scholarly journals Rocky shores of a major southern African Marine Protected Area are almost free from intertidal invertebrate alien species

Koedoe ◽  
2014 ◽  
Vol 56 (1) ◽  
Author(s):  
Hanlie Malherbe ◽  
Michael Samways

A major threat to marine ecosystems is the establishment and proliferation of invasive alien species. This study addresses gaps in our knowledge regarding marine alien invertebrate species in the Kogelberg Biosphere Reserve (KBR) and adjacent Betty’s Bay Marine Protected Area (MPA) in the Western Cape of South Africa, together a potentially important area for south-coast marine conservation. Understanding the distribution and geographical expansion of these species is critical for conservation planning. A quantitative systematic survey of the intertidal rocky shore region was undertaken. The mytilid Mediterranean mussel, Mytilus galloprovincialis, and the bryozoan Watersipora subtorquata were the only alien species recorded along the coastline, which included the MPA. The abundance of M. galloprovincialis was significantly higher outside the MPA, and the abundance of W. subtorquata was significantly higher inside the MPA. With only two alien species recorded, the Betty’s Bay MPA and its surroundings support relatively few marine alien species with regards to rocky shore invertebrate biodiversity. Conservation implications: It is important that the Betty’s Bay MPA and its adjacent coastline maintain its current status as an area with relatively few marine alien species. The conservation implications on management require routine surveys of this region to detect early introductions of any additional species.

2015 ◽  
Vol 2 ◽  
Author(s):  
Rita C. Abecasis ◽  
Pedro Afonso ◽  
Ana Colaço ◽  
Nancy Longnecker ◽  
Julian Clifton ◽  
...  

2019 ◽  
Vol 6 (1) ◽  
pp. 27
Author(s):  
Silverius Ariston ◽  
Unstain N.W.J Rembet ◽  
Denny B.A Karwur

Title (Bahasa Indonesia): Status dan strategi kawasan konservasi perairan daerah di Desa Uwedikan, Kecamatan Luwuk Timur, Kabupaten Banggai Marine Protected Area (MPA) in Uwedikan Village is a conservation area established through Banggai Regent’s decree since 2008. The establishment of a marine conservation area does not necessarily solve its management problems. The study aimed to examine the sustainability status of the MPA management of Uwedikan village and to formulate a managementstrategy. Research method  used wasa descriptive method through case study approach. Data collection employed questionnaires-basedinterviews on respondents. The data were analyzed by using Rapid Appraisal for Fisheries Status (Rapfish) to obtain the sustainability status of the MPA in Uwedikan. The Rapfish outcome wasthenanalyzed using Diagnosis and Therapy Analysis of Law (DTAL) to formulate a strategy for the existing management.Kawasan Konservasi Perairan Daerah (KKPD) di Desa Uwedikan merupakan kawasan konservasi yang telah ditetapkan melalui keputusan Bupati Banggai sejak tahun 2008. Penetapan suatu kawasan konservasi laut tidak serta merta dapat menyelesaikan permasalahan pengelolaannya. Penelitian bertujuan untuk mengkaji status keberlanjutan penatakelolaan kawasan konservasi perairan daerah Desa Uwedikan dan merumuskan strategi pengelolaannya. Metode penelitian adalah metode deskriptif melalui pendekatan studi kasus. Pengumpulan data melalui wawancara kuesioner mendalam terhadap responden. Data hasil kuesioner diolah menggunakan analisis yang ada pada Rapid Appraisal for Fisheries Status(Rapfish) sehingga didapatkan status keberlanjutan penatakelolaan KKPD Uwedikan saat ini.Hasil dari Rapfish di analisis menggunakan Diagnosis and Therapy Analysis of Law(DTAL) untuk merumuskan strategi terhadap penatakelolaan yang ada.


DEPIK ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 18-31
Author(s):  
Samliok Ndobe ◽  
Kris Handoko ◽  
Deddy Wahyudi ◽  
Moh. Yasir ◽  
Yulina Irawati ◽  
...  

Abstract. The Banggai cardinalfish Pterapogon kauderni is a species of national and international conservation concern. Established in November 2019, the Banggai marine protected area (MPA) in Central Sulawesi, Indonesia covers most of the endemic range of this ornamental fish. The third repeat survey (T2 monitoring) under the National Action Plan for Banggai Cardinalfish Conservation (NAP-BCFC) was carried out in October 2019 at eight sites in the Bokan Kepulauan region within the MPA. The T2 monitoring used the standard NAP-BCFC belt transect method. Data were collected on P. kauderni abundance (by size class: recruits, juveniles, adults) and microhabitat (sea urchins, sea anemones, hard corals, and others). Data were evaluated with respect to the T0 (2017) survey and T1 (2018) monitoring at the same sites, as well as previous surveys in 2004 (2 sites) and 2012 (4 sites). The data show wide between-site variation in P. kauderni and microhabitat parameters, with one subpopulation at very high risk of extirpation. Trends included declines over time in P. kauderni, sea urchin and sea anemone abundance, with an increase since 2017 in hard coral microhabitat use by adult P. kauderni. We recommend evaluation of other P. kauderni populations in Bokan Kepulauan and specific site or zone-based actions. However, we conclude that the most urgent priority for P. kauderni conservation in Bokan Kepulauan is protection of key microhabitat through a moratorium on sea urchin and sea anemone collection in P. kauderni habitat.  Keywords: Banggai cardinalfish, endangered species, marine conservation, microhabitat, monitoring, ornamental fishery, CITES


2019 ◽  
Vol 19 (2) ◽  
pp. 255-261
Author(s):  
Dao Minh Dong ◽  
Tran Van Huong ◽  
Luong Huu Toan

Variously colored abalone (Haliotis diversicolor Reeve, 1864) is the one of 22 protected species by Bach Long Vi National Marine Protected Area. In 1987, the yield of abalone was 37 tons per year, but it was reduced to 5 tons per year in 1992 and before the year of 2013, the yield is less than 1 ton per year [3]. Acording to the survey in October, 1974 the density ranged from 1 to 4 individuals/500 m2, the average for the all of island is 1.25 individuals/500 m2, the current reserve of variously colored abalone is about 0.05 tons. Some of the major causes of abalone depletion include the use of destructive fishing practices such as mines, cyanides, asynchronous development of infrastructure, and sources of pollution... Some solutions to recover the source of profit from abalone such as: The management board of Bach Long Vi National Marine Protected Area and competent authorities have to strengthen communication activities to protect the natural environment, resources as well as to have strong sanctions to strictly handle the environmental pollution activities, illegal methods of fishing. There is a need of research plan to rehabilitate Sargassum and reproduce abalone to return to natural enviroment. To invest in scientific research, to build the facilities and equipments for the management board of Bach Long Vi National Marine Protected Areas should be paid attention.


2021 ◽  
Vol 11 ◽  
pp. 31-44
Author(s):  
Luca Giuseppe Costanzo ◽  
Giuliana Marletta ◽  
Giuseppina Alongi

Biological invasions are considered one of the main threats for biodiversity. In the last decades, more than 60 macroalgae have been introduced in the Mediterranean Sea, causing serious problems in coastal areas. Nevertheless, the impacts of alien macroalgae in deep subtidal systems have been poorly studied, especially in the coralligenous habitats of the eastern coast of Sicily (Italy). Therefore, within the framework of the programme “Progetto Operativo di Monitoraggio (P.O.M.)” of the EU Marine Strategy Framework Directive (MSFD), the aim of the present study was to gain knowledge on the alien macroalgae present in coralligenous habitats of the Marine Protected Area (MPA) Isole Ciclopi, along the Ionian coast of Sicily. By Remotely Operated Vehicle (ROV) videos and destructive samples analysed in the laboratory, five alien species were identified: Caulerpa cylindracea, Antithamnion amphigeneum, Asparagopsis armata, Bonnemaisonia hamifera, and Lophocladia lallemandii. Since A. amphigeneum was previously reported only in the western Mediterranean and Adriatic Sea, the present report represents the first record of this species in the eastern Mediterranean. The ROV surveys showed that the alien species do not have a high coverage and do not appear to be invasive in the coralligenous area of the MPA. Since ocean temperatures are predicted to increase as climate change continues and alien species are favoured by warming of the Mediterranean Sea, the risk of biotic homogenisation caused by the spread of alien species is realistic. Therefore, further studies are needed to assess the incidence and invasiveness of alien species in phytobenthic assemblages of coralligenous in the MPA.


2017 ◽  
Vol 130 ◽  
pp. 150-156 ◽  
Author(s):  
Adriana Brizon Portugal ◽  
Fabrício Lopes Carvalho ◽  
Marcelo de Oliveira Soares ◽  
Paulo Antunes Horta ◽  
José Marcos de Castro Nunes

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