An evaluation of the analysis system of video transects used to sample subtidal epibiota

Tkachenko, Konstantin S.

doi:10.1016/j.jembe.2004.11.025

Cited by 6 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Characterization studies that use image are widely applied to benthic habitat characterization, and are to some extent successful in characterizing large-scale macroinvertebrate associations that are easily identifiable at some distance (e.g. Barker et al, 1999;Collie et al, 2000;Kostylev et al, 2001;Lund-Hanson et al, 2004 andTkachenko, 2005). However, few small scale studies exist that proved successful in characterizing algae based communities, as intended by the present work and used for monitoring purposes by Ducrotoy & Simpson (2001).…”

Section: Technical Problemsmentioning

confidence: 92%

The use of digital photography for the definition of coastal biotopes in Azores

et al. 2007

View full text Add to dashboard Cite

Sampling benthic communities usually requires intensive field and lab work which is generally performed by skilled staff. In algal dominated communities, like those on the shores of the Azores, biotope characterization studies focused on the more conspicuous algae categories, thus reducing the skills required for species identification. The present study compares in situ quadrat quantifications done by a skilled reader, with computer based quadrat quantifications using digital photographic records of the same areas read in situ, accomplished by skilled and nonskilled readers. The study was conducted inter-and subtidally at various shore heights/depths. Quantification of algal coverage, both in situ and computer based, used the point to point method with quadrats of 0.25 m · 0.25 m for the intertidal, and 0.50 m · 0.50 m for the subtidal surveys, both subdivided into 36 intersection points. Significant differences were found between in situ readings and computer based readings of photographic records conducted both by experienced and inexperienced readers. Biotopes identified using in situ data and image based data differ both for the subtidal and intertidal.

show abstract

Section: Technical Problemsmentioning

confidence: 92%

The use of digital photography for the definition of coastal biotopes in Azores

et al. 2007

View full text Add to dashboard Cite

show abstract

“…Through physiognomic sampling, more sampling units can be taken in the same amount of time, consequently increasing the sampled area. Most images taken so far had suitable resolution for sorting all settlements (Foster et al 1991, Meese & Tomich 1992, Ducrotoy & Simpson 2001, Kollmann & Stachowitsch 2001, Pech et al 2004, Tkachenko 2005, what is not possible working in species-level identification, especially in turfs and most beds (Foster et al 1991, Meese & Tomich 1992, Dethier et al 1993. Furthermore, the images used as evidence can be stored in databases for later reevaluation or new analyses (Foster et al 1991).…”

Section: Alternative Sampling Methodologiesmentioning

confidence: 99%

Current Knowledge status of the ecology of hard bottom benthic communities in Brazil and the need for new approaches

Ghilardi¹,

Pereira-Filho²,

Berchez³

2008

Oecol. Austr.

View full text Add to dashboard Cite

“…이렇게 얻어진 영구방형구별 상대피도와 상대빈도 평균치 를 바탕으로 종별 중요치 (importance value: IV)를 계산하였다 (Cox, 1996;Brower et al, 1998;Lee et al, 2001). (Holden and LeDrew, 2002; 또는 항공사진 (Everitt et al, 2010)을 이용하기도 하지만, 해조류를 포함하는 해양생물군집 의 생태조사에서는 수중카메라를 이용하는 기법이 보편적으 로 사용되고 있다 (Carney et al, 1999;Tkachenko, 2005; Beuchel et al, 2006;Alvaro et al, 2007;Celliers et al, 2007;Olbers et al, 2009). 나아가서 잘피류 (Ardizzone et al, 2006;Borg et al, 2006;McDonald et al, 2006;Kutser et al, 2007;Lefebvre et al, 2009)나 어류 (Spampinato et al, 2008)는 물론, 점액성 응집체 (Precali et al, 2005) (Littler et al, 1979).…”

Section: 서 론unclassified

An Analysis of Subtidal Macroalgal Community Structure Using a Modified Photo Quadrat Method

Kim¹,

Park²,

Moon³

et al. 2011

Korean Journal of Fisheries and Aquatic Sciences

View full text Add to dashboard Cite

The species composition and distributions of subtidal marine algae on the east coast of Korea were studied. We examined all species found in permanent quadrats at three depths (3 m, 5 m and 10 m) at Sacheon between October 2008 and December 2009. Coverage and frequency data were collected monthly via underwater photography and analyzed using a modified photo quadrat method. Of the 82 species identified, 10 were chlorophytes, 21 were phaeophytes, 50 were rhodophytes, and one was a seagrass. The largest number of species (59) was found 10 m deep, while the fewest (39) species were present at 5 m. A total 17 species (two green, five brown, and 10 red algae) occurred at all three depths. The vertical distribution of the study site was characterized by the melobesioidean algae, Ulva pertusa, Sargassum confusum, Phyllospadix iwatensis, and Codium arabicum at 3 m deep, melobesioidean algae and U. pertusa at 5 m deep, and Corallina pilulifera, Prionitis cornea, Chondracanthus tenellus and melobesioidean algae at 10 m deep. Given that coralline algae such as melobesioidean algae and C. pilulifera play important roles in coastal ecosystems, thorough studies on the spatial and temporal variations of coralline algae and the dynamics of marine algal communities on the east coast of Korea are now required.

show abstract

An evaluation of the analysis system of video transects used to sample subtidal epibiota

Cited by 6 publications

References 17 publications

The use of digital photography for the definition of coastal biotopes in Azores

The use of digital photography for the definition of coastal biotopes in Azores

Current Knowledge status of the ecology of hard bottom benthic communities in Brazil and the need for new approaches

An Analysis of Subtidal Macroalgal Community Structure Using a Modified Photo Quadrat Method

Contact Info

Product

Resources

About