Nutrient and Chlorophyll at Kalt Bey Region (Alexandria) By

Nutrient and Chlorophyll at Kalt Bey Region
(Alexandria)
By
Rarnzy B. Nessim and Fatma A. Zaghloul
National Institute of Oceanography and Fisheries, Alex, Egypt.
Abstract
.si mont/J{y coUution of surface atuf 6ottom water sampfu at stlutd nine stations repruentintJ tfu polfutd 1(pit ‘Bey area an4 SWT0un4inB tfu main sewage pipefinu, was carrid out t!uring ~UJlUSt 1987 – ~u·
BUSt, 1988. ‘Determination of nutrient content; nitrate, nitrite, amnumia, t!isso£vetl inorganic pliospfuJte an4
sillicate as wt1£ as cfi{q,-opfJy{£utimation were tlone. ‘I1iespatial an4 umporal fItlriations, nutrient ratios atuf
its correlation. witr.. cfi{q,-opfly([·awere tlescribetl.
‘I1iesurface water near tfr.e sewer openinBs isgeneraffy enric”-etlwiu.. nutrient from aU.ocfr.t”-onousoritJin,
tfr.eoalues untl to t!ecrease seawartls or t!UU/nwartls.
‘I1ie cafcuiluetl P : ‘.It(: Si average ratio of 1:9:6 t!tfliatu mar6tlfy 6efow tfu normal ouanic ratio. ?{Jar
tfr.eoutja([ openings tfu «. P ratio untis to increase (17·27), int!icating tfr-atpfwspfumu couftl6e critical
tfr-annitrogen for pflytop£an~ growtn. ~way from tfu ou.tja([ tfu rtiation is Teversui.
CMoropfly([-a, -6 an4 -c swetl ratios of 1:1.4:2J. ‘I1ieirpeak! were tfetecUt! t!uring wann. SeptemPer 6eing 15.15,19.28, 48.46 TTIIJ/~’ respectivefy.
Positive correlations were cafcufiltetl 6et’UJeencfi{q,-opfly([-a ana eacfl of temperatu.re, ]XIf-value, phosphorus ant! siUicau wfiik salinity ant! water transparency swetl TltfJative com£ation coeJfoimts.