There were marked changes in the pl

There were marked changes in the plankton community north of Iceland during
the formation of the GSA. Astthorsson et al. (1983) showed that on various
sections off the north coast of Iceland the primary production measured at 10 m
depth in spring averaged 2.6 mg C m−3 h−1 during 1958–64, but between 1965 and
1971 it was only 0.7 mg C m−3 h−1. During the same periods, the volume of zooplankton
obtained from a standard net haul changed from 10–30 mL per haul to
less than 5 mL. They speculated that the presence of the cold, low-salinity water
caused a year-round stratification that prevented the renewal of nutrients in the
surface layers prior to the spring bloom. This restraint in turn led to greatly reduced
primary production and consequently a greatly reduced build-up of zooplankton
populations.

Hasil (Bahasa Indonesia) 1:

Ada ditandai perubahan dalam masyarakat plankton Utara Islandia selamapembentukan GSA. Astthorsson et al. (1983) menunjukkan bahwa pada berbagaiBagian dari pantai utara Islandia produksi utama diukur pada 10 mkedalaman musim semi rata-rata 2.6 mg C m−3 h−1 selama tahun 1958-64, tetapi antara tahun 1965 dan1971 itu hanya 0.7 mg C m−3 h−1. Selama periode yang sama, volume zooplanktonDiperoleh dari jarak bersih standar yang berubah dari 10 – 30 mL per jarak untukkurang dari 5 mL. Mereka berspekulasi bahwa keberadaan air dingin, rendah-salinitasdisebabkan stratifikasi sepanjang tahun yang mencegah pembaruan nutrisi dalamlapisan permukaan sebelum musim semi bloom. Pengekangan ini pada gilirannya menyebabkan sangat berkurangproduksi primer dan akibatnya sangat mengurangi penumpukan zooplanktonpopulasi.