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Title {'en': 'Bald eagles as vectors of marine nutrients – Central Coast Islands (100 Islands study area) – May – July 2017', 'fr': "Les pygargues à tête blanche en tant que vecteurs d'éléments nutritifs marins — îles de la côte centrale (zone d'étude des 100 îles) — mai — juillet 2017"}
URL ca-cioos_6ebe47c3-6d59-4cb2-a7ba-111698445d8d
Description {'en': 'In this observational study, we quantify the relationship between eagle activity, soil chemistry, and vegetation composition. This dataset consists of plot description, eagle and reference tree information, vegetation data, and soil chemistry data. Data is in tabular form.\n\nBased on foraging behavior and nesting habits, I propose that bald eagles (Haliaeetus leucocephalus) are an important vector of marine nutrient transfer. Although their diet is largely marine-based, bald eagles generally consume their prey on land. This behavior results in deposition of guano and prey remains that are likely chemically or nutritionally similar to seabird guano and may produce similar ecological responses. Altered soil characteristics may include increased concentration of marine-derived nitrogen (δ15N), total nitrogen, and phosphorous, and decreased pH. Previous research shows a correlation between changes in soil chemistry and an increase in plant biomass and decrease in plant species richness at seabird colony sites, presumably because certain plant species were able to dominate under high nutrient-low pH conditions. If long-term additions of nitrogen from bald eagle guano and prey remains do change soil chemistry, a shift toward more nitrophilous species may be most evident in the homogenous, salal-dominated understories of Central Coast islands.', 'fr': "Dans cette étude d'observation, nous quantifions la relation entre l'activité des aigles, la chimie du sol et la composition de la végétation. Ce jeu de données comprend la description des placettes, des informations sur les aigles et les arbres de référence, des données sur la végétation et des données chimiques Les données sont présentées sous forme de tableau.\n\nSur la base du comportement alimentaire et des habitudes de nidification, je propose que le pygargue à tête blanche (Haliaeetus leucocephalus) est un important vecteur de transfert des nutriments marins. Bien que leur régime alimentaire soit essentiellement marin, les pygargues à tête blanche consomment généralement leurs proies sur la terre ferme. Ce comportement entraîne le dépôt de restes de guano et de proies qui sont probablement similaires sur le plan chimique ou nutritionnel au guano des oiseaux de mer et peuvent produire des réactions écologiques similaires. Les modifications des caractéristiques du sol peuvent inclure une concentration accrue d'azote d'origine marine (Δ15N), d'azote total et de phosphore, ainsi qu'une baisse du pH. Des recherches antérieures ont montré une corrélation entre les changements dans la chimie du sol et une augmentation de la biomasse végétale et une diminution de la richesse en espèces végétales sur les sites de colonies d'oiseaux de mer, probablement parce que certaines espèces végétales étaient capables de dominer dans des conditions de pH élevé et faible en nutriments. Si les ajouts à long terme d'azote provenant du guano de pygargue à tête blanche et des restes de proies modifient la chimie du sol, un changement vers des espèces plus nitrophiles pourrait être plus évident dans les sous-étages homogènes dominés par les salals des îles de la côte centrale."}
Keywords {'en': ['oceans', 'downloadable-data', '100-islands', 'marine-derived-nutrients', '15n', 'bald-eagle', 'haliaeetus-leucocephalus', 'plant-composition', 'stable-isotopes', 'vegetation', 'community-ecology', 'phosphorus', 'potassium', 'nitrogen', 'soil-ph', 'british-columbia', 'eagle', 'marine', 'nutrient', 'other', 'nutrients'], 'fr': ['nutriments']}
Ocean Variables
  • Nutrients
  • Other
Citation [{\"type\": \"dataset\", \"id\": \"ca.cioos_6ebe47c3-6d59-4cb2-a7ba-111698445d8d\", \"author\": [{\"given\": \"Luba\", \"family\": \"Reshitnyk\"}], \"issued\": [{\"date-parts\": [\"2022\", \"01\", \"24\"]}], \"abstract\": \"In this observational study, we quantify the relationship between eagle activity, soil chemistry, and vegetation composition. This dataset consists of plot description, eagle and reference tree information, vegetation data, and soil chemistry data. Data is in tabular form.\n\nBased on foraging behavior and nesting habits, I propose that bald eagles (Haliaeetus leucocephalus) are an important vector of marine nutrient transfer. Although their diet is largely marine-based, bald eagles generally consume their prey on land. This behavior results in deposition of guano and prey remains that are likely chemically or nutritionally similar to seabird guano and may produce similar ecological responses. Altered soil characteristics may include increased concentration of marine-derived nitrogen (\u03b415N), total nitrogen, and phosphorous, and decreased pH. Previous research shows a correlation between changes in soil chemistry and an increase in plant biomass and decrease in plant species richness at seabird colony sites, presumably because certain plant species were able to dominate under high nutrient-low pH conditions. If long-term additions of nitrogen from bald eagle guano and prey remains do change soil chemistry, a shift toward more nitrophilous species may be most evident in the homogenous, salal-dominated understories of Central Coast islands.\", \"publisher\": \"\", \"title\": \"Bald eagles as vectors of marine nutrients \u2013 Central Coast Islands (100 Islands study area) \u2013 May \u2013 July 2017\", \"language\": \"en\", \"URL\": \"https://catalogue.hakai.org/dataset/ca-cioos_6ebe47c3-6d59-4cb2-a7ba-111698445d8d?local=en\"}]
License CC-BY-4.0
Scope Dataset
Status On Going
Topic Category oceans
Associated Datasets
Metadata Dates
Metadata Date 1
Date
2022-01-13
Type
Revision
Metadata Date 2
Date
2022-01-24
Type
Publication
Resource Dates
Resource Date 1
Date
2017-05-20
Type
Creation
Maintenance and update frequency As Needed
Maintenance Note Generated from https://cioos-siooc.github.io/metadata-entry-form
Point of Contact
Point of Contact 1
Name
Becky Miller
Affiliation
University of Victoria
Email
beckymiller.uvic@gmail.com
Role
Point of Contact
Point of Contact 2
Name
Luba Reshitnyk
Affiliation
Hakai Institute
Email
luba.reshitnyk@hakai.org
Role
  • Custodian
  • Point of Contact
Responsible Party
Responsible Party 1
Name
Luba Reshitnyk
Affiliation
Hakai Institute
Email
luba.reshitnyk@hakai.org
Role
Owner
Distributor
Distributor 1
Name
Becky Miller
Affiliation
University of Victoria
Email
beckymiller.uvic@gmail.com
Role
Distributor
Spatial Extent { "coordinates": [ [ [ -128.58323147, 51.38160352 ], [ -127.80979387, 51.38160352 ], [ -127.80979387, 52.09997599 ], [ -128.58323147, 52.09997599 ], [ -128.58323147, 51.38160352 ] ] ], "type": "Polygon" }
North Bounding Latitude 52.09997599
South Bounding Latitude 51.38160352
East Bounding Longitude -127.80979387
West Bounding Longitude -128.58323147
Temporal Extent
Begin
2017-05-20
End
2017-07-19
Vertical Extent
Min
0.0
Max
0.0
Default Locale English
Citation identifier
XML Metadata File Location https://pac-dev1.cioos.org/dev/metadata/hakai/bald_eagles_as_vectors_of_mari_6ebe4.xml
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This dataset consists of plot description, eagle and reference tree information, vegetation data, and soil chemistry data. Data is in tabular form. Based on foraging behavior and nesting habits, I propose that bald eagles (Haliaeetus leucocephalus) are an important vector of marine nutrient transfer. Although their diet is largely marine-based, bald eagles generally consume their prey on land. This behavior results in deposition of guano and prey remains that are likely chemically or nutritionally similar to seabird guano and may produce similar ecological responses. Altered soil characteristics may include increased concentration of marine-derived nitrogen (δ15N), total nitrogen, and phosphorous, and decreased pH. Previous research shows a correlation between changes in soil chemistry and an increase in plant biomass and decrease in plant species richness at seabird colony sites, presumably because certain plant species were able to dominate under high nutrient-low pH conditions. If long-term additions of nitrogen from bald eagle guano and prey remains do change soil chemistry, a shift toward more nitrophilous species may be most evident in the homogenous, salal-dominated understories of Central Coast islands.</gco:CharacterString> <lan:PT_FreeText> <lan:textGroup> <lan:LocalisedCharacterString locale="#fr">Dans cette étude d&#39;observation, nous quantifions la relation entre l&#39;activité des aigles, la chimie du sol et la composition de la végétation. Ce jeu de données comprend la description des placettes, des informations sur les aigles et les arbres de référence, des données sur la végétation et des données chimiques Les données sont présentées sous forme de tableau. Sur la base du comportement alimentaire et des habitudes de nidification, je propose que le pygargue à tête blanche (Haliaeetus leucocephalus) est un important vecteur de transfert des nutriments marins. Bien que leur régime alimentaire soit essentiellement marin, les pygargues à tête blanche consomment généralement leurs proies sur la terre ferme. Ce comportement entraîne le dépôt de restes de guano et de proies qui sont probablement similaires sur le plan chimique ou nutritionnel au guano des oiseaux de mer et peuvent produire des réactions écologiques similaires. Les modifications des caractéristiques du sol peuvent inclure une concentration accrue d&#39;azote d&#39;origine marine (Δ15N), d&#39;azote total et de phosphore, ainsi qu&#39;une baisse du pH. Des recherches antérieures ont montré une corrélation entre les changements dans la chimie du sol et une augmentation de la biomasse végétale et une diminution de la richesse en espèces végétales sur les sites de colonies d&#39;oiseaux de mer, probablement parce que certaines espèces végétales étaient capables de dominer dans des conditions de pH élevé et faible en nutriments. Si les ajouts à long terme d&#39;azote provenant du guano de pygargue à tête blanche et des restes de proies modifient la chimie du sol, un changement vers des espèces plus nitrophiles pourrait être plus évident dans les sous-étages homogènes dominés par les salals des îles de la côte centrale.</lan:LocalisedCharacterString> </lan:textGroup> </lan:PT_FreeText> </mri:abstract> <mri:credit> <gco:CharacterString></gco:CharacterString> </mri:credit> <mri:status> <mcc:MD_ProgressCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_ProgressCode" codeListValue="completed"></mcc:MD_ProgressCode> </mri:status> <mri:topicCategory> <mri:MD_TopicCategoryCode>oceans</mri:MD_TopicCategoryCode> </mri:topicCategory> <mri:extent> <gex:EX_Extent> <gex:geographicElement> <gex:EX_GeographicBoundingBox> <gex:extentTypeCode> <gco:Boolean>true</gco:Boolean> </gex:extentTypeCode> <gex:westBoundLongitude> <gco:Decimal>-128.58323147</gco:Decimal> </gex:westBoundLongitude> <gex:eastBoundLongitude> <gco:Decimal>-127.80979387</gco:Decimal> </gex:eastBoundLongitude> <gex:southBoundLatitude> <gco:Decimal>51.38160352</gco:Decimal> </gex:southBoundLatitude> <gex:northBoundLatitude> <gco:Decimal>52.09997599</gco:Decimal> </gex:northBoundLatitude> </gex:EX_GeographicBoundingBox> </gex:geographicElement> </gex:EX_Extent> </mri:extent> <mri:extent> <gex:EX_Extent> <gex:verticalElement> <gex:EX_VerticalExtent> <gex:minimumValue> <gco:Real>0.0</gco:Real> </gex:minimumValue> <gex:maximumValue> <gco:Real>0.0</gco:Real> </gex:maximumValue> <gex:verticalCRSId> <mrs:MD_ReferenceSystem> <mrs:referenceSystemIdentifier> <mcc:MD_Identifier> <mcc:code> <gco:CharacterString>5831</gco:CharacterString> </mcc:code> <mcc:codeSpace> <gco:CharacterString>EPSG</gco:CharacterString> </mcc:codeSpace> <mcc:version> <gco:CharacterString>2012-08-10</gco:CharacterString> </mcc:version> <mcc:description> <gco:CharacterString>EPSG::5831 - Instantaneous Water Level depth - Depth relative to instantaneous water level uncorrected for tide. 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Organization 8098fd34-269d-46b0-b2a3-5349e3f6475e
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