Genetic stock compositions and natal origin of green turtle ( Chelonia mydas ) foraging at Brunei Bay

Joseph, Juanita; Nishizawa, Hideaki; Arshaad, Wahidah Mohd; Kadir, Syed Abdullah Syed Abdul; Jaaman, Saifullah Arifin; Bali, J.; Jamaludin, Noorul Azliana; Katoh, Masaya

doi:10.1016/j.gecco.2016.01.003

Cited by 26 publications

(45 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Adiana et al (2017) , there were only five scientific publications between 1968 and 2012 on Brunei Bay, and they related to water pollution and marine mammals in the area. The research works after 2012 (e.g., Alkhadher et al, 2015 ; Joseph et al, 2016 ; Proum et al, 2016 ; Joseph et al, 2017 ) also focused on sediment pollution and sea turtles, but none were specific to the (Malaysian) mangrove vegetation.…”

Section: Introductionmentioning

confidence: 99%

Status of the undisturbed mangroves at Brunei Bay, East Malaysia: a preliminary assessment based on remote sensing and ground-truth observations

Satyanarayana

Muslim

Horsali

et al. 2018

PeerJ

View full text Add to dashboard Cite

Brunei Bay, which receives freshwater discharge from four major rivers, namely Limbang, Sundar, Weston and Menumbok, hosts a luxuriant mangrove cover in East Malaysia. However, this relatively undisturbed mangrove forest has been less scientifically explored, especially in terms of vegetation structure, ecosystem services and functioning, and land-use/cover changes. In the present study, mangrove areal extent together with species composition and distribution at the four notified estuaries was evaluated through remote sensing (Advanced Land Observation Satellite—ALOS) and ground-truth (Point-Centred Quarter Method—PCQM) observations. As of 2010, the total mangrove cover was found to be ca. 35,183.74 ha, of which Weston and Menumbok occupied more than two-folds (58%), followed by Sundar (27%) and Limbang (15%). The medium resolution ALOS data were efficient for mapping dominant mangrove species such as Nypa fruticans, Rhizophora apiculata, Sonneratia caseolaris, S. alba and Xylocarpus granatum in the vicinity (accuracy: 80%). The PCQM estimates found a higher basal area at Limbang and Menumbok—suggestive of more mature vegetation, compared to Sundar and Weston. Mangrove stand structural complexity (derived from the complexity index) was also high in the order of Limbang > Menumbok > Sundar > Weston and supporting the perspective of less/undisturbed vegetation at two former locations. Both remote sensing and ground-truth observations have complementarily represented the distribution of Sonneratia spp. as pioneer vegetation at shallow river mouths, N. fruticans in the areas of strong freshwater discharge, R. apiculata in the areas of strong neritic incursion and X. granatum at interior/elevated grounds. The results from this study would be able to serve as strong baseline data for future mangrove investigations at Brunei Bay, including for monitoring and management purposes locally at present.

show abstract

Section: Introductionmentioning

confidence: 99%

Status of the undisturbed mangroves at Brunei Bay, East Malaysia: a preliminary assessment based on remote sensing and ground-truth observations

Satyanarayana

Muslim

Horsali

et al. 2018

PeerJ

View full text Add to dashboard Cite

show abstract

“…The MSA method has the advantage over the traditional mark-recapture techniques in that it can be applied to individuals belonging to both genders and all size classes (Jensen 2010, Jensen et al 2013, can involve modest sample sizes, and requires only a relatively short period of time to complete (Read et al 2014). Despite numerous studies using MSA in marine turtles (Bass & Witzell 2000, Engstrom et al 2002, Jensen 2010, Nishizawa et al 2013, Jensen et al 2016, Joseph et al 2016, important sampling gaps from Eastern Pacific (EP) populations remain, including the breeding populations nesting on mainland Ecuador. Furthermore, limited information exists on the levels of connectivity between foraging and nesting habitats, with only a few MSAs for the region (Amorocho et al 2012, Heidemeyer 2015.…”

Section: Introductionmentioning

confidence: 99%

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Chaves¹,

Peña²,

Valdés-Uribe³

et al. 2017

Endang. Species. Res.

View full text Add to dashboard Cite

“…The sea surface temperature (SST) ranges from 24.60 to 32.02 o C (Hee and Suratman 2016), and air average humidity throughout the year is 82% (Hogan 2011). Brunei Bay has a high quantity of fish resources (Joseph et al 2016) and 54 species of fish mentioned by Mohamed and Landner (1993). Fishing is the second most important economic activity in the Bay (Department of Fisheries Sabah 2008).…”

Section: Study Areamentioning

confidence: 99%

Population estimation, distribution, and habitat preference of Irrawaddy dolphins Orcaella brevirostris (Owen in Gray, 1866) in the Brunei Bay, Malaysian waters

et al. 2018

View full text Add to dashboard Cite

show abstract

Genetic stock compositions and natal origin of green turtle ( Chelonia mydas ) foraging at Brunei Bay

Cited by 26 publications

References 33 publications

Status of the undisturbed mangroves at Brunei Bay, East Malaysia: a preliminary assessment based on remote sensing and ground-truth observations

Status of the undisturbed mangroves at Brunei Bay, East Malaysia: a preliminary assessment based on remote sensing and ground-truth observations

Connectivity, population structure, and conservation of Ecuadorian green sea turtles

Population estimation, distribution, and habitat preference of Irrawaddy dolphins Orcaella brevirostris (Owen in Gray, 1866) in the Brunei Bay, Malaysian waters

Contact Info

Product

Resources

About