scholarly journals A new Cladocora caespitosa population with unique ecological traits

2017 ◽  
Vol 18 (1) ◽  
pp. 38 ◽  
Author(s):  
D. KERSTING ◽  
E. CEBRIAN ◽  
J. VERDURA ◽  
E. BALLESTEROS
Keyword(s):  
Coral Cover ◽  
Marine Reserve ◽  
Colony Growth ◽  
Iucn Red List ◽  
Distribution Area ◽  
Ecological Traits ◽  
Rare Type ◽  
Algal Communities ◽  
Cladocora Caespitosa ◽  
Waves And Currents

The Mediterranean endemic scleractinian coral Cladocora caespitosa (L., 1767) has been recently included in the IUCN Red List as an endangered species. In this context, information on the species is urgently required to further assess its status and to determine its distribution area. This study reports on the main traits of a recently discovered C. caespitosa population in Formentera (Balearic Islands, W Mediterranean). Here, coral colonies live wrapped in Cystoseira forests thriving on rocky substrata (5 - 13 m depth), thus being a new example of the ability of C. caespitosa to build up extensive populations within algal communities. Even though coral cover reaches ~ 20 % on average, which is a remarkable figure for this species, colonies are generally small (~ 10 cm diameter on average), most probably due to partial exposure to waves and currents. The combination of hydrodynamics and the presence of algal forests in the studied site could be responsible for the high occurrence of a rare type of colony growth: free-living coral nodules or coralliths. This population is highly interesting for future monitoring owing to its unique traits, the absence of necrosis signs related to past mortality events, and its location inside a marine reserve.

Phylogenetic differentiation and taxonomic consequences in the Saurodactylus brosseti species complex (Squamata: Sphaerodactylidae), with description of four new species

Zootaxa ◽  
2019 ◽  
Vol 4674 (4) ◽  
pp. 401-425
Author(s):  
SOHEILA JAVANMARDI ◽  
SVEN VOGLER ◽  
ULRICH JOGER
Keyword(s):  
Species Complex ◽  
Morphological Characteristics ◽  
Color Pattern ◽  
Distribution Area ◽  
12S Rrna ◽  
Ecological Traits ◽  
Acacia Species ◽  
Mitochondrial Markers ◽  
Dichotomous Key ◽  
High Level

We divide Saurodactylus brosseti into five species, based on molecular and morphological characteristics. Phylogenetic analysis of two mitochondrial markers (ND4 and 12S rRNA) reveals five separately evolving lineages (clades) in the S. brosseti species complex. Each can be assigned to a particular geographical range within the distribution area in Morocco: North, South, Anti-Atlas, East and Southeast. A dichotomous key for all species within the genus Saurodactylus is presented. Despite the high level of color pattern variation among and within the northern, southern, Anti-Atlas and eastern clades, the southeastern lineage shows a unique coloration which is not found in other clades. The ecological traits of the southeastern clade seem to differ from those of the other four lineages since it is basically associated with Acacia species. Like the relictual ecosystem characterized by these trees, it appears to be highly threatened by extinction. 

scholarly journals Isolation and characterization of 10 polymorphic microsatellite loci for the endangered Galapagos-endemic whitespotted sandbass (Paralabrax albomaculatus)

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1253 ◽  
Author(s):  
Alicia C. Bertolotti ◽  
Sarah M. Griffiths ◽  
Nathan K. Truelove ◽  
Stephen J. Box ◽  
Richard F. Preziosi ◽  
...  
Keyword(s):  
Microsatellite Loci ◽  
Marine Reserve ◽  
Iucn Red List ◽  
Closely Related Species ◽  
Important Species ◽  
Isolation And Characterization ◽  
Commercially Important ◽  
Paired End Sequencing ◽  
Galapagos Marine Reserve

The white-spotted sandbass (Paralabrax albomaculatus)is a commercially important species in the Galapagos Marine Reserve, but is classified as endangered in the IUCN Red List. For this study, 10 microsatellite loci were isolated and characterized using Illumina paired-end sequencing. These loci can be used for genetic studies of population structure and connectivity to aid in the management of the white-spotted sandbass and other closely-related species. The 10 characterized loci were polymorphic, with 11–49 alleles per locus, and observed heterozygosity ranged from 0.575 to 0.964. This set of markers is the first to be developed for this species.

scholarly journals Birds of primary and secondary forest and shrub habitats in the peat swamp of Berbak National Park, Sumatra

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 229 ◽  
Author(s):  
Kevin Darras ◽  
Dedi Rahman ◽  
Waluyo Sugito ◽  
Yeni Mulyani ◽  
Dewi Prawiradilaga ◽  
...  
Keyword(s):  
National Park ◽  
Secondary Forest ◽  
Iucn Red List ◽  
Wildlife Trade ◽  
Distribution Area ◽  
Primary Forest ◽  
Feeding Guilds ◽  
Swamp Forest ◽  
Mobile Species ◽  
Peat Swamp

Background: Tropical lowland rainforests are threatened by deforestation and degradation worldwide. Relatively little research has investigated the degradation of the forests of South-east Asia and its impact on biodiversity, and even less research has focused on the important peat swamp forests of Indonesia, which experienced major losses through severe fires in 2015. Methods: We acoustically sampled the avifauna of the Berbak National Park in 2013 in 12 plots split in three habitats: primary swamp forest, secondary swamp forest, and shrub swamp, respectively representing non-degraded, previously selectively logged, and burned habitats. We analysed the species richness, abundance, vocalisation activity, and community composition across acoustic counts, plots, feeding guilds and IUCN Red List categories. We also analysed community-weighted means of body mass, wing length, and distribution area. Results: The avifauna in the three habitats was remarkably similar in richness, abundance and vocalisation activity, and communities mainly differed due to a lower prevalence of understory insectivores (Old-World Babblers, Timaliidae) in shrub swamp. However primary forest retained twice as many conservation-worthy species as shrub swamp, which harboured heavier, probably more mobile species, with larger distributions than those of forest habitats. Conclusions: The National Park overall harboured higher bird abundances than nearby lowland rainforests. Protecting the remaining peat swamp forest in this little-known National Park should be a high conservation priority in the light of the current threats coming from wildlife trade, illegal logging, land use conversion, and man-made fires.

Coral tissue mortality of the coral Cladocora caespitosa caused by gastropod Coralliophila meyendorffi in the Mljet National Park (eastern Adriatic Sea)

2013 ◽  
Vol 93 (8) ◽  
pp. 2101-2108 ◽  
Author(s):  
Petar Kružić ◽  
Pavica Sršen ◽  
Katarina Cetinić ◽  
Dušan Zavodnik
Keyword(s):  
Calcium Carbonate ◽  
National Park ◽  
Adriatic Sea ◽  
Coral Cover ◽  
Coral Tissue ◽  
Live Coral ◽  
Bottom Currents ◽  
Cladocora Caespitosa ◽  
Population Outbreaks ◽  
Considerable Damage

The corallivorous gastropod Coralliophila meyendorffi (family Coralliophilidae) is a well-known predator of the coral Cladocora caespitosa, particularly in the eastern Adriatic Sea, where population outbreaks can drastically reduce coral cover. Coralliophila meyendorffi ranges in size from 5 to 40 mm in shell total length, and smaller specimens are often found living with the coral C. caespitosa. Specimens of C. meyendorffi feed exclusively on live coral tissue, stripping it from the calcium carbonate skeleton. Recent outbreaks of the gastropod C. meyendorffi have caused considerable damage on a C. caespitosa bank in Veliko Jezero (the Mljet National Park, eastern Adriatic Sea). The bank occurs at depths between 6 and 18 m, covering a 65  m2 area. During summer of 2010, a substantial outbreak affected about 5%t of the coral colonies. The gastropods were highly aggregated in sheltered areas of the coral bank (up to 41 specimens/dm2) with smaller clusters (from 8 to 12 specimens/dm2) on coral colonies that were influenced by strong bottom currents (up to 1.23 ms−1).

scholarly journals Birds of primary and secondary forest and shrub habitats in the peat swamp of Berbak National Park, Sumatra

F1000Research ◽  
2018 ◽  
Vol 7 ◽  
pp. 229
Author(s):  
Kevin Darras ◽  
Dedi Rahman ◽  
Waluyo Sugito ◽  
Yeni Mulyani ◽  
Dewi Prawiradilaga ◽  
...  
Keyword(s):  
National Park ◽  
Secondary Forest ◽  
Iucn Red List ◽  
Wildlife Trade ◽  
Distribution Area ◽  
Primary Forest ◽  
Feeding Guilds ◽  
Swamp Forest ◽  
Mobile Species ◽  
Peat Swamp

Background: Tropical lowland rainforests are threatened by deforestation and degradation worldwide. Relatively little research has investigated the degradation of the forests of South-east Asia and its impact on biodiversity, and even less research has focused on the important peat swamp forests of Indonesia, which experienced major losses through severe fires in 2015. Methods: We acoustically sampled the avifauna of the Berbak National Park in 2013 in 12 sites split in three habitats: primary swamp forest, secondary swamp forest, and shrub swamp, respectively representing non-degraded, previously selectively logged, and burned habitats. We analysed the species richness, abundance, vocalisation activity, and community composition across acoustic counts, sites, feeding guilds and IUCN Red List categories. We also analysed community-weighted means of body mass, wing length, and distribution area. Results: The avifauna in the three habitats was remarkably similar in richness, abundance and vocalisation activity, and communities mainly differed due to a lower prevalence of understory insectivores (Old-World Babblers, Timaliidae) in shrub swamp. However primary forest retained twice as many conservation-worthy species as shrub swamp, which harboured heavier, probably more mobile species, with larger distributions than those of forest habitats. Conclusions: The National Park overall harboured higher bird abundances than nearby lowland rainforests. Protecting the remaining peat swamp forest in this little-known National Park should be a high conservation priority in the light of the current threats coming from wildlife trade, illegal logging, land use conversion, and man-made fires.

scholarly journals Ecosistemas coralinos del Parque Nacional Isla del Coco, Costa Rica: estructura y comparación 1987-2014

2016 ◽  
Vol 64 (1) ◽  
pp. 153 ◽  
Author(s):  
Juan José Alvarado ◽  
Andrés Beita-Jiménez ◽  
Sebastián Mena ◽  
Cindy Fernández-García ◽  
Ana Gloria Guzman-Mora ◽  
...  
Keyword(s):  
Costa Rica ◽  
Coral Reefs ◽  
Coral Cover ◽  
Iucn Red List ◽  
Live Coral ◽  
Large Populations ◽  
Conservation Actions ◽  
Carnivorous Species ◽  
Commercial Value ◽  
Study Sites

<p><strong> </strong>Isla del Coco has one of the most diverse and well-conserved coral reefs in Costa Rica. These reefs have been extensively studied since the 1980’s, however those studies focused mainly on coral coverage. The aim of this study is to evaluate the coral reefs of the island, not only by the coverage of the substrate but also the composition of fish, invertebrates and reef complexity. A total of 17 sites around the island were sampled in July 2013 and in February-March 2014. At each site, we evaluated three depths (4-8 m, 9-12 m and 13-16 m), where three 10m long transects were sampled. Turf algae was the predominant substrate cover with 38.18±5.58 %. The crustose calcareous algae (Order Corallinales) had a 28.12±5.85 % cover and live coral was 18.64±3.55 %, with <em>Porites lobata</em> as the main reef builder. A total of 18 taxa of macroinvertebrates were observed in the study sites, of which 56 % of the species were not abundant, 33 % were common, and the sea urchin <em>Diadema mexicanum</em> was the only dominant species. The density of lobsters of the genus <em>Panulirus</em> was 388±385 ind ha<sup>-1</sup>, which is the highest density reported in the Eastern Tropical Pacific. Also we observed high densities of the sea cucumber <em>Isostichopus fuscus</em> (550 ind ha<sup>-1</sup>), which has a high commercial value. We recorded 45 338 fish individuals, distributed in 93 species, with an average of 1.2±8.5 tn ha<sup>-1</sup>. From the total of species, 51 % were uncommon, 31 % common, 11 % predominant and 8 % occasional. The fish community at Isla del Coco is represented by a large number of carnivorous species, followed by top predators, herbivores and planktivorous species. According to the fish categories of the IUCN Red List, 16 % of species are in threatened categories and represent 25 % of the total sampled biomass. When comparing with studies carried out from 1987 to the present, the recovery in coral cover over time is evident, mainly due to: 1) a decrease in the pressure of the bioerosive action of <em>D. mexicanum</em>; and 2) the conservation actions that have been taken on the island. This has been translated in complex and more rugose reefs. Isla del Coco reefs are healthy, with functional and complex food webs; where species of high commercial value have large populations. The effectiveness of conservation and management activities in Isla del Coco has resulted in the recovery of the reef communities.</p>

The effects of traditional fisheries management on fisheries yields and the coral-reef ecosystems of southern Kenya

1997 ◽  
Vol 24 (2) ◽  
pp. 105-120 ◽  
Author(s):  
T.R. MCCLANAHAN ◽  
H. GLAESEL ◽  
J. RUBENS ◽  
R. KIAMBO
Keyword(s):  
Fisheries Management ◽  
Biological Diversity ◽  
Coral Cover ◽  
Marine Reserve ◽  
Ecological Condition ◽  
Marine Conservation ◽  
Sacred Sites ◽  
Traditional Management ◽  
Landing Sites ◽  
National Organizations

Many traditions of coastal peoples may be viewed as traditional forms of marine conservation because, like modern fisheries management, they restrict fishing gear, fishing times, and places, but their effects are little studied in practice. A study was undertaken of human culture and fisheries resources in an area of southern Kenya, designated as a national marine reserve, to determine the effect of the existing 'traditional management' on fisheries yields and on the ecological condition of the fished reefs. This area has one of the oldest and most elaborate cultural traditions concerning sacred sites and rituals of sacrifice along the Kenyan coast. The purpose of the customs is, however, to appease spirits rather than to regulate fish stocks which are traditionally seen to fluctuate independently of fishing effort. Many of these traditions have decayed in recent times as Islamization of the culture has occurred, and authority has shifted towards national organizations, weakening the effectiveness of the traditional leaders. Coincidentally, fishers have adopted new or foreign gear, colleagues, and traditions. Two adjacent landing sites (Mvuleni and Mwanyaza) have, however, successfully stopped pull seiners from landing their catch at their sites for over 20 years through passive means. Other landing sites have adopted pull seining. Both landing areas use arguments based on tradition to justify their use of gear. The two landings that restrict pull seining have higher per capita fish catches than those that do not. Nonetheless, there were no obvious differences in the ecological condition of the reefs at these two management areas; both areas were amongst the most degraded reefs reported in East Africa. Biological diversity and coral cover were reduced greatly in all these areas compared to other fished or fully-protected marine park or reserve sites established by the national government. Presently, traditional management is not effective in protecting species diversity or ecological functions, which was probably never the intention of the customs. The conflict between national organizations and local fishers arises because some resource users are concerned that the management proposed by the national organizations will eventually lead to the total loss of access to, and control of the resource by local fishers. There is, therefore, a need to resolve conflicts concerning gear use and regulation, and a need to increase awareness of the expectations and management programmes among the national and local organizations. Many of the traditional forms of management are compatible with the policies of national organizations, but confusion and conflict occur concerning enforcement and its benefits. To solve these conflicts discussions are required between traditional and national fisheries leaders to develop mutually-acceptable policies that augment and share the power of management.

scholarly journals Status and Trends of the Ferruginous Duck’s (Aythya nyroca) Wintering Population in Morocco: Analysis of 35 Years of Winter Census Data (1983-2017)

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Asmaâ Ouassou ◽  
Mohamed Dakki ◽  
Saïd Lahrouz ◽  
Mohammed Aziz El Agbani ◽  
Abdeljebbar Qninba
Keyword(s):  
Census Data ◽  
Iucn Red List ◽  
Distribution Area ◽  
Strong Increase ◽  
Small Reservoir ◽  
North West ◽  
Inland Wetlands ◽  
Regional Population ◽  
Near Threatened ◽  
Wintering Population

The Ferruginous duck is a winter visitor and breeding resident in Morocco. The species breeds regularly in several coastal and inland wetlands, with remarkable numbers in some marshlands (Sidi Boughaba, Fouwarate, Bargha, Bas Loukkos, etc.). This duck is listed as near threatened in the IUCN Red List, and its populations have been in decline in many European countries. In Morocco, the national wintering population has known, during the last decade, a strong increase, in both its numbers (from tens to thousands of individuals) and distribution area (from a couple of sites to more than 21 wetlands). The North-West region of Morocco has been hosting regularly, during the last decade, between 31 and 91% of the Moroccan wintering population, which is mainly concentrated in two marshlands: Merja de Fouwarate and Merja de Sidi Boughaba. A small reservoir, Barrage Hassar, recently created in the Centre-Atlantic region, has also been, in recent years, one of the most important wintering sites of the species. 15 wetlands have hosted, at least once during the last decade, more than 1% of the regional population of “West Mediterranean/North and West Africa”. This work is an important step to a better knowledge of the Ferruginous duck’s population. This knowledge is the basis for adopting adequate measures for the conservation of the species at the national and international level.

scholarly journals KARAKTERISTIK STRUKTUR KOMUNITAS IKAN KARANG TARGET DAN INDIKATOR DI PERAIRAN TAMAN NASIONAL KOMODO

2020 ◽  
Vol 26 (2) ◽  
pp. 75
Author(s):  
Ayuningtyas Indrawati ◽  
Isa Nagib Edrus ◽  
Tri Aryono Hadi
Keyword(s):  
Fish Species ◽  
National Park ◽  
Coral Cover ◽  
Reef Fishes ◽  
Distribution Area ◽  
Target Fish ◽  
Future Potential ◽  
Study Sites ◽  
Density And Biomass ◽  
Very High

Perairan karang Taman Nasional Komodo merupakan wilayah penangkapan ikan dan daerah tujuan wisata laut. Kondisi tutupan karang pada umumnya sudah di bawah 50%, namun dampak yang akan muncul terhadap ikan karang belum diteliti dan hal ini dibutuhkan bagi pengelolaan kawasan tersebut. Tujuan penelitian adalah mendapatkan karakteristik struktur komunitas ikan karang, meliputi komposisi, sebaran, kepadatan stok, dan biomassa ikan. Penelitian dilakukan pada bulan Juni 2019 dengan mengunakan metode sensus bawah air pada transek garis permanen untuk masing-masing stasiun penelitian. Sensus visual mendapatkan 128 spesies ikan target dari 21 suku dan 30 spesies ikan indikator dari suku Chaetodontidae. Rata-rata kepadatan stok ikan target dan ikan indikator adalah masing-masing 182 ± 67 individu/350m2 dan 35 ± 15 individu/350m2. Ukuran panjang ikan terbanyak antara 15 cm – 30 cm. Biomassa ikan target sebesar 1.174 ± 617 kg/hektar. Ikan karang target dan ikan indikator yang memiliki sebaran luas masing-masing 13 spesies dan 2 spesies . Komposisi kehadiran jenis ikan target di lokasi penelitian hanya 3% yang berdistribusi sangat tinggi, 7% berdistribusi tinggi, 18% berdistribusi sedang, 21% berdistribusi rendah dan 51% berdistribusi sangat rendah. Sementara jenis-jenis ikan indikator yang intensitas distribusinya sangat tinggi dan tinggi hanya 7%, dan lainnya tergolong sedang (23%), rendah (40%) sampai sangat rendah (23%). Kondisi sebaran spesies diduga menyebabkan keanekaragaman ikan karang pada keseluruhan lokasi penelitian terhitung tinggi, tetapi rendah untuk masing-masing lokasi penelitian. Semua lokasi di dalam kawasan taman nasional maupun diluar taman diperlukan pemantauan dengan porsi yang sama dan dilakukan secara berkala.Coral Reef Waters of Komodo National Park are fishing grounds and marine tourism destinations. The last condition of coral cover percentages of the regions have sustained below of 50%, however, their future potential impacts on fishes have not been studied and these will be needed in other to manage the regions. The study aimed to update reef fishes data in terms of some features of a community reef fish structure including composition, distribution, density, and biomass. A study was carried out in June, 2019 by using an underwater census visual at a permanent transect belt in the respective study sites. A total of 128 target fish species were recorded belonging to 21 families and 30 indicator fish species of Cahetodontidae were succesfully identified. The density mean of target and indicator fishes are 182 ± 67 individual/350m2 and 35 ± 15 individual/350m2, respectively. Most of fish sizes ranged from 15 cm to 30 cm. The biomass mean of target fishes are 1,174 ± 617 kg/hectare. Only for 13 species of target fishes that have high distribution in overall the study sites and 2 species of indicator fishes, as well. Composition present of target reef fishes in the distribution area given were in levels of 3% very high, 7% high, 18% fair, 21% low,and 51% veri low. Meanwhile, those for indicator fishes were in levels of 7% very high and high, 23% fair, 40% low, and 23% veri low. There was mayor significant diversity of reef fishes for overall study sites, however those was minor for respective study sites.The whole locations weather in-side or out-side of Komodo National Park need the equal portion for priodical monitoring.

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