Matches in SemOpenAlex for { <https://semopenalex.org/work/W4313009618> ?p ?o ?g. }
Showing items 1 to 59 of
59
with 100 items per page.
- W4313009618 endingPage "38" @default.
- W4313009618 startingPage "25" @default.
- W4313009618 abstract "The aimed of this research were to investigate the relation of primary productivity value with the chemistry physic factor Parapat, Lake Toba. Primary productivity in Lake Toba from activity photosynthesis of done by chlorophyl. This research has been done during March 2009 at 3 sampling location around Parapat, Lake Toba. The locations research obtained base on variation activity to obtained location research. Primary productivity was measured by the Oxygen Method were two bottles with a given conceration of phytoplankton (small aqutac organism) are suspended at the depth from wich the samples were obtained. The “dark” bottle is wrapped in aluminium foil to exclude light: “light” bottle is clear. A quantity of oxygen proportional to the total organic matter fixed (gross production) is produced by photosynthesis in the light bottle. At the same time, some of oxygen is being utilized in respiration. The other analysis would be conducted to measurement such as temperature, pH, DO, BOD, COD, nitrat, fospat, chlorophyl a, abundant phytoplankton, light penetration, light intensity. The value of primary productivity range from 112,608-825,792 mgC/m3/day and with the highest value of primary productivity equal to 825,792 mgC/m3/day obtained at the depth 7 m (station I), the value of chlorophyl equal to 62,013 mg/m3 obtained at the surface (station III) and the lowest value of chlorophyl a equal to o,801 mg/m3 obtained at the depth 3,5 m (station III), beside the value of phytoplankton equal to 3306,12 ind/l obtained at the depth surface (station I) and the value of phytoplankton equal to 1469,39 ind/. According to statistical the test obtained that there no significance difference of value of primary productivity which is compared between station or depth." @default.
- W4313009618 created "2023-01-05" @default.
- W4313009618 creator A5068013552 @default.
- W4313009618 date "2020-03-01" @default.
- W4313009618 modified "2023-09-30" @default.
- W4313009618 title "The Relationship of Phytoplankton Primary Productivity Values with Physical and Chemical Factors in Parapat Waters, Lake Toba" @default.
- W4313009618 doi "https://doi.org/10.54076/jumpa.v2i1.207" @default.
- W4313009618 hasPublicationYear "2020" @default.
- W4313009618 type Work @default.
- W4313009618 citedByCount "0" @default.
- W4313009618 crossrefType "journal-article" @default.
- W4313009618 hasAuthorship W4313009618A5068013552 @default.
- W4313009618 hasBestOaLocation W43130096181 @default.
- W4313009618 hasConcept C107872376 @default.
- W4313009618 hasConcept C139719470 @default.
- W4313009618 hasConcept C142796444 @default.
- W4313009618 hasConcept C162324750 @default.
- W4313009618 hasConcept C183688256 @default.
- W4313009618 hasConcept C185592680 @default.
- W4313009618 hasConcept C18903297 @default.
- W4313009618 hasConcept C204983608 @default.
- W4313009618 hasConcept C2780892065 @default.
- W4313009618 hasConcept C39432304 @default.
- W4313009618 hasConcept C55493867 @default.
- W4313009618 hasConcept C86803240 @default.
- W4313009618 hasConcept C87717796 @default.
- W4313009618 hasConceptScore W4313009618C107872376 @default.
- W4313009618 hasConceptScore W4313009618C139719470 @default.
- W4313009618 hasConceptScore W4313009618C142796444 @default.
- W4313009618 hasConceptScore W4313009618C162324750 @default.
- W4313009618 hasConceptScore W4313009618C183688256 @default.
- W4313009618 hasConceptScore W4313009618C185592680 @default.
- W4313009618 hasConceptScore W4313009618C18903297 @default.
- W4313009618 hasConceptScore W4313009618C204983608 @default.
- W4313009618 hasConceptScore W4313009618C2780892065 @default.
- W4313009618 hasConceptScore W4313009618C39432304 @default.
- W4313009618 hasConceptScore W4313009618C55493867 @default.
- W4313009618 hasConceptScore W4313009618C86803240 @default.
- W4313009618 hasConceptScore W4313009618C87717796 @default.
- W4313009618 hasIssue "1" @default.
- W4313009618 hasLocation W43130096181 @default.
- W4313009618 hasOpenAccess W4313009618 @default.
- W4313009618 hasPrimaryLocation W43130096181 @default.
- W4313009618 hasRelatedWork W1971452188 @default.
- W4313009618 hasRelatedWork W1979747663 @default.
- W4313009618 hasRelatedWork W2001704848 @default.
- W4313009618 hasRelatedWork W2008443666 @default.
- W4313009618 hasRelatedWork W2009398178 @default.
- W4313009618 hasRelatedWork W2323238909 @default.
- W4313009618 hasRelatedWork W2460992988 @default.
- W4313009618 hasRelatedWork W2899084033 @default.
- W4313009618 hasRelatedWork W3118961085 @default.
- W4313009618 hasRelatedWork W4240516184 @default.
- W4313009618 hasVolume "2" @default.
- W4313009618 isParatext "false" @default.
- W4313009618 isRetracted "false" @default.
- W4313009618 workType "article" @default.