDGs
14.2 Ensure the sustainable management and protection of marine and coastal ecosystems
#### Aichi Biodiversity Targets:
Target 6 By 2020 all fish and invertebrate stocks and aquatic plants are managed and harvested sustainably, legally and applying ecosystem based approaches, so that overfishing is avoided, recovery plans and measures are in place for all depleted species, fisheries have no significant adverse impacts on threatened species and vulnerable ecosystems and the impacts of fisheries on stocks, species and ecosystems are within safe ecological limits.
### Background
海洋基礎生產力的大小，是評估一海域漁業生產力的基本參數，就實際上應用而言，將實測得到的基礎生產力和利用漁業統計年報求得的基礎生產力與基礎生產力 (primary production required to sustain fisheries, PPR) 相較，探討臺灣漁場是否有過漁之情形。
### Definition and Calculation

$$ PPR=(Catches/9)\times10^{n-1} $$

農委會水產試驗所在台灣周邊海域固定62個測站長期監測葉綠素 a (chlorophyll a; 葉綠素甲)濃度，其調查方法為於臺灣周邊海域62個測站按季採集水樣，葉綠素 a 分別使用10 μm篩絹及0.7 μm濾膜，逐級過濾浮游植物後遮光冷凍 (-20ºC) 保存攜回實驗室，將濾後濾膜經90%丙酮低溫萃取 14-24 小時後，以螢光光度計測定酸化前後的螢光值，計算出海域中葉綠素 a 含量。
### Updates
過去無可對應資料，目前以水試所在台灣周邊海域固定62個測站長期監測之葉綠素a濃度為資料內容。
### Data Management Authorities
Fisheries Research Institute, Council of Agriculture, Executive Yuan
### Data Source/URL
[行政院環境保護署－環境資源資料開放平臺](https://opendata.epa.gov.tw)
#### The name of data set
[台灣周邊海域葉綠素甲平均濃度](https://opendata.epa.gov.tw/Data/Contents/WAT00497/)<commit_msg>New translations I.06「基礎生產力」.md (English, United States)<commit_after># I.06 primary productivity
Original indicator name: requirement of primary productivity<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>

### Themes
Fishery resources
### PSBR model type
State (S)
### Corresponding targets
#### SDGs
14.2 Ensure the sustainable management and protection of marine and coastal ecosystems
#### Aichi Biodiversity Targets:
Target 6 By 2020 all fish and invertebrate stocks and aquatic plants are managed and harvested sustainably, legally and applying ecosystem based approaches, so that overfishing is avoided, recovery plans and measures are in place for all depleted species, fisheries have no significant adverse impacts on threatened species and vulnerable ecosystems and the impacts of fisheries on stocks, species and ecosystems are within safe ecological limits.
### Background
海洋基礎生產力的大小，是評估一海域漁業生產力的基本參數，就實際上應用而言，將實測得到的基礎生產力和利用漁業統計年報求得的基礎生產力與基礎生產力 (primary production required to sustain fisheries, PPR) 相較，探討臺灣漁場是否有過漁之情形。
### Definition and Calculation

$$ PPR=(Catches/9)\times10^{n-1} $$

農委會水產試驗所在台灣周邊海域固定62個測站長期監測葉綠素a濃度，其調查方法為於臺灣周邊海域62測站按季採集水樣，葉綠素甲 (Chl-a) 分別使用10 μm篩絹及0.7 μm濾膜，逐級過濾浮游植物後遮光冷凍 (-20℃) 保存攜回實驗室，將濾後濾膜經90%丙酮低溫萃取 14-24 小時後，以螢光光度計測定酸化前後的螢光值，計算出海域中葉綠素甲含量。
### Updates
過去無可對應資料，目前以水試所在台灣周邊海域固定62個測站長期監測之葉綠素a濃度為資料內容。
### Data Management Authorities
Fisheries Research Institute, Council of Agriculture, Executive Yuan
### Data Source/URL
[Environment Resource of the Government’s Open Data platform from Environmental Protection Administration, Executive Yuan](https://opendata.epa.gov.tw)
#### The name of data set
[Average chlorophyll a concentration in Taiwan' s adjacent sea areas](https://opendata.epa.gov.tw/Data/Contents/WAT00497/)
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