Mapping eelgrass beds with orthophotos

Research output: Contribution to conferenceConference abstract for conferenceResearch

Standard

Mapping eelgrass beds with orthophotos. / Ørberg, Sarah Bachmann; Groom, Geoffrey Brian; Kjeldgaard, Ane; Carstensen, Jacob; Rasmussen, Michael Bo; Clausen, Preben; Krause-Jensen, Dorte.

2018. Abstract from 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark.

Research output: Contribution to conferenceConference abstract for conferenceResearch

Harvard

Ørberg, SB, Groom, GB, Kjeldgaard, A, Carstensen, J, Rasmussen, MB, Clausen, P & Krause-Jensen, D 2018, 'Mapping eelgrass beds with orthophotos', 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark, 18/06/2018 - 20/06/2018.

APA

Ørberg, S. B., Groom, G. B., Kjeldgaard, A., Carstensen, J., Rasmussen, M. B., Clausen, P., & Krause-Jensen, D. (2018). Mapping eelgrass beds with orthophotos. Abstract from 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark.

CBE

Ørberg SB, Groom GB, Kjeldgaard A, Carstensen J, Rasmussen MB, Clausen P, Krause-Jensen D. 2018. Mapping eelgrass beds with orthophotos. Abstract from 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark.

MLA

Ørberg, Sarah Bachmann et al. Mapping eelgrass beds with orthophotos. 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, 18 Jun 2018, Nyborg, Denmark, Conference abstract for conference, 2018.

Vancouver

Ørberg SB, Groom GB, Kjeldgaard A, Carstensen J, Rasmussen MB, Clausen P et al. Mapping eelgrass beds with orthophotos. 2018. Abstract from 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark.

Author

Ørberg, Sarah Bachmann ; Groom, Geoffrey Brian ; Kjeldgaard, Ane ; Carstensen, Jacob ; Rasmussen, Michael Bo ; Clausen, Preben ; Krause-Jensen, Dorte. / Mapping eelgrass beds with orthophotos. Abstract from 4th International Symposium on Research and Management of Eutrophication in Coastal Ecosystems, Nyborg, Denmark.

Bibtex

@conference{e28a74e663794213a86543ad62322a7f,
title = "Mapping eelgrass beds with orthophotos",
abstract = "Mapping the distribution of eelgrass is important for optimal management of eelgrass meadows, a key organism in coastal ecosystems. The many ecosystem functions and services that eelgrass beds provide, scale directly with their distribution area. We have evaluated the potential in using orthophotos, that Aarhus University has bought for other purposes, to map and quantify eelgrass distribution. Based on photos from the summers of 2012, 2014 and 2016, in combination with monitoring data on eelgrass, we developed image analysis techniques applied to RGB color bands and analyzed orthophotos from selected, important eelgrass areas in Denmark: Nibe-Gj{\o}l Bredninger in Limfjorden, Saltholm incl. the Amager coast facing Saltholm, the Southfunen Archipelago and Roskilde Fjord. The analysis displayed good precision with less than 5{\%} uncertainty, validated by ground truth monitoring data. Good measures of eelgrass distribution areas and patterns will contribute to a better understanding of the ecosystems services and the socioeconomic value of eelgrass meadows at larger scales. We show that mapping eelgrass distribution by image analysis of orthophotos serves as a readily applicable method. Orthophotos are often available in relatively long continuous time series, offering the opportunity to observe longterm patterns in distribution and how they may be affected by different levels of environmental status in associated water bodies.",
author = "{\O}rberg, {Sarah Bachmann} and Groom, {Geoffrey Brian} and Ane Kjeldgaard and Jacob Carstensen and Rasmussen, {Michael Bo} and Preben Clausen and Dorte Krause-Jensen",
year = "2018",
language = "English",
note = "null ; Conference date: 18-06-2018 Through 20-06-2018",
url = "https://niva-denmark.dk/eutro-2018/",

}

RIS

TY - ABST

T1 - Mapping eelgrass beds with orthophotos

AU - Ørberg, Sarah Bachmann

AU - Groom, Geoffrey Brian

AU - Kjeldgaard, Ane

AU - Carstensen, Jacob

AU - Rasmussen, Michael Bo

AU - Clausen, Preben

AU - Krause-Jensen, Dorte

PY - 2018

Y1 - 2018

N2 - Mapping the distribution of eelgrass is important for optimal management of eelgrass meadows, a key organism in coastal ecosystems. The many ecosystem functions and services that eelgrass beds provide, scale directly with their distribution area. We have evaluated the potential in using orthophotos, that Aarhus University has bought for other purposes, to map and quantify eelgrass distribution. Based on photos from the summers of 2012, 2014 and 2016, in combination with monitoring data on eelgrass, we developed image analysis techniques applied to RGB color bands and analyzed orthophotos from selected, important eelgrass areas in Denmark: Nibe-Gjøl Bredninger in Limfjorden, Saltholm incl. the Amager coast facing Saltholm, the Southfunen Archipelago and Roskilde Fjord. The analysis displayed good precision with less than 5% uncertainty, validated by ground truth monitoring data. Good measures of eelgrass distribution areas and patterns will contribute to a better understanding of the ecosystems services and the socioeconomic value of eelgrass meadows at larger scales. We show that mapping eelgrass distribution by image analysis of orthophotos serves as a readily applicable method. Orthophotos are often available in relatively long continuous time series, offering the opportunity to observe longterm patterns in distribution and how they may be affected by different levels of environmental status in associated water bodies.

AB - Mapping the distribution of eelgrass is important for optimal management of eelgrass meadows, a key organism in coastal ecosystems. The many ecosystem functions and services that eelgrass beds provide, scale directly with their distribution area. We have evaluated the potential in using orthophotos, that Aarhus University has bought for other purposes, to map and quantify eelgrass distribution. Based on photos from the summers of 2012, 2014 and 2016, in combination with monitoring data on eelgrass, we developed image analysis techniques applied to RGB color bands and analyzed orthophotos from selected, important eelgrass areas in Denmark: Nibe-Gjøl Bredninger in Limfjorden, Saltholm incl. the Amager coast facing Saltholm, the Southfunen Archipelago and Roskilde Fjord. The analysis displayed good precision with less than 5% uncertainty, validated by ground truth monitoring data. Good measures of eelgrass distribution areas and patterns will contribute to a better understanding of the ecosystems services and the socioeconomic value of eelgrass meadows at larger scales. We show that mapping eelgrass distribution by image analysis of orthophotos serves as a readily applicable method. Orthophotos are often available in relatively long continuous time series, offering the opportunity to observe longterm patterns in distribution and how they may be affected by different levels of environmental status in associated water bodies.

M3 - Conference abstract for conference

ER -