scholarly journals First Report of the Coral-Killing Sponge Terpios hoshinota Rützler and Muzik, 1993 in Western Australia: A New Threat to Kimberley Coral Reefs?

Diversity ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 184 ◽  
Author(s):  
Jane Fromont ◽  
Zoe T. Richards ◽  
Nerida G. Wilson
Keyword(s):  
Coral Reefs ◽  
Western Australia ◽  
Health Surveys ◽  
Benthic Communities ◽  
Live Coral ◽  
Invasive Potential ◽  
Giant Clams ◽  
Reef Health ◽  
Terpios Hoshinota ◽  
First Time

The cyanobacteriosponge Terpios hoshinota has been reported throughout the Indo-Pacific including the Great Barrier Reef, Australia. The species encrusts live coral, giant clams, and other benthos and can be a threat to benthic communities on coral reefs. The Kimberley region of Western Australia has some of the least impacted reefs globally. We report for the first time the presence of T. hoshinota in the eastern Indian Ocean on Kimberley inshore coral reefs. Given its invasive potential, reef health surveys should include this species, and monitoring approaches developed to audit the remote Kimberley for this and other invasive species.

scholarly journals Status of Coral Reefs in the Water of Spermonde, Makassar, South Sulawesi

2021 ◽  
Vol 324 ◽  
pp. 03007
Author(s):  
Ni Wayan Purnama Sari ◽  
Rikoh Manogar Siringoringo ◽  
Muhammad Abrar ◽  
Risandi Dwirama Putra ◽  
Raden Sutiadi ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Coral Cover ◽  
Public Awareness ◽  
Live Coral ◽  
Health Index ◽  
Point Count ◽  
Live Coral Cover ◽  
Reef Health ◽  
Index Value

Observations of the condition of coral reefs have been carried out in Spermonde waters from 2015 to 2018. The method used in this observation uses Underwater Photo Transect (UPT), and the data obtained is analyzed using CPCe (Coral Point Count with Excel Extensions) software. The results show that the percentage of coral cover has increased from year to year. The percentage of live coral cover in 2015 was 19.64%, 23.60 in 2016, 23.72% in 2017, and 27.83% in 2018. The increase in live coral cover from year to year is thought to occur due to the availability of nutrients. or increasing public awareness, considering this location is one of the most famous tourist attractions in Makassar. Coral reef health index values can be used to classify coral reef health. Through the analysis of the coral reef health index, an index value of 4 was obtained, which means that the condition of the coral reefs is in the “moderate” category.

Crown-of-thorns starfish outbreak at Taiping Island (Itu Aba), Spratlys, South China Sea

2021 ◽  
Author(s):  
Wei Khang Heng ◽  
Ming-Jay Ho ◽  
Chao-Yang Kuo ◽  
Ya-Yi Huang ◽  
Chia-Ying Ko ◽  
...  
Keyword(s):  
South China Sea ◽  
Coral Reefs ◽  
South China ◽  
Coral Cover ◽  
Significant Decline ◽  
Live Coral ◽  
Sea Stars ◽  
China Sea ◽  
Regional Collaboration ◽  
First Time

Outbreak of crown-of-thorns sea stars, Acanthaster cf. solaris, were documented in coral reefs around Taiping Island, Spratlys for the first time. The outbreak might be thereason for the significant decline in live coral cover in 2021. Comprehensive monitoring through regional collaboration is needed.

Two new species of the genus Tanzanapseudes Băcescu, 1975 (Tanaidacea: Apseudomorpha: Tanzanapseudidae) from mid-west Australia

Zootaxa ◽  
2009 ◽  
Vol 2283 (1) ◽  
pp. 40-50 ◽  
Author(s):  
ANNA STĘPIEŃ ◽  
MAGDALENA BŁAŻEWICZ-PASZKOWYCZ
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Western Australia ◽  
Specific Pattern ◽  
Outer Margin ◽  
The Other ◽  
Distal Process ◽  
Two New Species ◽  
First Time

Two new species of the apseudomorphan tanaidacean genus Tanzanapseudes are described from coral reefs of Western Australia. This genus belongs to the monogeneric family Tanzanapseudidae, which is recorded here for the first time from Australia. Tanzanapseudes nieli n. sp. differs from the other members of the genus by a specific pattern of minute spines and setae on pereonites, and by a combination of two other characters: a pleotelson distal process with a smooth outer margin and a short and spinose first article in the antennule. T. levis n. sp. has the anterolateral processes on its carapace and distal processes on its pleotelson uniquely smooth. A key for identification of Tanzanapseudes species and an amended diagnosis are given.

scholarly journals Molecular identification, abundance and distribution of the coral-killing sponge Terpios hoshinota in Bengkulu and Seribu Islands, Indonesia

2018 ◽  
Vol 19 (6) ◽  
pp. 2238-2246
Author(s):  
RISNITA TRI UTAMI ◽  
NEVIATY P. ZAMANI ◽  
HAWIS H. MADDUPPA
Keyword(s):  
Coral Reefs ◽  
Molecular Identification ◽  
Coral Cover ◽  
Pearson Correlation ◽  
Principal Component ◽  
Live Coral ◽  
Pacific Region ◽  
Terpios Hoshinota ◽  
Abundance And Distribution

Utami RT, Zamani NP, Madduppa HH. 2018. Molecular identification, abundance and distribution of the coral-killing sponge Terpios hoshinota in Bengkulu and Seribu Islands, Indonesia. Biodiversitas 19: 2238-2246. Coral killing sponge Terpios hoshinota is one of threats to coral reefs. The outbreaks of  T. hoshinota has been reported in the Indo-Pacific region. However, the current distribution of this species in Western of Sumatera Island is unknown, compared to Seribu Islands. This study aimed to identify coral-killing sponge molecularly and to compare the distribution and abundance of T. hoshinota in Bengkulu (Western of Sumatera) and in Seribu Islands (Northern of Java Island) and to record the preferences of coral substrate of T. hoshinota. Coral reefs and T. hoshinota data were collected using underwater photo transect method with 0.5x0.5m2 quadrate transect. Coral reefs covered by T. hoshinota was analyzed by using Correspondence Analysis, while the determination of biophysical and chemical environment was analyzed by Principal Component Analysis. The identity of the sponge was T. hoshinota. T. hoshinota has been expanding in many reefs across Indonesia especially in Tikus Island and Belanda Island. The most prevalent coral genera in the Seribu Islands infected by T. hoshinota was Acropora while those in Bengkulu were Porites and Pocillopora. Pearson correlation between the live coral cover and T. hoshinota cover was revealed not significant, while T. hoshinota cover and orthophosphate was significant. This study suggests that orthophosphate may play a role invasion of T. hoshinota outbreaks.

Origin of Blue Hole Structures in Coral Reefs: Houtman Abrolhos, Western Australia

2006 ◽  
Vol 221 ◽  
pp. 202-208 ◽  
Author(s):  
Karl-Heinz Wyrwoll ◽  
Zhong Rong Zhu ◽  
Lindsay B. Collins ◽  
Bruce G. Hatcher
Keyword(s):  
Coral Reefs ◽  
Western Australia ◽  
Blue Hole

scholarly journals Impacts of stratospheric aerosol geoengineering strategy on Caribbean coral reefs

2018 ◽  
Vol 10 (4) ◽  
pp. 523-532 ◽  
Author(s):  
Zhihua Zhang ◽  
Andy Jones ◽  
M. James C. Crabbe
Keyword(s):  
Coral Reefs ◽  
Climate Model ◽  
Marine Species ◽  
Stratospheric Aerosol ◽  
Solar Irradiation ◽  
Content Type ◽  
Hurricane Damage ◽  
Carbon Emissions Reduction ◽  
Caribbean Coral Reefs ◽  
First Time

Purpose Currently, negotiation on global carbon emissions reduction is very difficult owing to lack of international willingness. In response, geoengineering (climate engineering) strategies are proposed to artificially cool the planet. Meanwhile, as the harbor around one-third of all described marine species, coral reefs are the most sensitive ecosystem on the planet to climate change. However, until now, there is no quantitative assessment on the impacts of geoengineering on coral reefs. This study aims to model the impacts of stratospheric aerosol geoengineering on coral reefs. Design/methodology/approach The HadGEM2-ES climate model is used to model and evaluate the impacts of stratospheric aerosol geoengineering on coral reefs. Findings This study shows that (1) stratospheric aerosol geoengineering could significantly mitigate future coral bleaching throughout the Caribbean Sea; (2) Changes in downward solar irradiation, sea level rise and sea surface temperature caused by geoengineering implementation should have very little impacts on coral reefs; (3) Although geoengineering would prolong the return period of future hurricanes, this may still be too short to ensure coral recruitment and survival after hurricane damage. Originality/value This is the first time internationally to quantitatively assess the impacts of geoengineering on coral reefs.

scholarly journals First record of Dero (Aulophorus) bimagnasetus Harman (Oligochaeta) from Brazil and habitat characteristics

2014 ◽  
Vol 74 (2) ◽  
pp. 483-488
Author(s):  
R. Campitelli-Ramos ◽  
JV. Lucca ◽  
LLD. Oliveira ◽  
MR. Marchese ◽  
O. Rocha
Keyword(s):  
Benthic Communities ◽  
First Record ◽  
Biological Data ◽  
Habitat Characteristics ◽  
Low Oxygen ◽  
Body Width ◽  
Ecological Information ◽  
Freshwater Biota ◽  
Physical And Chemical ◽  
First Time

Annelid worms represent a significant part of freshwater benthic communities worldwide and Oligochaeta is a particularly species-rich group. Dero (A) bimagnasetus (Naididae) previously found and described from a small marsh in Surinam in 1974, has now been found for the first time in Barra Lake, MG, Brazil. Due to the scarce biological data and absence of ecological information in the literature regarding this species we are presenting morphological information on the specimens obtained and the physical and chemical characteristics of the habitat they were found. This species occurred only in the littoral zone of Barra Lake, in muddy, low oxygen, low conductivity and low organic matter sediment. The four individuals collected ranged 3.17-4.15 mm total length; 0.25 - 0.26 mm body width and 0.16-0.21 mm3 total volume. Considering the present anthropic pressures on freshwater biota and fast biodiversity losses worldwide it is now recognized that attention must be paid to low abundance species and the urgency for preservation of their habitats.

scholarly journals PRIMER REGISTRO DEL GENERO Echineulima LUTZEN Y NIELSEN (GASTROPODA: EULIMIDAE), MOLUSCOS PARASITOS DE ERIZOS DE MAR EN LA ISLA DE GORGONA (PACIFICO COLOMBIANO

2016 ◽  
Vol 17 ◽  
Author(s):  
Jaime Ricardo Cantera K. ◽  
Raúl Neira O.
Keyword(s):  
Coral Reefs ◽  
Geographical Distribution ◽  
Sea Urchin ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
First Time

This paper reports for the first time for the tropical Eastern Pacific the genus Echineulima (Gastropoda: Eulimidae), a parasite of the sea urchin Centrostephanus coronatus, in coral reefs of Gorgona Island at 2 4 m depth. It seems likely that it is an undescribedspecies. This paper presents information abftut the snail including a brief description, size, habitat, and considerations about the effects of the parasite on the sea urchin. A discussión about the geographical distribution of the genus is also presented.

scholarly journals Coral Reef and Shallow Water Benthic Identification Using Landsat 7 ETM+ Satellite Data in Nusa Penida District

2018 ◽  
Vol 2 (1) ◽  
pp. 17
Author(s):  
Arief Reza Fahlevi ◽  
Takahiro Osawa ◽  
I Wayan Arthana
Keyword(s):  
Coral Reefs ◽  
Shallow Water ◽  
Health Monitoring ◽  
Confusion Matrix ◽  
Satellite Image ◽  
Kappa Coefficient ◽  
Landsat 7 ◽  
Triangle Center ◽  
Reef Health

This study aims to investigate the feasibility of Landsat 7 ETM+ to identify coral reefs and shallow water benthic at Nusa Penida district in 2009 and 2012, comparison with the Reef Health Monitoring (RHM) results conducted by the Coral Triangle Center (CTC)  using the Point Intercept Transect (PIT) method in the same periods. This study also aims to determine the changes of coral reefs and shallow water benthic cover during this period and the distribution at Nusa Penida districk. Shallow water benthic classification refers to English et al. (1997), with a modified by the addition of vegetation classes (seagrass and seaweed). The classification result using confusion matrix between the Reef Health Monitoring (RHM) with the classification of satellite image in 2009 obtained an accuracy rate of 65.85% with a kappa coefficient value of 0.525, while in 2012 the accuracy value obtained of 74.81% with kappa coefficient value of 0.650, which shows the results of that classification of satellite images of Landsat 7 ETM+ with the results of in-situ research is in a moderate level.

scholarly journals Sponge diversity and community composition in Irish bathyal coral reefs

2007 ◽  
Vol 76 (2) ◽  
pp. 121-142 ◽  
Author(s):  
Rob W.M. van Soest ◽  
Daniel F.R. Cleary ◽  
Mario J. de Kluijver ◽  
Marc S.S. Lavaleye ◽  
Connie Maier ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Species Richness ◽  
Coral Reefs ◽  
Community Composition ◽  
Live Coral ◽  
The West ◽  
Sponge Diversity ◽  
And Cluster Analysis ◽  
Pooled Samples ◽  
Reef Mound

Sponge diversity and community composition in bathyal cold water coral reefs (CWRs) were examined at 500-900 m depth on the southeastern slopes of Rockall Bank and the northwestern slope of Porcupine Bank, to the west of Ireland in 2004 and 2005 with boxcores. A total of 104 boxcore samples, supplemented with 10 trawl/dredge attempts, were analyzed for the presence and abundance of sponges, using microscopical examination of (sub)samples of collected coral branches, and semi-quantitative macroscopic examination. Approximate minimum size of identified and counted sponge individuals was 1 mm. Literature data were added to the Porcupine Bank results to compensate for a less intensive sampling program in that location. Species richness and abundance were determined at local (sample diversity, pooled-sample diversity, local reef diversity), between-reef (diversity of two reef areas at 15 km distance), and regional scales (diversity of three reef areas over a distance of 200 km). Abiotic and biotic parameters including depth, the presence and cover of live coral, dead coral and sand, local reef, and orientation towards the nearest reef mound summit, were included in a constrained ordination technique (RDA); a Monte Carlo forward selection procedure was used to obtain significant predictors of variation in composition. The results of this analysis were compared with unconstrained ordination (PCA) and cluster analysis. The presence of live coral, depth and the local reefs C1 and C3 proved to be significant predictors of variation in sponge composition. The PCA and cluster analysis confirmed these results. Sample species richness was consistently heterogeneous from zero species and individuals up to 57 species and 90 individuals per (boxcore) sample. Species richness of local reefs determined from pooled samples showed the three localities studied to have similar species richness, namely 105-122 species in each location. Species richness was highest in samples with relatively low live coral cover. As in the RDA, live coral presence and depth appeared to be responsible for most of the variation observed in the cluster results. Cluster analysis of Bray-Curtis dissimilarity values of the pooled samples of all three reef localities using presence/absence data of all available samples indicated that distance appeared to structure the composition of the sponge assemblages of the three reef mound areas, but much less so within and among local reefs. Bathyal reefs of the regions to the west of Ireland were found to have a combined sponge species richness of 191 species, exceeding the richness of individual reef mound areas by c. 38-45%. Sponge presence in CWRs is clearly structured and controlled by biotic and abiotic factors. In particular, live coral presence appears a significant predictor of CWR sponge composition and diversity.

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